基于 ABAQUS的面板砂砾石坝三维动力有限元分析

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。

Finite element analysis of 3D dynamics for concrete face rock fill dam based on ABAQUS

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.