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《Journal of Shenyang University of Technology》 2011-04
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Anti-seismic strengthening and dynamic time-history analysis of a steel frame structure

LI Min-feng,JIN Guo-fang,YANG Yang,WU Yi-bin(Research Institute of Structural Engineering and Disaster Reduction,Tongji University,Shanghai 200092,China)  
In order to improve the anti-seismic performance of a building with plane abnormity steel frame structure which was not constructed according to the design drawing,the anti-seismic strengthening for the building was carried out with locally adding the steel support.The SAP2000 software was used to establish a spatial model,and then the dynamic time-history analysis for the steel frame structure under both existing and strengthed conditions was performed.In addition,the anti-seismic performance of the structure under various seismic conditions was investigated,and the influence concerning the displacement response of top floor,displacement distribution between floors and shear force distribution of base for the structure was studied.The analysis results show that the anti-seismic deformation of the structure system can be controlled by the optimized strenthening scheme,the torsion effect decreases evidently.And the strengthening scheme can provide the references for the anti-seismic strengthening in similar engineering.
【Fund】: 国家自然科学基金创新研究群体项目(50621062)
【CateGory Index】: TU391
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