中科院量子院巨型钢框架——上部悬挂下部支承结构建造技术研究  

Constructional Technology Investigation on Mega Steel Frame-Upper Suspensive and Lower Compressive Structure of CAS Center for Excellence in Quantum Information and Quantum Physics

作　　者：霍永伦 王静峰[1,2] 丁敬华 王凯 黄星海 郭磊 HUO Yonglun;WANG Jingfeng;DING Jinghua;WANG Kai;HUANG Xinghai;GUO Lei(School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China;Collaborative Innovation Center for Advanced Steel Structure Technology and Industrialization of Anhui,Hefei 230009,China;Hefei Administrative Bureau of Key Engineering Projects,Hefei 230001,China.)

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]安徽省先进钢结构技术与产业化协同创新中心,合肥230009 [3]合肥市重点工程建设管理局,合肥230001

出　　处：《结构工程师》2020年第6期175-184,共10页Structural Engineers

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-12-0838)。

摘　　要：中国科学院量子信息与量子科技创新研究院1号科研楼A区跨河段采用巨型钢框架—上部悬挂下部支承结构体系,最大跨度达45 m,施工难度大,技术要求高。目前国内外对于此种结构体系的工程应用和理论研究较少见。针对巨型钢框架—上部悬挂下部支承结构体系,提出了此类结构的四种施工方案,采用Midas/Gen软件对不同施工方案进行了仿真模拟,对比分析了不同钢构件安装顺序和楼层混凝土浇筑顺序对整体结构的竖向变形和最大应力的影响,同时讨论了桁架与吊柱等关键构件的变形和应力的变化规律。结果表明:采用由上至下的逆向钢构件安装顺序及由上至下的楼层混凝土顺序能大幅降低结构的竖向变形,降低吊柱的变形与应力,充分发挥桁架的悬挂与支承作用,同时,能降低多数桁架杆件和吊柱在混凝土浇筑过程中的变形和应力。本文研究成果将为上部悬挂下部支承结构体系施工提供科学依据。The cross-river district of the CAS Center for Excellence in Quantum Information and Quantum Physics 1 st Building employed the upper suspensive and lower compressive steel structure.The maximum span of the structure is 45 m accompanied by difficulties in construction and high constructional technical requirements.At present,there are few engineering applications and researches on such structural.Therefore,four constructional measures of the structure are proposed in considering the sequences of steel components installation and floor concrete pouring.Midas/Gen was employed to conduct construction simulation.The effects of different steel component installation sequence and floor concrete pouring sequence on the vertical deformation and maximum stress of the whole structure were analyzed.The deformation and stress variation of the key points of the truss and suspension column were also discussed.The results show that the top-down reverse steel structure installation sequence and the top-down floor concrete sequence can significantly reduce the vertical deformation of the structure and the stress and deformation of the suspension columns,fully developed the carrying action of the truss and reduce the stress and deformation of the majority truss members and suspension columns in the concrete pouring process at the same time.The research in this paper will provide the basis and reference for the construction of the upper suspensive and lower compressive structure.

关 键 词：巨型钢框架 上部悬挂下部支承结构 施工方案 仿真模拟 对比分析 

分 类 号：TU758.11[建筑科学—建筑技术科学]