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（1 同濟(jì)大學(xué)建筑工程系， 上海 200092； 2 上海建工集團(tuán)股份有限公司， 上海 200080； 

3 上海建工一建集團(tuán)有限公司， 上海 200120）

［摘要］本文對(duì)兩個(gè)主次梁螺栓連接節(jié)點(diǎn)試件進(jìn)行了抗彎試驗(yàn)，考慮了連接螺栓直徑對(duì)連接節(jié)點(diǎn)性能的影響，分析了連接節(jié)點(diǎn)的破壞特點(diǎn)、抗彎承載力和剛度。研究表明，連接節(jié)點(diǎn)進(jìn)入屈服時(shí)的彎矩試驗(yàn)值明顯小于鋼梁邊緣屈服的彎矩理論計(jì)算值，連接節(jié)點(diǎn)的最終破壞模式為主梁加勁板螺栓孔受剪破壞，且減小螺栓直徑的規(guī)格及相應(yīng)螺栓孔直徑，節(jié)點(diǎn)的彈性抗彎剛度提高。根據(jù)EC3規(guī)范，連接節(jié)點(diǎn)的抗彎剛度達(dá)不到剛接，在計(jì)算中只能視為鉸接節(jié)點(diǎn)，研究成果將為主次梁螺栓連接節(jié)點(diǎn)的設(shè)計(jì)及施工提供依據(jù)。

［關(guān)鍵詞］主次梁螺栓連接節(jié)點(diǎn)； 抗彎試驗(yàn)； 承載力和剛度； EC3規(guī)范

中圖分類(lèi)號(hào)： TU391 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)：  1002-848X(2016)S1-0553-05

Flexural behaviors of bolted connection between main and secondary beams

Mou Xiaoliang1 ， Tong Lewei1 ， Zhou Feng1 ， Wang Xiao′an2 ， Huang Yulin2 ， Xu Lei3

 (1 Department of Structural Engineering, Tongji University, Shanghai 200092， China;

2 Shanghai Construction Group Co., Ltd., Shanghai 200080， China;

3 Shanghai Construction No.1 (Group) Co., Ltd.， Shanghai 200120, China)

Abstract: An experimental investigation on the bending bahavior of bolted connection between main and secondary beams were carried out. Afterwards the impacts of diameter of bolt on the bending failure mode, the bending strength and stiffness of the connection were analyzed. The experimental results show that the connection joint yield before the flange of the beam. And all the specimens’ failure pattern is the shear failure of the bolt hole on the stiffer of the main beam and reducing the diameter of the bolt and the bolt hole can improve the stiffness of the bolted connection. According to the EC3, this kind of connection can not be treated as rigid connection, it should be treated as pinned connection in the design. And the research results can provide guides for the design and construction of the bolted connection between main and secondary beams.

Keywords: bolted connection between main and secondary beams; bending test; strength and stiffness; EC3

作者簡(jiǎn)介： 牟曉亮，碩士研究生，Email：xiaoliangmou@163.com。