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In this paper, the embankment (with caps ) - soil as a part of the overall analysis , improved transfer function of the traditional method , the establishment of the pile - spring - a simplified model of soil - pile . Pile equation to solve the matrix displacement method were established , soil equation , expression of the interaction between the two spring equation to solve simultaneous equations using an iterative algorithm couplet . The method takes into account the non-linear load transfer function between the hierarchical nature of the foundation soil and pile soil , you can easily get the load sharing ratio , the location of the neutral point , the pile-soil settlement and axial force and pile side friction distribution . Obtained method , this paper carried out a large number of parameters analysis . Reveals pile length , pile diameter shaft modulus , lateral soil modulus , lateral friction , the ultimate tip resistance parameters of the settlement, Shen surface height , load sharing than the neutral point position , axial force and pile lateral friction distribution were investigated . This paper uses differential method to calculate the degree of consolidation of layered soils under variable load , and then combined with the improved transfer function method to analyze the impact of the consolidation of the embankment piles . Rigid foundation set cushion rigid pile composite foundation under embankment load pile composite foundation has some common features . Pile upper withstand negative skin friction ; embankment and cushion has a regulatory role , when the load is not at the same time , the pile soil load sharing ratio is different . They also have a number of different places , embankment load close to the flexible load load acting on a rigid foundation ; embankment piercing pile up enough space , the thickness of the cushion is very limited . In this paper, using the method similar with cap embankment pile , rigid pile composite foundation with cushion under different load levels , pile length , pile spacing , thickness of cushion , cushion modulus , modulus of soil between piles and pile end limit resistance to change on the settlement of the pile -sharing ratio , the location of the neutral point , axial force and pile friction distribution impact of computational analysis .
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