索网玻璃幕墙结构抗震性能研究  

Seismic behavior of cable net facade

作　　者：冯若强[1,2] 王鑫[1] 叶继红[1] 

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]中国矿业大学江苏省土木工程环境灾变与结构可靠性重点实验室,江苏徐州221008

出　　处：《振动工程学报》2013年第4期477-486,共10页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(50908044;51278117);国家杰出青年基金资助项目(51125031);江苏省自然科学基金资助项目(SBK201123270);江苏省土木工程环境灾变与结构可靠性重点实验室开放基金资助项目(2011KA05);深圳市科技计划资助项目(20080624_1554)

摘　　要：采用了模型试验和数值模拟的方法对单层平面索网玻璃幕墙结构的抗震性能进行研究。首先通过地震模拟振动台试验研究了地震荷载作用下单层索网幕墙结构的地震响应特点,考察了索网和玻璃连接爪件性能,检验了玻璃幕墙的抗震性能。然后讨论了玻璃对于地震荷载作用下结构地震响应的影响,对玻璃与索网协同工作下结构的动力性能进行了研究。建立了地震荷载作用下玻璃与索网协同工作的数值模型,采用该模型分析了结构的地震响应。数值分析和试验结果表明:地震荷载作用下,索网模型和索网+玻璃模型地震响应主要以对称振型为主,结构第1阶振型占绝对主要成分;玻璃面板对索网幕墙结构的刚度影响很小;索网+玻璃结构的阻尼远大于索网的阻尼,玻璃幕墙结构的阻尼主要是由玻璃提供的;采用夹片爪的玻璃面板和索网结构连接可靠,索结构和玻璃面板没有破坏;索网玻璃幕墙结构具有较好的抗震性能,可以在地震较高烈度地区使用。Shaking table tests and theoretical analysis were conducted to study the dynamic performance of cable net facade in consideration of glass panels under earthquake.Firstly,dynamic response of cable net facade under earthquake was investigated with shaking table test.Then,the dynamic performance of the clamping joint and the glass panels were examined.The effect of glass panels on the dynamic performance of cable net facade was investigated.A numerical simulation model of glass panel＇s working in coordination with cable net was built and is employed to analyse the seismic response.The study indicates that on most occasions the seismic response of the cable net with glass panels and the cable net only are mainly decided by the symmetric modes,and the first vibration mode is dominant.The effect of glass panels on the stiffness of cable net was little.The damping of cable net facade is mainly decided by glass panels.The clamping joint showed good performance under earthquake,allowing the cable structure and glass panels in good condition.Cable net facade has good aseismic performance and could beapplied in high intensity region.

关 键 词：玻璃结构 点支式玻璃幕墙 索结构 抗震性能 协同工作 

分 类 号：TU382[建筑科学—结构工程] TU973.31