基于ABAQUS的面板砂砾石坝三维动力有限元分析
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摘要
建立了新的有限元分析方法,为准确合理地进行面板砂砾石石坝的三维动力有限元分析提供参考。在对砂砾石料的动力本构模型及其分析方法进行分析与选择的基础上,利用ABAQUS软件实现砂砾石的动力等效线性粘弹性模型,对一座已建成的高面板砂砾石坝进行了地震响应分析,重点分析大坝的反应加速度、动位移和残余变形等动力反应情况。结果表明:坝体在地震作用下的响应不强烈,但在顺河向地震作用下坝顶出现鞭梢效应,需采取相应的抗震工程措施。
The paper established a new finite element analysis method so as to provide a reference for the accurate and reasonable 3D dynamic analysis of CFRD. By means of analyzing and selecting the dynamic constitutive model and analysis of the sand-gravel-fill,It realized the dynamic equivalent linear viscoelastic model of grit stone based on ABAQUS software,and carried out the seismic response analysis for a built high concrete face rock-fill dam,and focused on the analysis of dynamic response such as dam response acceleration,dynamic displacement and residual deformation. Results show that the dam response under the action of earthquake is not strong,but under the action of earthquake along with the river direction,the whipping effect appears in the dam crest and it is necessary to take the corresponding measures of seismic engineering.
The paper established a new finite element analysis method so as to provide a reference for the accurate and reasonable 3D dynamic analysis of CFRD. By means of analyzing and selecting the dynamic constitutive model and analysis of the sand-gravel-fill,It realized the dynamic equivalent linear viscoelastic model of grit stone based on ABAQUS software,and carried out the seismic response analysis for a built high concrete face rock-fill dam,and focused on the analysis of dynamic response such as dam response acceleration,dynamic displacement and residual deformation. Results show that the dam response under the action of earthquake is not strong,but under the action of earthquake along with the river direction,the whipping effect appears in the dam crest and it is necessary to take the corresponding measures of seismic engineering.
引文
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[4]赵剑明,汪闻韶,常亚屏,等.高面板坝三维真非线性地震反应分析方法及模型试验验证[J].水利学报,2003,34(9):12-18.
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[2]费康,刘汉龙.ABAQUS的二次开发及在土石坝静、动力分析中的应用[J].岩土力学,2010,31(3):881-890.
[3]潘家军,王观琪,江凌,等.基于ABAQUS的高混凝土面板堆石坝地震反应三维非线性分析[J].水力发电学报,2011,30(6):80-84.
[4]赵剑明,汪闻韶,常亚屏,等.高面板坝三维真非线性地震反应分析方法及模型试验验证[J].水利学报,2003,34(9):12-18.
[5]潘家军,饶锡保,张计,等.超宽河谷上面板堆石坝地震响应特性分析[J].世界地震工程,2010,26(S1):301-304.
[6]王霄.面板堆石坝三维动力响应分析[D].天津:天津大学,2005.
[7]丁陆军.面板堆石坝三维动力反应分析[D].西安:西安理工大学,2005.
[8]国家电力公司西北勘测设计研究院.黄河公伯峡水电站工程初步设计重编报告(第五篇枢纽布置及建筑物)[R].西安:国家电力公司西北勘测设计研究院,1995:1-119.
[9]中国水利水电科学研究院.黑泉水库混凝土面板堆石坝坝体及坝基土料动力特性试验研[R].中国水利水电科学研究院,2005.10.
[10]刘小生,王钟宁,赵剑明,等.面板堆石坝振动模型试验及动力分析研究[J].水利学报,2002,33(2):29-35.
[11]胡文源,邹晋华.时程分析法中有关地震波选取的几个注意问题[J].南方冶金学院学报,2003,24(4):25-28.
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