摘要
上海少年儿童图书馆新馆属于复杂钢框架结构,采用空间大跨度弧形桁架进行竖向托柱转换,实现了平面弧形承载、立面拱形架空的建筑造型。介绍了结构选型和布置特点以及结构设计基本情况,对结构中形成的不规则性提出相应的加强措施,补充了小震弹性时程分析,并针对结构中因楼板开洞形成的穿层柱进行了线弹性屈曲分析。同时,对结构设计中的关键部位(转换桁架、转换柱)提出性能化要求,并作等效静力弹塑性分析及罕遇地震下动力弹塑性分析。结果表明,结构可满足规范设计及各项性能指标要求。
The new building of Shanghai Children′s Library is a complex steel frame structure,which uses a large-span arc truss to convert vertical pillars,and realizes the architectural shape of plane arc bearing and vertical arch overhead.The structural selection and layout characteristics and the basic situation of structural design were introduced,corresponding strengthening measures to the irregularities formed in the structure were proposed,the elastic earthquake time history analysis were supplemented,and aims at the penetrating columns formed by the opening of the floor a linear elastic buckling analysis was performed.At the same time,performance requirements are put forward for the key parts(converted truss and converted columns)in structural design,and equivalent static elastoplastic analysis and dynamic elastoplastic analysis under rare earthquakes are made.The results show that the structure can meet the requirements of specification design and various performance indexes.
作者
侯建强
HOU Jianqiang(Arcplus Institute of Shanghai Architectural Design&Research Co.,Ltd.,Shanghai 200092,China)
出处
《建筑结构》
CSCD
北大核心
2020年第S01期289-294,共6页
Building Structure
关键词
复杂钢结构
大跨度
弧形转换桁架
动力弹塑性分析
complex steel structure
long span
arc conversion truss
dynamic elastoplastic analysis