单层平面索网玻璃幕墙结构地震反应分析  

Seismic response of cable net facade

作　　者：冯若强[1,2] 叶继红[1] 武岳[3] 沈世钊[3] 

机构地区：[1]东南大学混凝土与预应力混凝土结构教育部重点实验室,江苏南京210096 [2]哈尔滨工业大学深圳研究生院,广东深圳518055 [3]哈尔滨工业大学,黑龙江哈尔滨150090

出　　处：《土木工程学报》2010年第S1期66-71,共6页China Civil Engineering Journal

基　　金：国家自然科学基金(50908044);中国博士后基金(20070420164);广东省自然科学基金(07300027);深圳市科技计划(20080624_1554)

摘　　要：单层平面索网玻璃幕墙结构作为一种新型结构形式,以建筑造型美观,构件轻巧纤细,广泛应用于大型公共建筑中,其具有柔性大、阻尼小等特点。作为一种新型结构形式,目前对其地震反应特点和抗震原则缺乏了解。在采用振型分解反应谱法进行单层平面索网结构抗震设计时,会有多阶振型参与结构振动,高阶振型可能也需要考虑,这就需要给出一个选择主要贡献模态的判断标准。此外,单层平面索网玻璃幕墙由脆性材料的玻璃面板和没有明显的屈服台阶和强化阶段的索组成,目前我国抗震规范给出的三水准两阶段的抗震设计对其可能并不适用,需要对其抗震设计原则进行进一步的探讨。As a new kind of glazing system,cable net facade is widely used with many advantages,such as pleasing aesthetics,easy constructability and so on.Moreover,it has the characteristics of weak stiffness,light weight,small damping.As a new structure,we knew little about the seismic response characteristics and seismic design principals of cable net fa ade.When mode decomposition response spectrum method was used to the seismic response analysis of cable net fa ade,high modes may have contribution on the seismic response of cable net fa ade.While no generally accepted method or conclusion exists regarding the necessary number of modes required for such analysis at present,so the proper accepted method and conclusion need to be studied.Since cable net facade consists of the brittle glass panels and the cable without obvious yielding stress,the seismic design principals in code for seismic design of building(2008) may not be applicable,and the new seismic design principals for cable net fa ade were needed.

关 键 词：点支式玻璃幕墙 索结构 振型分解反应谱法 抗震设计 

分 类 号：TU399[建筑科学—结构工程] TU311.3