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.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2004年第5期50-53,共4页
Engineering Journal of Wuhan University
关键词
拱坝
有限元法
加固方案
仿真分析
安全评价
arch dam
finite element method
reinforcement scheme
simulation analysis
safety evaluation
