Abstract
Pile supported wharf is a framed structure which supports the superstructure of RC with a steel pipe pile. Design of pile supported wharf is conducted based on the assumption that load is not transmitted to the framed structure from the earth retaining because it is thought to be advantageous for the seismic performance of the wharf. However, validity of the assumption has not been examined thoroughly thus far. In this study, two dimensional finite element earthquake response analysis modeling pile supported wharf is conducted. As boundary condition between framed structure and earth retaining, both independent condition and fixed condition were considered. The result of the analysis showed that it is not necessarily advantageous to apply the independent boundary condition. It was found that difference between the horizontal and vertical displacement of the wharf and earth retaining greatly affect the advantageous boundary conditions.