This experiment uses earthquake-like records as base motion to the test structure during the experiment and hence simulate a real earthquake. This experiment allows users to see how a structure would respond to real earthquakes. The input motion delivered to the test structure are scaled and shortened versions of the earthquake records. The acceleration data in earthquake-like record is converted to a voltage signal which is sent to the shake-table delivering the base motion to the test-structure.

Please note that the result is only a rough experiment of how the test structure would respond to a real earthquake and cannot be used as an accurate prediction model.

Choose one of the earthquake-like records listed in the pull down menu below as base excitation for your Webshaker experiment and then click "Select" button.

1. Imperial Valley (1940), El Centro Station 2. San Fernando(1971), Pacoima Dam 3. San Fernando(1971), Millikan Library CalTech 4. Michoacan Mexico(1985), Station TACY 5. Saguenay(1988), North-Eastern Canada 6. Loma Prieta(1989), Station LGPC 7. Landers (1992), Lucerne Valley Station 8. Northridge (1994), Rinaldi Receiving Station 9. Northridge (1994), Sylmar Converter Station 10. Northridge (1994), Sylmar County Hospital Parking Lot 11. Nisqually(2001), Station ALK 12. Impulse Pattern 13. Ricker Wavelet

You can view time-domain plots of the Input Motion files here

You can view frequency-domain plots of the Input Motion files here