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Site-Specific Response Spectra Estimation at Designated Seismic Stations of the Puerto Rico Strong Motion Program Seismic Network

Description: 

Site-specific response spectra were estimated at sites location of designated permanent seismic stations of the Puerto Rico Strong Motion Program Seismic Network (PRSMP-SN). Models of response spectrum are widely used in earthquake-resistant buildings design. However, they do not necessarily represent the behavior of a specific earthquake, and the soil amplification is poorly incorporated. Site-specific response spectra have the merit to overcome the two issues mentioned above. Designated sites of the PRSMP-SN were previously characterized by means of active-, and passive-MASW in order to estimate the V_S30 shear-wave velocities, and the site transfer function estimation using ambient vibration measurements. Results of the 2D V_S-Z profiles of the studied sites and their site/soil classification according to NEHRP range from soil type D, and C for the majority of the sites. Shear-wave velocity range were between 260 to 300 m/s (Stiff-soil), to 350 to 680 m/s (Soft-rock). In terms of NEHERP V_S30 the soil type classification the majority of the sites still on the category of soil type C. Results of the site-specific response spectra characteristics are discussed in terms of applications of engineering seismology.

Session: How Well Can We Predict Broadband Site-Specific Ground Motion and Its Spatial Variability So Far? -III

Type: Oral

Date: 5/1/2024

Presentation Time: 03:00 PM (local time)

Presenting Author: Carlos

Student Presenter: No

Invited Presentation: 

Authors