地震作用下某重力坝极限抗震能力分析

Ultimate seismic capacity of gravity dam under earthquake

基于ABAQUS建立了某拟建重力坝二维有限元模型,坝体采用塑性损伤材料,坝基为线弹性材料,对该坝在不同地震强度下的损伤分布情况、位移情况及耗能情况进行了分析。以坝体裂缝贯通上下游为失稳判别标准,该重力坝的极限抗震能力为0.3651~0.4g。

In this paper,a two-dimensional finite element model of a proposed gravity dam is established based on ABAQUS.The dam body is made of plastic damage materials and the dam foundation is a linear elastic material.The situation was analyzed,and the ultimate seismic capacity of the gravity dam was judged by the instability criterion of the cracks passing through the upstream and downstream of the dam.The results show that the ultimate seismic capacity of the gravity dam is 0.3651g~0.4g.