摘要
以毛坦水电站的砌石拱坝为例,通过对大坝水平位移观测资料进行定性和定量分析,得出了大坝坝体位移变化符合拱坝的一般变形规律,大坝变形整体协调性好。采用拱冠梁法和三维有限元法对毛坦水电站大坝的结构性态进行了计算分析,并在此基础上,对大坝的安全性态进行了综合分析和评价:大坝砌体主应力在各种工况下主压应力均满足规范要求,主拉应力基本满足规范要求。该方法可供其他拱坝的安全鉴定工作参考。
Taking the masonry arch of Maotan Hydropower as an example, its horizontal displace ment observations both qualitatively and quantitatively are analyzed. As a result, the displace- ment accords with the general deformation, which reflects that the dam deformation is of good o- verall coordination. Then crown cantilever method and 3D FEM are used to calculate and analyze Maotan Dam＇s structure, which becomes the foundation of comprehensive analysis and evaluation for the dam＇s security. The dam＇s principal masonry stress meets regulatory requirements under all possible working conditions including main compressive stress and tensile stress. This ap proach can be referred among other arch dams＂ security evaluation.
出处
《长江工程职业技术学院学报》
CAS
2013年第3期8-12,共5页
Journal of Changjiang Institute of Technology
