This presentation consists of information about earthquake and techniques used in the low cost earthquake resistant structures. There is complete description about the earthquake as well as the techniques related to the eq resistant techniques
Base isolation is a seismic protection system that separates a structure from its foundation, allowing the structure to remain largely motionless during an earthquake by absorbing shock through devices like friction pendulums and elastomeric bearings. There are various types of base isolators including low-damping rubber bearings, lead-rubber bearings, and sliding systems. Base isolation is most suitable for low to medium-rise buildings founded on firm soil, as it reduces seismic forces and prevents damage by permitting the ground and structure to move independently.
The document discusses base isolation as an earthquake protection system. It begins with an introduction to earthquakes and then defines base isolation as a system that uses flexible interfaces between a structure and its foundation to decouple the structure from ground motions during an earthquake. It describes various types of base isolation systems, including sliding and elastomeric bearing systems, and discusses considerations for implementing base isolation for structures. It provides an example of base isolation being used in a new hospital built after the collapse of a hospital during an earthquake in India.
Earthquake-resistant structures are structures designed to protect buildings to some or greater extent from earthquakes. While no structure can be entirely immune to damage from earthquakes, the goal of earthquake-resistant construction is to erect structures that fare better during seismic activity than their conventional counterparts. According to building codes, earthquake-resistant structures are intended to withstand the largest earthquake of a certain probability that is likely to occur at their location. This means the loss of life should be minimized by preventing the collapse of the buildings for rare earthquakes while the loss of the functionality should be limited for more frequent ones
This document provides an overview of base isolation, which is a seismic protection system that mitigates earthquake damage by isolating structures from ground motions. It discusses the concepts of base isolation, including introducing flexibility to reduce transmitted forces. Common isolation components like elastomeric and lead-rubber bearings are described. The document also covers principles, suitability, differences between isolated and fixed structures, and real-world applications of base isolation in over 1000 buildings worldwide.
This document summarizes earthquake resistant techniques. It discusses conventional methods like strengthening buildings through stiffness and ductility. Advanced methods of base isolation and energy dissipation devices are explained. Case studies on buildings like Torre Mayor and Transamerica Pyramid are provided. Techniques under research like shape memory alloys, mussel fibers, visco-elastic dampers and rubber cloaking are outlined. Seismic zones and codes in India are briefly covered along with references.
Pre-stressed concrete uses tensioned steel strands or bars to place concrete in compression before application of service loads. This counters the tensile stresses induced by loads and prevents cracking. There are two main methods: pre-tensioning applies tension before pouring concrete, while post-tensioning tensions strands after concrete curing. Pre-stressed concrete allows for smaller and lighter structures that resist loads, deflection, and cracking better than reinforced concrete.
Earthquake resistant building technologiesMyo Zin Aung
This document discusses various earthquake-resistant building technologies including:
1) Base isolation, which places structures on seismic bearings to isolate them from ground shaking.
2) Dampers like oil, viscous, and friction dampers that absorb seismic energy.
3) Tuned mass dampers and tuned liquid dampers that reduce vibrations through pendulums or liquid-filled tanks tuned to the building's natural frequency.
4) Innovations like yielding dampers, tuned mass dampers in skyscrapers, and "seismic invisibility cloaks" that deflect ground waves around structures.
Base isolation is a seismic protection system that separates a structure from its foundation, allowing the structure to remain largely motionless during an earthquake by absorbing shock through devices like friction pendulums and elastomeric bearings. There are various types of base isolators including low-damping rubber bearings, lead-rubber bearings, and sliding systems. Base isolation is most suitable for low to medium-rise buildings founded on firm soil, as it reduces seismic forces and prevents damage by permitting the ground and structure to move independently.
The document discusses base isolation as an earthquake protection system. It begins with an introduction to earthquakes and then defines base isolation as a system that uses flexible interfaces between a structure and its foundation to decouple the structure from ground motions during an earthquake. It describes various types of base isolation systems, including sliding and elastomeric bearing systems, and discusses considerations for implementing base isolation for structures. It provides an example of base isolation being used in a new hospital built after the collapse of a hospital during an earthquake in India.
Earthquake-resistant structures are structures designed to protect buildings to some or greater extent from earthquakes. While no structure can be entirely immune to damage from earthquakes, the goal of earthquake-resistant construction is to erect structures that fare better during seismic activity than their conventional counterparts. According to building codes, earthquake-resistant structures are intended to withstand the largest earthquake of a certain probability that is likely to occur at their location. This means the loss of life should be minimized by preventing the collapse of the buildings for rare earthquakes while the loss of the functionality should be limited for more frequent ones
This document provides an overview of base isolation, which is a seismic protection system that mitigates earthquake damage by isolating structures from ground motions. It discusses the concepts of base isolation, including introducing flexibility to reduce transmitted forces. Common isolation components like elastomeric and lead-rubber bearings are described. The document also covers principles, suitability, differences between isolated and fixed structures, and real-world applications of base isolation in over 1000 buildings worldwide.
