高层框架结构远场长周期地震响应分析  

Response-analysis of high-rise frame structure in the far-field long-period ground motions

作　　者：成羽[1] 白国良[1] 蒋连接[1,2] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]宿迁学院建筑工程系,江苏宿迁223800

出　　处：《世界地震工程》2016年第3期145-152,共8页World Earthquake Engineering

基　　金：国家自然科学基金项目(50578129)

摘　　要：首先对3条普通地震波和3条远场长周期地震波进行了频谱特性分析,并对比了普通地震波与远场长周期地震波傅里叶幅值谱的不同点;其次采用ABAQUS大型通用有限元软件建立了16层钢筋混凝土框架结构有限元分析模型,并对高层结构的动力特性进行分析。按照弹塑性时程分析的方法,研究高层框架结构在远场长周期地震动作用下的响应,包括楼层剪力、楼层位移和楼层位移角,并与普通地震动作用下的结构响应进行对比,得出远场长周期地震动对高层框架结构的各个响应均大于普通地震动。Firstly,three general seismic waves and three far-field long-period seismic waves are conducted by ire- quency-spectrum characteristic analysis, and the differences of Fourier Amplitude Spectrum between general seis- mic waves and far-field long-period seismic waves are compared. Then a finite element analysis model of a 16-story reinforced concrete frame structure is built by using large-scale and general finite element software ABAQUS, and the dynamic characteristics of high-rise structures are analyzed at the same time. According to the method of elasto- plastic time-history analysis, the research on responses of high-rise frame structures in the far-field long-period ground motions is conducted, and the responses include the floor-shears, the floor-displacements and the angulars of floor-displacements,and which are compared with the structural responses in the general ground motions. That the responses of high-rise frame structures in the far-field long-period ground motions are larger than them in the general seismic waves is concluded.

关 键 词：长周期地震动 高层框架结构 弹塑性 响应分析 

分 类 号：TU311.3[建筑科学—结构工程]