STUPIDSID
Solve any one question from Q.1&Q.2
1
Give the classification of bridges accordings to material of construction and forms of super structure.
10 M
2
What is dyanamic effect in railway steel bridges? Explain how it is calculated.
10 M
Solve any one question from Q.3&Q.4
3
Write a note on Courbons method
10 M
4
An interior pannel of a T beam deck slab bridge is 4.0m × 3.5m. Calculate the maximum bending moment developed due to placing of IRC class A loading.
10 M
Solve any one question from Q.5&Q.6
5
Design the member (U-3, U-4), (U-3, L-3) for the broad gauge railway steel truss bridge shown in Fig. 1.The details are as follows.
a) Weight of stock rail = 0.50 kN/m,
b) Weight of check rail = 0.40 kN/m
c) Timber sleepers of size = ( 0.25×0.25×2.8)m@ 0.45 m c/c
d) Unit weight of timber = 7.5kN/m3
e) Spacing of truss = 5.0 m c/c
f) Equivalent uniformly distributed load for BM and SF are 5831 and 6254 kN respectively.
g) CDA = 0.255
!mage
a) Weight of stock rail = 0.50 kN/m,
b) Weight of check rail = 0.40 kN/m
c) Timber sleepers of size = ( 0.25×0.25×2.8)m@ 0.45 m c/c
d) Unit weight of timber = 7.5kN/m3
e) Spacing of truss = 5.0 m c/c
f) Equivalent uniformly distributed load for BM and SF are 5831 and 6254 kN respectively.
g) CDA = 0.255
!mage
18 M
6
For the Problem given in Q.5 design the members(L-3, L-4) and (L0-U1).
18 M
Solve any one question from Q.7&Q.8(a,b)
7
Design a Elastometric bearing for the following data:
a) Maximum Normal Load = 1200kN
b) Minimum Normal Load = 350 KN
c) Lateral Load = 50 kN
d) Longitudinal Load = 80KN
e)Total Longitudinal Translation = 10mm
f) Rotation at support = 0.001
g) Shear modulus of elastomer = 1.2N/mm2
h) Allowable Compressive stress of Concrete = 8 N/mm2
i) Allowable Compressive stress of elastomer = 9N/mm2 Also sketch the details of the bearing.
a) Maximum Normal Load = 1200kN
b) Minimum Normal Load = 350 KN
c) Lateral Load = 50 kN
d) Longitudinal Load = 80KN
e)Total Longitudinal Translation = 10mm
f) Rotation at support = 0.001
g) Shear modulus of elastomer = 1.2N/mm2
h) Allowable Compressive stress of Concrete = 8 N/mm2
i) Allowable Compressive stress of elastomer = 9N/mm2 Also sketch the details of the bearing.
16 M
8(a)
Thevertical reaction at the end of bridge girder is 2000 kN. The vertical reaction at each end of the e girder due to overturning effect is 100 kN. Design a roller bearing if the least allowable perpendicular distance between the faces of adjacent roller after the revolved position may be taken as 4mm. The centers of the rollers travel 20mm.
10 M
8(b)
Explain the design procedure of Rocker and Roller bearing.
6 M
Solve any one question from Q.9(a,b) &Q.10
9(a)
Explain step-by-step procedure for design of an abutment.
8 M
9(b)
Explain the analysis of abutments and piers.
8 M
10
Design a RC abutment for RC T-beam deck slab bridge with the following data.
a) Span = 40m
b) Width of carriageway = 7.5 m
c) Live load on the deck slab = IRC Class AA
d) Dead weight of span = 10000 kN
e) Longitudinal force = 250 kN
f) RL of formation = 640.150m; RL of cg of girder = 638.100m; RL of center of bearing pin = 637.000m; RL of bed level = 629.800 m
g) Unit weight of backfill soil = 18kN/m3
h) Allowable bearing pressure = 220 kN/m2
i) μ=0.32, Φ=30°, Ground acceleration = 0.11g
j) Materials = M 30 grade concrete and steel of grade Fe 500
a) Span = 40m
b) Width of carriageway = 7.5 m
c) Live load on the deck slab = IRC Class AA
d) Dead weight of span = 10000 kN
e) Longitudinal force = 250 kN
f) RL of formation = 640.150m; RL of cg of girder = 638.100m; RL of center of bearing pin = 637.000m; RL of bed level = 629.800 m
g) Unit weight of backfill soil = 18kN/m3
h) Allowable bearing pressure = 220 kN/m2
i) μ=0.32, Φ=30°, Ground acceleration = 0.11g
j) Materials = M 30 grade concrete and steel of grade Fe 500
16 M
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