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Estimating seismic demands for 'ordinary' bridges crossing fault-rupture zones
Goel, Rakesh K.; Chopra, Anil K.
UCB/EERC-2008/01, Earthquake Engineering Research Center, University of California, Berkeley, 2008-02-15, PDF (1.0 MB)
The objective of this research is to develop rational, simplified methods - simpler than nonlinear response history analysis (RHA) - rooted in structural dynamics theory, for estimating seismic demand for "ordinary" bridges crossing fault-rupture zones. The first phase focused on developing an improved understanding of the role that shear keys play in affecting the seismic response of "ordinary" bridges crossing fault-rupture zones. The second phase developed two approximate procedures for estimating peak responses of linearly-elastic "ordinary" bridges crossing fault-rupture zones: response spectrum analysis (RSA) procedure and a linear static analysis procedure. The final phase extended the approximate procedures to estimate seismic demands for "ordinary" bridges deforming into their inelastic range and led to development of three approximate procedures for estimating seismic demands for bridges crossing fault-rupture zones and deforming into their inelastic range: modal pushover analysis (MPA), linear dynamic analysis, and linear static analysis.
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