Seismic response and foundation liquefaction analysis of rockfill dam

XIAO Wei; LI Tai-lai; HUANG Chen-hu

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Seismic response and foundation liquefaction analysis of rockfill dam

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- Seismic response and foundation liquefaction analysis of rockfill dam
- Vol. 29, Issue S1, (2008)
- 作者机构：
  
  武汉大学设计研究总院,武汉,430072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU435
- Online First：15 April 2016，
  
  Published：2008
- 稿件说明：
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XIAO Wei, LI Tai-lai, HUANG Chen-hu. Seismic response and foundation liquefaction analysis of rockfill dam[J]. 2008, 29(S1).
DOI：

XIAO Wei, LI Tai-lai, HUANG Chen-hu. Seismic response and foundation liquefaction analysis of rockfill dam[J]. 2008, 29(S1). DOI：

摘要

利用冶勒大坝已经获得的强震监测资料进行大坝坝体及覆盖层动力参数反演，采用三维非线性有限元动力分析方法，分析冶勒大坝在其已经遭遇的最大地震，即4级地震作用下的坝体动力加速度状况，并根据计算结果判别坝基覆盖层的液化情况，进而对冶勒大坝在所遭受的4级地震下的抗震安全性作出评价。其中坝体堆石料及覆盖层砂粒料静力计算时采用邓肯E-B模型，动力计算是采用Hardin模型，地震响应分析采用等价线性法。

Abstract

Dam material and overburden dynamic parameters are inversed on the basis of strong earthquake monitoring data of Yele Dam. Then three-dimensional nonlinear finite element analysis is carried out to analyze the dynamic acceleration responses of the dam subjected to its largest earthquake so far(4 earthquake). Liquefaction of the foundation overburden is evaluated in accordance with the results by finite element analysis. Seismic safety of the dam suffered by earthquake is evaluated finally. Rockfill and overburden material models used in static calculation are Duncan E-B model

and Hardin model in dynamic calculation.3D nonlinear finite element earthquake response analysis applies equivalent linearization method.

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