坝基岩体物理力学参数垂直分布与建基面选择  

Vertical Distribution of Mechanics Parameters of Dam Foundation and Selection of Its Bearingsurface

作　　者：丁向东[1] 吴继敏[1] 黄建华[2] 唐新华[2] 邢兰英[2] 

机构地区：[1]河海大学土木工程学院,南京市210098 [2]福建省水利水电勘测设计研究院,福州市350001

出　　处：《勘察科学技术》2006年第3期3-6,14,共5页Site Investigation Science and Technology

摘　　要：大坝建基面的确定主要是根据规范和经验及已有工程的对比,从安全和经济角度出发,仍有潜力可挖,目前在工程中广泛应用的有限元分析方法由于未能考虑岩体不同深度的物理力学参数的变化,在建基面的确定中起不到应有的作用。该文对一些已建工程和在建工程的物理力学参数进行统计和相关分析,得出了同一风化层内和不同风化层之间的参数变化规律,并结合福建某水电站的坝基岩体进行计算,验证了参数垂直分布研究的必要性和重要性。At present, the determination of bearing, surface based on criterion and experience and comparison with existing work, is deficient and inaccuracy; due to not considering the variety of mechanics parameters, the FEM analysis method widely used in engineering, does not exert its effect. In the paper, with statistic and relativity analysis to the mechanics parameters in some constructed and constructing building work, the change rule of mechanics parameters in a weathered zone or between different weathered zones is obtained; and based on calculation of a water-power engineering project in Fujian, the importance and necessity of research to vertical distribution of mechanics parameters is proved.

关 键 词：参数 垂直分带 相关性分析 有限元 

分 类 号：TV223.3[水利工程—水工结构工程]