预制装配型钢混凝土梁受剪承载力试验与计算方法研究
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摘要
为了深入研究预制装配型钢混凝土梁的受剪机理并提出可准确预测其受剪承载力的计算公式,该文完成了2个足尺预制装配型钢混凝土梁试件的静力剪切性能试验。通过分析试件的破坏过程、荷载-位移曲线和应变发展规律,对不同剪跨比下试件的破坏形态和承载能力进行了研究。基于变形协调桁架-拱模型和Nakamura模型建立了该种预制装配型钢混凝土梁及普通现浇型钢混凝土梁共同适用的受剪承载力计算模型。通过与75个发生剪切破坏的型钢混凝土梁试验结果对比可得:该文提出的计算方法可较好反映型钢混凝土梁的剪切破坏机理,试验值与计算值吻合良好;规范AISC 360―2010和JGJ 138―2016建议的受剪承载力计算公式较为保守。
To analyze the shear failure mechanism of precast steel reinforced concrete beams and put forward the corresponding calculation method, two full-scale precast steel reinforced concrete beams were tested under static four-point loading. The failure patterns, load-displacement curves and strain development were recorded to investigate the shear mechanism and strength of the specimens of different aspect ratios. On the basis of the test results, a set of calculation formulas based on the compatible truss-arch model and Nakamura model were proposed to predict the shear strength of both precast and conventional steel reinforced concrete beams. The comparison with the existing results of 75 shear-critical steel reinforced concrete beams shows that the proposed method can provide reasonable predictions of the shear strength, and the results calculated by the AISC 360―2010 model and JGJ 138―2016 model are relatively conservative.
To analyze the shear failure mechanism of precast steel reinforced concrete beams and put forward the corresponding calculation method, two full-scale precast steel reinforced concrete beams were tested under static four-point loading. The failure patterns, load-displacement curves and strain development were recorded to investigate the shear mechanism and strength of the specimens of different aspect ratios. On the basis of the test results, a set of calculation formulas based on the compatible truss-arch model and Nakamura model were proposed to predict the shear strength of both precast and conventional steel reinforced concrete beams. The comparison with the existing results of 75 shear-critical steel reinforced concrete beams shows that the proposed method can provide reasonable predictions of the shear strength, and the results calculated by the AISC 360―2010 model and JGJ 138―2016 model are relatively conservative.
引文
[1]薛建阳.组合结构设计原理[M].北京:中国建筑工业出版社,2010:99―101.Xue Jianyang.Composite structure design principle[M].Beijing:China Architecture&Building Press,2010:99―101.(in Chinese)
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[3]程万鹏,宋玉普,王军.预制装配式部分钢骨混凝土框架梁柱中节点抗震性能试验研究[J].大连理工大学学报,2015,55(2):171―178.Cheng Wanpeng,Song Yupu,Wang Jun.Experimental study of seismic performance for interior beam-column joints of precast and discontinuous steel reinforced concrete[J].Journal of Dalian University of Technology,2015,55(2):171―178.(in Chinese)
[4]张雪松,李忠献.低周反复循环荷载作用下装配整体式钢骨混凝土框架节点抗震性能试验研究[J].东南大学学报(自然科学版),2005,35(sup1):1―4.Zhang Xuesong,Li Zhongxian.Seismic behavior of joints of prefabricated steel reinforced concrete integral frame under low cyclic and reciprocal loading[J].Journal of Southeast University(Natural Science Edition),2005,35(sup1):1―4.(in Chinese)
[5]Hong W K,Park S C,Kim J M,et al.Composite beam composed of steel and precast concrete(modularized hybrid system,MHS).Part I:Experimental investigation[J].Structural Design of Tall&Special Buildings,2010,19(3):275―289.
