A partially coupled effective stress analysis is assessed in predicting seismic performance of caisson-type quay wall. Using a nonlinear finite difference program, a numerical study of shaking table tests, carried out at Tokyo University, is performed. In this paper, the formulation of employed computational code is described and the results of numerical simulation are compared to the measured records. The results demonstrate that the trend and magnitude of vertical and horizontal displacement of quay wall appears to be predicted reasonably well. The overall tendency is to overpredict the horizontal movement but the vertical movement is underpredicted.
The nonlinear dynamic response of jacket-type offshore platform (which has been installed in Persian Gulf) under simultaneously wave and earthquake loads is conducted. The interaction between soil and piles is modeled by Konagai-Nogami model. The structure is modeled by finite element method. The analyses include models with the longitudinal component of earthquake and wave in the same direction and in different directions. The results indicate that when the longitudinal component of earthquake and wave are in the same direction, wave may reduce the response of studied platform and when they are in different directions, in some cases there is an increase in the response of platform.
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