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Optimal Isolator Parameters for Economical Mitigation of Seismic Risk for Highway Bridges
Date
2009-06-28
Author
Dicleli, Murat
Metadata
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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.
Subject Keywords
Bridges, Highway
,
Economic Factors
,
Isolation
,
Parameters
,
Seismic Effects
URI
https://hdl.handle.net/11511/84246
DOI
https://doi.org/10.1061/41050(357)11
Conference Name
ASCE Technical Council on Lifeline Earthquake Engineering Conference, TCLEE 2009: Lifeline Earthquake Engineering in a Multihazard Environment (2009)
Collections
Department of Engineering Sciences, Conference / Seminar
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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, kd, of the isolator to minimize the maximum isolator displacement (MID) and force (MIF) for seismic isolated bridges (SIBs). For this purpose, first, sensitivity analyses are conducted to identify the bridge, isolator and ground motion parameters that affect the optimum values of Qd and kd. Next, for the identif...
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BibTeX
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.
