抄録
This paper describes an experimental results for effect of wall flexibility on the dynamic earth pressure for cantilevered retaining wall. Three centrifuge tests were performed on reduced models with different flexibility. The retaining walls were fixed on the container to clear boundary condition except wall flexibility. This condition was far from assumption of limit state analysis, which allow sufficient yield displacement in the backfill soil such as Mononobe-Okabe method, but this paper focused on the change of dynamic earth pressure with wall flexibility. The phase difference between wall and soil reduced the dynamic earth pressure and dynamic moment has a same phase with wall inertia for flexible retaining wall. Position of dynamic thrust is H/3 for ordinary retaining wall and upper bound is 0.5H. Seed and Whitman method overestimate the dynamic thrust when surface PGA was used as a kh, and using wall base PGA as a kh agrees with Seed and Whitman estimation.
