9a01702 bridge engineering

7/27/2019 9A01702 Bridge Engineering

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Code: 9A01702

B.Tech IV Year I Semester (R09) Regular & Supplementary Examinations December/January 2013/14

BRIDGE ENGINEERING

(Civil Engineering)

Time: 3 hours Max. Marks: 70

Answer any FIVE questions

All questions carry equal marks(Use of codes IRC:6-2000, IRC:21-2000, IS 456:2000, IS 800:2007, IRC:83-(Part-I)-1999, IRC:83-(Part-II)-1987 and Pigeauds curves is

permitted in the examination hall)

*****

1 Explain the importance of the site investigation of the bridge design.

2 Explain the various loading cases of the box culvert with neat diagram.

3 Design the interior slab panel of a two-lane T-beam bridge to be built on a state highway for

the class AA tracked vehicle. The bridge consists of five spans of 16.5 m. Assume the

preliminary dimensions of the two-lane bridge as per the Indian road congress specifications,

moderate exposure and cement concrete wearing coat.

4 Design the longitudinal girder. Use the given details from the problem number 3.

5 Single lane (BG) plate girder bridge is situated in a small river. Write the step by step design

procedure for the same.

6 (a) List the different types of connectors used in the composite bridge.

(b) What is the purpose to provide the shear connectors in the composite bridge?

7 (a) Write the different types of bearings used in the bridge.

(b) What is the purpose to provide the bearings in the bridge?

8 Explain briefly for the following forces acting on pier with their design steps:

(i) Water current force.

(ii) Wind forces.

(iii) Buoyancy.

*****

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Code: 9A01702


BRIDGE ENGINEERING

(Civil Engineering)





*****

1 How the foundation and pier of the bridge affect the economy and cost of the construction?

Explain briefly with example.

2 Design the RC box culvert bridge without check for shear and deign of herb, situated in thestate highway with following data:

Width of the bridge : 12m Wearing course : 56mm thickCondition of exposure : Moderate Depth of foundation : 1.35mClear span : 5m Height of the vent : 3mLoad case : AA tracked vehicleM20 grade concrete and HYSD bars.

3 Explain the step by step design procedure of the interior deck slab bridge.

4 Design the intermediate longitudinal girder of the bridge by Courbons method for the

maximum loading of class AA tracked vehicle. An RCC bridge consists of 3 longitudinal girdersand 5 cross beams with the span of 15 m. Assume the other preliminary dimensions of this two

lane bridge as per the Indian road congress specifications, moderate exposure and cement

concrete wearing coat.

5 List any seven elements of the plate girder bridge and explain its important feature related to

the design.

6 How the monolithic action is achieved between the RC slab deck and steel girder in the

composite bridge?

7 (a) Write the general features of bearings used in the bridge.

(b) Compare the steel rock and roller bearing with elastometric bearing along with the application.

8 (a) Write short notes about the importance of the stability analysis of piers.

(b) Write any four different forces acting on an abutment. Explain briefly and draw the neat

diagrams for the necessary forces.

*****

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Code: 9A01702


BRIDGE ENGINEERING

(Civil Engineering)





*****

1 Briefly explain the loading standards used for the highway bridges. Compare the same with the

railway bridge loading standards.

2 Explain the various components of the culvert along with the design procedure.

3 An RCC deck slab is to be constructed over a channel on a national highway for class AA

tracked vehicles. The effective span is 4.3 m. Calculate the net effective width of dispersion for

two wheels of class AA tracked vehicle by effective width method.

4 Design the interior slab panel of a two lane T-beam bridge to be built on a state highway for

the class AA tracked vehicle. The bridge consists of five spans of 15 m. Assume the

preliminary dimensions of the two lane bridge as per the Indian road congress specifications,

moderate exposure and cement concrete wearing coat.

5 Explain the various components of the plate girder bridge along with the design procedure.

6 Explain the shear connector design in the composite bridge.

7 (a) Write the importance of bearings used in the bridge.

(b) Compare the efficiency and salient features of elastometric bearing with steel rock and roller

bearing.

8 (a) Explain the different type of wing walls.

(b) Write any four different forces acting on a pier. Explain briefly and draw the neat diagrams for

the necessary forces.

*****

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Code: 9A01702


BRIDGE ENGINEERING

(Civil Engineering)





*****

1 Briefly explain the loading standards used for the railway bridges. Compare the same with the

highway bridge loading standards.

2 Design the RC box culvert bridge without check for shear and design of herb, situated in thestate highway with the following data:

Width of the bridge : 10m Wearing course : 60mm thickCondition of exposure : Moderate Depth of foundation : 1.5mClear span : 6m Height of the vent : 3.5mLoad case : AA tracked vehicleM25 grade concrete and HYSD bars.

3 An RCC deck slab is to be constructed over a channel on a national highway for class AA

tracked vehicles. The effective span is 4.7 m. Calculate the net effective width of dispersion for

two wheels of class AA tracked vehicle by effective width method.

4 The bridge consists of five spans of 16.5 m. Assume the preliminary dimensions of the two

lane bridge as per the Indian road congress specifications, moderate exposure and cement

concrete wearing coat. Design the interior slab panel of a two lane T-beam bridge to be built

on a state highway for the class AA tracked vehicle.

5 Explain the step by step design procedure of the welded plate girder bridge.

6 Write the advantages of the composite bridge. Briefly explain the behavior of the composite

bridge.

7 What is the purpose to provide the bearings in the bridge? How is the bearings behave during

the earth quake loading/wind loading?

8 Explain briefly for the following forces acting on the abutments with their design steps:

(i) Force due to breaking.

(ii) Active earth pressure.

(iii) Horizontal force due to temperature and shrinkage.

*****

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9a01702 bridge engineering

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