This document summarizes earthquake resistant techniques. It discusses conventional methods like strengthening buildings through stiffness and ductility. Advanced methods of base isolation and energy dissipation devices are explained. Case studies on buildings like Torre Mayor and Transamerica Pyramid are provided. Techniques under research like shape memory alloys, mussel fibers, visco-elastic dampers and rubber cloaking are outlined. Seismic zones and codes in India are briefly covered along with references.
Pre-stressed concrete uses tensioned steel strands or bars to place concrete in compression before application of service loads. This counters the tensile stresses induced by loads and prevents cracking. There are two main methods: pre-tensioning applies tension before pouring concrete, while post-tensioning tensions strands after concrete curing. Pre-stressed concrete allows for smaller and lighter structures that resist loads, deflection, and cracking better than reinforced concrete.
Earthquake resistant building technologiesMyo Zin Aung
This document discusses various earthquake-resistant building technologies including:
1) Base isolation, which places structures on seismic bearings to isolate them from ground shaking.
2) Dampers like oil, viscous, and friction dampers that absorb seismic energy.
3) Tuned mass dampers and tuned liquid dampers that reduce vibrations through pendulums or liquid-filled tanks tuned to the building's natural frequency.
4) Innovations like yielding dampers, tuned mass dampers in skyscrapers, and "seismic invisibility cloaks" that deflect ground waves around structures.
This document discusses retrofitting of buildings. It begins with an introduction to retrofitting, which is defined as modifying existing structural members to increase resistance to loads. The document then covers the goals of retrofitting such as increasing lateral strength and ductility. It also discusses the need for retrofitting, including when buildings are not designed to code or seismic zones are upgraded. The stages of retrofitting and methods for assessing building condition are outlined. Common retrofitting techniques like concrete and steel jacketing are described and examples of retrofitted structures in Balochistan are provided.
Basics of earthquake & structural and non structural guidelines for building ...Bhasker Vijaykumar Bhatt
The presentation covers the scenario post a hazard of Earthquake turned into a disaster. Further, it includes the basic terminology, dynamics of EQ event, and suggests remedial practices for structural and non-structural elements of a building. Purpose the compilation is to sensitize learners.
It contains details of retrofitting techniques and their application in various aspects in historical monuments. It would help to protect several heritage structures from the devastating effect of the earthquake. Some applications are also helpful too counter act the severe effect of the wind load. There are many historical heritages especially in India, are reopened to the public after being retrofitted and renovated.
PROTECTION, REPAIR & MAINTENANCE OF RCC STRUCTURES SUBMITTED IN THE PARTIA...Rising Sher
Repair and strengthening of damaged or vulnerable reinforced concrete Structures is important in order to guarantee the safety of residents or Users. Beams are important structural elements for withstanding loads, so finding the efficient repair and strengthening methods are necessary. In terms of maintaining the safety of the structures. This research study investigated various repair, retrofit, and Strengthening techniques for reinforced concrete beams. The Comparison and summary of each repair and strengthening method are provided in this thesis. The thesis involves the literature review of current experimental test of Repair and strengthening techniques for reinforced concrete beams. The Experimental studies were summarized by describing the specimen and loading details, all the methods in the research were categorized into five chapters: section enlargement and concrete jacketing, external Reinforcement, steel plates, unbounded-type strengthening, and concrete Repairs.
Project ppt on earthquake resistant building structureSambhavJain168
This document presents research on earthquake resistant building design using base isolation. It discusses how base isolation systems work to reduce seismic demand on structures by separating the superstructure from the substructure. The document outlines the objectives, literature review, code-based analysis process, experimental investigation and results. The results show that using laminated rubber bearings for base isolation can significantly reduce base shear and structural drift compared to fixed-base structures. Therefore, base isolation is concluded to be an effective seismic control method.
Multi storey structural steel structuresThomas Britto
Steel has been used in construction for over 150 years. Its use in Hong Kong started in the 1970s with projects like the Park Lane Hotel. Steel has properties that make it suitable for high-rise buildings like strength and versatility, though it can be heavy, lose strength in heat, and rust. Standard steel sections provide design flexibility. Connections are made through joints like splices and welds. Common frame types include simple cage frames, cantilevers, wind-braced, and core structures. Steel construction has advantages like lighter weight and flexibility for changes, but has challenges like fire resistance, movement, and corrosion protection.
The document discusses ductility and ductile detailing in reinforced concrete structures. It states that structures should be designed to have lateral strength, deformability, and ductility to resist earthquakes with limited damage and no collapse. Ductility allows structures to develop their full strength through internal force redistribution. Detailing of reinforcement is important to avoid brittle failure and induce ductile behavior by allowing steel to yield in a controlled manner. Shear walls are also discussed as vertical reinforced concrete elements that help structures resist earthquake loads in a ductile manner.
This document discusses concrete distress, its causes, and concrete repair systems. It defines distress as damage to concrete that can occur during production or service life due to varying conditions. Common causes of distress include structural loads, errors in design and construction, drying shrinkage, corrosion, and deterioration over time from chemical reactions, freezing/thawing, or weathering. Proper concrete repair requires determining the cause of damage, evaluating its extent, selecting repair methods, preparing the surface, applying repair materials, and curing. Durable repairs depend on high quality workmanship and materials to ensure the repair is well-bonded and resistant to future distress.
