Optimal Isolator Parameters for Economical Mitigation of Seismic Risk for Highway Bridges

2009-06-28
In this study, closed form equations as functions of the isolator, bridge and ground motion properties are formulated to calculate the optimum characteristic strength, Qd and post-elastic stiffness, k d, of the isolator to minimize the maximum isolator displacement (MID) and force (MIF) for seismic isolated bridges (SIBs). This formulation required more than 13000 nonlinear time history analyses of simplified SIB models. The analyses results revealed that the optimum Qd and k d are highly dependent on the site soil conditions and peak ground acceleration of the ground motion.
ASCE Technical Council on Lifeline Earthquake Engineering Conference, TCLEE 2009: Lifeline Earthquake Engineering in a Multihazard Environment (2009)

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Citation Formats
M. Dicleli, “Optimal Isolator Parameters for Economical Mitigation of Seismic Risk for Highway Bridges,” Oakland, CA; United States, 2009, vol. 357, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/84246.