长周期地震动作用下高层结构地震反应的对比研究  

Comparative Study on Seismic Response of High-rise Structure under Long-period Ground Motions

作　　者：蒋连接[1,2] 白国良[2] 蔡万军 巩思锋 JIANG Lianjie;BAI Guoliang;CAI Wanjun;GONG Sifeng(College of Architectural Engineering,Suqian College 1,Suqian 223800,China;Schoolof Civil Engineering,Xi’an University of Architecture and Technology 2,Xi’an 710055,China;Yancheng Architecture Design&Reseach Institute Co.,Ltd 3,Yancheng 224002,China;Rongqiao Real Estate Group Co.,Ltd 4,Nanjing 210000,China)

机构地区：[1]宿迁学院建筑工程学院,宿迁223800 [2]西安建筑科技大学土木工程学院,西安710055 [3]盐城市建筑设计研究院有限公司,盐城224002 [4]融侨地产集团股份有限公司,南京210000

出　　处：《结构工程师》2018年第4期66-72,共7页Structural Engineers

基　　金：国家自然科学基金项目(51478381);江苏省高校自然科学研究项目(18KJD560005);江苏高校"青蓝工程"优秀青年骨干教师项目资助

摘　　要：从1999年台湾集集地震记录中分别选取4条远场长周期地震动和4条近场长周期地震动作为输入,在其能量特性分析的基础上,对比研究了某32层高层结构弹性地震反应的变化规律和差异。结果表明:随着地震动的Hilbert能量平均周期Tm E逐渐接近结构的基本周期,结构的层间剪力、楼层位移和层间位移角逐渐增大;近场长周期地震动作用下结构的层间剪力、楼层位移和层间位移角普遍大于远场长周期地震动作用下的结果,且楼层的层间位移角明显超出了1/800的限值要求,设计时应关注长周期地震动作用下结构的变形问题。Four far-field long-period ground motions and four near-fault long-period ground motions were chosen as the seismic input from earthquake records of the 1999 Chi-Chi Earthquake at Taiwan.Based on energy property analysis,comparative study on the changes and differences of elastic earthquake response of a 32-story high-rise structure was conducted.The results show that with the Hilbert energy average period TmE is gradually close to the natural period of the structure,inter-story shear,floor displacements and inter-story displacement angles gradually increase;and these seismic response results under near-fault long-period ground motions are larger than those subjected to far-field long-period ground motions.As the inter-story displacement angles are obviously beyond the 1/800 limit requirements,deformation of the structures under long-period ground motions should be concerned.

关 键 词：远场长周期地震动 近场长周期地震动 高层结构 弹性时程分析 地震反应 

分 类 号：TU973.31[建筑科学—结构工程]