3-D Analytical Method For
The Discontinuous Behaviour Of Large Dams
Against Surface Earthquake Faults
Author(s)
Y. Ariga
Abstract
Confirmation and the securing of safety against a surface earthquake fault is an
important subject for long and large structures, such as dams, tunnels, railways,
highways, and so forth. About 100 years ago, several dams constructed along the
San Andreas Fault were damaged by surface fault displacement during the 1906
San Francisco Earthquake. Recently, the Shih-Kang Dam was destroyed by
surface fault displacement during the 1999 Taiwan Chi-chi Earthquake. As for
the seismic safety evaluation against strong earthquake motions, many analytical
methods have been practically developed thus far. However, the analytical
method for evaluating safety against fault displacement has not yet been
established. We have devised an analytical method for evaluating the
discontinuous behaviour of concrete dams by applying the 3-D dynamic analysis
method for the coupled dam-joint-foundation-reservoir system. The applicability
of the method proposed in this study was examined by the analyses for the
concrete gravity dam.
Keywords: fault displacement, 3-D dynamic analysis, discontinuous behaviour,
concrete dam, seismic safety.
1 Introduction
The Upper Crystal Dam (earth-fill, height 23m), the Upper Howell Dam (earthfill,
height 11m), the Old San Andreas Dam (earth-fill, height 8.5m) and so forth,
which were constructed along the San Andreas Fault, were damaged by fault
displacement during the 1906 San Francisco Earthquake [1, 2]. The Shih-Kang
Dam (concrete gravity, height 25m) was destroyed by the vertical relative
Keywords
fault displacement, 3-D dynamic analysis, discontinuous behaviour,
concrete dam, seismic safety.
Related Book
Other papers in this volume
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