多级边坡开挖与锚固的影响范围数值模拟
梁华友;周海清;周淑玲;苏杭
【期刊名称】《后勤工程学院学报》 【年(卷),期】2016(032)005
【摘要】FLAC3D is adopted to perform numerical simulations for the construction process of geotechnical multi?level slope, aiming at exploring the relaxation zone caused by slope during excavation and precompression zone caused by the anchor during an?choring, as well as the mechanism of action on the interaction of both zones. The results show that the slope deformation range caused by slope during excavation and anchoring is roughly circular shape. When pre?stressed anchorage operation happens, within a certain range, slope precompression zone increases with the increase of pre?stress. While pre?stress increases to a certain degree, the boundary of slope preloading area will extend slightly. Pre?stressing can effectively reduce the relaxation zone caused by the low?er slope excavation, therefore, the construction of high slope should follow the principle of reverse construction method, making rein?forcement while excavating, and make control of the excavated volume every time. The slope precompression zone caused by pre?stressed anchorage operation has a very similar shape with the relaxation zone caused by the side during excavation, which means that adding pre?stress can effectively restore
多级边坡开挖与锚固的影响范围数值模拟
