27.9.2. Scaling Techniques

Try these first

1. 1.

   What does uniform scaling involve?

   Hint

   Focus on what uniform scaling means in terms of the recorded data.

2. 2.

   Name one advantage of spectral matching.

   Hint

   Think about how accurately the method represents the dynamics of earthquakes.

3. 3.

   What is the primary purpose of scaling techniques in earthquake engineering?

   • To improve the aesthetics of buildings
   • To align ground motion records with design spectra
   • To reduce costs in construction

   Hint

   Think about the relationship between ground motions and structural integrity during earthquakes.

4. 4.

   True or False: Spectral matching only modifies the amplitude of ground motion records.

   • True
   • False

   Hint

   Consider what else might need to be adjusted beyond just amplitude.

5. 5.

   A ground motion record shows peak acceleration of 0.6g, but the design response spectrum requires 0.9g. If uniform scaling is used, what is the scaling factor and how might this impact the accuracy?

   Hint

   Consider dividing the desired acceleration by the recorded value.

6. 6.

   In a study, engineers want to apply spectral matching to a recorded ground motion that primarily affects high frequencies. How should they approach this task? Discuss any potential limitations.

   Hint

   Reflect on the significance of incorporating all frequencies in the matching process.