实腹式配钢的型钢混凝土十字形异形柱的抗震性能
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摘要
为研究实腹式配钢的型钢混凝土(SSRC)十字形异形柱的抗震性能,对4根不同轴压比、配钢率和加载方向的SSRC十字形异形柱进行了低周反复加载试验,记录了试件各阶段的开裂、变形及破坏特点,得到了其荷载-位移滞回曲线、荷载-位移骨架曲线,以及刚度退化、强度衰减、位移延性、耗能能力等力学性能.根据试验结果,对比分析了轴压比、配钢率和加载方向对SSRC十字形异形柱抗震性能的影响.结果表明:剪跨比较大时,试件发生弯曲破坏;SSRC十字形异形柱具有良好的延性、塑性变形能力和耗能能力;与空腹式配钢的型钢混凝土十字形异形柱相比,SSRC十字形异形柱抗震性能良好.
In order to investigate the seismic behaviors of solid-web steel-reinforced-concrete( SSRC) cross-shaped columns,four column specimens with various axial compression ratios,steel ratios and loading directions were tested by low-cycle reversed loading experiments,and the crack,deformation,failure characteristics of these columns were recorded. Then,the load-displacement hysteretic curves and skeleton curves of the four columns were obtained,and their mechanical properties,namely,stiffness and strength degradation,displacement ductility and energy dissipation capacity,were analyzed. Finally,according to the experimental results,the effects of axial compression ratios,steel ratios and loading directions on the seismic behaviors of SSRC cross-shaped columns were discussed. The results indicate that( 1) the failure mode of the specimens with large shear span ratio is a bending failure; and( 2) SSRC cross-shaped columns have favorable ductility,plastic deformation capacity and energy dissipation capacity. In addition,as compared with lattice-style steel reinforced concrete( LSRC) cross-shaped columns,SSRC cross-shaped columns show better seismic behavior.
In order to investigate the seismic behaviors of solid-web steel-reinforced-concrete( SSRC) cross-shaped columns,four column specimens with various axial compression ratios,steel ratios and loading directions were tested by low-cycle reversed loading experiments,and the crack,deformation,failure characteristics of these columns were recorded. Then,the load-displacement hysteretic curves and skeleton curves of the four columns were obtained,and their mechanical properties,namely,stiffness and strength degradation,displacement ductility and energy dissipation capacity,were analyzed. Finally,according to the experimental results,the effects of axial compression ratios,steel ratios and loading directions on the seismic behaviors of SSRC cross-shaped columns were discussed. The results indicate that( 1) the failure mode of the specimens with large shear span ratio is a bending failure; and( 2) SSRC cross-shaped columns have favorable ductility,plastic deformation capacity and energy dissipation capacity. In addition,as compared with lattice-style steel reinforced concrete( LSRC) cross-shaped columns,SSRC cross-shaped columns show better seismic behavior.
引文
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[12]王斌,郑山锁,国贤发,等.循环荷载作用下型钢高强高性能混凝土框架柱受力性能试验研究[J].建筑结构学报,2011,32(3):117-126.Wang Bin,Zheng Shan-suo,Guo Xian-fa,et al.Experimental research on mechanical behavior of SRHSHPC frame columns under cyclic loading[J].Journal of Building Structures,2011,32(3):117-126.
[13]薛建阳,刘义,赵鸿铁,等.型钢混凝土异形柱框架节点抗震性能试验研究[J].建筑结构学报,2009,30(4):69-77.Xue Jian-yang,Liu Yi,Zhao Hong-tie,et al.Experimental study on seismic behavior of steel reinforced concrete special-shaped column-beam joints[J].Journal of Building Structures,2009,30(4):69-77.
[2]柯晓军,陈宗平,薛建阳,等.反复荷载下型钢混凝土异形柱粘结性能研究[J].工程力学,2013,30(2):211-218.Ke Xiao-jun,Chen Zong-ping,Xue Jian-yang et al.Study on bond slip behavior of SRC special-shaped columns under cyclic reversed loading[J].Engineering Mechanics,2013,30(2):211-218.
