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《Earthquake Resistant Engineering and Retrofitting》 2010-02
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Studies on a Seismic Retrofitting Method Which Cuts off the Bottom Columns and Adds Isolators for the Damaged Ground Floor Frame

Zhou Yun1,Wu Cong-xiao1,Wu Cong-yong2(1.School of Civil Engineering of Guangzhou University,Guangzhou 510006,China;2.Architecture Design Institute of Guangzhou University,Guangzhou 510405,China)  
The damage characteristics and causes of the structures whose ground floor were suffered damage and the other floors were minor ones in WenChuan earthquake are studied,a suitable method of seismic retrofitting for this kind of damaged structures which cuts off the bottom damage columns and adds isolators is proposed.Three schemes are included in the method,they are removing the bottom story columns and adding isolators,cutting off the bottom damaged columns and adding isolators,the same with scheme 2 but with energy dissipation devices.This kind of damaged buildings could be reused due to the adoption of the method,so the reconstruction expense of disaster area is saved.Based on an engineering example,the above three schemes are analyzed.The analysis results indicate that the proposed retrofitting method is valid,and the structural seismic behavior of the damaged building could be obviously improved to meet the new earthquake fortification requirements of seismic code.
【CateGory Index】: TU352.11
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