The document provides an introduction to the repair and rehabilitation of structures. It discusses factors contributing to damages in buildings from construction through use. Common causes of distress in concrete structures are then outlined, including construction errors, environmental factors, and chemical reactions. The objectives of conducting a condition survey of a distressed structure are presented, including identifying causes and assessing the extent of damage. The stages of a condition survey are described, beginning with a preliminary inspection, planning, visual inspection, and potentially field and laboratory testing. Classification of damage into different classes is also covered to help assess repair needs.
Seismic retrofitting involves modifying existing structures to increase their resistance to seismic activity like earthquakes. It is important for historically significant buildings, areas prone to earthquakes, and tall or expensive structures. Retrofitting techniques can strengthen structures by increasing lateral strength, ductility, and strength-ductility. Some common retrofitting methods include adding new shear walls, steel bracing, base isolation, and column jacketing. Column jacketing involves wrapping columns with steel, reinforced concrete, or fiber-reinforced polymers to improve shear and flexural capacity. The selection of a retrofitting technique depends on factors like the structure type, material condition, cost, and effectiveness for the situation.
This document discusses creep and shrinkage in concrete structures. It defines creep as time-dependent deformations of concrete under load, and shrinkage as shortening of concrete due to drying that is independent of applied loads. Factors that affect creep include concrete mix proportions, aggregate properties, age at loading, curing conditions, cement properties, temperature, and stress level. Factors that affect shrinkage include drying conditions, time, and water-cement ratio. The document also discusses types of shrinkage such as plastic, drying, autogenous, and carbonation shrinkages. It outlines effects of creep and shrinkage on structures and methods to prevent shrinkage.
This document discusses various techniques for retrofitting concrete structures to make them more resistant to seismic activity and other natural hazards. It defines retrofitting as modifying existing structures to increase resistance. Key techniques mentioned include adding new shear walls, steel bracing, column and beam jacketing with steel or concrete, base isolation using seismic isolators, mass reduction by removing floors, and wall thickening. The document also discusses challenges in retrofitting and standards from Indian codes for earthquake-resistant design. The conclusion emphasizes that retrofitting has matured but expertise is still lacking, and optimization is needed to determine the most cost-effective technique for a given structure.
This document discusses techniques for building earthquake resistant structures in India. It covers various sources of earthquakes and methods to resist seismic activity, including both active and passive systems. Some specific techniques mentioned are shear walls, bracing, dampers, isolation, and using light-weight materials. Suggestions are provided such as avoiding weak column designs, including thick slabs and cross walls, and following building codes.
tells about how the earthquakes are happen, effect of earthquakes on buildings and design methods to be followed to design earthquake resistance building.
Base isolation techniques-Earthquake EngineeringGokul Ayyappan
The document discusses base isolation techniques for earthquake-resistant building design. Base isolation involves separating the structure from its foundation using a suspension system to reduce seismic demand on the building. There are several types of base isolation devices that provide flexibility, damping and resistance to vertical loads, including elastomeric bearings, lead rubber bearings, and flat or curved slider bearings. Elastomeric bearings use layers of rubber between steel plates to support vertical loads while allowing flexibility under lateral earthquake forces.
This document provides an overview of glass fiber reinforced concrete (GFRC). It discusses what concrete and fiber reinforced concrete are, as well as the history and types of fiber reinforced concrete. Glass fiber concrete is described as a composite material made of sand, cement, polymer, water, glass fibers and other admixtures. The document outlines the properties, applications, advantages and structural characteristics of GFRC. It concludes that GFRC provides benefits like high strength, crack resistance, impact resistance and durability compared to conventional concrete.
Different types of damages that have been observed in masonry buildings durin...Nitin Kumar
The document summarizes different types of damages observed in masonry buildings during past earthquakes outside and inside India. For earthquakes outside India, it describes damages like through diagonal cracks or X-shaped cracks on walls, horizontal cracks on walls and bearing brick columns, severe damage to stair parts, and damage to non-structural components like parapets and corridor fences. It also discusses damages caused by structural irregularities. For earthquakes in India, it lists failure patterns of masonry structures under categories such as out-of-plane flexural failure, in-plane shear failure, separation of walls at junctions, corner separations, failure of masonry piers, and collapse of wythes.
These alternate building materials can be used when it meets the respective specifications in the code of practice. Here some new materials and technology is discussed as well and a list many alternate materials for foundation, roof and walls are presented with details of each.