[3]徐亚丰,宋宝峰,李钢,等.十字形钢骨混凝土异形柱轴心受压承载力研究[J].沈阳建筑大学学报:自然科学版,2007,23(6):910-913.Xu Ya-feng,Song Bao-feng,Li Gang,et al.Testing of axial pressure bearing capacity of cross-shaped steel reinforced concrete columns[J].Journal of Shenyang Jianzhu University:Natural Science Edition,2007,23(6):910-913.
[4]徐亚丰,刁晓征,郭建,等.十字形钢骨混凝土异形柱双向偏心受压试验[J].沈阳建筑大学学报:自然科学版,2009,25(1):100-105.Xu Ya-feng,Diao Xiao-zheng,Guo Jian,et al.Experimental study on the biaxial eccentric pressure bearing capacity of cross-shaped steel reinforced concrete columns[J].Journal of Shenyang Jianzhu University:Natural Science Edition,2009,25(1):100-105.
[5]刁晓征.十字形钢骨混凝土异形柱受力性能研究[D].沈阳:沈阳建筑大学土木工程学院,2009.
[6]刘祖强,薛建阳,葛鸿鹏,等.实腹式型钢混凝土异形柱框架刚度与承载力试验研究[J].工程力学,2013,30(10):86-92.Liu Zu-qiang,Xue Jian-yang,Ge Hong-peng,et al.Experimental study on stiffness and loading capacity of solid steel reinforced concrete frame with special-shaped columns[J].Engineering Mechanics,2013,30(10):86-92.
[7]刘祖强,薛建阳,倪茂明,等.实腹式型钢混凝土异形柱边框架拟静力试验及有限元分析[J].建筑结构学报,2012,33(8):23-30.Liu Zu-qiang,Xue Jian-yang,Ni Mao-ming,et al.Quasistatic test and finite element analysis on solid-web steel reinforced concrete exterior frame with special-shaped columns[J].Journal of Building Structures,2012,33(8):23-30.
[8]薛建阳,刘祖强,葛鸿鹏,等.实腹式型钢混凝土异形柱中框架抗震性能试验研究[J].建筑结构学报,2011,32(11):82-88.Xue Jian-yang,Liu Zu-qiang,Ge Hong-peng,et al.Seismic behavior of solid steel reinforced concrete middle frame with special-shaped columns[J].Journal of Building Structures,2011,32(11):82-88.
[9]陈宗平,薛建阳,赵鸿铁,等.型钢混凝土异形柱抗震性能试验研究[J].建筑结构学报,2007,28(3):53-61.Chen Zong-ping,Xue Jian-yang,Zhao Hong-tie,et al.Experimental study on seismic behavior of steel reinforced concrete special-shaped columns[J].Journal of Building Structures,2007,28(3):53-61.
[10]刘义,赵鸿铁,薛建阳,等.型钢混凝土异形柱恢复力特性的试验研究[J].地震工程与工程振动,2009,29(2):86-91.Liu Yi,Zhao Hong-tie,Xue Jian-yang,et al.Experimental research on restoring force model of SRC specialshaped columns[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(2):86-91.
[11]雷真,周德源,王继兵.玄武岩纤维增强材料加固砌体砖墙的抗震性能[J].华南理工大学学报:自然科学版,2013,41(3):43-49.Lei Zhen,Zhou De-yuan,Wang Ji-bing.Seismic performance of masonry walls strengthened with basalt fiberreinforced polymer[J].Journal of South China University of Technology:Natural Science Edition,2013,41(3):43-49.
[12]王斌,郑山锁,国贤发,等.循环荷载作用下型钢高强高性能混凝土框架柱受力性能试验研究[J].建筑结构学报,2011,32(3):117-126.Wang Bin,Zheng Shan-suo,Guo Xian-fa,et al.Experimental research on mechanical behavior of SRHSHPC frame columns under cyclic loading[J].Journal of Building Structures,2011,32(3):117-126.
[13]薛建阳,刘义,赵鸿铁,等.型钢混凝土异形柱框架节点抗震性能试验研究[J].建筑结构学报,2009,30(4):69-77.Xue Jian-yang,Liu Yi,Zhao Hong-tie,et al.Experimental study on seismic behavior of steel reinforced concrete special-shaped column-beam joints[J].Journal of Building Structures,2009,30(4):69-77.
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