单层索网玻璃幕墙与主体结构地震响应的整体分析  

Analysis of the Seismic Response of Single-Layer Cable Net in Glass Wall Coupled with Main Structure

作　　者：李勇[1] 石永久[1] 王元清[1] 

机构地区：[1]结构工程和震动教育部重点实验室,清华大学,北京100084

出　　处：《建筑科学》2009年第7期5-10,24,共7页Building Science

基　　金：高等学校博士学科点专项科研基金资助课题(20050003080);KGE研究基金(200503)

摘　　要：点式玻璃幕墙单层索网柔性支承体系将晶莹通透的建筑玻璃和简洁细小的单层索网有机结合,成为建筑与结构设计融合经典。而当前关于单层索网点式玻璃幕墙抗震性能研究甚少,尤其是主体结构对其地震响应的影响。本文针对不同的主体结构和单层索网的耦合模型,对单独索网地震响应研究进行整体分析。分析结果表明:耦合模型的自振特性具有一定的独立局部自振特性;主体结构对单层索网的地震二次输入影响受主体结构和单层索网自振特性的影响,主要表现为二次输入频谱特性和输入幅值的不同;主体结构对单层索网的地震响应较大,可不同程度的放大或者减弱地震作用;主体结构对索网高阶振型具有激发效应。因而对现有规范玻璃幕墙设计不考虑主体结构的做法提出了挑战,为进一步研究主体结构对幕墙的影响提供参考。Flexible single-layer cable net in point-supported glass wall has become the smart combination of architecture and structure for the transparent glass and concise cable net. Yet the research on the seismic behaviors is still rare nowadays, especially on the effects of connected main structure. Tiffs paper is focused on the integral analysis of the single-layer cable net coupled with the main structure with different parameters. And it is concluded that the natural vibration characteristics of the cable net reveal some local and independent traits ; that the second input of earthquake from the main building to the cable net, shown in the spectrum characteristics and the amplitude, is affected by the characteristics of main building as well as the cable net and that the effects of the main structure on the cable net in seismic response cannot be neglected. The conclusions proposed in this paper challenge the present approach for the related design in codes and serve as a reference for the further research on relevant topics.

关 键 词：单层索网 点式玻璃幕墙 主体结构 整体分析 地震响应 

分 类 号：TU356[建筑科学—结构工程] TU382