漳浦县文体中心体育场对拉非对称双拱大跨度屋盖结构设计
Structural design of counterbalanced asymmetric double-arch large-span roof structure of Zhangpu County Cultural and Sports Center Stadium
易伟文 1赵颖 1江毅 2苏国活 3陶文登1
作者信息
- 1. 华南理工大学建筑设计研究院有限公司,广州 510641
- 2. 华南理工大学建筑设计研究院有限公司,广州 510641;华南理工大学土木与交通学院,广州 510641
- 3. 中建四局第一建设有限公司,深圳 518038
- 折叠
摘要
对漳浦县文体中心体育场对拉非对称双拱大跨度屋盖结构设计的难点、关键点进行了介绍.大屋盖双巨拱跨度达 132m,非对称布置,与水平面呈 14.88°夹角,前拱中段无支承,受力机制复杂.为解决该问题,前、后拱之间设置对拉钢桁架,将"树杈"状拱脚、前拱、后拱、看台V形混凝土斜柱等组成一个自平衡体系.为满足建筑自然采光,大屋盖上覆膜材选用高透光率的ETFE膜材,通过沿钢桁架方向的预应力拉索保证其受力及稳定性.采用SAP2000 和MIDAS Gen软件对该创新体系进行了弹性计算与屈曲分析,并利用ABAQUS软件进行了罕遇地震下的弹塑性动力响应分析和整体稳定临界荷载分析.分析结果表明,该体系的各项指标基本满足规范要求,具体良好的整体稳定性和抗震性能.
Abstract
The design difficulties and key points of counterbalanced asymmetric double-arch large-span roof structure of Zhangpu County Cultural and Sports Center Stadium were introduced.The large roof double giant arch spans 132 meters and is asymmetrically arranged,forming an angle of 14.88 degrees with the horizontal plane.The middle section of the front arch has no support and the stress mechanism is complex.To solve this problem,counterbalanced steel truss was set between the front and rear arches to form a self-balancing system consisting of"tree-like"arch foot,front arch,rear arch,and stand V-shaped concrete oblique columns.In order to meet the natural lighting requirements of the building,the large roof was covered with high-transparency ETFE membrane material,which ensures its stress and stability through prestressed cables along the direction of the steel truss.The elastic calculation and buckling analysis of this innovative system were conducted using SAP2000 and MIDAS Gen softwares,and the elastoplastic dynamic response analysis and overall stability critical load analysis under rare earthquakes were conducted using ABAQUS software.The analysis results show that the various indicators of this system basically meet the requirements of the specifications,with good overall stability and seismic performance.
关键词
大跨度屋盖/巨拱/非对称双拱/对拉钢桁架/自平衡体系/"树杈"状拱脚/ETFE膜材/整体稳定临界荷载Key words
large-span roof/mega arch/asymmetric double-arch/counterbalanced steel truss/self-balancing system/"tree-like"arch foot/ETFE membrane material/overall stability critical load引用本文复制引用
基金项目
企业横向科研基金项目(x2jzD8220300)
出版年
2024
NETL
NSTL
万方数据