核筒悬挂建筑减振体系主结构的抗侧性能  

LATERAL PERFORMANCE OF THE MAIN STRUCTURE OF CORE-TUBE SUSPENDED VIBRATION ABSORPTION SYSTEM

作　　者：涂永明[1] 吕志涛[1] 张继文[1] 陈杰 钱洋[3] 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096 [2]南京市民用建筑设计研究院,南京210002 [3]东南大学建筑设计研究院,南京210096

出　　处：《工业建筑》2008年第12期49-53,共5页Industrial Construction

基　　金：国家自然科学基金资助项目(50178018;50808039);教育部博士点基金新教师项目(20070286095);江苏省自然科学基金(BK2008148);华南理工大学亚热带建筑科学国家重点实验室开放研究项目(200824)

摘　　要：对核筒悬挂建筑减振体系主结构的抗侧性能进行了分析,结果表明:在倾覆力矩没有明显增加的前提下,考虑与箱基础倾斜耦合作用的主结构侧向位移比不考虑耦合作用的可能大1倍以上;当悬挂建筑结构的基准频率ω1不变时,其侧向振动幅值受上部结构阻尼比ξ1和激励频率比β的影响显著;推导出了正六边形核筒悬挂建筑主结构在不同抗震设防烈度时的名义高宽比限值,其中,在9度区高宽比限值比较小,因此不适合建造单核筒式悬挂建筑,但可以选择巨型框架式等其他形式。The lateral performance of the main structure of core-tube suspended vibration absorption system is analyzed. The results show that the lateral displacement when considering coupling effect will possibly be twice as that without coupling effect consideration while the overturning moment almost keeps the constant value. When the first order frequency ω1 of the suspended system is invariant, the displacement amplitude of the structure is affected remarkably by the damping ratio ζ1 of the superstructure and the stimulation frequency ratio β. The nominal height-to-width ratios of the main structure of hexagonal core-tube suspended vibration absorption system under different seismic fortification intensities are derived. In the 9-degree seismic zone the height-to-width ratio is small, so the single-core-tube suspended building is not preferred, but other types of suspended system, for example, the mega-frame suspended system, can be sleeted.

关 键 词：悬挂建筑减振体系 抗侧性能 P-Δ效应 耦合作用 高宽比 

分 类 号：TU973.17[建筑科学—结构工程]