降雨对公路边坡稳定性影响的有限元分析

从作用机理来看,基于降雨引发的边坡失稳灾害是一个相当复杂的过程,特别是严重影响边坡稳定性的两大因素。降雨强度与降雨历时,针对江苏盐通高速公路的黏土边坡的工程特性和降雨特点提出了四种不同的计算方案。基于有限元方法对四大方案的抗滑系数进行计算,并进行了分析评价,认为连续阴雨天(其特点为降雨强度小、但降雨时间长)相对于暴雨(其特点为降雨强度大、降雨时间短)对黏土边坡稳定性的影响更大,更具有危害性,容易形成灾害。研究能够为今后的黏土边坡的滑坡、塌方以及高速公路边坡稳定性计算具有一定的指导意义。

Finite Element Analysis of the Impact of Rainfall on the Road Slope Stability

The role of mechanism from the point of view, based on rainfall-induced slope instability hazards is a very complex process, in particular, seriously affect the slope stability of two factors: rainfall intensity and duration of rainfall, this paper, Jiangsu salt Expresswaythe engineering properties of the clay slope and rainfall characteristics of four different calculation scheme, the sliding coefficient of the four programs is calculated based on the finite element method and the analysis and evaluation, that the consecutive rainy days (which is characterized by a rainfall intensitysmall, but the rainfall for a long time) relative to the rainstorm (which is characterized by heavy rainfall, the short rains) and a greater impact on the clay slope stability, more hazardous, easy to form a disaster, I hope this study for the future of claythe slope of the landslide, landslides and highway slope stability calculation has certain guiding significance.