摘要
日本的东日本大地震(日本3.11地震)对福岛核电站的破坏引起国内外高度重视,取水隧道作为核电站冷却循环供水设施,其抗震可靠性十分重要。为了研究某核电厂的取水隧道取水头部在横向地震动作用下的结构安全性,采用通用有限元程序ABAQUS建立三维土层-结构模型,对取水隧道进行了地震响应数值模拟计算。通过计算取水头部特殊段衬砌(闭口环、开口环)和立管结构在地震作用下的位移和内力,验算了取水隧道结构设计在7度0.15g地震加速度作用下的结构抗震可靠性,通过分析说明结构设计满足抗震要求。研究可为核电厂取水隧道取水头部结构地震响应和结构设计提供参考。
The damage of Fukushima nuclear power plant on East Japan earthquake caused international attention.Seismic reliability analysis of water intake tunnel is very important,which is a necessary supply facility to provide cooling water for nuclear power plant.To study the structural safety of the special section under the transverse earthquake affection,a threedimensional soil-structure model established by ABAQUS software was used to calculate the seismic response for the nuclear power plant water intake tunnel.The deformation and internal force of special section of the tunnel(closed segment and open segment) and vertical standpipe under the earthquake action were analyzed,and the reliablity of water intake tunnel was verified under the action of the earthquake peak acceleration(0.15g).The result of FEM calculation shows that earthquake resistant behavior of the special structure is in good condition.The research can provide a useful method for seismic response analysis of water intake tunnel head special structure.
出处
《建筑结构》
CSCD
北大核心
2012年第S1期246-250,共5页
Building Structure
基金
国家自然科学基金项目资助(41102172)
关键词
取水隧道
特殊段
横向地震反应
土-结构模型
water intake tunnel
special section
transverse seismic response
soil-structure model
