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(1 同濟(jì)大學(xué)建筑工程系，上海 200092； 2 哈爾濱工業(yè)大學(xué)土木工程學(xué)院，哈爾濱 150090；3 浙江省溫州市交通工程咨詢監(jiān)理有限公司，溫州 325000； 4 河南科技大學(xué)，洛陽(yáng) 471003)
［摘要］采用自行研制的火災(zāi)試驗(yàn)爐對(duì)3個(gè)中節(jié)點(diǎn)試件進(jìn)行了抗火試驗(yàn)。試件采用足尺形式，柱長(zhǎng)3 000mm，單側(cè)梁長(zhǎng)1 350mm。通過(guò)試驗(yàn)，得到了節(jié)點(diǎn)在同一荷載不同溫度下的溫度-轉(zhuǎn)角關(guān)系。試驗(yàn)表明，端板連接具有良好的延性和抗火能力，節(jié)點(diǎn)的極限轉(zhuǎn)角都超過(guò)了0.03rad；端板厚度對(duì)節(jié)點(diǎn)破壞溫度和破壞時(shí)的極限轉(zhuǎn)角影響不大；柱腹板設(shè)加勁肋可以明顯提高節(jié)點(diǎn)的破壞溫度和極限轉(zhuǎn)角。最后根據(jù)試驗(yàn)結(jié)果提出了設(shè)計(jì)和施工建議。
［關(guān)鍵詞］火災(zāi)試驗(yàn);鋼結(jié)構(gòu);外伸端板節(jié)點(diǎn);溫度轉(zhuǎn)角關(guān)系
Experimental investigation of the behavior of extended end-plate connections under fire
Sui Bingqiang1, Dong Yuli2, Weng Wenlin3, Pan Yongzhan4(1 Department of Building Engineering, Tongji University, Shanghai 200092,China; 2 College of Civil Engineering,
 Harbin Institute of Technology, Harbin 150090，China; 3 Zhejiang Wenzhou Transportation Engineering Consulting & Supervision Co.,Ltd., Wenzhou 325000, China; 4 Henan University of Science and Technology, Luoyang 471003, China)
Abstract:In order to study the fire-resistance behavior of extended end-plate beam-to-column connections in steel frames, three intermediate connections have been tested with the selfmade fire-test furnace. All specimens are full scale, which column is 3 300mm length and beam 1 350mm. From the test results, the relationship between temperatures and angles of rotation is induced. The results of the experiment show that the end-plate connections have excellent behavior of ductility and fire-resistance, and the rotations of connections exceed 0.03 radians. The thickness of end-plate has a little influences on fire-resistance of connections. The column stiffener can improve not only the critical temperature of connections, but also its ultimate angle of rotation. At the end of the paper, suggestions on design and construction based on the experimental results are presented.
Keywords:fire test; steel structures; extended end-plate connections; relationship between temperatures and angles of rotation
國(guó)家重點(diǎn)基礎(chǔ)研究專項(xiàng)經(jīng)費(fèi)(973項(xiàng)目)(2001CB409603)；國(guó)家自然科學(xué)基金重大國(guó)際合作研究項(xiàng)目(50320120156)；山東省優(yōu)秀中青年科學(xué)家科研獎(jiǎng)勵(lì)基金。
作者簡(jiǎn)介：隋炳強(qiáng)，男，博士，國(guó)家一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email: suibq@163.com。
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