IRJET- A Review on Box Pushing Technique

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 05 | May 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 7167
A REVIEW ON BOX PUSHING TECHNIQUE
Priyanka M. Rajput1, Omkar A. Phatak2, Devendra J. Sawant3 , Jay P. Digaskar4 ,
Omkar C. Shinde5, Yashraj B. Mahind6
1Professor of Civil Engineering,
2-6Student of Civil Engineering.
Department of Civil Engineering, Muchhala Polytechnic, Thane(W), Maharashtra , India.
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Abstract - The project entitled analysis and design and
execution of cross traffic works in railways using box
pushing technique (RUB) ,illustrate about the work to be
carried out for the widening of existing roads using box
pushing techniques for rail under bridges . it also explains
aboyt the methodology involved in execution of box
pushing technique .The design will be carried out as per
Indian Standards ,particularly Indian railway standards,
IRC, IRS, IS CODES .In which design of major components
thrust bed, precast box used for the widening are done as
per IRS codes. The design of pre cast box is dome using
STADD PRO, it also includes the layout of reinforcement
details of two important structures used in method apart
from conventional methods i.e. thrust bed (main bed and
auxiliary bed), pre cast box.
Keywords: Cross Traffic Works, Box Pushing technique
(RUB), IRC,IRS,IS CODES
1. INTRODUCTION
Apart from being a embryonic source of accidents &
fatalities Level Crossings are the nation. This fact has been
understood by one and all Railway men .As such as an
alternative for the compliance of the Codal /Railway Act
provisions of facilitating the public to cross the track ,IR
has decided to construct a RUB/ROB to eliminate the LC
gates .As the volume of the work is quite hefty ,a strategy
has to be decided for the implementation of the decision
taken by the MR in his budget speech ,(and the Railway
Board accordingly ).Major chunk of the work is the
construction of RUB. Jacked box tunneling is a non-
intrusive method of constructing a new under-bridge ,
culvert or subway beneath existing surface infrastructure,
for example railways and highways. The method enables
traffic flows to be maintained throughout the construction
period, and maintained with only mirror restrictions
during brief period of tunneling .The inconvenience and
costs of disruption to infrastructure and traffic flows
experienced can be avoided by using traditional
construction methods.
2. Collection of site data.
There are two basic materials used for making transparent
concrete, one is from construction field and another from
sensing field. First, concrete is one of the most important
civil engineering materials with the advantages of rich raw
materials, low cost and simple production process and
second the optical fiber has good light guiding property
which can be arrange to transmit the light and the sun
light transmit according to pre-design road without light-
heat, light-electrical or photochemical process, and photo
elastic effect which can be used to study the stress
distribution of structures.
3. METHODS
 Box pushing method.
 Cut and cover method
 RH girder method
3.1 PRE-WORK
 All the S & T cables where protected before
starting box pushing work.
 Imposed 20kmph speed restrictions + OES and
stop dead if required.
 Isolation of track by cutting rail at 10m away from
center line of box either side.
 Soil to be removed which is accumulated adjacent
to the box.
 Proper lightning arrangement with DG set at
10KV kept ready at site.
 Making rail cluster.
 Marking centerline on top of boxes.
 1500nos of ballast bags and 500no of sand bags
kept ready at site.
 Wooden chalk / wooden sleepers 20nos kept
ready at site.
 C.C cripes 30nos kept ready at site.
3.2 STAGES
3.2.1. Excavation:
• The site is excavated to a certain calculated depth
below ground level so that box provides enough
clearance for a vehicle to pass through and road is
in gradient 1 in 40.

• Generally the excavation is done by manually or
mechanically using hydraulic excavator.
• The site having hard rock strata then excavation is
done by blasting or chiseling.
• Chiseling costly and time taking process it is done
only when the excavation is done in highly
populated area where blasting is not possible or
safe.
3.2.2 Laying of Thrust Bed:
 It is one of the important stage in box pushing
technique.
 It counters the reaction force from hydraulic jack
and transfer it into the soil, therefore providing
thrust bed is required to push the box into
embankment.
 Provision for Jacking support is made by
providing suitable pockets in the bed to
accommodate pin supports. On completion of
Jacking the thrust bed is utilized as floor bed , and
so it is left in place.
3.2.3 Casting of RCC box
• The precast box is cast in segments of convenient
length.
• The section of the box is designed as IRS codes of
practice for 25 T loading 2008.
• Leading segment (First RCC Box segment) is cast
over well set and leveled thrust bed.
• Concrete grade is generally kept as M35. 2.2
Cement Concrete
3.2.4 Pushing Operation Of Box :
 To form horizontal opening below ground
pushing of box is done by providing precast units
underground without disturbing overhead
amenities like structures & traffic.
 A thin film of grease and thick gauge plastic sheets
is provided between top of the thrust bed and
bottom of the box to avoid frictional resistance.
This is done before casting of bottom slab of the
box.
 Where soil is of poor quality drag sheet system is
also considered for least resistance of friction
 With the process of jacking the front unit is
pushed into the embankment and then excavation
is done either manually or mechanically.
 Generally the average rate of pushing of box is 1
meter in 24 hrs to ensure safety.
3.2.4 Foundation of the road
• Once the pushing of box is done, the constructed
road is open for traffic.
• The road is made up of bituminous or concrete.

5. CONSEQUENCES
5.1 Advantages
 Non-disruption to rail traffic.
 It has a better quality control.
 It is economical.
 Time of completion is less.
 It saves man power and Machinery.
 It does not involves crane and heavy equipment .
 Less involvement of other Departments
5.2 Disadvantages
 Needs trained staff and skilled supervision.
 Imposition of caution order exist for a longer
period .
 No scope of night working.
 Once the vertical & lateral alignment of box
disturbed it becomes almost impossible to rectify
it.
 It is difficult to construct in hard rock strata.
6. CONCLUSIONS
• Box pushing work means at least partly working in
blind, so problems usually come up during
execution of work
• Box pushing work require close supervisions and
monitoring and quite often the unsafe conditions
develop at these sites.
• Track must be watched regularly to see signs of
having, settlement, misalignment etc.
• Long Welded Rail (LWR) must be cut and site
isolated during box pushing
• Work must be done under block
protection/caution order only.
7. References
[1]. Highway Engineering- S.P.BINDRA, DHANPAT RAI
& SONS- 4 th Edition.
[2]. Text Book of Railway Engineering- S.C.SAXENA &
S. ARORA, DHANPAT RAI & SONS- New Delhi.
[3]. Dock & Harbour Engineering- HASMUKH P OZA,
GUTAM H OZA.
[4]. Principal of traffic and highway engineering-
Garbar & Hoel, Cengage learning.
[5]. TRB, 2010 Transportation Research Board (TRB)
Highway Capacity Manual 2010 (fifth edition) TRB,
Washington DC (2010) .
[6]. Harkey et al., 2008 D.L. Harkey, S. Raghavan, B.
Jongdea, et al. Crash Reduction Factors for Traffic
Engineering and ITS Improvement NCHRP Report No.
617 Transportation Research Board, Washington DC
(2008).
[7]. Robin et al., 2009 T. Robin, G. Antonini, M.
Bierlaire, et al. Specification, estimation and validation
of a pedestrian walking behavior model
Transportation Research Part B: Methodological, 43
(1) (2009), pp. 36–56
[8]. Railway engineering, B.L.Gupta & Amit Gupta 3rd
edition, Reprint 2012
[9]. Bridge Tunnel and Railway Engineering,
S.P.Bindra, Latest.
[10]. Railway Works Engineering, M.M.Agarwal, 4th
revised edition, Reprint 2014

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