反应谱衰减系数变化对高土石坝地震响应的影响

李宗坤; 赵梦蝶; 徐建国; 葛巍

doi:10.11779/CJGE201512023

反应谱衰减系数变化对高土石坝地震响应的影响 English Version

郑州大学水利与环境学院,河南郑州 450001

基金项目: 国家自然科学基金项目（51379192）

详细信息

作者简介:
李宗坤（1961- ）,男,教授,博士生导师,主要从事土石坝抗震安全研究与评价等方面的研究。E-mail: lizongkun@zzu.edu.cn。

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出版历程
- 收稿日期: 2015-03-20
- 发布日期: 2015-12-19

Impact of varying attenuation coefficient of response spectra on dynamic analysis of high earth-rock dams

School of Water Conservancy and Environment, Zhengzhou University, Zhengzhou 450001, China

摘要

摘要: 标准反应谱曲线下降段系数γ是水工建筑物地震响应至关重要的参数。针对高土石坝的标准反应谱衰减系数γ的取值问题,采用三维有限元分析方法,以美国开展的“下一代的地震衰减关系（NGA）”研究中Abrahamson-Silva 2007衰减关系为参考依据,定量分析标准反应谱下降段衰减系数变化对高土石坝地震响应的影响,并探讨适合高土石坝的衰减系数取值。结果表明：对于高度超过200 m土石坝,其规范化的标准反应谱下降段的衰减系数γ取0.7比0.9更为合适。
- 土石坝 /
- 反应谱 /
- 衰减系数 /
- 动力特性 /
- 地震响应
Abstract: The declining attenuation coefficients of the standard response spectrum index γis analyzed using the three-dimensional finite element method. The impact of index γon high earth-rock dams is analyzed based on the results proposed by Abrahamson and Silva (2007) whose research is funded by the American project “Next Generation Attenuation” (NGA). The suitable value for the index γis then discussed. The results show that the declining attenuation coefficient γof the standard response spectrum taking 0.7 is more suitable than 0.9 for the earth-rock dam which is higher than 200 m.
- earth-rock dam /
- response spectrum /
- attenuation coefficient /
- dynamic characteristic /
- earthquake response

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参考文献(18)

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