高填方路堤施工期沉降变形的FLAC模拟

FLAC simulation of settlements and deformation of high embankment in construction period

针对高填方路堤沉降大的问题,采用FLAC对高路堤施工期的竖向沉降变形进行模拟。验证了分级加载作用下高路堤中间大、两边小的沉降规律,分析了影响高路堤沉降的主要因素,结果表明,路堤沉降量随高度和路堤土密度的增加而增大,随弹性模量、泊松比和压实度的增大而减小。

According to the problem that high embankment has a large settlement, the simulation of settlements and deformation of high embankment in construction period is carried out by using FLAC. The settlement regularities under the step load that broad in the middle and narrowing toward each other are verified. The main factors affecting the high embankment settlement are analysed, the results show that the settlement is increased with the increment of height and embankment density and decreased with the increment of elastic modulus, poisson＇s ratio and compactness.