山东海阳核电站一期取水沟道抗震性能分析  

Analysis of Earthquake Resistant Behavior of Water Channel in Shandong Haiyang Nuclear Power Project

作　　者：金煜皓 赵杰[1] 尹训强[1] 

机构地区：[1]大连大学土木工程技术研究与开发中心,辽宁大连116622

出　　处：《水利与建筑工程学报》2016年第1期132-138,共7页Journal of Water Resources and Architectural Engineering

基　　金：辽宁省教育厅一般项目(L2015035);大连市科技计划项目(2014E13SF145)

摘　　要：以山东海阳核电站一期取水沟道工程为研究背景,对该取水沟道抗震性能进行分析。选取代表性断面,基于非线性有限差分软件FLAC^(3D)建立三维结构-地基模型,采用动力时程反应分析方法,在模型四周设置黏性边界模拟无限地基辐射阻尼效应,进而计算核电站取水沟道直管段及弯道段在静动力工况(即内外温差、水锤压力、地震等多荷载复杂环境)下内力及变形的变化情况,给出衬砌结构内力包络图。数值分析结果表明:结构内力随沟道内外温差发生显著变化;水锤压力对沟道内力影响明显,设计施工时应对薄弱截面进行加密配筋处理;地震动引起的相对错动变形较小,说明该核电站取水沟道设计方案中提出的伸缩缝设置方案(2cm)是可行的,计算方法和分析成果可为核电站取水沟道抗震性能分析提供参考。This paper took the water intake channel in the first stage of Shandong Haiyang nuclear power project as an example,by using the dynamic time-history analysis method and selecting representative sections,the three dimensional soil-structure model was developed by using FLAC3^（3D）software,which sets viscous boundary in order to simulate the infinite foundation radiation damping effect. The internal forces and deformation of the channel structure under temperature,water hammer pressure,earthquake are considered and the envelope diagrams were derived. The numerical results show that： the internal force of the channel structure changes with the variation of the temperature between inside and outside. The influence of water hammer pressure is obvious,so intensive reinforcement at the weak section should be applied during the design and construction. The relative deformation caused by the earthquake is small,which means setting scheme of expansion joint is feasible. The calculation and analysis results could provide the guidance to analyze earthquake resistant behavior of water channels of the nuclear power plant.

关 键 词：FLAC3D软件 取水沟道 内力包络图 抗震性能分析 

分 类 号：TV312[水利工程—水工结构工程]