太阳辐射影响下特高拱坝温度场及变形性态研究  

Study on temperature field and deformation characteristic of super-high arch dam under influence of solar radiation

作　　者：邵晨飞[1,2,3] 许焱鑫 田始光[4] 赵二峰 SHAO Chenfei;XU Yanxin;TIAN Shiguang;ZHAO Erfeng(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China;Cooperative Innovation Center for Water Safety and Hydro Science,Hohai University,Nanjing 210098,China;Shandong Electric Power Engineering Consulting Institute Co.Ltd.,Jinan 250013,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]河海大学土木与交通学院,江苏南京210098 [3]河海大学水安全与水科学协同创新中心,江苏南京210098 [4]山东电力工程咨询院有限公司,山东济南250013

出　　处：《华中科技大学学报（自然科学版）》2023年第10期142-148,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(52209159,52079046);中央高校基本科研业务费专项资金资助项目(B220201042);中国博士后科学基金资助项目(2023M730934)。

摘　　要：通过构建特高拱坝三维有限元模型,引入光线追踪算法,提出了特高拱坝所受太阳辐射遮蔽情况计算方法.结合有限元数值分析方法及预计算技术,实现了各时刻特高拱坝太阳辐射影响下的坝面及库水温度的高效数值模拟.综合考虑太阳辐射下坝体与库水温度变化特性,研究了特高拱坝温度场时空分布特性,量化分析了太阳辐射对坝体变形性态的影响.以我国某特高拱坝为例,运用所提出方法研究了太阳辐射对坝体温度场及变形性态的影响.研究结果表明:通过计算太阳辐射对特高拱坝温度场的作用效应,有利于准确掌握特高拱坝实际的温度场分布情况及变形性态.By constructing a three-dimensional finite element model of the super-high arch dam,a ray-tracing algorithm was introduced,and a calculation method for the shading of solar radiation of the super-high arch dam was proposed.Combined with the finite element numerical analysis method and precomputation technology,the efficient numerical simulation of the dam surface and reservoir water temperature under the influence of solar radiation of the super-high arch dam at each moment was realized.The temperature distribution characteristics of the dam and reservoir water under solar radiation were studied.Then the spatiotemporal distribution characteristics of the super-high arch dam temperature field were studied,and the influence of solar radiation on the dam deformation characteristic was quantified and analyzed.By taking a super-high arch dam in China as an example,the proposed method was used to study the effect of solar radiation on the temperature field and deformation characteristic of the dam body.Results of the study show that by calculating the effect of solar radiation on the temperature field of the super-high arch dam,it is beneficial to accurately grasp the actual temperature field distribution and deformation characteristic of the super-high arch dam.

关 键 词：特高拱坝 太阳辐射 温度场 变形性态 晴空模型 光线追踪算法 预计算技术 

分 类 号：TV311[水利工程—水工结构工程]