基于设计反应谱的混凝土重力坝地震响应分析  

Seismic response analysis of concrete gravity dam based on design response spectrum

作　　者：魏彦军 程丽 Wei Yanjun;Cheng Li(Shandong Water Conservancy Survey and Design Institute Co.LTD.,Linyi 276000,Shandong,China)

机构地区：[1]山东省水利勘测设计院有限公司,山东临沂276000

出　　处：《吉林水利》2023年第7期31-36,共6页Jilin Water Resources

摘　　要：混凝土重力坝作为壅水建筑物在大江大河上得到广泛应用,但许多都建在地震多发区或高烈度区,受重力、水压力等长期载荷作用。为确保大坝在偶发地震荷载作用下的安全,避免失事后给人民生命财产带来灾难,有必要对其进行地震响应分析。本文以重力坝作为工程实例,建立混凝土坝体—库水—地基的多元系统模型,采用有限元法进行地震响应模拟,为坝体设计提供计算基础。Concrete gravity dams have been widely used as backwater structures in large rivers,but many of them are built in earthquake prone areas or high intensity areas,and are also subject to long-term loads such as gravity and water pressure.In order to ensure the safety of dams under accidental earthquake loads and avoid disasters to people’s lives and property after accidents,it is of vital importance to run seismic response analysis for dams.Taking gravity dam as an engineering example,this paper establishes a multi-element system model of concrete dam body,reservoir water and dam foundation,and uses finite element method to simulate seismic response,which provides the calculation basis for dam body design.

关 键 词：设计反应谱 重力坝 地震响应 设计烈度 有限元分析 

分 类 号：TV642.3[水利工程—水利水电工程]