3-D Reproduction Analyses For Actual
Earthquake Behaviors Of Existing Dams
Author(s)
Y. Ariga
Abstract
Results evaluated by dynamic analysis method will be significantly affected by
the values of dynamic property. Therefore, the dynamic property values should
be quantitatively evaluated based on actual earthquake phenomena in order to
realize reliable dynamic analysis. I have developed 3-D nonlinear dynamic
analysis method for coupled dam-joints-foundation-reservoir system and in order
to verify the validity of the method developed, I have made 3-D reproduction
analyses for actual earthquake behaviors of existing dams. By these reproduction
analyses, the dynamic property values of dam and foundation have been
evaluated quantitatively. Furthermore, the efficiency of the analytical method
developed has been proved. The 3-D reproduction analysis for the actual
earthquake behavior of an existing dam is necessary to verify the efficiency of
the dynamic analysis method. Effective utilization of the earthquake motions
observed is important for realizing accurate and reliable evaluation for seismic
safety of structures.
Keywords: earthquake safety, 3-D dynamic analysis, verification, earthquake
observation, dynamic property.
1 Introduction
Confirmation and securing of dam safety against large earthquakes is very
important subject in earthquake countries. With the rapid improvement of
numerical analysis techniques, a 3-D dynamic analysis method has come to be
applied for earthquake safety evaluation of existing dams. The stresses and
strains calculated by the dynamic analysis procedure will be largely changed
according to the dynamic property values. Among the dynamic properties, the
dynamic shear modulus (or shear wave velocity) and the damping factor are the
Keywords
earthquake safety, 3-D dynamic analysis, verification, earthquake
observation, dynamic property.
Related Book
Other papers in this volume
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