Factors Analysis About Long-short-pile Handling With Mountain Highway Soil Foundation

Chinese economy is now on rapid development， people required more ininfrastructure,especially for highway requirements. In highway construction, we canhardly avoid of soft soil permafrost and so on. Because of the special distribution of softsoil foundation in the mountain highway and complex and diverse characteristics of softsoil, we would meet with large of problems when we handle with it. Therefore, thestudy of mountain highway soft soil characteristics and treatment method has becomean important issue.Relying on science and technology projects in Guizhou Province CommunicationsDepartment----Guizhou Mountainous Expressway Soft Foundation Treatment of keytechnology research and demonstration projects, I collect data for analysis in this paper.Starting from the introduction of soft soil characteristics, I highlight the characteristicsof soft soil and mountainous Guizhou existing soft soil foundation treatment. For softsoil mountainous Guizhou, this paper choose the length of the pile compositefoundation approach to deal with its Soft.In this paper, I do a detailed analysis in the length of the pile composite foundation.I search the long pile bearing capacity in two different perspectives, so do thesettlement.With the help of finite element software PLAXIS, I do detailed analysis about thefactors affecting the length of one composite pile foundation stability and finally reachthe following conclusions1.The length change of CFG has great impaction on Greater impact on CFG pilecomposite foundation.CFG length can effectively control the settlement of compositefoundation.2.The length change of cement mixing pile has little effect on CFG pile compositefoundation. But it really confirms certain capacity. So the cement mixing pile is stillnecessary.3.The change of pile spacing will affect the additional stress of the pile.4.When cushion thickness increases in some range, the stress of CFG pile willreduce.In summary, this paper does detailed analysis on factors affecting the length of the pile in dealing with Soft mountain highway. It really does great help in dealing withhighway in mountains, does a good example for work.