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15 Questions

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Concrete Bridges Superstructure

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Questions and Answers

In which type of bridge is the bending relatively reduced for intermediate spans?

Continuous bridge

Cantilever bridge (correct)

Pony Bridge

Simply supported bridge

What is the span range for which voided slab bridges can be economic?

Up to 40 m

Up to 25 m (correct)

Up to 20 m

Up to 15 m

What is the primary supporting condition for a box girder slab in concrete bridges?

Simply supported (correct)

Continuous bridge

Cantilever bridge

Semi deck Bridge

When is the web stiffener used in concrete bridges?

When web depth is more than 2 m Signup and view all the answers

What is the purpose of a ribbed slab in concrete bridges?

Lower self weight compared to solid slab Signup and view all the answers

What is the purpose of web stiffeners in steel bridges?

To prevent buckling of the web under compression load Signup and view all the answers

What is the primary function of longitudinal stiffeners in steel bridges?

To prevent buckling of the web for taller main girders Signup and view all the answers

What is the purpose of bracing in steel bridges?

To resist horizontal loads and ensure bridge stability Signup and view all the answers

Where are transverse stiffeners typically placed in steel bridges?

1.5 to 1.8 m apart for main girders above 1 m in height Signup and view all the answers

What should be considered during three stages for evaluating the impact of wind on a bridge structure?

Construction, after construction, and after loading Signup and view all the answers

Which factor has the most significant influence on the dynamic behaviour of a bridge?

Dynamic amplification Signup and view all the answers

What is the function of vertical bracing in steel bridges?

To connect the upper horizontal bracing with lower horizontal bracing and bearings Signup and view all the answers

What mainly causes horizontal forces on a bridge?

Braking and accelerating of vehicles Signup and view all the answers

What is the primary factor affecting the overall deformations (lengthening or shortening, curvature) of a bridge?

Temperature change Signup and view all the answers

What influences the load values on a bridge?

Distribution of loads and vehicle natural frequencies Signup and view all the answers