带大跨度钢桁架的多层混合结构设计研究  

Design and research on multiple-storey hybrid structure with large-span steel truss

作　　者：刘国民[1] 曹云中[1] 余佳亮[1] 秦从律[1] 

机构地区：[1]浙江大学建筑设计研究院有限公司,杭州310028

出　　处：《建筑结构》2017年第6期7-11,共5页Building Structure

摘　　要：为控制带大跨度钢桁架的多层建筑结构扭转和层间刚度突变,结构体系采用钢-混凝土混合结构。采用抗震性能化设计以提高结构承载力为主,兼顾结构的延性与耗能能力。在满足使用功能与承载力基础上,桁架选型重点关注腹杆布置方式对整体结构抗震性能的影响。钢-混凝土混合结构的关键支座采用带灌浆孔的铸钢节点,一般支座采用腹板整体裁剪的节点,并通过设置环形加劲板和预浇混凝土保证混合结构节点的钢筋贯通和全截面传力。Steel-concrete hybrid structural system was adopted in the multiple-storey building with large-span steel truss to control torsion and stiffness irregularity of the structure. Performance-based seismic design was adopted to improve bearing capacity of the structure,taking into account structural ductility and energy dissipation capacity at the same time. On the basis that the functional requirement and the criteria of limit state were both met,the influences of web bracing layout on the whole structure seismic performance should be paid attention to during truss type selection. Key combined supports of the steel-concrete hybrid structure adopt cast steel joint with grouting hole,and other combined supports adopt whole web clipping joints. And ring stiffened plate and precast concrete were set to get the steel bars through the structural joints and achieve whole section force transmission.

关 键 词：大跨钢桁架 混合结构 性能化设计 组合支座 

分 类 号：TU391[建筑科学—结构工程]