Bridge Engineering MCQ with answer and solution

Concept

Bridge Bearings

Formula

N/A

Step-by-step solution

1. Identify the primary structural function of bearings in a bridge. 2. Recall that bearings safely transmit load forces from the superstructure to the substructure while allowing controlled thermal and traffic movement. 3. Select Option A as the correct choice.

Explanation

Bridge bearings act as a connection between the top part of the bridge (superstructure) and its support pillars (substructure). Their main role is to safely transfer the weight of the bridge and traffic down to the foundation while allowing controlled movement caused by temperature changes and traffic loads.

Shortcut

To remember the primary function of Bridge Bearings, use the phrase "Bearings Bear & Transfer the Load": - Bear & Transfer: Transmits heavy loads from the Superstructure down to the Substructure. - Buffer Movement: Acts as a flexible joint allowing movement between the top deck and lower supports.

Common mistake

A common mistake is selecting Option D by confusing bridge bearings with the wearing coat or deck surface that provides a smooth riding surface, or selecting Option C by confusing bearings with protective structures like fenders designed to shield piers from debris. Students often miss that bearings are key structural components specifically meant to transfer loads from the superstructure to the substructure while accommodating movement.