广州空港会展中心复合张弦桁架结构体系选型与分析  

Selection and analysis of composite string truss structure system for Guangzhou Airport Convention and Exhibition Center

作　　者：陈进于 区彤 罗赤宇 张佳武 林章尹 张增球 CHEN Jinyu;OU Tong;LUO Chiyu;ZHANG Jiawu;LIN Zhangyin;ZHANG Zengqiu(Guangdong Architectural Design&Research Institute Co.,Ltd.,Guangzhou 510010,China;School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广东省建筑设计研究院有限公司,广州510010 [2]广州大学土木工程学院,广州510006

出　　处：《建筑结构》2022年第21期88-95,共8页Building Structure

基　　金：国家自然科学基金青年基金项目(51408030)。

摘　　要：广州空港会展中心标准展馆利用结构参数化工具对多种类型展馆结构进行选型对比,综合建筑效果、使用需求和经济指标,首次在展馆内采用复合张弦桁架结构体系。对复合张弦桁架结构进行非线性设计分析、双非线性稳定分析、防连续性倒塌分析和不平衡吊挂荷载分析,结果显示,结构各项计算指标均满足规范要求,并具有足够安全冗余度。高风压作用下拉索可维持足够的索力并且不松弛,屋面变形可控。相关索节点传力清晰,背锚节点有利于现场张拉施工。下弦拉杆在初始态到全荷载态的全受力过程中拉压变向,下弦杆受力满足不同荷载状态需求。复合张弦桁架结构体系满足多种施工方式选择,张拉施工快捷、方便,地坪、屋盖施工互不干扰。复合张弦桁架结构在沿海高风压地区具有优越的受力性能和建筑表现力。The standard exhibition hall of Guangzhou Airport Convention and Exhibition Center uses the structural parameterization tool to compare the structural system selection of various types of exhibition halls,and integrates architectural effects,usage requirements and economic indicators.For the first time,the composite string truss structure system was used in the exhibition hall.The non-linear design analysis,double nonlinear stability analysis,anti-progressive collapse analysis and unbalanced hanging load analysis were carried out on the composite string truss structure.The results show that the calculation indicators of the structure meet the requirements of the code and have sufficient safety redundancy.Under the action of high wind pressure,the pull-down cable can maintain sufficient cable force without slack,and the roof deformation can be controlled.The relevant cable nodes have clear force transmission,and the back anchor nodes are conducive to on-site tension construction.The lower chord tie rod changes direction in tension and compression during the full stress process from the initial state to the full load state,and the stress of the lower chord rod meets the requirements of different load states.The composite tension string truss structure system can meet the selection of various construction methods.The tension construction is fast and convenient,and the construction of the floor and the roof does not interfere with each other.The composite string truss structure has superior mechanical performance and architectural expression in coastal areas with high wind pressure.

关 键 词：广州空港会展中心 复合张弦桁架 双非线性稳定分析 结构参数化 光纤智慧索 拉索背锚节点 高风压地区 

分 类 号：TU398.7[建筑科学—结构工程]