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Mayssa Dabaghi, Yara Daoud, Armen Der Kiureghian

2018/7/25

Proceedings of the 11th US national conference on earthquake engineering

Simulation of near-fault ground motions for randomized hypocenter and site locations Page 1 Simulation of near-fault ground motions for randomized hypocenter and site locations Mayssa Dabaghi and Yara Daoud American University of Beirut Armen Der Kiureghian American University of Armenia 11th National Conference on Earthquake Engineering – Los Angeles, CA June 27th, 2018 Page 2 Motivation ∎ Recorded near-fault (NF) ground motions (GM) remain scarce ∎ Their characteristics are different from far-field GMs ∎ NF effects are not (yet) properly represented in modern codes and current ground motion prediction equations (GMPEs) 2 (figure courtesy of Y. Bozorgnia, adopted from Somerville et al. [1997]). (after Somerville et al. [1997]). Rupture directivity effect Fling Step Page 3 Rupture directivity effects (is a pulse observed? what are its amplitude and period?) depend on directivity parameters ∎ … that …