2010•Journal of Highway and Transportation Research and DevelopmentRequires access
Study on Load Transfer Regularity of Soil-cement Pile Composite Foundation under Embankment
Chen Guo-xing
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Abstract
In consideration of deformation characteristics of soil-cement pile composite foundation under embankment,based on the supposed vertical settlement mode of the soil between piles and the elastic mechanics principle,the analytical formulas of the vertical stress of the pile and the friction of the pile side were derived.Theoretical analysis and FEM calculation results indicate that(1) the neutral point of the pile in composite foundation under embankment is produced,the negative friction of the pile side is also produced above the neutral point;(2) the positive and the negative frictions of the pile side and the vertical stress of the pile increase with increment of the modulus of the pile and reduction of the modulus of the soil between piles,and they increase with increment of the load at the top of the pile.Theoretical results agree with FEM calculation results.The analytical formulas could be used for engineering reference.