Abstract:Based on soil arching effect and Mohr-Coulomb yield criterion, a calculation model of soil arching between piles was built. The calculation formula for soil resistance on cantilever pipe pile was obtained. Considering the pile soil compaction effect and depth effect and by means of Vesic cavity expansion theory, the relationship between horizontal bearing behaviors and horizontal displacement was derived. And using the force and moment equilibrium conditions, the design technique for supporting structure of cantilever pipe piles was established. The calculation results of the test, the measured results and Rankine soil pressure results were compared and analyzed to verify the feasibility of the theory formula. The research results indicated that there was a small gap between the proposed calculation results and the measured results and the variation tendency of soil resistance around pipe pile was consistent. Moreover, the computational accuracy of the proposed method was remarkably improved when comparing with Rankine earth theory.