某大跨双曲抛物面单层钢网壳结构设计与难点分析  

Design and Difficulty Analysis of a Large-span Hyperbolic Paraboloid Single-layer Steel Latticed Shell Structure

作　　者：杨万 江毅 易伟文 YANG Wan;JIANG Yi;YI Weiwen(South China University of Technology Architectural Design and Research Institute Co.,Ltd.Guangzhou 510641,China)

机构地区：[1]华南理工大学建筑设计研究院有限公司,广州510641

出　　处：《广东土木与建筑》2023年第8期43-47,共5页Guangdong Architecture Civil Engineering

摘　　要：北京某大学新校区体育馆屋盖呈双曲抛物面形态,采用单层钢网壳结构,支撑在底部钢筋混凝土框架结构上。为深入研究空间双曲抛物面的受力性能,采用了SAP2000、YJK等有限元软件对结构进行了静力及地震反应谱弹性分析、动力弹塑性分析、稳定性分析及关键节点应力分析,并对结构设计中的难点进行分析并给出相应对策。分析结果表明,针对结构设计难点所做的对策,可保证受力的可行性及安全性;钢屋盖的稳定安全系数为4.5,安全度较大,具有一定的优化空间;钢屋盖结构受力合理,关键节点安全可靠,抗震性能良好,满足“大震不倒”的设防要求,可为类似工程的应用实践提供参考。The gymnasium roof of a new campus of a university in Beijing is in the form of a hyperbolic paraboloid,which adopts a single lattice shell structure and supports the reinforced concrete frame structure at the bottom.In order to further study the mechanical perfor‐mance of spatial hyperbolic paraboloid structure,finite element software such as SAP2000,ABAQUS are used to carry out static analysis,seismic response spectrum analysis,dynamic elastic-plastic analysis,stability analysis and key node stress analysis of the structure,and the difficulties in the design of the structure are analyzed and the corresponding countermeasures are given.The analysis results show that the countermeasures for the structural design difficulties can ensure the feasibility and safety of the structure.The stability safety factor of the steel roof is 4.5,which is relatively safe and has a certain optimization space.The steel roof structure is reasonable,the key nodes are safe and reliable,and the seismic performance is good,which meets the seismic fortification target of"No Collapsing in the Strong Earthquake".And it can provide reference for similar projects.

关 键 词：双曲抛物面屋盖 单层网壳 弹性分析 整体稳定分析 动力弹塑性分析 节点分析 

分 类 号：TU393.3[建筑科学—结构工程]