The Analysis And Design Research Of Global Performs For Row Piles Supporting Foundation Pit

As a common form of deep foundation pit support, Row pile supportingstructure is widely used in Nanchang area. But there are still some deficienciesshortcomings in the design and calculation of the structure at present. The selectionsof some design parameters are lack of reasonable basis, on which the value ofparameters is prudent and arbitrarily taken by experience. So that it causesunnecessary waste or hazard on the project. Therefore, further study is necessary.This paper summarizes and analyses the calculation method for the internalforces of the row piles systematically. Based on the foundation pit supporting projectof a commercial apartment building in Nanchang area, Lizheng6.0software adoptdesign calculations to unit structure and overall structure on the project with analysisof deformation and stress of the foundation pit and supporting structure, the paperconducts a comparative of the calculation results with RSD3.0software. By MidasGTS4.0software, this paper makes three-dimensional numerical simulation analysisfor foundation pit and row pile supports structure, and discusses the law of changes instress and distance. The paper also compare the calculation results from lizheng6.0software and Midas GTS4.0software with the practically observed data ofdeformation, we get some valuable laws and conclusions. In addition, by a singlevariable method, the degree of influence of the supporting pile design parameters andsoil parameters on the pit deformation is discussed. The reasonable pile diameter, thepile effective embedded depth, the degree of influence of three soilparameters(modulus of elasticity、 cohesion and internal friction angle) for pitdeformation and the effective range of cohesion and internal friction angle areproposed, which can provide a reference guide for the design and construction ofsimilar projects in the future.