Study On Optimization Of CFG Pile Treatment In Soft Ground Of Xing-heng Expressway

Cement and fly ash rubble pile and the soil between piles composite foundationformed through the cushion, which can effectively improve the bearing capacity of softsoil, and reduce the subgrade settlement, the technology has a good application in theSoft Foundation Treatment prospects. At present, due to lack of CFG pile embankmenton soft ground CFG pile design standards and specifications, highway engineeringdesign and construction of multi-building foundation engineering experience, the designis reasonable needs to be improved. The problems for the project and specific highwayproject, Xing Heng, CFG pile Treatment at Bridge software based optimization system.Investigation and analysis sections of works at home and abroad ExpresswayBridge Treatment Schemes for instance, to determine the disease type of the softfoundation of bridgehead section, and the causes and mechanism of disease in-depthanalysis, Xing Heng specific highway project, to determine the subgrade quality controlkey sections.Computational theory, through in-depth analysis of embankment settlement usingfinite element software, subgrade settlement deformation control model. According tothe conditions of the punishment value for highway projects, the typical roadbed sectionsubgrade settlement observation to determine the settlement observation locations andmethods of observation; different sections of the construction and post constructionsettlement estimates for the full range of engineering geological conditions, and for takeengineering measures roadbed subsidence that may occur is analyzed and calculated toprovide the basis for sedimentation control measures perfect.Xing Heng Expressway Bridge soft base section CFG Pile Treatment program forsystem analysis, study the embankment cross-sectional direction of deposition variation,and calculate the carrying capacity of the analysis of different pile spacing under theconditions of cement and fly ash gravel pile composite foundation on this basisdetermine the reasonable arrangement of the cement and fly ash rubble pile spacing andpile length program.According to the results of theoretical analysis, to evaluate the rationality of theXing Heng Expressway Bridge soft ground section CFG Treatment program, focusingon the layout of CFG pile, pile length settings, the proposed scheme the optimizationmethod. According to Xing Heng highway optimization, analysis of CFG pile spacing,pile length changes in the program of economic rationality.