[6]杨勇,于云龙,杨洋,等.部分预制装配型钢混凝土梁受剪性能试验研究[J].建筑结构学报,2017,38(6):53―60.Yang Yong,Yu Yunlong,Yang Yang,et al.Experimental study on shear performance of partially precast steel reinforced concrete beams[J].Journal of Building Structures,2017,38(6):53―60.(in Chinese)
[7]杨勇,薛亦聪,于云龙,等.部分预制装配型钢混凝土梁受弯性能试验研究[J].建筑结构学报,2017,38(9):46―53.Yang Yong,Xue Yicong,Yu Yunlong,et al.Experimental study of partially precast steel reinforced concrete beams under positive bending[J].Journal of Building Structures,2017,38(9):46―53.(in Chinese)
[8]Yang Y,Yu Y,Guo Y,et al.Experimental study on shear performance of partially precast Castellated Steel Reinforced Concrete(CPSRC)beams[J].Steel&Composite Structures,2016,21(2):289―302.
[9]过镇海.钢筋混凝土原理[M].北京:清华大学出版社,2013:246―253.Guo Zhenhai.Principle of reinforced concrete[M].Beijing:Tsinghua University Press,2013:246―253.(in Chinese)
[10]郑山锁,胡义,车顺利,等.型钢高强高性能混凝土梁抗剪承载力试验研究[J].工程力学,2011,28(3):129―135.Zheng Shansuo,Hu Yi,Che Shunli,et al.Experimental study on the shear capacity of SRHSHPC beams[J].Engineering Mechanics,2011,28(3):129―135.(in Chinese)
[11]吴轶,蔡健,杨春,等.基于软化拉-压杆模型内置钢构架型钢混凝土深梁受剪承载力预测[J].工程力学,2009,26(11):134―139.Wu Yi,Cai Jian,Yang Chun,et al.Prediction of shear strength of steel truss reinforced concrete deep beams based on softened strut-and-tie model[J].Engineering Mechanics,2009,26(11):134―139.(in Chinese)
[12]邓明科,马福栋,李勃志,等.基于修正拉-压杆模型的型钢混凝土深梁受剪承载力分析[J].工程力学,2017,34(12):95―103.Deng Mingke,Ma Fudong,Li Bozhi,et al.Analysis on shear capacity of SRC deep beams based on modified strut-and-tie model[J].Engineering Mechanics,2017,34(12):95―103.(in Chinese)
[13]冯鹏,强翰霖,叶列平.材料、构件、结构的“屈服点”定义与讨论[J].工程力学,2017,34(3):36―46.Feng Peng,Qiang Hanlin,Ye Lieping.Discussion and definition on yield points of materials,members and structures[J].Engineering Mechanics,2017,34(3):36―46.(in Chinese)
[14]AISC 360―2010,Specification for structural steel buildings[S].Chicago:American Institute of Steel Construction.
[15]JGJ 138-2016,组合结构设计规范[S].北京:中国建筑工业出版社,2016.JGJ 138-2016,Code for design of composite structures[S].Beijing:China Architecture&Building Press,2016.(in Chinese)
[16]Nakamura S I,Narita N.Bending and shear strengths of partially encased composite I-girders[J].Journal of Constructional Steel Research,2003,59(12):1435―1453.
[17]Pan Z,Li B.Truss-arch model for shear strength of shear-critical reinforced concrete columns[J].Journal of Structural Engineering,2013,139(4):548―560.
[18]Bentz E C,Vecchio F J,Collins M P.Simplified modified compression field theory for calculating shear strength of reinforced concrete elements[J].ACI Structural Journal,2007,103(4):614―624.
[19]Kim J H,Mander J B.Influence of transverse reinforcement on elastic shear stiffness of cracked concrete elements[J].Engineering Structures,2007,29(8):1798―1807.
[20]Ichinose T.A shear design equation for ductile RCmembers[J].Earthquake Engineering&Structural Dynamics,1992,21(3):197―214.
[21]Choi K K,Park H G.Unified shear strength model for reinforced concrete beams-Part II:Verification and simplified method[J].ACI Structural Journal,2007,104(2):153―161.