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A technical approach to designing earthquake resistant buildings. Contains a brief overview of why a structure fails, building foundation problems and what are the possible solutions
Earthquake resistant building constructiondaspriyabrata3
1 INTRODUCTION
2 EARTHQUAKE THEORY
3 EARTHQUAKE MAGNITUDE AND ENERGY
4 EFFECTS OF EARTHQUAKES
5 MAJOR EARTHQUAKES
6 NOTABLE EARTHQUAKES AND THEIR ESTIMATED
MAGNITUDE
7 HOW EARTHQUAKE RESISTANT CONSTRUCTION IS
DIFFERENT
8 SEISMIC DESIGN PHILOSOPHY
9 EFFECT OF EARTHQUAKE ON REINFORCED CONCRETE BUILDINGS
10 ROLES OF FLOOR AND MASONRY WALLS SLABS
11 STRENGTH HIERARCHY
12 EARTHQUAKE RESISTANT BUILDING
13 EARTHQUAKE DESIGN PHILOSOPHY
14 REMEDIAL MEASURES TO MINIMISE THE LOSSES DUE TO EARTHQUAKES
15 EARTHQUAKE RESISTANT BUILDING CONSTRUCTION WITH REINFORCED HOLLOW CONCRETE BLOCK(RHCBM)
16 STRUCTURAL FEATURES
17 STRUCTURAL ADVANTAGES
18 CONSTRUCTIONAL ADVANTAGES
19 ARCHITECTURAL AND OTHER ADVANTAGES
20 STUDIES ON THE COMPARATIVE COST ECONOMICS OF RHCBM
21 MID-LEVEL ISOLATION 32-34
22 EARTHQUAKE RESISTANCE BUILDING USING SEISMIC ISOLATION SYSTEMS WITH SLIDING ON CONCAVE SURFACE
23 DESCRIPTION
24 CONCEPT OF FRICTION PENDULUM BEARING
25 SLIDING PENDULUM SEISMIC ISOLATION SYSTEM
26 BACKGROUND OF THE INVENTION
27 BRIEF SUMMARY OF THE INVENTION
28 DETAILED DESCRIPTION OF THE INVENTION
29 ESTIMATION
30 CONCLUSION
31 BIBLIOGRAPHY
The document summarizes the construction technology of Madge Mansions, a luxury condominium development in Kuala Lumpur, Malaysia. It consists of 3 blocks of 10 stories with 52 units total, including 6 penthouses. The development uses pile foundations to support the building due to weak soil conditions. Suspended slabs are used for the ground level and upper levels, and a flat roof covers the top.
This document discusses retrofitting of buildings. It begins with an introduction to retrofitting, which is defined as modifying existing structural members to increase resistance to loads. The document then covers the goals of retrofitting such as increasing lateral strength and ductility. It also discusses the need for retrofitting, including when buildings are not designed to code or seismic zones are upgraded. The stages of retrofitting and methods for assessing building condition are outlined. Common retrofitting techniques like concrete and steel jacketing are described and examples of retrofitted structures in Balochistan are provided.
Basics of earthquake & structural and non structural guidelines for building ...Bhasker Vijaykumar Bhatt
The presentation covers the scenario post a hazard of Earthquake turned into a disaster. Further, it includes the basic terminology, dynamics of EQ event, and suggests remedial practices for structural and non-structural elements of a building. Purpose the compilation is to sensitize learners.
It contains details of retrofitting techniques and their application in various aspects in historical monuments. It would help to protect several heritage structures from the devastating effect of the earthquake. Some applications are also helpful too counter act the severe effect of the wind load. There are many historical heritages especially in India, are reopened to the public after being retrofitted and renovated.
PROTECTION, REPAIR & MAINTENANCE OF RCC STRUCTURES SUBMITTED IN THE PARTIA...Rising Sher
Repair and strengthening of damaged or vulnerable reinforced concrete Structures is important in order to guarantee the safety of residents or Users. Beams are important structural elements for withstanding loads, so finding the efficient repair and strengthening methods are necessary. In terms of maintaining the safety of the structures. This research study investigated various repair, retrofit, and Strengthening techniques for reinforced concrete beams. The Comparison and summary of each repair and strengthening method are provided in this thesis. The thesis involves the literature review of current experimental test of Repair and strengthening techniques for reinforced concrete beams. The Experimental studies were summarized by describing the specimen and loading details, all the methods in the research were categorized into five chapters: section enlargement and concrete jacketing, external Reinforcement, steel plates, unbounded-type strengthening, and concrete Repairs.
Project ppt on earthquake resistant building structureSambhavJain168
This document presents research on earthquake resistant building design using base isolation. It discusses how base isolation systems work to reduce seismic demand on structures by separating the superstructure from the substructure. The document outlines the objectives, literature review, code-based analysis process, experimental investigation and results. The results show that using laminated rubber bearings for base isolation can significantly reduce base shear and structural drift compared to fixed-base structures. Therefore, base isolation is concluded to be an effective seismic control method.
Multi storey structural steel structuresThomas Britto
Steel has been used in construction for over 150 years. Its use in Hong Kong started in the 1970s with projects like the Park Lane Hotel. Steel has properties that make it suitable for high-rise buildings like strength and versatility, though it can be heavy, lose strength in heat, and rust. Standard steel sections provide design flexibility. Connections are made through joints like splices and welds. Common frame types include simple cage frames, cantilevers, wind-braced, and core structures. Steel construction has advantages like lighter weight and flexibility for changes, but has challenges like fire resistance, movement, and corrosion protection.
