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（浙江大學(xué)建筑設(shè)計(jì)研究院有限公司， 杭州 310028）

［摘要］為控制帶大跨度鋼桁架的多層建筑結(jié)構(gòu)扭轉(zhuǎn)和層間剛度突變，結(jié)構(gòu)體系采用鋼-混凝土混合結(jié)構(gòu)。采用抗震性能化設(shè)計(jì)以提高結(jié)構(gòu)承載力為主，兼顧結(jié)構(gòu)的延性與耗能能力。在滿(mǎn)足使用功能與承載力基礎(chǔ)上，桁架選型重點(diǎn)關(guān)注腹桿布置方式對(duì)整體結(jié)構(gòu)抗震性能的影響。鋼-混凝土混合結(jié)構(gòu)的關(guān)鍵支座采用帶灌漿孔的鑄鋼節(jié)點(diǎn)，一般支座采用腹板整體裁剪的節(jié)點(diǎn)，并通過(guò)設(shè)置環(huán)形加勁板和預(yù)澆混凝土保證混合結(jié)構(gòu)節(jié)點(diǎn)的鋼筋貫通和全截面?zhèn)髁Α?/p>

［關(guān)鍵詞］大跨鋼桁架； 混合結(jié)構(gòu)； 性能化設(shè)計(jì)； 組合支座

中圖分類(lèi)號(hào)：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)06-0007-05

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

Liu Guomin, Cao Yunzhong, Yu Jialiang, Qin Conglü

(Architectural Design and Research Institute of Zhejiang University Co., Ltd., Hangzhou 310028, China)

Abstract: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.

Keywords:large-steel truss; hybrid structure; performance-based design; combined support

作者簡(jiǎn)介：劉國(guó)民，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email: liugm@zuadr.com。