基于可视化编程的混凝土重力坝深层抗滑稳定分析及影响因素探讨

由于坝基很少是完整的岩体,常常有若干条节理、裂隙或断层将坝基岩体切割成块,并形成连续的滑动通道。因此,对混凝土重力坝进行抗滑稳定计算就显得尤为重要。文章借助于VB计算机语言,编写了基于刚体极限平衡法的重力坝深层抗滑稳定计算可视化程序。运用该程序对混凝土重力坝工程挡水坝段进行了计算分析,得出坝基深层抗滑稳定安全系数。并运用ANSYS有限元分析软件进行有限元计算,将二者结果进行对比分析,来验证所编程序的可靠性。最后对影响坝基抗滑稳定因素进行敏感性分析,提出坝基加固措施。

Discussion on stability against deep sliding and influence factors analysis of concrete gravity dam based on visual programming

In a practical project,the dam rock foundation is rarely intact,there are often a number of joints,fissures or faults that cut the dam bedrock into blocks and form a continuous sliding channel.Therefore,it is very important to calculate the sliding stability of concrete gravity dam.This paper by the aid of VB computer language prepares the visual program based on the method of rigid body limit equilibrium for calculation of the stability of gravity dam against deep sliding.By use of this program,the water retaining section of concrete gravity dam is calculated and analyzed,and the safety factor of dam foundation stability against deep sliding is got,and the finite element analysis software ANSYS is used for calculation and the results of the two calculations are compared so as to verify the reliability of the program.Finally,through sensitivity analysis of the factors affecting the dam foundation stability against sliding,this paper proposes the measures to strengthen dam foundation.