摘要
锦屏一级水电站上游围堰采用复合土工膜斜墙加塑性混凝土防渗墙防渗.通过土石坝专用分析软件SEDNA,对上游围堰典型断面进行应力变形平面有限元数值分析,研究堰体和防渗墙的应力、应变特性,以及土工膜的位移和应变,结果表明,堰体和防渗墙的强度、变形及土工膜的伸长率均符合设计要求,整个围堰处于稳定安全状态.
An anti-seepage wall with composite geomembrane incline core and plastic concrete is adopted to prevent the water from seeping in the upstream cofferdam of Jinping first stage hydropower station. The finite element numerical analysis of the stress and deformation is conducted for the typical section of upstream cofferdam with a special analysis software SEDNA of embankment dam. The stress-strain behavior of the weir body and anti-seepage wall, displacement and strain of geomembrane are studied. The result indicates that the strength of the weir body and anti-seepage wall, the deformation and the elongation of geomembrane conform to the design requirement,i, e. the cofferdam is in a steady and safety state.
出处
《南昌工程学院学报》
CAS
2008年第6期55-58,共4页
Journal of Nanchang Institute of Technology
关键词
塑性混凝土
三轴试验
有限元分析
安全评价
plastic concrete
triaxial test
finite element analysis
security evaluation
