型钢混凝土(SRC)暗梁受弯承载力试验研究
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摘要
型钢混凝土(SRC)暗梁在大跨度组合楼盖中具有广泛应用前景,结合6个型钢混凝土暗梁试件的单调静力试验,对型钢混凝土暗梁的受弯破坏形态、承载能力和受弯刚度进行了研究.试验着重研究了暗梁截面高度、型钢截面尺寸、型钢截面类型等关键参数对型钢混凝土暗梁的承载能力、受弯刚度的影响规律及影响特点.试验研究结果表明,所提出的型钢混凝土暗梁具有良好的受力性能,进一步结合型钢混凝土暗梁受力机理的理论分析,分别采用"刚心法"和"换算截面法"建立了型钢混凝土暗梁的受弯刚度计算公式,并基于现有规程和理论,提出了型钢混凝土暗梁的正截面受弯承载能力计算方法.
Steel reinforced concrete(SRC) shallow beam in slim floors has a wide application prospect in long-span composite floors.Combined with monotonous static test for six steel reinforced concrete shallow beam specimens,SRC shallow beam flexural failure patterns,its bearing capacity and the flexural stiffness are studied.Experimental research on the shallow beam section height,the size of the steel section,steel cross section type and other key parameters that influence the law and characteristics of the carrying capacity as well as the bending stiffness of the SRC shallow beam.Results show that the proposed SRC shallow beam in slim floors gives good bending performance.Based on SRC beam stress mechanism of theoretical analysis,the stiffness-center method and transformed-section method are adopted to an SRC shallow beam flexural stiffness calculation formula.In accordance with the existing codes and theory,and the normal section bending capacity calculation method of the steel reinforced concrete shallow beam in slim floors is put forward.
Steel reinforced concrete(SRC) shallow beam in slim floors has a wide application prospect in long-span composite floors.Combined with monotonous static test for six steel reinforced concrete shallow beam specimens,SRC shallow beam flexural failure patterns,its bearing capacity and the flexural stiffness are studied.Experimental research on the shallow beam section height,the size of the steel section,steel cross section type and other key parameters that influence the law and characteristics of the carrying capacity as well as the bending stiffness of the SRC shallow beam.Results show that the proposed SRC shallow beam in slim floors gives good bending performance.Based on SRC beam stress mechanism of theoretical analysis,the stiffness-center method and transformed-section method are adopted to an SRC shallow beam flexural stiffness calculation formula.In accordance with the existing codes and theory,and the normal section bending capacity calculation method of the steel reinforced concrete shallow beam in slim floors is put forward.
引文
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[3]TSAVDDARIDIS K.D.Experimental and computational study of the vertical shear behaviour of partially encased perforated steel beams[J].Engineering Structures 2013,56:805-822.
[4]WANG Yuanqing,YANG Lu,SHI Yongjiu.Loading capacity of composite slim frame beams[J].Journal of Constructional Steel Research,2009,65(3):650-661.
[5]郑廷银,蔡万军,杨波.楼板对新型组合暗梁楼盖静力性能的影响[J].南京工业大学学报(自然科学版),2010,32(3):1-6.ZHENG Tingyin,CAI Wanjun,YANG Bo.Effect of floor plate on static performance of new type combinatory concealed-beam floor[J].Journal of Nanjing University of Technology(Natural Science Edition),2010,32(3):l-6.
[6]NARDIN De S,El Debs A L H C.Study of partially encased composite beams with innovative position of stud bolts[J].Journal of Constructional Steel Research2009,65(2):342-350.
[7]NARDIN De S,El Debs ALHC.Composite connections in slim-floor system;An experimental study[J].Journal of Constructional Steel Research 2012,68(1):78-88.
[8]杨勇,聂建国.型钢混凝土结构(SRC)设计规程比较[J].工业建筑,2006,36(1):81-84.YANG Yong,NIE Jianguo.Comparison of the specifications for design of SRC structures[J].Industrial Construction,2006,36(1):81-84.
[9]邵永健,赵鸿铁.型钢混凝土梁正截面受弯承载力计算理论的对比分析[J].西安建筑科技大学学报(自然科学版),2006,38(3):375-378.SHAO Yongjian,ZHAO Hongtie.Comparative study on the calculation theory for the flexural capacity of steel reinforced concrete beams[J],Xi an Univ.of Arch.&Tech.(Natural Science Edition),2006,38(3):375-378.
[10]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 Univ.of Arch.&Tech.,2008.
[11]郭志毅.钢-混凝土简支组合梁抗弯性能的试验与理论研究[D].西安:西安建筑科技大学,2007.GUO Zhiyi.Experiments and Theoretic Research on Flexural Behavior of Somple Supported Steel-Concrete Composite Beams[D].Xi'an:Xi'an Univ.of Arch.&Tech.,2007.
