| In recent years, especially after the reform and opening up, economic, and culturalhas improved significantly in China, the increase of urban population density, high-risebuildings increased rapidly and people urgent need for underground space, the deepfoundation pit engineering is increasing, the design and the construction become moreand more difficulty. Both to ensure engineering quality, but also as far as possible toreduce the cost of the deep foundation pit support, has become an important issue for adeep foundation pit support designers.With the continuous development of the city urban construction, foundation pitconstruction conditions more complex (geographical restrictions, plumbing, electricpower, communication pipeline and municipal road impact), and affect the surroundingexisting buildings, taking account of these factors, deep foundation pit in Beijing areawith pile anchor retaining, however at present the combined pile anchor supportingresearch was not too mature, the control mechanism and the foundation pit of the degreeis still in the initial stage, so the theoretical research is of great significance to promotethe application of Engineering practice. In view of this, this paper mainly studies theultra deep foundation pit in a common support structure of pile anchor retainingstructure. This article mainly unifies the Beijing a super deep foundation pit engineeringin a typical pile anchor supporting regional expansion, The main work in the thesis:(1) Analysis of the development and selection of foundation pit supporting thestatus in China and common support structure type.(2) Systematic summary of deep foundation pit design theory and calculationmethod used.(3) Based on an foundation pit engineering in Beijing, Using Lizheng software andcorresponding calculation formula to calculate the engineering example of pile anchorretaining structure displacement of pile body, soil pressure, shear and so on, accordingto the calculation results of the corresponding analysis.(4) Combined with practical engineering application of Midas GTS numericalsimulation analysis on the design scheme, the comparison of actual test results analysisthe difference. |
