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《Explosion and Shock Waves》 2004-01
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Dynamic responses of sliding base isolated buildings subjected to shock wave of underground explosion

TIAN Li, LI Zhong xian (School of Civil Engineering, Tianjin University, Tianjin 300072, China)  
In this paper, the dynamic responses, caused by the accidental explosion inside the circular liners buried in soil, of sliding base isolated buildings located on the surface of ground, are investigated by considering the interaction between soil and structures. In the analysis for the interaction between soil and structures, the calculated models for the finite soil, the semi infinite soil and the sliding base isolated building are established using a method considering with the finite element, the infinite element and the lumped mass system. In the analysis for sliding base isolation, instead of the traditional Coulomb friction model the continuous friction model is proposed in order to avoid to trace the transient boundary between meshing and sliding and to reduce the calculated error. Finally, the dynamic responses of a 6 story building with sliding base isolation, excited by the shock wave of underground explosion, is numerically simulated to investigate the effect of sliding base isolation and the influence of different isolation parameters on the effect, which provides a helpful reference for either related academic research or practices in engineering.
【Fund】: 国家自然科学基金项目 (5 0 1 780 4 7)
【CateGory Index】: TU352.1
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