土钉支护结构整体稳定性的动态分析  

Dynamic analysis of the whole stability of soil-nail bracing

作　　者：胡长明[1] 李文广[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《西安建筑科技大学学报（自然科学版）》2005年第1期78-81,117,共5页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：陕西省教育厅专项科研基金项目(03JK137)

摘　　要：用非饱和土强度理论建立了土钉支护整体稳定性最小安全系数的公式.运用非饱和土水分子运动方程,求解降雨入渗条件下边坡土体的瞬态体积含水量,又考虑到其与非饱和土抗剪强度的关系,分析了降雨入渗条件下非饱和土土钉支护边坡整体动态稳定性.用MATLAB计算机语言实现了遗传算法寻找非饱和土土钉支护结构最危险滑裂面和与其对应的最小安全系数的自动寻优.The unsaturated soil water movement formula is adopted for calculating the transient water content within the slope. With equilibrium method the dynamic stability of soil-nail bracing of unsaturated soil slope is analyzed, considering the connection between the shear strength of unsaturated soil and water content. Genetic algorithm is introduced for searching the critical slip of soil-nail bracing and the corresponding minimum factor of safety in the unsaturated soil. The optimal course is automatically implemented with MATLAB.

关 键 词：非饱和土强度 降雨入渗 边坡动态稳定性 

分 类 号：TU432[建筑科学—岩土工程]