Abstract：Based on the assumption of strain compatibility，pile-soil ground is homogenized. Combined with transversely isotropic constitutive equations，the elastic modulus and Poisson¢s ratio of composite ground are gained. Compared with the results of finite element method，the results of this method are validated. In the end，the influences of piles on rebound and deformation of a large deep foundation pit are analyzed. According to the comparisons of measured results and calculated ones，the applicability and predominance of the method are validated；and the workload and calculation time will be simplified and saved.
