铝合金屋面结构抗风连接改进及其受力性能分析  

Improved wind-resistant connection and loading behavior analysis of an aluminum alloy roof structure under wind load

作　　者：罗永峰[1] 郑祥杰[1] 郭小农[1] 李德章[2] 胡众[3] 

机构地区：[1]同济大学建筑工程系,上海200092 [2]合肥市重点工程建设管理局,安徽合肥230001 [3]合肥市建筑质量安全监督站,安徽合肥230061

出　　处：《空间结构》2013年第2期57-62,96,共7页Spatial Structures

基　　金：国家自然科学基金资助项目(50908168);同济大学安徽省重点项目(20100527)

摘　　要：以某航站楼工程为背景,通过数值分析,研究了不同摩擦系数对传统铝合金屋面围护结构系统抗风承载性能的影响.根据屋面围护结构在风荷载作用下的受力机理及其破坏模式,对传统常规的T形支托构造及相应屋面板板型进行了改进,提出了一种抗风能力更强的屋面围护结构连接构造方式.以改进的咬合面圆弧半径为参数,对新型连接模式进行数值模拟分析,获得了改进后屋面围护结构的抗风失效模式以及抗风承载能力.对改进前后铝合金屋面结构的抗风承载性能进行分析比较,验证了改进连接构造的合理性和有效性.The influence of different friction coefficients on the wind load-bearing capacity of conventional aluminum alloy roof structure taken from an actual international airport is investigated by means of numerical analysis. Based on the force-transferring mechanism and the failure mode, the structure of the T-support and the shape of the panel rib are improved. A new connection type of aluminum alloy roof is proposed, which is higher in resistance of wind uplift. Taken the arc radius below head of the T-support as a parameter, the improved connection is analyzed by numerical method. The failure mode and the wind load-bearing capacity of improved roof system are obtained. Comparison on loading behavior between conventional and improved roof connections verifies the rationality and effectiveness of the improved connection.

关 键 词：铝合金屋面围护结构 构造改进 失效模式 数值模拟 抗风承载力 

分 类 号：TU312[建筑科学—结构工程]