Evaluation of Peak Ground Acceleration and Response Spectra Considering the Local Site Effects: A Probabilistic Logic Tree Approach

T. G. Sitharam and K. S. Vipin
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T. G. Sitharam: Indian Institute of Science, India
K. S. Vipin: Indian Institute of Science, India

International Journal of Geotechnical Earthquake Engineering (IJGEE), 2010, vol. 1, issue 1, 25-41

Abstract: The local site effects play an important role in the evaluation of seismic hazard. The proper evaluation of the local site effects will help in evaluating the amplification factors for different locations. This article deals with the evaluation of peak ground acceleration and response spectra based on the local site effects for the study area. The seismic hazard analysis was done based on a probabilistic logic tree approach and the peak horizontal acceleration (PHA) values at the bed rock level were evaluated. Different methods of site classification have been reviewed in the present work. The surface level peak ground acceleration (PGA) values were evaluated for the entire study area for four different site classes based on NEHRP site classification. The uniform hazard response spectrum (UHRS) has been developed for the city of Bangalore and the details are presented in this work.

Date: 2010
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