挡墙加固非饱和土边坡整体稳定性分析  

Stability analysis of unsaturated soil slopes reinforced with retaining wall

作　　者：李荣建[1] 于玉贞[1] 邓丽军[1] 李广信[1] 

机构地区：[1]清华大学水沙科学与水利水电工程国家重点实验室(筹)/水利水电工程系,北京100084

出　　处：《岩土力学》2006年第S2期905-908,共4页Rock and Soil Mechanics

摘　　要：在对挡墙加固边坡进行设计和评价时应综合考虑基质吸力和挡墙对边坡整体稳定性的影响。应用可以考虑基质吸力的弹塑性强度折减有限元程序,分析了挡墙加固非饱和土边坡的整体稳定性,揭示了基质吸力对加固边坡整体稳定性的影响程度,同时亦分析了整体潜在滑动面位置的变化情况,并进行了关于吸力摩擦角的敏感性分析。The retaining wall commonly existing in slope engineering,the effects of matric suction and retaining wall are important in the design and safety evaluation of the reinforced slopes.In order to decrease the occurrence of failure it is essential to properly evaluate the global stability of unsaturated soil slope reinforced with retaining wall.By using the strength reduction finite element program to implement considering matric suction,the global stability of reinforced slope is analyzed;and the computational results reveal the contribution of matric suction and indicate the variation trend of global potential sliding surface.Sensitivity analysis of suction friction angle is also presented.

关 键 词：非饱和土 基质吸力 边坡 挡墙 强度折减有限元法 

分 类 号：TU43[建筑科学—岩土工程]