[22]车顺利.型钢高强高性能混凝土梁的基本性能及设计计算理论研究[D].西安:西安建筑科技大学,2008.Che Shunli.Research on basic behaviors and design theory of steel reinforced high strength and high performance concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2008.(in Chinese)
[23]王秀振.型钢再生混凝土梁受剪性能试验研究[D].西安:西安建筑科技大学,2011.Wang Xiuzhen.Experimental study on shear behavior of steel reinforced recycled concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2011.(in Chinese)
[24]王朝霞.型钢混凝土梁的裂缝和变形的研究[D].西安:西安建筑科技大学,2006.Wang Zhaoxia.Study on cracks and deflections of steel reinforced concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2006.(in Chinese)
[25]邵永健.型钢轻骨料混凝土梁的力学性能及设计方法的试验研究[D].西安:西安建筑科技大学,2007.Shao Yongjian.Experimental study on mechanical performance and design method of steel reinforced lightweight aggregate concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2007.(in Chinese)
[26]中国建筑科学研究院.混凝土结构研究报告选集[M].北京:中国建筑工业出版社,1994:478―489.China Academy of Building Research.Research report in reinforced concrete structure[M].Beijing:China Architecture&Building Press,1994:478―489.(in Chinese)
[2]程万鹏,宋玉普,张秀娟.预制装配式部分钢骨混凝土框架梁柱节点承载能力的试验研究[J].大连交通大学学报,2014,35(4):52―55.Cheng Wanpeng,Song Yupu,Zhang Xiujuan.Experiment study of bearing capacity for beam and column joints of precast and discontinuous steel reinforced concrete[J].Journal of Dalian Jiaotong University,2014,35(4):52―55.(in Chinese))
[3]程万鹏,宋玉普,王军.预制装配式部分钢骨混凝土框架梁柱中节点抗震性能试验研究[J].大连理工大学学报,2015,55(2):171―178.Cheng Wanpeng,Song Yupu,Wang Jun.Experimental study of seismic performance for interior beam-column joints of precast and discontinuous steel reinforced concrete[J].Journal of Dalian University of Technology,2015,55(2):171―178.(in Chinese)
[4]张雪松,李忠献.低周反复循环荷载作用下装配整体式钢骨混凝土框架节点抗震性能试验研究[J].东南大学学报(自然科学版),2005,35(sup1):1―4.Zhang Xuesong,Li Zhongxian.Seismic behavior of joints of prefabricated steel reinforced concrete integral frame under low cyclic and reciprocal loading[J].Journal of Southeast University(Natural Science Edition),2005,35(sup1):1―4.(in Chinese)
[5]Hong W K,Park S C,Kim J M,et al.Composite beam composed of steel and precast concrete(modularized hybrid system,MHS).Part I:Experimental investigation[J].Structural Design of Tall&Special Buildings,2010,19(3):275―289.
[6]杨勇,于云龙,杨洋,等.部分预制装配型钢混凝土梁受剪性能试验研究[J].建筑结构学报,2017,38(6):53―60.Yang Yong,Yu Yunlong,Yang Yang,et al.Experimental study on shear performance of partially precast steel reinforced concrete beams[J].Journal of Building Structures,2017,38(6):53―60.(in Chinese)
[7]杨勇,薛亦聪,于云龙,等.部分预制装配型钢混凝土梁受弯性能试验研究[J].建筑结构学报,2017,38(9):46―53.Yang Yong,Xue Yicong,Yu Yunlong,et al.Experimental study of partially precast steel reinforced concrete beams under positive bending[J].Journal of Building Structures,2017,38(9):46―53.(in Chinese)
[8]Yang Y,Yu Y,Guo Y,et al.Experimental study on shear performance of partially precast Castellated Steel Reinforced Concrete(CPSRC)beams[J].Steel&Composite Structures,2016,21(2):289―302.
