A work softening joint element used in dynamic analysis of soil-structure |
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Authors: | Kenzo Toki Cai Yongen Zhao Zhendong |
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Institution: | (1) Disaster Provention Research Institute, Kyoto University, Uji, Kyoto, Japan;(2) Department of Geology, Peking University, 100871 Beijing, China;(3) Institute of Engineering Mechanics, State Seismological Bureau, China |
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Abstract: | This paper introduces an elasto-plastic joint element characterised by strain hardening and softening in the analysis of dynamic
soil-structure interaction. The phenomena of separation and sliding on the contact surface between soil and structure can
be better simulated and the process can also be described. The interaction problems in a typical soil-structure system are
analyzed in terms of elasto-plastic joint element as well as elastic ones. The results show that the elasto-plastic joint
element is much better than the elastic one in modelling, especially in that the relative displacements accross the joint
element can be much greater than that of the elastic case. Separation and sliding are not only related to the coefficient
of friction and cohesion but also to their changes with plastic volumetric strain.
The project is supported by the Sciences Foundation of the Chinese Academy of Sciences and the Disaster Provention Institute
of Kyoto University (Japan). |
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Keywords: | strain softening separation sliding |
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