长沙Live中庭屋盖大跨空间自由曲面网壳结构设计  

Structure Design on Long-Span Space Free-Form Surface Shell of Atrium Roof of Changsha Live

作　　者：江志峰 郑春林[2] 吴耀华[3] 房鹏鹏[2] 王久生 刘波 JIANG Zhifeng;ZHENG Chunlin;WU Yaohua;FANG Pengpeng;WANG Jiusheng;LIU Bo(Minmetals Land Co.,Ltd.,Beijing 100010,China;China Jingye Engineering Co.,Ltd.,Beijing 100088,China;Central Research Institute of Building and Construction Co.,Ltd.,MCC Group,Beijing 100088,China)

机构地区：[1]五矿地产有限公司,北京100010 [2]中国京冶工程技术有限公司,北京100088 [3]中冶建筑研究总院有限公司,北京100088

出　　处：《工业建筑》2022年第11期169-174,共6页Industrial Construction

摘　　要：长沙LIVE中庭自由曲面屋盖跨越支承在下部4个结构单体上,中间局部为可开合式屋面,二次膜结构生根于主体结构之上,中庭屋盖采用大跨度单层网壳结构。介绍了结构选型及固定铰支座与滑动铰支座的合理设置方法;根据当地自然条件和风洞实验报告进行屋盖的风荷载取值;通过有限元软件MIDAS/Gen对网壳结构进行了静力和整体稳定性分析,并且将网壳与下部混凝土结构协同工作,比较自振周期、位移、支座反力来分析下部结构对网壳结构受力的影响;同时通过有限元模型对节点设计承载力和刚度进行了分析,网壳的各项计算结果均满足要求。此外,在施工过程中进行了变形监测,监测数值均在设计计算范围内。The free-form curved roof of Changsha Live atrium is supported across the four structural monomers in the lower part, the middle part is an openable roof, and the secondary membrane structure is rooted on the main structure. The atrium roof adopts a long-span single-layer reticulated shell structure. The structural selection and the reasonable setting method of fixed hinge supports and sliding hinge supports were introduced. The wind load of the roof should be taken according to the local natural conditions and the wind tunnel test report. The finite element software MIDAS/Gen was used to analyze the static and overall stability of the reticulated shell structure, and the reticulated shell and the lower concrete structure were assembled to analyze the influence of the lower structure on the stress of the reticulated shell structure by comparing the natural vibration period, displacement and support reaction. The design bearing capacity and stiffness of the joint were analyzed by finite element model, all calculation results of reticulated could meet the requirements. In addition, deformation monitoring was carried out during construction, and the monitoring values were within the design calculation range.

关 键 词：单层网壳 滑动铰支座 静力分析 整体稳定性 变形监测 

分 类 号：TU399[建筑科学—结构工程]