基于黏弹性人工边界的高重力坝动力特性分析  

Analysis of Dynamic Characteristics of High Gravity Dam Based on Viscoelastic Boundary Conditions

作　　者：徐威 赵臻真 王岳 张雪才 XU Wei;ZHAO Zhenzhen;WANG Yue;ZHANG Xuecai(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]黄河勘测规划设计研究院有限公司,河南郑州450003

出　　处：《人民黄河》2021年第12期118-122,共5页Yellow River

基　　金：国家自然科学基金资助项目(51179164)。

摘　　要：高重力坝地震响应分析是确保建筑物设计合理、评价其抗震特性的重要环节。从波动理论出发,基于Python语言对ABAQUS软件进行二次开发,得到黏弹性人工边界及其相应地震动的输入方法。通过无质量地基模型和有质量黏弹性人工边界地基模型的对比分析,说明采用人工边界模型在考虑地基的辐射阻尼效应后,能显著降低坝体的动力响应,在一定程度上更符合真实地基情况,而采用无质量地基模型进行坝体的抗震分析偏于保守。通过工程实例验证了本文黏弹性人工边界及其相应地震动的输入方法简单有效,易于实现,同时能保证一定的精度,适合于高混凝土重力坝抗震分析。The seismic response analysis of high gravity dam is an important step to ensure the reasonable design of buildings and evaluate their seismic characteristics.Based on the wave theory,the input method of viscoelastic artificial boundary and corresponding ground motion was obtained in the ABAQUS software,which was redeveloped based on Python language.Then the rationality of the method was proved by a simple example and applied to a gravity dam project.The results show that the method is simple,effective,easy to implement and it can en⁃sure certain accuracy,which is suitable for the seismic analysis of a high concrete gravity dam.

关 键 词：高重力坝 地震响应分析 黏弹性人工边界 地震动输入方法 ABAQUS二次开发 

分 类 号：TV642.4[水利工程—水利水电工程] TV312