Study On Bearing Behavior Of Composite Foundation Of Compacted Cement-soil Pile

With the accelerating urbanization, industrial and civil construction, rail andhighway construction is growing demand for the area of building land, Many of theengineering projects have to be built on the weak foundation soil. The compositefoundation of compacted cement-soil pile is a new technology for dealing with theweak foundation soil witch mainly consists of silt and silty clay soil. Because ofless investment and rapid construction speed, it has been widely used in NorthChina area.With the increasing of the practical engineering applications for the technologyof the composite foundation of compacted cement-soil pile, a lot of technicalproblems and defects have been exposed, so it requires more research for thetechnology of the composite foundation of compacted cement-soil pile. to adapt tothe actual development and to serve for engineering applications better.The computer technology increasing rapidly in recent years, many scholarsbegin using the finite element software for model analysis of the compositefoundation of compacted cement-soil pile. But when I have read a lot of literatures,I find that many models are based on plane strain theory, there are many problemsin the model assumptions and buildings, and less for researching the group piles. Soi think it is necessary to research more for the composite foundation of compactedcement-soil pile.This thesis made a presentation on the concept of the composite foundation ofcompacted cement-soil pile and summed up the mechanism of action and method ofcalculation witch researched by domestic and foreign scholars. Also used theABAQUS finite element software to build single pile and group pile models onstuding the bearing behavior of the composite foundation of compacted cement-soilpile Respectively transforming the length of pile,the diameter of pile, areareplacement ratio, the parameters of the foundation soil, the parameters of cushionand the number of the composite foundation of compacted cement-soil pile toresearch the law of change for the bearing behavior of the composite foundation ofcompacted cement-soil pile. And comparing the analysis results of the single pilecomposite foundation model with an actual engineering of the load test results.