部分预制装配型钢混凝土构件斜截面抗剪承载能力试验研究
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摘要
为建立部分预制装配型钢混凝土(PPSRC)构件的抗剪承载力计算公式,该文设计并进行了7个试件的静力加载试验,考虑了剪跨比、现浇混凝土强度和截面形式三个变化参数对PPSRC构件抗剪性能的影响。通过分析试件的破坏过程、剪力-位移曲线和剪力-应变曲线,对PPSRC构件的破坏机理和抗剪承载力进行研究。基于试验结果,分析了预制装配型钢混凝土构件抗剪承载力的主要影响因素,依据叠加原理提出了部分预制装配型钢混凝土构件斜截面抗剪承载力计算公式。试验结果表明:部分预制装配型钢混凝土构件斜截面破坏形态有斜压破坏和剪压破坏两种形式,预制混凝土和现浇混凝土的协同工作良好;提出的抗剪承载力计算公式可为部分预制装配型钢混凝土构件的设计提供一定的基础。
To study the shear capacity of partially prefabricated steel reinforced concrete(PPSRC) members,static loading tests of seven PPSRC specimens were designed and carried out in this study. The effects of the shear span ratio, the strength of cast-in-place inner concrete, and the section shape on the shear behavior of the PPSRC members were investigated. Furthermore, the failure mechanism and shear capacity of PPSRC members were studied by analyzing the failure progress and the curves of shear force versus both displacement and strain.According to the test results, the main factors affecting the shear capacity of PPSRC members were analyzed, and the oblique section shear capacities of PPSRC members were proposed using the superposition method. The experimental results showed that the failure patterns of the oblique section of the PPSRC members included diagonal compression failure and shear compression failure. Moreover, prefabricated concrete and cast-in-place inner concrete of members combined completely. The formula for calculating the shear capacity lays a solid foundation for the design of PPSRC members.
To study the shear capacity of partially prefabricated steel reinforced concrete(PPSRC) members,static loading tests of seven PPSRC specimens were designed and carried out in this study. The effects of the shear span ratio, the strength of cast-in-place inner concrete, and the section shape on the shear behavior of the PPSRC members were investigated. Furthermore, the failure mechanism and shear capacity of PPSRC members were studied by analyzing the failure progress and the curves of shear force versus both displacement and strain.According to the test results, the main factors affecting the shear capacity of PPSRC members were analyzed, and the oblique section shear capacities of PPSRC members were proposed using the superposition method. The experimental results showed that the failure patterns of the oblique section of the PPSRC members included diagonal compression failure and shear compression failure. Moreover, prefabricated concrete and cast-in-place inner concrete of members combined completely. The formula for calculating the shear capacity lays a solid foundation for the design of PPSRC members.
引文
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[18]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 Industry Press,2016.(in Chinese)
[2]杨勇,郭子雄,薛建阳,等.型钢混凝土粘结滑移性能试验研究[J].建筑结构学报,2005,26(4):1―9.Yang Yong,Guo Zixiong,Xue Jianyang,et al.Experiment study on bond slip behavior between section steel and concrete in SRC structures[J].Journal of Building Structures,2005,26(4):1―9.(in Chinese)
[3]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 SRSHPC beams[J].Engineering Mechanics,2011,28(3):129―135.(in Chinese)
[4]刘祖强,薛建阳,韩琛,等.实腹式型钢混凝土T形柱抗震性能试验研究[J].工程力学,2018,35(5):17―26.Liu Zuqiang,Xue Jianyang,Han Chen,et al.Experimental study on seismic performance of solid steel reinforced concrete T-shaped column[J].Engineering Mechanics,2018,35(5):17―26.(in Chinese)
[5]王妮,陈宗平,陈宇良.型钢混凝土L形柱空间角节点抗震性能分析[J].工程力学,2018,35(5):180―192.Wang Ni,Chen Zongping,Chen Yuliang.Analysis on seismic performance of steel reinforced concrete L-shaped column space corner joints.[J].Engineering Mechanics,2018,35(5):180―192.(in Chinese)
[6]姜效亭.装配式型钢混凝土柱连接处抗震性能研究与应用[D].合肥:安徽建筑大学,2016.Jiang Xiaoting.Prefabricated steel reinforced concrete column joints seismic performance research and application[D].Hefei:Anhui Jianzhu University,2016.(in Chinese)
[7]马宁.预制装配型钢混凝土T型梁抗弯性能研究[D].西安:西安建筑科技大学,2015.Ma Ning.Study on flexural behavior of prefabricated and assembly steel reinforced concrete T-beam[D].Xi’an:Xi’an University of Architecture and Technology,2015.(in Chinese)
[8]Hwang J H,Lee D H,Oh J Y,et al.Seismic performances of centrifugally-formed hollow-core precast columns with multi-interlocking spirals[J].Steel&Composite Structure,2016,20(6):1259―1274.
[9]Xiao C,Deng F,Chen T,et al.Experimental study on concrete-encased composite columns with separate steel sections[J].Steel&Composite Structure,2017,23(4):483―491.
[10]Yang Yong,Yu Yulong,Guo Yuxiang,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.
[11]Yang Yong,Xue Yicong,Yu Yunlong,et al.Experimental study on flexural performance of partially precast steel reinforced concrete beams[J].Journal of Constructional Steel Research,2017,133:192―201.
[12]聂建国,王洪全,谭英,等.钢-高强混凝土组合梁的试验研究[J].建筑结构学报,2004,25(1):58―62.Nie Jianguo,Wang Hongquan,Tan Ying,et al.Expermental study on composite steel-HSC beams[J].Journal of Building Structures,2004,25(1):58―62.(in Chinese)
[13]YB 9083―2006,钢骨混凝土结构设计规程[S].北京:冶金工业出版社,2006.YB 9083―2006,Specification for design of steel-reinforced concrete structures[S].Beijing:Metallurgical Industry Press,2006.(in Chinese)
[14]赵鸿铁.钢与混凝土组合结构[M].北京:科学出版社,2001.Zhao Hongtie.Steel-concrete composite structure[M].Beijing:Science Press,2001.(in Chinese)
[15]Hwang S J,Lu W Y,Lee H J.Sheer strength prediction for reinforced concrete corbels[J].ACI Structural Journal,2000,97(4):543―552.
[16]ACI 318,Building code requirements for structural concrete and commentary[S].Farmington Hill,MI USA:American Concrete Institute,2011.
[17]张士前,陈宗平,王妮,等.型钢混凝土十形柱空间节点受剪机理及抗剪强度研究[J].土木工程学报,2014,47(9):84―93.Zhang Shiqian,Chen Zongping,Wang Ni,et al.Shear mechanism and shear strength of steel reinforced concrete(SRC)cross-shape 3D column-beam joints[J].Journal of Civil Engineering,2014,47(9):84―93.(in Chinese)
[18]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 Industry Press,2016.(in Chinese)