A NUMERICAL SIMULATION OF OPEN-TYPE WHARVES ON VERTICAL PILES BY THE TWO-DIMENTIONAL EFFCTIVE STRESS ANALYSIS CONSIDERING LOCAL BUCKLING

Abstract

 To simulate the local buckling of steel pipe piles on damaged open-type wharves, we revised model parameters in the two-dimensional effective stress analysis as follows : 1) The appropriate modeling of shear strength of soil around the piles; 2) Using the real yield strength of steel pipe piles, not a standard value. However, using the bi-linear beam element for piles with coarse element division, it was difficult to grasp the detailed local buckling position and residual strength. In this paper, the M-φ relationships of steel pipe piles in consideration of the local buckling are obtained by three-dimensional FEM analysis using shell elements. It has been found that the accuracy of the numerical simulation is improved by the proposed M-φ relationships.