强度折减法在丹江口水库二期工程库岸稳定性分析中的应用  

Application of Strength Reduction Method in the Stability Analysis of Danjiangkou Reservoir Bank

作　　者：徐礼华[1] 宋志斌[1] 彭少民[2] 

机构地区：[1]武汉大学土木建筑工程学院,武汉430072 [2]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《武汉理工大学学报》2007年第S2期17-21,共5页Journal of Wuhan University of Technology

摘　　要：通过试验获得丹江口水库库区主要分布的岩石在不同含水状态下的物理力学性能参数,运用强度折减有限元法对该水库库岸进行稳定性分析。结果表明,强度折减有限元法可用于库岸稳定性分析评价,结果可信;水库蓄水位的变化对库岸稳定性的影响明显;在强度折减法中对临界状态进行判定的"结构面塑性区贯通准则"和"特征点的位移突变准则"具有一致性。The physical mechanics parameters of the main rock in the reservoir region in different hydrous states are obtained by tests.Based on the parameters, strength reduction finite element analysis for the stability of the reservoir bank is carried out.The result of the analysis indicates that strength reduction method is feasible in the stability analysis of 3D reservoir bank,and its conclusions is credible;Moreover,the change of the reservoir water level has an obvious effect on the stability of the reservoir bank,and 'the criteria of plastic zone interpenetration' accords with 'the criteria of displacement catastrophe' while judging the criticality in strength reduction theory.

关 键 词：丹江口水库 强度折减法 滑坡稳定性 有限元分析 

分 类 号：TV223.2[水利工程—水工结构工程]