温度荷载作用下拱坝基岩三维非线性有限元分析  

Three-dimensional Nonlinear Finite Element Analysis of Arch Dam Bedrock under Temperature Loads

作　　者：陈华杰 CHEN Hua-jie(Zhejiang Design Institute of Water Conservancy and Hydroelectric Power,Hangzhou 310002,China)

机构地区：[1]浙江省水利水电勘测设计院

出　　处：《浙江水利水电学院学报》2019年第6期13-17,48,共6页Journal of Zhejiang University of Water Resources and Electric Power

摘　　要：为较为精确的得到拱坝基岩在温度荷载作用下的应力应变分布规律,通过ANSYS开发了混凝土拱坝及基岩三维有限元分析模型,以此求得拱坝基岩在温度(升、降)荷载作用下位移、应力分布规律,发现温度荷载会对拱坝基岩的应力、位移分布产生较大影响,进一步分析两种温度荷载作用下,基岩应力位移分布差异及原因。再预测拱坝基岩在温度荷载作用下可能出现的破坏形式及位置,并提出相应的工程治理措施。In order to obtain the accurate stress and strain distribution law of arch dam bedrock under temperature load,through ANSYS,an analytical procedure of concrete arch dam and bedrock three-dimensional finite element is developed and adopted to get the displacement and the stress distribution of the bedrock with loads of temperature-up or temperature-down.It is found that temperature load has great influence on stress and displacement distribution of arch dam bedrock.The cause and distribution difference of bedrock displacement and stress are analyzed with temperature-up and temperature-down.Finally,the positions of bedrock and the possible destructional forms are forecast,and some corresponding control measures are put forward as well.

关 键 词：拱坝 基岩 温度荷载 应力 位移 

分 类 号：TV642.4[水利工程—水利水电工程]