Artificial Dig The Pile With An Independent Foundation Bearing Capacity On The Comparative Analysis And Research

The various of buildings' bearing loading will deliver to the foundation by the foundation. The ultimate bearing capacity of foundation are closely related with the safety and economies of the building, especially to the building that bears declining loading and of the important engineering. If the each kind of building adopts the different foundation pattern, size and covering-up depth or places under in the different foundation soil quality circumstance, the ultimate bearing capacity may differ from each other extremely. Therefore, the things that researching the ultimate bearing capacity of foundation of the different foundation forms and finding out the reasons that why the ultimate bearing capacity of the different foundations differ from others are already becoming a significant forward position research topic confronted by our country even the whole world in the geotechnical engineering fields.Methods such as scene monitoring, theoretical analysis, numerical simulation of FEM analysis software ANSYS and so forth are wielded synthetically in the paper, coupling the research projects of "The deep plate loading test of piles in one area of Changsha in Hunan" tightly. According to the actual conditions of the artificial excavate pile in this area, supposing an independent foundation which is in the same condition, taking a research based on the test, and take this as basis, using Terzaghi theory and Meyerhof theory to calculate the foundation bearing capacity of independent foundation and artificial excavate pile, then analyse the calculation result. According to the weakness of Terzaghi theory and Meyerhof theory including just considering the whole shear-gliding broken, the improvement about the foundation bearing capacity theory is also carried out. Making numerical simulatio about the independent foundation and the artificial excavate pile with FEM analysis software ANSYS, combining with the analysis of the foundation broken pattern and bearing capacity, and the reason is put forward that the artificial excavate pile foundation bearing capacity is stronger than the one of independent foundation on a larger covering-up depth. Combining with the actual conditions of the artificial excavate pile in this area, basing on the deep plate loading test and all the parameter of the artificial excavate pile, suppose an independent foundation, the research center that ultimate bearing capacity of the two foundations are great different on a big depth is put forward.The caculation of independent foundation and artificial excavate pile foundation bearing capacity with Terzaghi theory and Meyerhof theory is help to finish the comparison between caculation result and plate loading test, the theory caculation method is getting the first step improvement.The method of FEM numerical simulatio based on the plate loading test and the theory caculation is put forward, and take the method as base to build foundation bearing models of the two foundations, analyse the foundation broken pattern and make a comparison with the one in actual engineering,the conclusion is obtained successfully.The research outcomes get the verification by the plate loading test, caculation and numerical simulatio, and have the conclusion that the artificial excavate pile foundation bearing capacity is stronger than the one of independent foundation.