The document discusses ductility and ductile detailing in reinforced concrete structures. It states that structures should be designed to have lateral strength, deformability, and ductility to resist earthquakes with limited damage and no collapse. Ductility allows structures to develop their full strength through internal force redistribution. Detailing of reinforcement is important to avoid brittle failure and induce ductile behavior by allowing steel to yield in a controlled manner. Shear walls are also discussed as vertical reinforced concrete elements that help structures resist earthquake loads in a ductile manner.
This document discusses concrete distress, its causes, and concrete repair systems. It defines distress as damage to concrete that can occur during production or service life due to varying conditions. Common causes of distress include structural loads, errors in design and construction, drying shrinkage, corrosion, and deterioration over time from chemical reactions, freezing/thawing, or weathering. Proper concrete repair requires determining the cause of damage, evaluating its extent, selecting repair methods, preparing the surface, applying repair materials, and curing. Durable repairs depend on high quality workmanship and materials to ensure the repair is well-bonded and resistant to future distress.
The document provides an introduction to the repair and rehabilitation of structures. It discusses factors contributing to damages in buildings from construction through use. Common causes of distress in concrete structures are then outlined, including construction errors, environmental factors, and chemical reactions. The objectives of conducting a condition survey of a distressed structure are presented, including identifying causes and assessing the extent of damage. The stages of a condition survey are described, beginning with a preliminary inspection, planning, visual inspection, and potentially field and laboratory testing. Classification of damage into different classes is also covered to help assess repair needs.
Seismic retrofitting involves modifying existing structures to increase their resistance to seismic activity like earthquakes. It is important for historically significant buildings, areas prone to earthquakes, and tall or expensive structures. Retrofitting techniques can strengthen structures by increasing lateral strength, ductility, and strength-ductility. Some common retrofitting methods include adding new shear walls, steel bracing, base isolation, and column jacketing. Column jacketing involves wrapping columns with steel, reinforced concrete, or fiber-reinforced polymers to improve shear and flexural capacity. The selection of a retrofitting technique depends on factors like the structure type, material condition, cost, and effectiveness for the situation.
This document discusses creep and shrinkage in concrete structures. It defines creep as time-dependent deformations of concrete under load, and shrinkage as shortening of concrete due to drying that is independent of applied loads. Factors that affect creep include concrete mix proportions, aggregate properties, age at loading, curing conditions, cement properties, temperature, and stress level. Factors that affect shrinkage include drying conditions, time, and water-cement ratio. The document also discusses types of shrinkage such as plastic, drying, autogenous, and carbonation shrinkages. It outlines effects of creep and shrinkage on structures and methods to prevent shrinkage.
This document discusses various techniques for retrofitting concrete structures to make them more resistant to seismic activity and other natural hazards. It defines retrofitting as modifying existing structures to increase resistance. Key techniques mentioned include adding new shear walls, steel bracing, column and beam jacketing with steel or concrete, base isolation using seismic isolators, mass reduction by removing floors, and wall thickening. The document also discusses challenges in retrofitting and standards from Indian codes for earthquake-resistant design. The conclusion emphasizes that retrofitting has matured but expertise is still lacking, and optimization is needed to determine the most cost-effective technique for a given structure.
This document discusses techniques for building earthquake resistant structures in India. It covers various sources of earthquakes and methods to resist seismic activity, including both active and passive systems. Some specific techniques mentioned are shear walls, bracing, dampers, isolation, and using light-weight materials. Suggestions are provided such as avoiding weak column designs, including thick slabs and cross walls, and following building codes.
tells about how the earthquakes are happen, effect of earthquakes on buildings and design methods to be followed to design earthquake resistance building.
Base isolation techniques-Earthquake EngineeringGokul Ayyappan
The document discusses base isolation techniques for earthquake-resistant building design. Base isolation involves separating the structure from its foundation using a suspension system to reduce seismic demand on the building. There are several types of base isolation devices that provide flexibility, damping and resistance to vertical loads, including elastomeric bearings, lead rubber bearings, and flat or curved slider bearings. Elastomeric bearings use layers of rubber between steel plates to support vertical loads while allowing flexibility under lateral earthquake forces.
This document provides an overview of glass fiber reinforced concrete (GFRC). It discusses what concrete and fiber reinforced concrete are, as well as the history and types of fiber reinforced concrete. Glass fiber concrete is described as a composite material made of sand, cement, polymer, water, glass fibers and other admixtures. The document outlines the properties, applications, advantages and structural characteristics of GFRC. It concludes that GFRC provides benefits like high strength, crack resistance, impact resistance and durability compared to conventional concrete.
Different types of damages that have been observed in masonry buildings durin...Nitin Kumar
The document summarizes different types of damages observed in masonry buildings during past earthquakes outside and inside India. For earthquakes outside India, it describes damages like through diagonal cracks or X-shaped cracks on walls, horizontal cracks on walls and bearing brick columns, severe damage to stair parts, and damage to non-structural components like parapets and corridor fences. It also discusses damages caused by structural irregularities. For earthquakes in India, it lists failure patterns of masonry structures under categories such as out-of-plane flexural failure, in-plane shear failure, separation of walls at junctions, corner separations, failure of masonry piers, and collapse of wythes.
