背管刚度对钢材应力分布与温度位移的影响  

Influence of Stiffness of Pipeline at Dam Back on Stress Distribution of Steel Wall and Temperature Displacement

作　　者：王康平[1] 李璐[1] 伏义淑[1] 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2004年第3期222-225,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：三峡工程总公司资助项目(SDH9809)

摘　　要：考虑大坝背管环向拉裂,取用了合适的环向等效弹性模量值,算出了相应的环向钢材应力,并探讨了背管刚度对钢材应力分布的影响;同条件下,用弹性力学得出了背管在任意半径处的温度径向位移计算公式,并探讨了背管刚度对背管温度位移的影响.The suitable equivalent circumferential elastic modulus is adopted to consider the cracks of pipeline at dam back. The corresponding circumferential stress of steel wall is calculated and the influence of the stiffness of pipeline at dam back on stress distribution of steel wall is discussed. In the same case, the formula for calculating the radial temperature displacement at any radius in pipeline at dam back is given by means of elasticity mechanics;and the influence of the stiffness of pipeline at dam back on temperature displacement is discussed.

关 键 词：大坝 背管刚度 钢材应力 温度位移 弹性模量 

分 类 号：TV335[水利工程—水工结构工程]