广蓄电站厂房的三维位移反分析

3-dimensional Back-analysis of Displacements for Guangzhou Pumped Power Houses

本文采用参数同步变化法对广蓄电站厂房进行全三维的位移反分析,以确定厂房区的地应力和岩体的材料参数。参数同步变化法基于测点埋设时和测试时的几何组构分别进行地应力场和材料参数同步变化的三维计算,取两次计算的位移差值作为优化目标函数的相关变量,与实测值进行比较。这种方法去除了人为的歧意性,适用于各种复杂的地质条件。

The parameter-covariation method is taken for the 3-dimensional back-analysis of displacements of Guangzhou pumped power houses, in order to determine the initial stresses and the material parameters in site. The 3-dimensional calculation is made corresponding to the different geometric configurations of the measuring point installation and observation with covariant initial stresses and material parameters.The differencs between the displacements of observation points when they are installed and measured is taken as the relative variables of the optimal object function, compariable with the meaaured results This method can eliminate the man-made arbitrariness and be available to the complicated geological conditions.