[9]过镇海.钢筋混凝土原理[M].北京:清华大学出版社,2013:246―253.Guo Zhenhai.Principle of reinforced concrete[M].Beijing:Tsinghua University Press,2013:246―253.(in Chinese)
[10]郑山锁,胡义,车顺利,等.型钢高强高性能混凝土梁抗剪承载力试验研究[J].工程力学,2011,28(3):129―135.Zheng Shansuo,Hu Yi,Che Shunli,et al.Experimental study on the shear capacity of SRHSHPC beams[J].Engineering Mechanics,2011,28(3):129―135.(in Chinese)
[11]吴轶,蔡健,杨春,等.基于软化拉-压杆模型内置钢构架型钢混凝土深梁受剪承载力预测[J].工程力学,2009,26(11):134―139.Wu Yi,Cai Jian,Yang Chun,et al.Prediction of shear strength of steel truss reinforced concrete deep beams based on softened strut-and-tie model[J].Engineering Mechanics,2009,26(11):134―139.(in Chinese)
[12]邓明科,马福栋,李勃志,等.基于修正拉-压杆模型的型钢混凝土深梁受剪承载力分析[J].工程力学,2017,34(12):95―103.Deng Mingke,Ma Fudong,Li Bozhi,et al.Analysis on shear capacity of SRC deep beams based on modified strut-and-tie model[J].Engineering Mechanics,2017,34(12):95―103.(in Chinese)
[13]冯鹏,强翰霖,叶列平.材料、构件、结构的“屈服点”定义与讨论[J].工程力学,2017,34(3):36―46.Feng Peng,Qiang Hanlin,Ye Lieping.Discussion and definition on yield points of materials,members and structures[J].Engineering Mechanics,2017,34(3):36―46.(in Chinese)
[14]AISC 360―2010,Specification for structural steel buildings[S].Chicago:American Institute of Steel Construction.
[15]JGJ 138-2016,组合结构设计规范[S].北京:中国建筑工业出版社,2016.JGJ 138-2016,Code for design of composite structures[S].Beijing:China Architecture&Building Press,2016.(in Chinese)
[16]Nakamura S I,Narita N.Bending and shear strengths of partially encased composite I-girders[J].Journal of Constructional Steel Research,2003,59(12):1435―1453.
[17]Pan Z,Li B.Truss-arch model for shear strength of shear-critical reinforced concrete columns[J].Journal of Structural Engineering,2013,139(4):548―560.
[18]Bentz E C,Vecchio F J,Collins M P.Simplified modified compression field theory for calculating shear strength of reinforced concrete elements[J].ACI Structural Journal,2007,103(4):614―624.
[19]Kim J H,Mander J B.Influence of transverse reinforcement on elastic shear stiffness of cracked concrete elements[J].Engineering Structures,2007,29(8):1798―1807.
[20]Ichinose T.A shear design equation for ductile RCmembers[J].Earthquake Engineering&Structural Dynamics,1992,21(3):197―214.
[21]Choi K K,Park H G.Unified shear strength model for reinforced concrete beams-Part II:Verification and simplified method[J].ACI Structural Journal,2007,104(2):153―161.
[22]车顺利.型钢高强高性能混凝土梁的基本性能及设计计算理论研究[D].西安:西安建筑科技大学,2008.Che Shunli.Research on basic behaviors and design theory of steel reinforced high strength and high performance concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2008.(in Chinese)
[23]王秀振.型钢再生混凝土梁受剪性能试验研究[D].西安:西安建筑科技大学,2011.Wang Xiuzhen.Experimental study on shear behavior of steel reinforced recycled concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2011.(in Chinese)
[24]王朝霞.型钢混凝土梁的裂缝和变形的研究[D].西安:西安建筑科技大学,2006.Wang Zhaoxia.Study on cracks and deflections of steel reinforced concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2006.(in Chinese)
[25]邵永健.型钢轻骨料混凝土梁的力学性能及设计方法的试验研究[D].西安:西安建筑科技大学,2007.Shao Yongjian.Experimental study on mechanical performance and design method of steel reinforced lightweight aggregate concrete beams[D].Xi’an:Xi’an University of Architecture and Technology,2007.(in Chinese)
[26]中国建筑科学研究院.混凝土结构研究报告选集[M].北京:中国建筑工业出版社,1994:478―489.China Academy of Building Research.Research report in reinforced concrete structure[M].Beijing:China Architecture&Building Press,1994:478―489.(in Chinese)