大跨度空间结构地震响应组成分量研究  

RESEARCH ON SEISMIC RESPONSE COMPONENTS OF LARGE-SPAN SPATIAL STRUCTURES

作　　者：廖冰[1] 罗永峰[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《工业建筑》2015年第2期107-113,158,共8页Industrial Construction

基　　金：国家自然科学基金项目(51078289)

摘　　要：应用振型叠加法进行大跨度空间结构地震响应分析时,常存在计算效率低、难以考虑地震作用随机特性等问题。为此,对大跨度空间结构的地震响应组成分量,包括准静力响应和共振响应进行研究和定义;根据响应分量的组成研究,提出适用于大跨度空间结构地震响应振型叠加分析法的修正策略;以两类典型的大跨度结构形式为算例,对各响应分量的特性及分量间相关性的影响进行研究,总结大跨度空间结构地震各响应分量的分布特征。When the mode superposition method is applied to the seismic responses analysis of large-span spatial structures,several problems always become difficult to handle,such as the inefficient calculation and the incapable consideration of earthquake random property. To solve the problems,the seismic response components of large-span spatial structures,including the quasi-static components and resonant components were studied and defined. Based on the seismic response component research,a modified strategy for the mode superposition method of seismic responses of large-span spatial structures was proposed. Through numerical analysis of two typical shell structures, the characteristics of the quasi-static responses and resonant responses and effects of correlation between two components were studied. The distribution features of each response component of large-span spatial structures were summarized.

关 键 词：大跨度空间结构 地震响应分量 准静力响应 共振响应 

分 类 号：TU311.3[建筑科学—结构工程]