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(1 西安建筑科技大學(xué) 710055；  2 青島理工大學(xué)，266033； 3 山東省建設(shè)廳，濟(jì)南 250001)
［提要］對(duì)3根H型截面鋼柱進(jìn)行了火災(zāi)行為的試驗(yàn)研究。采用足尺試驗(yàn)形式，柱長(zhǎng)3 300mm，鋼柱在試驗(yàn)過程中限制軸向變形。通過試驗(yàn)得出了鋼柱在火災(zāi)下的側(cè)向變形情況，結(jié)果證明限制軸向變形對(duì)鋼柱火災(zāi)行為產(chǎn)生明顯的影響。試驗(yàn)結(jié)果為今后鋼結(jié)構(gòu)火災(zāi)行為研究提供了依據(jù)。
［關(guān)鍵詞］鋼結(jié)構(gòu) 火災(zāi) H型截面 鋼柱 側(cè)向變形
Anti fire Experimental Research on H Section Steel Columns/Li Xiaodong１,2,Dong Yuli1,2,3,Lü Junli２(1 Xi'an University of Architecture & Technology,Xi'an 710055,China; 2 Qingdao Technology University 266033 Qingdao,China; 3 Shandong Construction Bueeru,Jinan 250001,China)
Abstract:The behaviours of three H section steel columns under fire are investigated.All the columns are full scale with 3 300mm length under axial restraint.From the test results,the regularities of lateral deflection are presented.The results of the experiment show that the behaviours of steel columns under fire are influenced by restrained thermal elongation.Conclusion of the study provides a basis for further research to explore fire behaviours of steel structures.
Keywords:steel structure; fire; H section; steel column; lateral deflection

*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)基金資助項(xiàng)目。