40.21. Codal Provisions for Bridges (IS 1893 Part 3)

Try these first

1. 1.

   What is dynamic analysis?

   Hint

   Think about how structures react during earthquakes.

2. 2.

   Define seismic stoppers.

   Hint

   They are similar to shock absorbers.

3. 3.

   What is the purpose of modal analysis in bridge design?

   • To predict static loads
   • To analyze dynamic response
   • To calculate material costs

   Hint

   Focus on how bridges react during seismic events.

4. 4.

   True or False: Seismic stoppers are not necessary in bridge design.

   • True
   • False

   Hint

   Consider what happens to structures without these devices.

5. 5.

   Design a hypothetical bridge that incorporates dynamic analysis, detailing the specific types of dampers and their arrangement.

   Hint

   Consider where the bearings would go and what types of dampers might best suit the design.

6. 6.

   Assess the seismic design of an existing bridge. Identify its strengths and weaknesses regarding seismic restraints.

   Hint

   Look into how the bridge was designed to respond to different seismic zones.