36.11. Selection and Scaling of Ground Motions

Try these first

1. 1.

   What is the purpose of selecting ground motions?

   Hint

   Consider why we perform seismic assessments.

2. 2.

   Name one scaling method used for ground motions.

   Hint

   Think about how we adjust the ground motions.

3. 3.

   Why is it crucial to select ground motions that reflect actual site conditions?

   • To simplify calculations.
   • To accurately assess structural responses.
   • To meet code requirements.

   Hint

   Think about structural safety.

4. 4.

   True or False: Spectral matching adjusts ground motions based on the magnitude of an earthquake.

   • True
   • False

   Hint

   Recall the purpose of spectral matching.

5. 5.

   You are tasked to design a new bridge in an area with a significant earthquake history. Describe the steps you would take in selecting and scaling ground motions for your analysis.

   Hint

   Think about what factors influence the selection and ensure to cover design requirements.

6. 6.

   Analyze a scenario where an engineer failed to adequately scale the ground motions. What potential consequences could arise in structure performance?

   Hint

   Consider the implications on safety and integrity.