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    李  斌，高春彥，王  斌，張  飛
    (內(nèi)蒙古科技大學(xué)建筑與土木工程學(xué)院，包頭014010)

[摘要] 通過(guò)對(duì)9根方鋼管混凝土柱的偏心受壓試驗(yàn)，分析研究了偏心率、長(zhǎng)細(xì)比和混凝土強(qiáng)度等參數(shù)對(duì)方鋼管混凝土偏心受壓柱受力性能的影響規(guī)律。結(jié)果表明：偏心率和長(zhǎng)細(xì)比是影響該種構(gòu)件受力性能的主要因素，隨著長(zhǎng)細(xì)比和偏心率的增長(zhǎng)，柱的極限承載力降低，破壞模式改變；混凝土強(qiáng)度對(duì)柱受力性能的影響甚微，只有長(zhǎng)細(xì)比和偏心率較小時(shí)才有提高承載力的作用。
[關(guān)鍵詞] 方鋼管混凝土；偏心受壓柱；偏心率；長(zhǎng)細(xì)比

Research on the mechanics behavior of concrete-filled square steel tubular columns subjected to eccentric compression
Li Bin, Gao Chunyan, Wang Bin, Zhang Fei
( School of Architecture & Civil Engineering,lnner Mongolia University of Science & Technology, Baotou 014010, China)

Abstract: Through eccentric compression experiment on nine concrete-filled square steel tube columns, the influence laws of eccentricity ratios, slenderness ratios and concrete strength on the mechanics behavior of the concrete-filled square steel tubular columns subjected to eccentric compression were researched. The results indicate that the eccentricity ratios and slenderness ratios are the primary factors to influence the mechanics behavior of the specimens, and with the increase of eccentricity ratios and slenderness ratios, the beanng capacity of the columns reduce gradually, the failure mode change. The influence of concrete strength on the mechanics behavior of the concrete-filled square steel tube columns subjected to eccentric compression is very slight and the bearing capacity of the columns can be increased only when the eccentricity ratios and slenderness ratios are very small.
Keywords: concrete-filled square steel tube; column subjected to eccentric compression; eccentricity ratio; slenderness ratio