摘要
以断裂力学理论为基础,运用有限单元法对混凝土重力坝采用预应力技术进行了研究,揭示出预应力可有效抑制坝踵裂缝的扩展,大大地提高了重力坝的安全度;并且指出预应力的最优数值和位置,对于在重力坝上推广预应力技术有一定的参考价值.
By analysing destroyed causation of the Concrete Gravity Dam, on the basis of the fracture mechanics, the effect of the prestressed value and place to the dam heel stress intensity factor of the Concrete Gravity Dam by the finite element method is studied and the optimum measure is found for prestress to be loaded. There is some certain reference to the gravity dam applying prestressed technique.
出处
《华北水利水电学院学报》
2005年第1期19-22,共4页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
预应力
混凝土重力坝
断裂力学
应力强度因子
prestress
concrete gravity dam
fracture mechanics
stress intensity factor
