万州五桥机场高填方路堤沉降的有限元分析

针对万州五桥机场高填方路堤进行有限元沉降计算和分析.利用大型有限元程序ANSYS,结合万州机场高填方路堤填筑顺序,模拟观测点在自重和上部土层填筑后的位移变化情况,即沉降量与填筑高度之间的变化关系,并与实测结果进行了进一步的对比分析.研究表明,自重应力作用下高填方路堤的变形主要集中在填筑层,最大位移发生在路堤顶部边缘处或其附近;除去自身瞬时沉降后的有限元计算结果比实测值略小,其规律性更强,是对实测结果有益的补充.

Finite Element Analysis on High Embankment of Wanzhou Wuqiao Airport

Finite element analysis was carried out on high embankment of Wanzhou Wuqiao Airport. By means of commercial FEM software ANSYS, combined with the filling sequence of the embankment, the changes of the displacements of the observation points affected by own weight of the filling layers and loadings on the top were simulated. The relationship between the settlement and the filling height was achieved, and more comparative analysis was carried on the results of FEM and observation. The research indicates that the deformation of high embankment mainly occurs in the filling layers under self - weight stress, but not in the bedrock. The maximum displacement is near the top edge of the high embankment. The settlements affected only by the upper loadings calculated by FEM are smaller than the observation values, but they are more regular. FEM calculation is a helpful complementarity for the observation results.