Site Amplification Factor at Mardan
Keywords:
Site Response Analysis; Seismic Hazard; Amplification FactorAbstract
This paper presents site response analyses for a site at Mardan Campus of University of Engineering and Technology Peshawar. This study is a part of extensive instrumentation to be installed at Mardan Campus under Pak-US Earthquake Collaborative Research Program funded jointly by Higher Education Commission (HEC) and USAID. This program included installation of two subsurface and surface accelerometers in three boreholes connected to a common data acquisition system. The three boreholes 50m, 100m, and 150m deep were drilled at 3m spacing. Laboratory tests were conducted on the samples retrieved from these boreholes. The in-situ tests, which included Standard penetration test, cone penetrations test, and cross-hole test, were also conducted in the boreholes to characterize the soil at the site. Shear wave velocities at 1m depth interval were determined using cross-hole tests up to 50m depth. Seismic hazard analysis was performed and peak ground acceleration for rock was computed. To incorporate the effects of local soil geology, two compatible real time histories were selected from the data bank of Pacific Earthquake Engineering Center. Equivalent linear site response analysis was performed using DeepSoil software. Amplification spectrum was developed for the site and site response factors have been computed.
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