[12]刘尔怡.中部设置型钢的混凝土梁受弯性能研究[D].长沙:湖南大学,2011.LIU Eryi.Flexural Behavior of Steel Reinforced Concrete with Steel in the Middle[D].Changsha;Hunan University,2011.
[13]中华人民共和国发展改革委员会.钢骨混凝土结构设计规程:YB9082-97[S].北京:冶金工业出版社,1998.Development and Reform Commission of the P.R.C.Specification for Design of Steel Reinforced Concrete Structure:YB9082-97[S].Beijing:China Metallurgical Industry Press,1998.
[14]中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Construction of the P.R.C.Code for design of concrete Structures:GB50010-2010[S].Beijing:China Architecture and Building Press,2010.
[15]中华人民共和国建设部.型钢混凝土组合结构技术规程:JGJ138-2001/J130-2001[S].北京:中国建筑工业出版社,2002.Ministry of Housing Construction of the P.R.C.Technical Specification for Steel Reinforced Concrete Composite Structures:JG138-2001/J130-2001[S].Beijing:China Architecture and Building Press,2002.
[16]赵鸿铁.钢与混凝土组合结构[M].北京:科学出版社,2001.ZHAO Hongtie.Steel and Concrete Composite Structures[M].Beijing:Science Press,2001.
[2]沈蒲生.楼盖结构设计原理[M].北京:科学出版社,2003.SHEN Pusheng.Structure design principle of the Floor[M].Beijing:China Architecture and Building Press,2003.
[3]TSAVDDARIDIS K.D.Experimental and computational study of the vertical shear behaviour of partially encased perforated steel beams[J].Engineering Structures 2013,56:805-822.
[4]WANG Yuanqing,YANG Lu,SHI Yongjiu.Loading capacity of composite slim frame beams[J].Journal of Constructional Steel Research,2009,65(3):650-661.
[5]郑廷银,蔡万军,杨波.楼板对新型组合暗梁楼盖静力性能的影响[J].南京工业大学学报(自然科学版),2010,32(3):1-6.ZHENG Tingyin,CAI Wanjun,YANG Bo.Effect of floor plate on static performance of new type combinatory concealed-beam floor[J].Journal of Nanjing University of Technology(Natural Science Edition),2010,32(3):l-6.
[6]NARDIN De S,El Debs A L H C.Study of partially encased composite beams with innovative position of stud bolts[J].Journal of Constructional Steel Research2009,65(2):342-350.
[7]NARDIN De S,El Debs ALHC.Composite connections in slim-floor system;An experimental study[J].Journal of Constructional Steel Research 2012,68(1):78-88.
[8]杨勇,聂建国.型钢混凝土结构(SRC)设计规程比较[J].工业建筑,2006,36(1):81-84.YANG Yong,NIE Jianguo.Comparison of the specifications for design of SRC structures[J].Industrial Construction,2006,36(1):81-84.
[9]邵永健,赵鸿铁.型钢混凝土梁正截面受弯承载力计算理论的对比分析[J].西安建筑科技大学学报(自然科学版),2006,38(3):375-378.SHAO Yongjian,ZHAO Hongtie.Comparative study on the calculation theory for the flexural capacity of steel reinforced concrete beams[J],Xi an Univ.of Arch.&Tech.(Natural Science Edition),2006,38(3):375-378.
[10]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 Univ.of Arch.&Tech.,2008.
[11]郭志毅.钢-混凝土简支组合梁抗弯性能的试验与理论研究[D].西安:西安建筑科技大学,2007.GUO Zhiyi.Experiments and Theoretic Research on Flexural Behavior of Somple Supported Steel-Concrete Composite Beams[D].Xi'an:Xi'an Univ.of Arch.&Tech.,2007.
[12]刘尔怡.中部设置型钢的混凝土梁受弯性能研究[D].长沙:湖南大学,2011.LIU Eryi.Flexural Behavior of Steel Reinforced Concrete with Steel in the Middle[D].Changsha;Hunan University,2011.
[13]中华人民共和国发展改革委员会.钢骨混凝土结构设计规程:YB9082-97[S].北京:冶金工业出版社,1998.Development and Reform Commission of the P.R.C.Specification for Design of Steel Reinforced Concrete Structure:YB9082-97[S].Beijing:China Metallurgical Industry Press,1998.
[14]中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Construction of the P.R.C.Code for design of concrete Structures:GB50010-2010[S].Beijing:China Architecture and Building Press,2010.
[15]中华人民共和国建设部.型钢混凝土组合结构技术规程:JGJ138-2001/J130-2001[S].北京:中国建筑工业出版社,2002.Ministry of Housing Construction of the P.R.C.Technical Specification for Steel Reinforced Concrete Composite Structures:JG138-2001/J130-2001[S].Beijing:China Architecture and Building Press,2002.
[16]赵鸿铁.钢与混凝土组合结构[M].北京:科学出版社,2001.ZHAO Hongtie.Steel and Concrete Composite Structures[M].Beijing:Science Press,2001.