郝明辉,张艳红,陈厚群.基于ABAQUS 的黏弹性人工边界在重力坝分析中的应用[J].中国水利水电科学研究院学报,2012,(2):
基于ABAQUS 的黏弹性人工边界在重力坝分析中的应用
Application of viscous-spring artificial boundary in dynamic response analysis of gravity dam with ABAQUS
  
DOI:
中文关键词:  辐射阻尼  黏弹性边界  无质量地基  ABAQUS  重力坝
英文关键词:radiation damping  viscous-spring artificial boundary  mass less foundation  ABAQUS  gravity dam
基金项目:
作者单位
郝明辉 中国水利水电科学研究院工程抗震研究中心北京100048 
张艳红 中国水利水电科学研究院工程抗震研究中心北京100048 
陈厚群 中国水利水电科学研究院工程抗震研究中心北京100048 
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中文摘要:
      无限地基的辐射阻尼效应是影响坝体地震反应的重要因素。本文采用黏弹性边界并在非线性有限元软件ABAQUS软件上成功实施,经与理论解的结果对比,具有较高的求解精度。文中以典型的Koyna重力坝地震反应分析为例,比较了黏弹性边界与传统的固定边界无质量地基的计算结果,特别是利用混凝土损伤模型对Koyna重力坝遭遇强震时震害现象进行了初步分析,得到了大坝下游折坡处与实际遭受的地震破坏现象和破坏程度基本一致的结果。
英文摘要:
      Radiation damping effect is an important factor affecting seismic response of dam structure. In this paper the viscous-spring artificial boundary condition is adapted in the dynamic response analysis of gravity dam and the numerical implementation is provided in ABAQUS. It is proved that the method has high solution precision comparing with the theory resolution. Taking the typical gravity dam of Koyna as an example, the damaged plastic model is used in the analysis of the strong seismic response of dam, and it is shown that the damage result is similar to conventional method of fixed boundary with mass less foundation. Therefore the conclusion has some reference value on seismic study of gravity dam.
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