考虑玻璃刚度的高层幕墙地震响应数值分析  

Numerical analysis for seismic response of a super-tall curtain wall structure considering glass stiffness

作　　者：杨颜志[1] 金先龙[1,2] 王建[3] 李烨[3] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]上海交通大学机械系统与振动国家重点实验室,上海200240 [3]华东建筑设计研究院有限公司,上海200002

出　　处：《振动与冲击》2012年第8期86-91,共6页Journal of Vibration and Shock

基　　金：国家863高技术研究发展计划(2009AA01A131);国家自然科学基金(50875166;11072150)

摘　　要：玻璃幕墙设计一般认为幕墙结构的力学性能主要由支承结构决定,常常忽略玻璃刚度对于幕墙的影响,或者将玻璃等效为质量施加于幕墙支承结构。然而对于超高层悬挂式幕墙结构,当承受较大风载和地震作用时,幕墙支承结构将产生较大变形,此时玻璃刚度将一定程度影响幕墙整体刚度。针对这一问题,依托上海某在建超高层大厦幕墙,研究了考虑玻璃刚度的大厦幕墙地震响应。并将此与未考虑玻璃刚度的地震响应进行对比分析,结果表明玻璃刚度增大了幕墙整体刚度,从而一定程度上减少了幕墙变形以及幕墙杆件的应力,但对大厦主体结构影响较少。本文最终的计算结果可作为该工程幕墙抗震设计参考依据。It is generally believed that the mechanical properties of a curtain wall structure are determined mainly with its curtain supporting structure in curtain wall design, and the effect of glass stiffness on the curtain wall is often ignored, or the glass panel is simplified in to an equiralent mass imposed on the curtain supporting structure. However, for a super-tall suspended curtain wall structure, the curtain supporting structure generates a large deformation when it withstands severe wind and earthquake, then the glass stiffness affects the overall stiffness of the curtain wall structure. For this problem, taking a super-tall curtain wall under construction in Shanghai as a studying object, the seismic response of the curtain wall structure considering glass stiffness was studied, and the results with glass stiffness were contrasted with those without glass panel. It was shown that the glass stiffness increases the overall stiffness of the curtain wall structure, so it decreases its deformation and the stress of its bars to some extent, but it has less effect on the main structure of the building; the final results can be used as a reference for aseisime design of this super-tall curtain wall structure.

关 键 词：玻璃幕墙 玻璃刚度 幕墙整体刚度 地震响应 

分 类 号：TU311[建筑科学—结构工程]