These alternate building materials can be used when it meets the respective specifications in the code of practice. Here some new materials and technology is discussed as well and a list many alternate materials for foundation, roof and walls are presented with details of each.
alternative building materials for houses
alternative building materials and methods
alternative home construction materials
alternative construction materials
alternative brick building materials
wood alternative materials
alternative building products
wood alternatives for construction
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
seminar topics pdf
best seminar topics for civil engineering
seminar topics for mechanical engineers
latest civil engineering seminar topics
A technical approach to designing earthquake resistant buildings. Contains a brief overview of why a structure fails, building foundation problems and what are the possible solutions
Earthquake resistant building constructiondaspriyabrata3
1 INTRODUCTION
2 EARTHQUAKE THEORY
3 EARTHQUAKE MAGNITUDE AND ENERGY
4 EFFECTS OF EARTHQUAKES
5 MAJOR EARTHQUAKES
6 NOTABLE EARTHQUAKES AND THEIR ESTIMATED
MAGNITUDE
7 HOW EARTHQUAKE RESISTANT CONSTRUCTION IS
DIFFERENT
8 SEISMIC DESIGN PHILOSOPHY
9 EFFECT OF EARTHQUAKE ON REINFORCED CONCRETE BUILDINGS
10 ROLES OF FLOOR AND MASONRY WALLS SLABS
11 STRENGTH HIERARCHY
12 EARTHQUAKE RESISTANT BUILDING
13 EARTHQUAKE DESIGN PHILOSOPHY
14 REMEDIAL MEASURES TO MINIMISE THE LOSSES DUE TO EARTHQUAKES
15 EARTHQUAKE RESISTANT BUILDING CONSTRUCTION WITH REINFORCED HOLLOW CONCRETE BLOCK(RHCBM)
16 STRUCTURAL FEATURES
17 STRUCTURAL ADVANTAGES
18 CONSTRUCTIONAL ADVANTAGES
19 ARCHITECTURAL AND OTHER ADVANTAGES
20 STUDIES ON THE COMPARATIVE COST ECONOMICS OF RHCBM
21 MID-LEVEL ISOLATION 32-34
22 EARTHQUAKE RESISTANCE BUILDING USING SEISMIC ISOLATION SYSTEMS WITH SLIDING ON CONCAVE SURFACE
23 DESCRIPTION
24 CONCEPT OF FRICTION PENDULUM BEARING
25 SLIDING PENDULUM SEISMIC ISOLATION SYSTEM
26 BACKGROUND OF THE INVENTION
27 BRIEF SUMMARY OF THE INVENTION
28 DETAILED DESCRIPTION OF THE INVENTION
29 ESTIMATION
30 CONCLUSION
31 BIBLIOGRAPHY
The document summarizes the construction technology of Madge Mansions, a luxury condominium development in Kuala Lumpur, Malaysia. It consists of 3 blocks of 10 stories with 52 units total, including 6 penthouses. The development uses pile foundations to support the building due to weak soil conditions. Suspended slabs are used for the ground level and upper levels, and a flat roof covers the top.
The document summarizes the construction technology of Madge Mansions, a luxury condominium development in Kuala Lumpur, Malaysia. It consists of 3 blocks of 10 stories with 52 units total, including 6 penthouses. Pile foundations were used to support the building due to weak surface soils. Suspended slabs were utilized for the ground level and upper levels to distribute loads. A flat roof was also employed.
The document summarizes the construction technology of Madge Mansions, a luxury condominium development in Kuala Lumpur, Malaysia. It consists of 3 blocks of 10 stories with 52 units total, including 6 penthouses. Pile foundations were used to support the building due to weak surface soils. Suspended slabs were utilized for the ground level and upper levels to distribute loads. A flat roof was also employed.
The Rion Antirion Bridge project involves constructing a 3 km long multi-cable stayed bridge across the Gulf of Corinth in western Greece. It will be one of the largest bridges of its type in the world. The project faces significant engineering challenges due to high seismic activity in the region, deep weak soil layers, and the potential for fault displacements. Sophisticated dynamic analyses and foundation designs were required to develop a structure that can withstand strong earthquakes while maintaining serviceability. The bridge design utilizes seismic isolation of the deck and innovative reinforced soil foundations to improve bearing capacity and control failure modes under high seismic loads.
This document discusses earthquake resistant structures and techniques. It covers topics such as plate tectonics, earthquake hazards, classification of earthquakes, principles of earthquake-resistant design, Indian seismic codes, shear walls, case studies of past earthquakes, and techniques like base isolation, energy dissipation devices, and keeping buildings uplifted. The overall aim is to educate on designing and building structures that can better withstand seismic activities and reduce damage through engineering strategies.
Seismic retrofitting is a collection mitigation technique for earthquake engineering.
It is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquake.
It is of utmost important for historic monuments, areas prone to severe earthquakes and tall or
expensive structures.
