14.16.2. Case Study: Kobe Earthquake (1995)

Try these first

1. 1.

   What does natural frequency refer to?

   Hint

   Consider how the absence of external forces affects vibration.

2. 2.

   What is resonance?

   Hint

   Think about the danger of matching frequencies.

3. 3.

   What is the key reason short-period structures suffered during the Kobe earthquake?

   • They were built with poor materials
   • They matched ground motion frequencies
   • They were too tall

   Hint

   Consider the effects of resonance.

4. 4.

   True or False: Engineers must integrate site frequency analysis in building design to prevent failures.

   • True
   • False

   Hint

   Think about the lessons from the Kobe earthquake.

5. 5.

   Propose a design solution for a short-period structure to minimize resonance during a seismic event.

   Hint

   Think about ways to disrupt matching frequencies.

6. 6.

   Evaluate how varying soil conditions could change the risk profile for new buildings in seismic zones.

   Hint

   Consider past earthquake case studies.