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《Journal of Earthquake Engineering and Engineering Vibration》 2010-01
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Performance of composite isolation bearing in lattice roof structures

TANG Baijian,ZHANG Jian(Civil Engineering Department,Jiangsu University of Science and Technology,Zhenjiang 212003,China)  
The lead-rubber bearing and the disk spring were combined to be a new composite isolation bearing,which was applied to the lattice roof structures.In the primary design,the series spring model was for pre-choosing the parameters of lead-rubber bearing,while the single spring model was for the parameters of disk spring.Jianzhen library was taken as an example for modal analysis and time history dynamic analysis respectively under horizontal and vertical ground motions.The results indicate that the composite isolation technology can decrease the acceleration of roof structure and the lower structure about 60%,decrease the reaction of restraints about 30%,however,under horizontal earthquake the lateral displacement of roof structure will be magnified evidently.The models for pre-choosing the parameters of isolation bearing is feasible for primary design.
【Fund】: 国家自然科学基金项目(50948035);; 江苏省自然科学基金项目(BK2009723)
【CateGory Index】: TU352.12
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