H型钢连接方钢管混凝土组合异形柱轴压性能试验研究
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摘要
为改善现有的单连接板和双连接板方钢管混凝土组合异形柱加工制作中存在的不便之处,提出一种基于H型钢连接的钢管混凝土组合异形柱构造形式;为研究其在轴压荷载作用下的承载力、延性等力学性能指标,进行H型钢连接钢管混凝土组合异形柱的轴压试验及数值模拟分析.在验证有限元模型正确性的基础上完成了其与单钢板、双钢板连接钢管混凝土组合异形柱承载力对比分析.结果表明:H型钢连接板对各单肢柱的约束作用较强,保证了异形柱的整体性,各单肢可以更好地协同变形;与单钢板、双钢板连接组合异形柱相比,H型钢连接组合异形柱具有较好的力学性能,其承载力较双钢板提高了10%左右.
To address existing inefficiencies in the processing and manufacturing of special-shaped columns composed of square concrete-filled steel tubular(SCFT)columns with single and double connection plates,we propose the use of SCFT columns connected by H-shaped steel. To study the bearing capacity,ductility,and other mechanical properties of these columns under axial compression load,we conducted an axial compression experiment on the proposed SCFT columns connected by H-shaped steel,as well as a numerical simulation analysis. To verify the accuracy of the finite element model,we performed a comparative analysis of the bearing capacity of SCFT columns connected by single and double steel plates. The results show that each single-leg column of SCFT columns connected by H-shaped steel has a strong constraint that ensures its integrity,such that each single leg can achieve better collaborative deformation. Compared with SCFT columns connected by single or double steel plates,SCFT columns connected by H-shaped steel have better mechanical properties and their bearing capacity is about 10% higher than that of SCFT columns connected by double steel plates.
To address existing inefficiencies in the processing and manufacturing of special-shaped columns composed of square concrete-filled steel tubular(SCFT)columns with single and double connection plates,we propose the use of SCFT columns connected by H-shaped steel. To study the bearing capacity,ductility,and other mechanical properties of these columns under axial compression load,we conducted an axial compression experiment on the proposed SCFT columns connected by H-shaped steel,as well as a numerical simulation analysis. To verify the accuracy of the finite element model,we performed a comparative analysis of the bearing capacity of SCFT columns connected by single and double steel plates. The results show that each single-leg column of SCFT columns connected by H-shaped steel has a strong constraint that ensures its integrity,such that each single leg can achieve better collaborative deformation. Compared with SCFT columns connected by single or double steel plates,SCFT columns connected by H-shaped steel have better mechanical properties and their bearing capacity is about 10% higher than that of SCFT columns connected by double steel plates.
引文
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[2]陈志华,荣彬.L形方钢管混凝土组合异形柱的轴压稳定性研究[J].建筑结构,2009,39(6):39-42,33.Chen Zhihua,Rong Bin.Research on axial compression stability of L-shaped column composed of concrete-filled square steel tubes[J].Building Structure,2009,39(6):39-42,33(in Chinese).
[3]陈志华.钢结构和组合结构异形柱[J].钢结构,2006,21(2):27-29,87.Chen Zhihua.New-type special-shaped column by steel structure and composite structure[J].Steel Construction,2006,21(2):27-29,87(in Chinese).
[4]张广泰,李凤彬,荣彬.L形方钢管混凝土组合异形柱单向压弯稳定性研究[J].建筑结构,2015,45(8):69-73.Zhang Guangtai,Li Fengbin,Rong Bin.Research on unidirectional compression-bending stability of L-shaped specially-shaped column composed of concrete-filled square steel tube[J].Building Structure,2015,45(8):69-73(in Chinese).
[5]荣彬,陈志华,周婷.L形方钢管混凝土组合异形短柱的轴压强度研究[J].工业建筑,2009,39(11):104-107,99.Rong Bin,Chen Zhihua,Zhou Ting.Research on axial compression strength of L-shaped short column composed of concrete-filled square steel tubes[J].Industrial Construction,2009,39(11):104-107,99(in Chinese).
[6]陈志华,李振宇,荣彬,等.十字形截面方钢管混凝土组合异形柱轴压承载力试验[J].天津大学学报,2006,39(11):1275-1282.Chen Zhihua,Li Zhenyu,Rong Bin,et al.Experiment of axial compression bearing capacity for crisscross section special-shaped column composed of concrete-filled square steel tubes[J].Journal of Tianjin University,2006,39(11):1275-1282(in Chinese).
[7]周婷,陈志华,荣彬.L形方钢管混凝土异形柱轴压受力性能及构造形式改进[C]//第十届全国现代结构工程学术研讨会论文集.上海,2010:1471-1476.Zhou Ting,Chen Zhihua,Rong Bin.Improvement of axial loading behavior and construction form of L-shaped concrete filled square steel tubular special-shaped columns[C]//Papers of the 10th National Symposium on Modern Structural Engineering.Shanghai,China,2010:1471-1476(in Chinese).
[8]周婷,胥民扬,陈志华,等.L形钢板连接式方钢管混凝土组合异形柱双向压弯稳定性试验研究[J].建筑结构,2018,48(6):82-86.Zhou Ting,Xu Minyang,Chen Zhihua,et al.Experimental study on biaxial eccentric compression stability of L-shaped special-shaped columns composed of concretefilled square steel tube connected by steel plates[J].Building Structure,2018,48(6):82-86(in Chinese).
[9]胥民扬,陈志华,周婷,等.L形无孔钢板连接式方钢管混凝土组合异形柱长柱轴心受压极限承载力试验研究[J].工业建筑,2016,46(7):178-182,117.Xu Minyang,Chen Zhihua,Zhou Ting,et al.Experimental investigation of the axial compression bearing capacity of slender L-shaped column composed of concrete-filled steel tubes connected by steel plates[J].Industrial Construction,2016,46(7):178-182,117(in Chinese).
[10]陈志华,于敬海,曹爽秋,等.一种基于高频焊H型钢的方钢管混凝土组合异形柱:CN107905451A[P].2018-04-13.Chen Zhihua,Yu Jinghai,Cao Shuangqiu,et al.ASquare Concrete Filled Steel Tubular Composite SpecialShaped Column Based on High Frequency Welded H-Shaped Steel:CN107905451A[P].2018-04-13(in Chinese).
[11]韩林海.钢管混凝土结构[M].北京:科学出版社,2004.Han Linhai.Encased Structures[M].Beijing:Science Press,2004(in Chinese).