长沙坝水库大坝加固方案有限元分析及安全评价  

Finite element analysis of reinforcement scheme of Changsha dam and its safety evaluation

作　　者：冯道雨 傅少君[2] 彭成佳[2] 陈胜宏[2] 

机构地区：[1]中国水利水电建设集团公司,北京100761 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2004年第5期50-53,共4页Engineering Journal of Wuhan University

摘　　要：针对长沙浆砌石拱坝运行多年后出现严重裂缝和不对称变形现象,提出了大坝加固方案,并采用三维有限元方法,全过程模拟了坝体施工过程,并分时段模拟了地基应力、坝体自重应力和水沙荷载的分级加载,分析了加固后坝体应力应变分布规律,对大坝加固方案的可行性和合理性作出评价,为工程设计提供依据和建议.The serious cracks and asymmetric deformation have appeared in Changsha Masonry Arch Dam after it has operated for more than 30 years. In this paper, a reinforcement scheme for the dam is proposed. The construction process are emulated completely and the foundation stress, deadweight of dam, water and soil load are also emulated by using 3-D FEM. The distribution characteristics of stress and deformation of the reinforced dam are analyzed. According to the analysis, the feasibility and rationality of the reinforcement scheme is justified, some proposals for design and construction are put forward too.

关 键 词：拱坝 有限元法 加固方案 仿真分析 安全评价 

分 类 号：TV314[水利工程—水工结构工程]