南充博物馆结构设计  

Structural design of Nanchong Museum

作　　者：卢挺[1] 伍庶[1] 邓鑫 LU Ting;WU Shu;DENG Xin(China Southwest Architectural Design and Research Institute Co.,Ltd.,Chengdu 610081,China)

机构地区：[1]中国建筑西南设计研究院有限公司,成都610081

出　　处：《建筑结构》2023年第15期34-40,13,共8页Building Structure

摘　　要：南充博物馆采用钢筋混凝土筒体(内置钢框架-支撑)-钢桁架-钢筋混凝土框架组成的混合结构体系,该项目的整体抗侧力体系为4个钢筋混凝土筒体及与其相连的大跨度钢桁架,所采用的结构体系暂未列入现行设计规范。对项目的抗震性能设计、大跨钢桁架变形及温度应力计算、舒适度验算、典型节点设计等进行介绍。结果表明:该结构体系具有可靠的抗侧刚度及抗震性能,但钢筋混凝土筒体刚度大、约束强,大跨度钢桁架温度应力对结构整体受力影响不可忽略。大跨度钢桁架与钢筋混凝土筒体合拢连接后,与上下层楼盖形成整体受力,楼盖会产生较大的拉压应力,应在设计中充分重视。Nanchong Museum adopts a mixed structure system composed of reinforced concrete tubes(built-in steel frame supported)-steel trusses-reinforced concrete frame.The overall lateral force resistance system of the project consists of 4 reinforced concrete tubes and their connected large-span steel trusses.The structural system adopted has not been included in the current design code.The seismic performance design,deformation and temperature stress calculation of large-span steel trusses,comfort checking calculation,typical joint design of project were introduced.The results show that this structural system has reliable lateral stiffness and seismic performance.But the influence of reinforced concrete tubes with large stiffness and strong restraint and the temperature stress of large-span steel trusses on overall stress of the structure cannot be ignored.In addition,what needs to be paid full attention to is the completely connection of the large-span steel trusses with the reinforced concrete tubes forms an overall stress with the upper and lower floors,which might generate large tensile and compressive stress.

关 键 词：南充博物馆 混合结构 钢筋混凝土筒体 大跨度钢桁架 整体抗侧力体系 

分 类 号：TU398.9[建筑科学—结构工程]