Deep Excavation Pile Anchor Support Design And Numerical Simulation

In recent decades, our country’s economy has been rapid development, has becomethe inevitable trend of urbanization in our country, urban land relative tension.Apparently foundation pit engineering is restricted by the surrounding environment tofurther upgrade, and environment on the deformation control requirements are morestrict. The pile anchor supporting structure has smaller requirements to the constructionspace, and can effectively control the deformation, therefore in the process ofexcavation and supporting of foundation pit has been widely used. Based on afoundation pit engineering handan city as an example, this paper in detail introduces thedesign theory and the pile anchor supporting earth pressure calculation theory, on thebasis of the theoretical calculation and stability analysis of the foundation pit, and usethe MAIDAS/GTS software, a numerical simulation of the excavation and supporting offoundation pit excavation are analyzed in detail and the displacement of the pile bodyby changing the pile spacing, the displacement of the retaining pile and soil underdifferent spacing.The main research content is as follows:(1) the research background, significance and the domestic and foreign researchsituation of the deep foundation pit are discussed, then introduced this topic researchcontent and methods;(2) introduced the work mechanism and deformation characteristics of the pileanchor supporting, etc., and then the pile anchor supporting the design and calculationmethod, and combined with project example, the use of reason is analysis software tocalculate the engineering including supporting pile bending moment and displacement,shear force, such as calculation results, based on the results of analysis on the basis ofthe existing theory and knowledge. The next step of actual engineering feasibilitySuggestions;(3) of MIDAS/GTS do first expounds briefly including process, main analysisfunction, etc. Subsequently, a deep foundation pit using MIDAS/GTS to handan citymodel is established, using MIDAS MIDAS/GTS to numerical simulation of the actualproject from the stress and deformation of soil and pile shaft deformation, axial force ofbolt, etc is analyzed, and through the pile spacing and more supporting of deep foundation pile anchor support design has carried on the comparison and analysis.Based on practical engineering and the principle is the software calculation, anduse of MIDAS/GTS do numerical simulation to the following conclusion: MIDAS/GTScan be used for the pile anchor supporting structure analysis of the numerical simulation,and MIDAS/GTS do the pile anchor supporting can be adopted by the results ofnumerical simulation.