The retrofitting techniques are also applicable for other natural hazards such as tropical cyclones, tornadoes and severe winds from thunderstorms.
Retrofitting proves to be a better economic consideration and immediate shelter to problems
rather than replacement of building.
This document is a project report on earthquake resistant buildings submitted by a civil engineering student. It begins with an acknowledgement thanking the project guide. The contents section lists topics that will be covered such as what is an earthquake, how they affect buildings, seismic zones in India, and popular earthquake resistant techniques. The introduction defines earthquakes and classifies their magnitudes. It also discusses how earthquakes can damage buildings and the impacts like structural damage, fires, and landslides. Popular earthquake resistant techniques discussed include shear walls, seismic dampers, base isolation, horizontal bands, and rollers.
1) Breakwaters are artificial protective barriers constructed to enclose harbors and keep harbor waters undisturbed by heavy seas. They enable harbors to be used as safe anchorages and allow cargo loading in calm waters.
2) There are several types of breakwaters, including rubble mound, mound with superstructure, and upright wall breakwaters. Rubble mound breakwaters use layers of stone and core materials. Mound with superstructure breakwaters have a solid structure atop the mound. Upright wall breakwaters function like solid walls.
3) Breakwaters provide shelter from wave action, lowering tidal energy and sediment transport. They allow harbors to be used safely and facilitate marine operations and berthing of small boats
This document discusses techniques for making buildings earthquake resistant. It covers base isolation, which involves supporting a building on bearing pads to allow flexibility during earthquakes. It also discusses energy dissipation devices like friction dampers, metallic dampers, and viscoelastic dampers that can absorb seismic energy. The document provides details on how each technique works and their advantages, such as reducing displacement and maintaining structural performance during earthquakes. It concludes that base isolation and friction dampers are commonly used techniques for earthquake-resistant construction.
The document discusses the slab used in Madge Mansion, a luxury condominium development. It describes the functions of slabs as providing a flat surface, supporting loads, and acting as insulation and dividers between units. There are two main types of slabs used - precast concrete slabs and in-situ concrete slabs. Precast slabs offer advantages like higher quality control during production and faster construction. In-situ slabs are constructed on site with reinforced concrete spanning between supporting members. The development uses suspended slabs to support loads on the ground level and upper levels.
Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes.
The document discusses the construction of Madge Mansions, a luxury condominium development consisting of 3 blocks of 10 stories with 52 units total. It describes the pile foundation, suspended slab flooring, and flat roof used for the building. The foundation uses piles to transfer the heavy building loads to deeper, stronger soil layers. Suspended slabs are used for the floors to support loads between levels. A flat roof design is employed.
Earthquake protection of buildings by seismic isolationgayathrysatheesan1
During the devastating February 2011 Christchurch earthquake, the iconic art gallery suffered damage and ground settlement. Triple Pendulum isolators were added at the basement level as part of the building’s repair and strengthening plan. The isolators increase the building’s seismic resilience and protect the precious art collections.
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earthquake isolation systems
seismic isolation devices
seismic isolation bearings
seismic earthquake data
Earthquake Resistant Building ConstructionRohan Narvekar
This File comprises of a general information and guidelines for construction of Earthquake Resistant buildings, Its a basic study of the same and may help students and learners for overall information of this technology.
The document discusses various techniques for making earthquake-resistant buildings, including:
1) Bearing wall systems that provide vertical support and lateral resistance through structural walls.
2) Frame systems that use diagonal braces or shear walls to provide lateral rigidity.
3) Moment-resisting frame systems that use rigid beam-column connections to resist lateral forces.
4) Dual systems that combine moment frames and walls/braces to resist both vertical and lateral loads.
5) Cantilever column systems. The document also discusses earthquake building codes in Japan and case studies like Shigeru Ban's paper tube schools.
The document discusses earthquakes and techniques for improving earthquake resistance in buildings. It defines earthquakes and describes how they occur due to movement in the earth's crust. It then covers types of earthquakes, causes and effects, seismic waves, and performance and design considerations for improving earthquake resistance. Specific techniques discussed include using shear walls, base isolation methods, energy dissipation devices, and keeping buildings in compression. The conclusion emphasizes following construction standards and periodic training to help assure earthquake-resistant buildings.
Similar to LOW COST EARTHQUAKE RESISTANT TECHNIQUES (20)
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LOW COST EARTHQUAKE RESISTANT TECHNIQUES
1. VISVESVARAYA TECHNOLOGICAL UNIVERSITY
Belagavi-590018
Technical Seminar on
LOW COST EARTHQUAKE RESISTANT
TECHNIQUES
In partial fulfillment of
BACHELOR OF ENGINEERING
In
CIVIL ENGINEERING
By
Mr. Sachin Kotian
(4MT14CV081)
Under the Guidance of
Mr . SAGAR S
Assistant Professor
Department of Civil Engineering
MANGALORE INSTITUTE OF TECHNOLOGYAND ENGINEERING
1
3. INTRODUCTION
• Earthquake is a sudden release of extreme energy from
the earth crust resulting in shaking and displacement of
the ground along with the creation of seismic waves.
