The stress and deformation mechanism of double-row piles retaining system is very complex because of the existing of soil between the two rows of piles.However

the commonly used calculation models for double-row piles system in current technical specifications and practice are sometimes unreasonable for they often equalize the soil between the piles to a horizontal structural member.A modified calculation model for double-row piles supporting structure was presented in this paper by introducing the equivalent truss model and taking the soil between the two rows of piles as a plane truss structure.Then

a computer code package based on the proposed calculation model was compiled using MATLAB.Next

the computer code package was applied in analyzing a typical case.The rationality and feasibility of the presented calculation model were verified.The result shows that the proposed calculation model is more accurate and rational by considering the shear deformation effect of soil between piles and pile-soil interface friction after introducing the equivalent truss model.