新型悬挂减振体系三个问题的概念分析  

Conceptual analysis of three problems on the new type suspended vibration-evadable system

作　　者：涂永明[1] 张继文[1] 吕志涛[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：《中国科技论文在线》2007年第9期651-657,共7页

基　　金：国家自然科学基金重点项目(50238030);国家自然科学基金(50178018);国家高技术研究发展计划(863计划)(2001AA336010)

摘　　要：本文针对新型悬挂减振体系的三个问题进行了概念分析;研究了P-Δ效应下核筒侧移与箱基础倾斜的静力耦合关系,根据静力分析,考虑耦合的主结构侧向位移比不考虑耦合的可能会大得多,而倾覆力矩却没有明显增加。本文还分析悬挂次结构刚体的摆动问题,表明刚体动力分析方法比质点动力分析方法更加接近于真实;且若要使得悬挂减振体系的主、次结构的动力响应都达到优化要求,则地震波的衰减系数既不能太大,也不能太小。根据现行规范,分别得到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。Conceptual analysis of three problems on the new type suspended vibration-evadable system is brought forward in this paper.The static coupling relationship between the lateral displacement of the core tube and inclination of the box basement under the P-⊿ effect is analyzed,which indicates that the lateral displacement considering the coupling relationship will be much more than that without while the overturning moment almost keeping the same value.The rigid-body swaying function of the secondary structures is constructed and solved analytically,which indicating that a secondary structure is considered as rigid body is more rational than that is considered as a lumped mass,and when the attenuation coefficient of the earthquake wave is moderate,the dynamic responses of the major and secondary structures of the suspended structure will be optimal.Based on the current Chinese Code,the nominal height-to-width ratios of the hexagonal core-tube suspended building structure under different seismic fortification intensities are listed.

关 键 词：结构工程 结构性能 概念分析 悬挂减振体系 

分 类 号：TU352.1[建筑科学—结构工程]