钢骨-钢管混凝土柱抗震性能试验研究
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摘要
了解钢骨-钢管混凝土柱在低周往复荷载作用下的力学性能,为钢骨-钢管混凝土柱的推广应用提供依据。本文对5根构件开展拟静力试验并对试验结果进行了分析,得到不同轴压比和不同含骨率下的荷载-位移滞回曲线,并分析比较了轴压比和含钢率对构件耗能及延性的影响。结果表明,钢骨-钢管混凝土柱抗震性能良好,含骨率的增加和轴压比的减小都有利于试件承载力的提高;随着试验位移增大,试件累积耗能和等效粘滞阻尼系数都增大,表明试件耗能能力不断增大,如此就能有效地抵御地震作用,而且试件轴压比越小,含骨率越大试件的耗能能力越强;含骨率的增大可以减缓试件的刚度退化,轴压比的减小对减缓刚度退化影响显著;即使在高轴压比下钢骨-钢管混凝土柱仍能满足规范对抗震极限位移角的要求,试件延性系数随含骨率增大而增大,随轴压比的增大而减小。
To understand mechanical properties of circular steel tube composite columns filled with steel reinforced concrete under cyclic loading,the tests were conducted,which provide basis for the application of these columns.Five circular steel tube composite columns filled with steel reinforced concrete under horizontal cyclic loading are tested,and the hesteretic curves of the columns with different steel ratios under different compression ratios are obtained.The effects of different axial compression ratios and the ductility and energy dissipation capacity are analysed and compared.The results show that circular steel tube composite columns filled with steel reinforced concrete behave very well.Either increasing the steel ratio or reducing the axial compression ratio is favorable to improve the element bearing capacity.With the increasing of displacement,energy dissipation capacity and equivalent viscous damping ratio are increased,the energy dissipation capacity is growing,which can effectively resist earthquakes.It is also found that the energy dissipation capacity is better with the reducing of the axial compression ratio and the increasing of the steel ratio,and either increasing the steel ratio or reducing the axial compression ratio is favorable to delay the stiffness degradation.The circular steel tube composite column filled with steel reinforced concrete can still meet the standard requirements on limiting displacement drift even under the high axial compression ratio.The ductility is increasing with the increment of steel ratio,but decreasing with the increment of axial compression ratio.
To understand mechanical properties of circular steel tube composite columns filled with steel reinforced concrete under cyclic loading,the tests were conducted,which provide basis for the application of these columns.Five circular steel tube composite columns filled with steel reinforced concrete under horizontal cyclic loading are tested,and the hesteretic curves of the columns with different steel ratios under different compression ratios are obtained.The effects of different axial compression ratios and the ductility and energy dissipation capacity are analysed and compared.The results show that circular steel tube composite columns filled with steel reinforced concrete behave very well.Either increasing the steel ratio or reducing the axial compression ratio is favorable to improve the element bearing capacity.With the increasing of displacement,energy dissipation capacity and equivalent viscous damping ratio are increased,the energy dissipation capacity is growing,which can effectively resist earthquakes.It is also found that the energy dissipation capacity is better with the reducing of the axial compression ratio and the increasing of the steel ratio,and either increasing the steel ratio or reducing the axial compression ratio is favorable to delay the stiffness degradation.The circular steel tube composite column filled with steel reinforced concrete can still meet the standard requirements on limiting displacement drift even under the high axial compression ratio.The ductility is increasing with the increment of steel ratio,but decreasing with the increment of axial compression ratio.
引文
[1]徐亚丰,赵敬义.钢骨-钢管混凝土柱抗震性能试验研究[D].沈阳建筑大学,硕士论文,2009.
[2]聂建国,赵洁,柏宇,等.钢管混凝土核心柱轴压极限承载力[J].清华大学学报(自然科学版),2005,45(9):1153-1156.
[3]聂建国,柏宇,李盛勇,等.钢管混凝土核心柱轴压组合性能研究[J].土木工程学报,2005,38(9):9-13.
