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About BRTS & JDA
BRTS
“BRTS” service provides rapid
transportation to the people.
JDA
JDA is the principal agency which is
responsible for the sustainable
development of JAIPUR.
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About “DURGAPURA ELEVATED BRIDGE PROJECT”
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The Durgapura Chauraha is one of the busiest intersection due to traffic
congestion by high volume of traffic, for reducing the possibilities of
accidents and for smooth movement of traffic development of grade
separated intersection was found necessary.
Detail of Project
Name of the work = Durgapura elevated bridge
Department = Jaipur Development Authority
Agency = ARSS Infrastructure Pvt. Limited.
Cost of Project =190,000,00000 cr.
Date of Started = 13.10.2008
Duration = 18 Month
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Detail of bridge
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Total Length of bridge = 1.10 K.m.
Approach Slope = 1:40
Divider Width = 2.80 meter..
Segments width =15m
Anchor pile:-
Width of footpath on both side = 0.6 meter
Metro & Brts pier:-
No. of piers of Brts = 28nos.
No. of piles of metro =37nos.
Span of Brts pier = 30mc/c
Span b/w metro pier and brts pier=15m c/c
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Material for construction
There are many of the materials but the main materials are given below:-
Cement
Aggregate
Sand
Bentonite
Reinforcement
Concrete etc……
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Component of a bridge
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Pile
Pile cap
PierPier cap
segment
Pedestal
Bearing
Panels
Re-WallGirder
Pre cast slab
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Pile
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Pile may be defined as a column support type of foundation which may be cast in situ.
The load of the structure is transmitted by the piles to the hard stratum below or it resist by
the friction developed on the side of pile.
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Pile cap
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The loads are usually transferred to the pile group through a reinforced concrete slab,
structurally tied to the pile tops such that the piles act as one unit. The slab is known as apile cap.
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Pier
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Pier is the part of the sub structure. It upper part of the pile& below part of the pier caps
the load. The load on the pier by through the pier cap & superstructure. Pier transfer theload on the pile cap & pile.
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Pedestals
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Pedestals are provided on the top of pier cap, to give a base to girders to rest. In the reinforcement
of pedestals TMT bars of dia 12mm is used. Recess of 6mm in the pedestal is provided for
neoprene bearing. The size of pedestal is 700mm x 550mm.
Bearings
Synthetic rubber like polychloroprene have found wide acceptance for making bearing for
concrete structure, it is accepted that in countries where natural rubber is abundantly available,the bearing made out of suitable compounded NR will be more economical, even through NR is
relatively poor against and may call for earlier replacement.
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Reinforced Earth wall
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Retained Earth walls are in use for highway projects, bridge abutments, material storage
facilities and grade separation structures. The flexibility of the system, which allows for some
movement and settlement without cracking the facing panel, makes the system well suited to
seismic zones and areas with poor foundation conditions.
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Para web
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High strength polyester based strip used to replace steel as the reinforcement element within
reinforced earth wall structures.
Para web consists of discrete bundles of closely packed high
strength synthetic fibres, lying parallel to each other, encased in a tough and durable polymeric
sheath. Girder
A girder in general, is a bridge built of girder placed on bridge abutments and foundation piers.
In turn, a bridge deck is built on top of the girders in order to carry traffic.
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Fig:- Preparation of cover block4/30/2012 14
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Detail of pile cage
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There are three types of pile cage:-
Bottom pile
Middle pile
Top pile
Bottom pile
length = 10m
8 bars of 20mm
12 bars of 16mm
59 bars of 8mmClear cover = 75mm
Maximum spacing = 175mm
Ring spacing = 150mm
Master ring spacing = 2.17m
Master ring = 16mm dia
8mm bar spacing = 150mm
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Fig:- Pile cage4/30/2012 16
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Middle pile
Length = 10.5m
8 bars of 20mm
12 bars of 16mm
59 bars of 8mm
Clear cover = 75mm
Maximum spacing = 175mmRing spacing = 150mm
Master ring spacing = 2.17m
Master ring = 16mm dia
8mm bar spacing = 150mm
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Top pile
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Length = 11.5m
20 bars of 20mm
59 bars of 8mm
Clear cover = 75mm
Maximum spacing = 175mm
Ring spacing = 150mmMaster ring spacing = 2.17m
Master ring = 16mm dia
8mm bar spacing = 150mm
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Fig:- Pile cage4/30/2012 19
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Gantry girder
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Gantry girders are laterally unsupported beams to carry heavy loads from place to place at the
construction sites, mostly these are of steel material.
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Tests conducts for quality control
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Moisture content of sand (sand)
Sieve analysis (aggregate)
Compressive strength of concrete
Aggregate impact test
Test of workability (slump)
Pile load test
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THANK YOU
Quarries
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