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（1 合肥工業(yè)大學(xué)土木與水利工程學(xué)院， 合肥 230009； 2 哈爾濱工業(yè)大學(xué)（深圳）土木與環(huán)境工程學(xué)院， 深圳 518055）

［摘要］采用試驗(yàn)研究的方法，對(duì)6061-T6系列和6063-T5系列的鋁合金矩形開孔柱的軸心受壓性能進(jìn)行了試驗(yàn)研究。試驗(yàn)主要研究了材料的力學(xué)性能、試件的初始幾何缺陷、變形性能、破壞模式、軸壓承載力、孔洞的存在及數(shù)目對(duì)鋁合金軸心受壓構(gòu)件承載力和屈曲模式的影響等，并將試驗(yàn)所得結(jié)果與各國(guó)鋁合金設(shè)計(jì)規(guī)范中相關(guān)公式計(jì)算所得結(jié)果和北美冷彎型鋼軸心受壓開孔構(gòu)件的有效寬度法公式的計(jì)算結(jié)果進(jìn)行了對(duì)比。通過試驗(yàn)和對(duì)比發(fā)現(xiàn)：中國(guó)規(guī)范關(guān)于鋁合金軸心受壓構(gòu)件極限承載力的計(jì)算結(jié)果偏大，歐洲規(guī)范更貼近試驗(yàn)結(jié)果，孔洞的存在降低了構(gòu)件的承載力，北美冷彎型鋼軸心受壓開孔構(gòu)件的計(jì)算公式不適用于鋁合金開孔構(gòu)件。

［關(guān)鍵詞］鋁合金； 矩形截面； 開孔柱； 軸心受壓； 試驗(yàn)研究

中圖分類號(hào)：TU395文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)19-0071-06

Experimental study on axial compressive performance of aluminium alloy RHS columns with holes

Feng Ran1,2, Shen Chengdong1, Zhu Wu1, Jiang Lubin1

(1 School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; 2 School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, China)

Abstract:An experimental investigation was conducted on 6061-T6 and 6063-T5 aluminium alloy rectangular hollow section (RHS) columns with holes under axial compression. The mechanical properties,  initial geometric defects of the specimens,  deformation performance,  failure modes,  ultimate strengths and the effects of the existence and amount of holes on the load-carrying capacity and buckling modes of aluminium alloy RHS columns were all studied. The test results were compared with calculation results obtained from different design specifications for aluminium alloy structures and the effective width method for cold-formed steel members with holes under axial compression in the North American specification. It is found from the comparison that the ultimate bearing capacity of aluminium alloy members under axial compression calculated using Chinese code is overestimated, while the calculation results obtained from Eurocode are closer to the test results. The existence of holes reduces the load-carrying capacity. The design formular in the North American specification for cold-formed steel members with holes are not suitable for the aluminium alloy RHS columns with holes under axial compression.

Keywords:aluminium alloy; rectangular hollow section; column with hole; axial compression; experimental study

作者簡(jiǎn)介：馮然，博士，教授，Email: r.feng@hfut.edu.cn。