Effect of foundation models on seismic response of arch dams

被引：21

作者：

Jin, Ai-Yun ^{[1
]}

Pan, Jian-Wen ^{[1
]}

Wang, Jin-Ting ^{[1
]}

Zhang, Chong ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China

[2] Chengdu Engn Corp Ltd Power China, Chengdu 610072, Sichuan, Peoples R China

来源：

ENGINEERING STRUCTURES | 2019年 / 188卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Arch dam; Seismic response; Damping ratio of foundation; Foundation size; SYSTEMS;

D O I：

10.1016/j.engstruct.2019.03.048

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Simulation of the infinite foundation is a key issue in the seismic response analysis of high dams. This paper studies how the major characteristics of foundation models influence the nonlinear dynamic response of arch dams when the radiation damping effect is taken into account. The nonlinear dynamic responses of the 217 m high Yebatan arch dam under construction in China is performed as a numerical example. Several key factors, including truncated size, material damping and non-uniformity of the foundation, are analyzed comprehensively. The results show that the material damping and the size of the foundation affect the dynamic response of the dam when the incident wave method is used. Neglect of the material damping of the foundation is proposed to solve this problem, and its rationality is verified. In addition, the results show that the realistic non-uniformity of the foundation should be considered in the earthquake response of arch dams.

引用

页码：578 / 590

页数：13

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