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[6]徐亚丰,赫芳,蔡洪洲,等.钢骨-钢管混凝土柱正截面承载力分析[J].沈阳建筑大学学报(自然科学版),2007,23(1):33-36.
[7]Xu Yafeng,He Fang,Xiang Changyan.The Conceptual Design and Innovation of the Structure[J].8thInternational Conference on Steel-Concrete Composite And Hybrid Structures,12nd-14ndAugust2006,Harbin,China,512-517.
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[9]徐亚丰,姜桂兰,向常艳,等.轴心受压下钢骨-钢管混凝土组合短柱承载力研究[J].沈阳建筑大学学报(自然科学版),2005,21(6):640-643.
[10]徐亚丰,姜桂兰,赫芳,等.钢管-钢骨混凝土组合柱实验研究[J].沈阳建筑大学学报(自然科版),2006,22(2):228-231.
[11]韩林海,陶忠,游经团.矩形钢管混凝土压弯构件滞回性能研究[D].福州大学,硕士论文,2003.
[12]Park R,et al.Ductility of Square-Confined Concrete Columns[J].Journal of the Structural Division,1982,108(4):929-950.
[13]张柯,岳清瑞,叶列平.碳纤维布加固钢筋混凝土柱滞回耗能分析及目标延性系数确定[J].工业建筑,2001,31(6):5-8.
[14]Xinin Lu,Yong Yu.Experi mental study on the seismic behavior in the connection between CFRT column and steel beam[J].Structural Engineering and Mechanics,2000,9(4):365-374.
[15]Amit H.Varma,James M.Ricles,Richard Sause,et al.Seismic behavior and modeling of high-strength composite concrete-filled steel tube(CFT)[J].Journal of Constructional Steel Research,2002,58(5):725-758.
[16]OKAMOTO T,MAENO T,HISATOKU T,et al.A design and construction practice of rectangular steel tube columns infilled weth ultra-high strength concrete cast by centrifugal force[C].Proceedings of the Third Internationtional Conference on Steel-Concrete Composite Structures,1991:237-242.
[17]NAKANISHI K,KITADA T,NAKAI II.Experi mental study on deterioration of ulti mate strength and ductility of damage concrete filled steel box columns[C].Proceedings of the4th ASCCS International Conference on Steel-Concrete Composite Strutures,1994:127-130.
[18]SUN Y P,SAKI HO K.Method of i mproving the ductility of RC columns under high axial load by using steel tube[C].Proceedings of4th ASCCSInternational Conference on Steel-Concrete Composite Structures,1994:139-142.
[19]MATSLTI C,KEIRA K,KAWANO A,et al.Development of concrete filled steel tubular structures with inner ribs[C].Prcoceedings of the Third International Conference on Steel-Concrete Composite Structures,1991:201-206.
[20]建筑抗震试验方法规程(JGJ101-96)[S].
[21]Pedro R Munoz,Chen-Tzu Thomas.Biaxially loaded concrete encased,composite columns:design equation[J].Journal of Structural Engineering,1997,123(12):1576-1585.
[22]沈在康.混凝土结构试验方法新标准应用评讲[M].北京:中国建筑工业出版社,1993.
[23]建筑抗震设计规范(GB50011-2001)[S].
[24]高强混凝土结构技术规程(CECS104:99)[S].
[25]关萍,王清湘,赵大洲.钢骨-钢管混凝土组合柱延性的试验研究[J].地震工程与工程振动,2003,23(1):57-60.
[2]聂建国,赵洁,柏宇,等.钢管混凝土核心柱轴压极限承载力[J].清华大学学报(自然科学版),2005,45(9):1153-1156.
[3]聂建国,柏宇,李盛勇,等.钢管混凝土核心柱轴压组合性能研究[J].土木工程学报,2005,38(9):9-13.
