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(1 山西大學(xué)土木工程系, 太原 030013; 2 太原理工大學(xué)土木工程學(xué)院, 太原 030024)

摘要: 為研究軸壓作用下方鋼管-鋼骨混凝土短柱的力學(xué)性能,基于相關(guān)規(guī)范和經(jīng)典理論,對(duì) 29 組不同參數(shù)的鋼管-鋼骨混凝土短柱軸心受壓試驗(yàn)數(shù)據(jù)進(jìn)行對(duì)比分析,研究最為適用于軸心受壓鋼管-鋼骨混凝土短柱的軸壓承載力計(jì)算公式。 在此基礎(chǔ)上采用有限元軟件 ABAQUS 建立鋼管-鋼骨混凝土軸壓短柱模型,對(duì) 12 組已有試驗(yàn)數(shù)據(jù)進(jìn)行驗(yàn)證,從而補(bǔ)充 9 組較大截面尺寸的方鋼管-鋼骨混凝土短柱軸壓計(jì)算結(jié)果,并與理論計(jì)算結(jié)果進(jìn)行對(duì)比。 最后對(duì)《組合結(jié)構(gòu)設(shè)計(jì)規(guī)范》(JGJ 138—2016)中基于疊加原理的方鋼管-鋼骨混凝土短柱軸壓承載力計(jì)算公式進(jìn)行了修正,用有限元數(shù)據(jù)和試驗(yàn)數(shù)據(jù)進(jìn)行了驗(yàn)證,修正后的理論計(jì)算結(jié)果與模擬值和試驗(yàn)值吻合良好,為其在實(shí)際工程中的設(shè)計(jì)提供可靠參考。

關(guān)鍵詞: 方鋼管-鋼骨混凝土柱; 軸壓承載力; 理論計(jì)算; 有限元分析

中圖分類(lèi)號(hào):TU398. 9 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)24-0064-07

DOI:10. 19701 / j. jzjg. 20201494

Study on axial bearing capacity formulas of square steel tube filled with steel-reinforced concrete short columns

ZHU Xiang1, KANG Miao2, WANG Rui2, YIN Yao2

(1 Department of Civil Engineering, Shanxi University, Taiyuan 030013, China; 2 College of civil engineering,Taiyuan University of Technology, Taiyuan 030024, China)

Abstract:To study the behaviors of square steel tube filled with steel-reinforced columns under axial compression, 29groups of experimental data of such type of short columns under axial compression with different parameters were comparedand analyzed based on relevant codes and classical theories, researching the most suitable axial-bearing capacity formula forsteel tube filled with steel-reinforced columns under axial compression. Models of steel tube filled with steel-reinforcedcolumns under axial compression were established by using finite element software ABAQUS, 12 groups of existingexperimental data were verified, to provide the calculation results of 9 groups of square steel tube filled with steel-reinforcedcolumns with larger sizes, which were compared with theoretical results. Finally, the formula based on Code for design ofcomposite structures ( JGJ 138—2016) for calculating the axial bearing capacity of square steel tube filled with steelreinforced short columns were modified, which was verified by finite element and experimental data. The results of themodified theoretical calculation are in good agreement with the simulated and experimental results, which provide reliablereferences for its design in practical engineering.

Keywords:square steel tube filled with steel-reinforced concrete columns; axial bearing capacity; theoretical calculation;finite element analysis

∗國(guó)家自然科學(xué)基金(51578274),山西省科技廳應(yīng)用基礎(chǔ)研究計(jì)劃項(xiàng)目(202103021223022),山西省高等學(xué)?？萍紕?chuàng)新項(xiàng)目(2020L0052),山西省科技廳重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(社會(huì)發(fā)展方向 201903D311007)。

第一作者:朱翔,博士,副教授,主要從事結(jié)構(gòu)抗沖擊、抗連續(xù)倒塌及抗震研究,Emai:zhuxiang@ sxu. edu. cn。

[引用本文] 朱翔,康苗,王蕊,等. 方鋼管-鋼骨混凝土短柱軸壓承載力公式研究[ J]. 建筑結(jié)構(gòu),2022,52(24):64-70. ZHU Xiang,KANG Miao,WANG Rui,et al. Study on axial bearing capacity formulas of square steel tube filled withsteel-reinforced concrete short columns under axial compression[J]. Building Structure,2022,52(24):64-70.