1.12.3. Mitigation of Resonance Effects

Try these first

1. 1.

   What happens during resonance?

   Hint

   Think about how frequencies interact.

2. 2.

   Why is damping important in buildings?

   Hint

   Consider what happens to swings when they are damped.

3. 3.

   What is resonance in structural engineering?

   • A phenomenon that occurs rarely
   • When external frequency matches natural frequency
   • A method to amplify sound

   Hint

   Think about what happens when two frequencies align.

4. 4.

   True or False: Increasing damping always lowers the risk of resonance.

   • True
   • False

   Hint

   Consider how damping affects movement in structures.

5. 5.

   A structure has a natural frequency of 2 Hz, while an expected seismic event has dominant frequencies around 1.5 Hz. What are potential design modifications to mitigate resonance?

   Hint

   Consider how adjustments to mass or stiffness can shift the natural frequency.

6. 6.

   Evaluate the consequences of not addressing resonance in the design of high-rise buildings in earthquake-prone areas.

   Hint

   Reflect upon the historical instances where buildings failed due to resonance.