Impact of Modification on Ground Motion Characteristics and Geotechnical Seismic Analyses for a California Site |
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| Authors: | Clinton Carlson Dimitrios Zekkos Adda Athanasopoulos-Zekkos Jonathan Hubler |
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| Institution: | Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan, USA |
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| Abstract: | The impact of different modification techniques on ground motion characteristics and results of seismic geotechnical analyses is investigated for a site in California. Twenty-eight motions were selected and scaled and also modified using both time domain (TD) and frequency domain (FD) techniques. PGV and PGD of the TD-modified motions are found to be larger than their FD-modified counterparts, but slightly less than the scaled ground motion characteristics. Cyclic stress ratios and amplification factors are similar for all sets of motions. Newmark-type slope displacements caused by the scaled and modified ground motions are similar (within 25%) for a variety of sliding masses. |
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| Keywords: | Time Domain Modification Frequency Domain Modification Modification Effects Ground Motion Characteristics Geotechnical Seismic Response Analyses |
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