[4]徐亚丰,向常艳,赫芳.轴心荷载作用下的钢骨-钢管混凝土柱实验全过程分析[R].第七届全国现代结构工程学术会议,2007.
[5]徐亚丰,向常艳,李达,等.钢骨-钢管混凝土轴压短柱模拟实验分析[J].沈阳建筑大学学报(自然科学版),2007,23(5):747-750.
[6]徐亚丰,赫芳,蔡洪洲,等.钢骨-钢管混凝土柱正截面承载力分析[J].沈阳建筑大学学报(自然科学版),2007,23(1):33-36.
[7]Xu Yafeng,He Fang,Xiang Changyan.The Conceptual Design and Innovation of the Structure[J].8thInternational Conference on Steel-Concrete Composite And Hybrid Structures,12nd-14ndAugust2006,Harbin,China,512-517.
[8]徐亚丰,赫芳,向常艳,等.结构的概念设计与创新[J].沈阳建筑大学学报(自然科学版),2006,22(1):30-34.
[9]徐亚丰,姜桂兰,向常艳,等.轴心受压下钢骨-钢管混凝土组合短柱承载力研究[J].沈阳建筑大学学报(自然科学版),2005,21(6):640-643.
[10]徐亚丰,姜桂兰,赫芳,等.钢管-钢骨混凝土组合柱实验研究[J].沈阳建筑大学学报(自然科版),2006,22(2):228-231.
[11]韩林海,陶忠,游经团.矩形钢管混凝土压弯构件滞回性能研究[D].福州大学,硕士论文,2003.
[12]Park R,et al.Ductility of Square-Confined Concrete Columns[J].Journal of the Structural Division,1982,108(4):929-950.
[13]张柯,岳清瑞,叶列平.碳纤维布加固钢筋混凝土柱滞回耗能分析及目标延性系数确定[J].工业建筑,2001,31(6):5-8.
[14]Xinin Lu,Yong Yu.Experi mental study on the seismic behavior in the connection between CFRT column and steel beam[J].Structural Engineering and Mechanics,2000,9(4):365-374.
[15]Amit H.Varma,James M.Ricles,Richard Sause,et al.Seismic behavior and modeling of high-strength composite concrete-filled steel tube(CFT)[J].Journal of Constructional Steel Research,2002,58(5):725-758.
[16]OKAMOTO T,MAENO T,HISATOKU T,et al.A design and construction practice of rectangular steel tube columns infilled weth ultra-high strength concrete cast by centrifugal force[C].Proceedings of the Third Internationtional Conference on Steel-Concrete Composite Structures,1991:237-242.
[17]NAKANISHI K,KITADA T,NAKAI II.Experi mental study on deterioration of ulti mate strength and ductility of damage concrete filled steel box columns[C].Proceedings of the4th ASCCS International Conference on Steel-Concrete Composite Strutures,1994:127-130.
[18]SUN Y P,SAKI HO K.Method of i mproving the ductility of RC columns under high axial load by using steel tube[C].Proceedings of4th ASCCSInternational Conference on Steel-Concrete Composite Structures,1994:139-142.
[19]MATSLTI C,KEIRA K,KAWANO A,et al.Development of concrete filled steel tubular structures with inner ribs[C].Prcoceedings of the Third International Conference on Steel-Concrete Composite Structures,1991:201-206.
[20]建筑抗震试验方法规程(JGJ101-96)[S].
[21]Pedro R Munoz,Chen-Tzu Thomas.Biaxially loaded concrete encased,composite columns:design equation[J].Journal of Structural Engineering,1997,123(12):1576-1585.
[22]沈在康.混凝土结构试验方法新标准应用评讲[M].北京:中国建筑工业出版社,1993.
[23]建筑抗震设计规范(GB50011-2001)[S].
[24]高强混凝土结构技术规程(CECS104:99)[S].
[25]关萍,王清湘,赵大洲.钢骨-钢管混凝土组合柱延性的试验研究[J].地震工程与工程振动,2003,23(1):57-60.
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