多维图解反算法确定膨胀土滑坡土体的抗剪强度指标.pdf

第 23 卷第 12 期岩石力学与工程学报 23(12):???~???
2004 年 6 月 Chinese Journal of Rock Mechanics and Engineering June,2004



多维图解反算法确定膨胀土滑坡土体的
抗剪强度指标

李凡 1 孙四平 2
(1 河海大学岩土工程研究所南京 210098) (2 同济大学道路与交通工程教育部重点试验室上海 200092)

摘要由于膨胀土滑坡土体的特殊力学性质和滑动时受到扰动,滑坡体稳分析中的重要指标,抗剪强度很难用一
般试验方法确定。介绍的多维图解反算法,可以准确方便地确定膨胀土地区滑坡土体的抗剪强度指标。
关键词膨胀土,滑坡体稳定分析,抗剪强度,极限平衡,多维图解反算法
分类号 TU 457 文献标识码 A 文章编号 1000-6915(2004)12-0000-00

CALCULATING SHEAR STRENGTH OF LANDSLIDE IN EXPANSIVE SOIL
REGION BY DIMENSION CHART BACK CALCULATION METHOD

Li Fan1,Sun Siping2
(1Geotechnical Engineering Institute,Hohai University, Nanjing 210098 China)
(2Education Ministry Key Laboratory of Road and Traffic Engineering,Tongji University, Shanghai 200092 China)

Abstract For special mechanical characteristics of expansive soil, . cycling swell and shrinkage, crack, over
consolidation and disturbance of sliding,soil structure of slide is destroyed,and so it is hard to obtain the soil shear
strength parameters by general indoor shear experiment. Shear strength of soil is important in the stability analysis
of slide. The method of back calculation through dimension chart is given,which can calculate soil shear strength
of slide in expansive soil region more accurately and credibly.
Key words expansive soil,stability analysis of landslide,shear strength,limit equilibrium,back calculati