摘要
以某降雨发生蠕变的红粘土边坡为研究对象,通过快剪试验获取土体的抗剪强度指标,并结合实际情况建立相关计算模型,运用剩余推力法对所选的抗剪强度指标进行反算分析。考虑到土体滑坡面的均质和非均质情况,分别采用整体和分段反算的方法进行计算,结果表明与室内快剪试验所得到的抗剪强度指标是一致的;再者,由于红粘土边坡自身所具有的特性,降雨对于滑坡面模型的建立及边坡的破坏形式有着重要的影响,因此选择浅表层破坏作为该红粘土边坡的计算模型。
This paper presents the results of a creeped red clay slope triggered by the rainfall.The soil parameters were determined by the fast shear testing.The soil slope was back analyzed by the residual thrust method.Slope with both global shear failure plane and segmented shear plane were considered since the slope might be homogeneous and heterogeneous.The back analysis results indicate that shear strength parameters obtained by the fast shear testing are appropriate.Further,due to the characteristics of the red clay slopes,the precipitation has an important impact on the development of the shear plane.The shallow failure mode is then developed and it is proved this mode is reasonable.
出处
《土工基础》
2015年第4期69-72,共4页
Soil Engineering and Foundation
关键词
红粘土
边坡
蠕变
抗剪强度指标
反算分析
计算模型
Red Clay Soils
Soil Slopes
Creep Deformation
Shearing Strength Parameters
Back Analysis
Analytical Model