• It is the vibration of the ground due to the sudden release
of energy by the breaking and shifting of rock beneath the
Earth´s surface and it creates seismic waves.
3
5. Seismic waves
• Seismic waves are generated by the release of energy
during an earthquake, which starts from focus of an
earthquake.
• Focus (Hypocenter): spot underground where the rock
begins to break.
• Epicenter: The location on the Earths surface directly
above the focus.
• Aftershock: Tremors that occur as rocks adjust to their
new position.
5
6. Types of Earthquake waves
Body waves : Spread outward from the focus in all
directions.
i. Primary Wave (P Wave)
ii. Secondary Wave (S Wave)
6
7. Surface waves : Spread outward from the epicenter to the Earth’s
surface .
• These waves are produced when earthquake energy reaches
the Earth's surface.
• Surface waves moves rock particles in a rolling and swaying
motion, so that the earth moves in different directions.
• These are the slowest moving waves, but are the most
destructive for structures on earth.
i. Love (L) wave
ii. Rayleigh wave
7
8. Effects of Earthquake
• If the Epicenter of a larger earthquake is situated in the
offshore (sea/ocean) seabed may be displaced sufficiently
to cause Tsunami.
• It also triggers land slides and occasionally volcanic
eruptions.
• Buildings may fall or sink into the soil.
• Rocks and soil may move downhill at a rapid rate.
8
9. The need for Earthquake
resistant structures
• It is designed to withstand the largest earthquake at
certain parts.
• The goal is to construct structures that fare better during
the seismic activity than their counterparts.
• To minimize the damage caused to the buildings there by
minimizing the causalities.
9
11. Horizontal Band
• Horizontal band can be defined as a method of
reinforcing the masonry buildings by providing bands
with higher tensional strength.
• It is enabled in areas where two structural elements of a
building meets.
• It is also termed as seismic band which consist of
reinforced concrete running flat throughout all the
external and internal masonry wall elements.
11
12. Types of Horizontal Band
• Plinth Band
• Lintel Band
• Roof Band
• Gable Band
12
13. Base Isolation Using Waste
Tire Pads
• Seismic isolation or base isolation uncouples the structure
for the damaging effect of the ground motion.
• The main aim of this method is to increase lateral strength
of the structure and to increase ductility of structure.
• It is suitable for low to medium rise buildings rested on
hard soil underneath.
• Buildings rested on soft soils are not suitable for base
isolation.
13
14. Waste tire pads
• Waste tire pads or Scrap tires reduces the cost and weight of
the seismic base isolation pads.
• Rubber segments between reinforcement layers provide low
horizontal stiffness for the seismic base Isolation.
• Automobile tires are produced by means of vulcanized rubber
with steel mesh in different forms which have similar effects as
the steel plates.
• Since the tires are being designed for friction, load transfer
between scrap tire layers would be large enough to keep all
layers intact.
14
16. Haunches
• Haunches are provided to strengthen the joints.
• Haunches increase the lever arm at the connection point
thereby allowing a greater joint moment capacity.
• In seismic design they can be particularly useful in
allowing hinge formation in the beam as this is a safer
failure mode.
16
17. Hollow Raft Foundation
• Hollow Raft foundation is a deep foundation.
• It is used in the building construction on soft and weak
soil.
• It is designed in such a way that it behave as buoyant
(floating) substructure for the net loading over it.
• A hollow raft foundation fully filled with water can be
used to reduce destructible effects of earthquake.
• It might be filled with some viscous fluid, worked as
damper to reduce earth quake effects.
17
18. Fig:-Construction of a Buoyancy Raft or Hollow Raft
Foundation for a Building in Glasgow. 18
19. CONCLUSION
• The low cost methods can be effective only for the small
buildings, as the stories increase the design should be
made stronger.
• The waste material i.e., worn tires which are made up of
rubber ,can be piled together and strengthened and can be
effectively used as base isolation pads.
• Haunches increase the lever arm at the connection point
thereby allowing a greater joint moment capacity.
19
20. REFERENCES
1) Agarwal, P. and Shrikhande, M., 2006, Earthquake Resistant
Design of Structures, 2nd Edition, Prentice-Hall of India
Private Limited, New Delhi.
2) K. Sathishkumar, Study of Earthquake Resistant RCC
Buildings with Increased Strength and Stability. IJIRSET
Vol. 4, Issue 6, June 2015
3) Murty, C.V.R., 2004, IITK-BMTPC Earthquake Tip, New
Delhi.
4) Priestley,M.J.N., Seible,F., and Calvi,G.M., (1996), Seismic
Design and Retrofit of Bridges, John Wiley & Sons Inc, USA
5) Savita Devi, Satyam Mehta, Review Paper on Base Isolation
Method – The Best Retrofitting Technique. SSRG
International Journal of Civil Engineering (SSRG-IJCE) –
volume 3 Issue 5 – May 2016
6) Systems through Different Base Isolation Systems, Journal
of Earthquake Engineering, 7 (2), 223-250.
20
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