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《Earthquake Engineering and Engineering Vibration》 2002-03
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Computational analysis of dynamic homogeneous soil-pile-structure interaction

CHEN Bo, L Xi lin, LI Pei zhen, CHEN Yue qing (State Key laboratory on Disaster Recuction in Civil Engineering, Tongji University, Shanghai 200092, China)  
Three dimensional finite element analysis of homogeneous soil pile structure shaking table test is carried out in this paper. General purpose finite element program ANSYS is adopted in the analysis. Commonly used equivalent linearity model is chosen to consider the non linearity of soil and the changing status non linearity of soil structure interface is considered by surface to surface contact element. Issues drawn from computational analysis are consistent with test results. The phenomena of separation, reclosing and sliding occur between pile foundation and soil. The distribution of the strain amplitude along the pile is the shape where the large strain is at the top of the pile and the small strain is at the tip of the pile. And the strain amplitude of pile at corners is bigger than middle pile of side row and center pile. The distribution of the contact pressure on the pile soil interface is in the shape where the small pressure is at the top and the large pressure is at the bottom. The pile's sliding of side row is bigger than that of middle row along the vibration direction. The rationality of computational model and analysis method is verified through comparison research between calculation and test results. The present work lays a foundation for further research on SSI.
【Fund】: 国家自然科学基金重点项目 (5 982 3 0 0 2 ;5 0 0 2 5 82 1)
【CateGory Index】: TU311
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