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Date of Publication:2015-01-01

Journal:水利学报

Affiliation of Author(s):建设工程学部

Issue:1

Page Number:118-124

ISSN No.:0559-9350

Abstract:The index based concrete strength for seismic safety evaluation of arch dam has become difficult to meet the requirements of hydropower project construction in high altitude, alpine and high intensity earthquake region. The IDA(Incremental Dynamic Analysis) was performed to study the nonlinear seismic behavior of arch dam. Two new seismic safety evaluation indices of damage area ratio and damage volume ratio were proposed and the correlations of these two indices and dynamic displacements at different part of arch dam with seismic peak acceleration were analyzed. The results show that the proposed damage area ratio and damage volume ratio can reflect the damage evolution trend with earthquake intensities and the seismic bearing capacity more obviously than previous index and more suitable for arch dam seismic safety evaluation. ©, 2015, China Water Power Press. All right reserved.

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