图书馆大跨双层钢桁架半悬挂结构设计关键技术研究  

Research on the key technology for the design of large span double-floor steel truss semi suspension structure in library

作　　者：孔祥红 Kong Xianghong(Shanghai Chengxiang Architectural Design Institute Co.Ltd,Shanghai 201103,China)

机构地区：[1]上海城乡建筑设计院有限公司,上海201103

出　　处：《建筑科学》2024年第7期177-186,共10页Building Science

摘　　要：湖州职业技术学院图书馆位于浙江省湖州市,建筑设计以高大空间为主,结构具有大跨度、大悬挑、大悬挂、大开洞等特点。图书馆上部楼层部分竖向构件(核心筒外的钢框柱)不能直接连续贯通落地,通过五层和屋面的钢桁架将竖向荷载传递至核心筒,再通过核心筒传递至基础,形成“现浇钢筋混凝土双核心筒+大跨双层钢桁架半悬挂结构”体系。大跨双层钢桁架半悬挂结构转换跨度达到53m,四周最大悬挑跨度达到13.3m,受力方面具有悬挂结构和空腹桁架结构混合受力的特点,结构体系方面具有创新性。针对这种新型结构体系所涉及到的主桁架施工受力模拟、抗震性能设计、楼盖舒适度、抗连续倒塌和关键连接节点等关键技术问题展开研究。The library of Huzhou Vocational and Technical College is located in Huzhou, Zhejiang Province. Thearchitectural design mainly focuses on tall space, and the structure is characterized by large span, large overhang,large suspension, and large openings. The vertical components of the upper floor of the library (steel framecolumns outside the core tube) cannot directly and continuously connect to the ground. The vertical load istransmitted to the core tube through the steel trusses of the fifth floor and roof, and then to the foundation throughthe core tube, forming a " cast-in-place reinforced concrete double core tube + large span double floor steel trusssemi suspension structure" system. The transition span of the large span double-floor steel truss semi suspensionstructure reaches 53m, and the maximum overhanging span around it reaches 13. 3m. It has the characteristic ofmixed bearing capacity of suspension structure and vierendeel truss structure, and the structural system isinnovative. Research is being conducted on key technical issues related to the construction stress simulation,seismic performance design, floor comfort, anti-progressive collapse, and key connection nodes involved in this newstructural system.

关 键 词：图书馆 钢桁架 悬挂结构 施工顺序 抗连续倒塌 

分 类 号：TU375[建筑科学—结构工程]