Numerical Simulation Study On Pile Deep Foundation Pit With Pile-Anchor Support

In recent decades, with the increase of the high-rise building and the development of underground space, deep foundation pit engineering in increasing of quantity, scale expands unceasingly. The foundation to the influence of the surrounding environment for people place more attention, especially in regard to the population, crowded buildings, underground pipelines for various large cities. Therefore, how to the rational support means, to control deformation of foundation pit settlement, such as the top and the bottom of lateral displacement of the pit wall uplift and so on, is particularly important.A large number of engineering examples show that multi-layer pre-stress anchor and protecting piles of combination support of way, with other supporting measures incomparable advantages, ensure the surrounding buildings and underground pipes.In this paper a deep foundation pit Beijing pile anchor bracing engineering, mainly to the deep foundation pit deformation principle, deformation law to make research, using finite difference FLAC3D software, the deep foundation pit excavation and supporting process simulation calculation, and finally the numerical analysis results, especially analyzes the pre-stress anchor in the control of the role of displacement of foundation pit. Analysis results, on the one hand, multilayer priestesses anchor add protecting piles of support scheme, can effectively control the foundation pit deformation; On the other hand, FLAC3D finite difference that software can be of foundation pit excavation and supporting process simulation analysis in advance, summarized the deformation law, for the following specific construction provides reference for the design.