某高拱坝在地震动作用下抗震性能研究

摘要

In this paper,the anti-seismic property of a under construction high arch dam has been investigated under the ground vibrates.Theories about the transverse contact,foundation treatment and concrete damage have been introduced.Nonlinear finite element analysis of the arch has been done.The self-vibration characteristics,Stress and distribution,displacement distribution,damage distribution and distribution of transverse opening of the dam have been calculated.The dynamic anti-sliding stability of the arch dam are also been analyzed.It can be seen from the resultthat,the arch dam can meet its seismic performance requirement.It well be better if the necessary measures were taken to reinforce the arch abutmentand the following parts.Methodes to control the opening of the dam is also important.%论文针对我国某一在建的高混凝土拱坝进行了地震动作用下的抗震性能分析研究,介绍了其横缝接触、地基处理和混凝土损伤所用到的理论,对其进行了非线性有限元分析,概述了其自振特性、坝体应力大小和分布、坝体位移分布、坝体损伤分布和坝体横缝开度分布,对其进行了拱端动力抗滑稳定分析.从结果来看,坝体整体能够满足其抗震性能的要求,可采取必要措施对拱端及其以下的部位进行加固处理,控制坝体中部坝缝的开度.