方钢管混凝土柱-翼缘削弱型钢梁内隔板节点力学性能研究
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摘要
翼缘削弱型节点可将塑性铰外移到梁端,从而有效地保护节点,避免发生脆性连接破坏。基于ABAUQS软件,参照目前钢框架节点的削弱参数取值,对方钢管混凝土柱-翼缘削弱型钢梁内隔板节点力学性能的影响进行了数值模拟,结果表明:合理选择相应的翼缘削弱参数,可在承载力降低不明显的情况下实现此类节点塑性铰外移,且位移延性有所提高。基于前述模型,对此类节点的翼缘削弱参数对其承载力和位移延性的影响进行了参数分析,最终建议了此类节点削弱深度的合理取值范围。
The reduced beam section(RBS) connections can move the plastic hinge from joint panel to beam end,and protect the connection effectively to avoid the brittle failure connection mode.The composite joints with steel beam to square concrete-filled steel tubular(CFST) column with internal diaphragm were simulated using ABAQUS based on the weaken parameters of the RBS joints in steel structures.The results show that RBS joints with CFST column also can move the plastic hinge to beam end effctively and improve its displacement ductility under reasonable reduction parameters of the beam flange while the its ultimate strength didn't decrease obviously.Parametric studies were performed to investigate the effect of the ultimate strength and displacement ductility of the joints under different reduction parameters based on the numerical model,and a rational range of the reduction depth for this type of joints were proposed.
The reduced beam section(RBS) connections can move the plastic hinge from joint panel to beam end,and protect the connection effectively to avoid the brittle failure connection mode.The composite joints with steel beam to square concrete-filled steel tubular(CFST) column with internal diaphragm were simulated using ABAQUS based on the weaken parameters of the RBS joints in steel structures.The results show that RBS joints with CFST column also can move the plastic hinge to beam end effctively and improve its displacement ductility under reasonable reduction parameters of the beam flange while the its ultimate strength didn't decrease obviously.Parametric studies were performed to investigate the effect of the ultimate strength and displacement ductility of the joints under different reduction parameters based on the numerical model,and a rational range of the reduction depth for this type of joints were proposed.
引文
[1]韩林海,陶忠,王文达.现代组合结构和混合结构试验、理论和方法[M].北京:科学出版社,2009Han Lin-hai,Tao Zhong,Wang Wen-da.AdvancedComposite and Mixed Structures:Testing,Theory and Design Approach[M].Beijing:Science Press,2009(in Chinese)
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[3]Lignos Dimitrios G,Kolios Dimitrios,Miranda Eduardo.Fragility Assessment of Reduced Beam Section Moment Connections[J].Structural Engineering,2010,136(9):1140～1150
[4]Sophianopoulos D S,Deri A E.Parameters Affecting Response and Design of Steel Moment Frame Reduced Beam Section Connections:An Overview[J].Steel Structures,2011,11(2):133～144
[5]ANSI/AISC358-10.Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications[S].Chicago,Illinois,USA,2010
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[9]Wang Wen-da,Han Lin-hai,Brian Uy.Experimental Behaviour of Steel Reduced Beam Section To Concretefilled Circular Hollow Section Column Connections[J].Journal of Constructional Steel Research,2008,64:493～504
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[13]DB62/T25-3041-2009,钢管混凝土结构技术规程[S]DB62/T25-3041-2009,Technical Specification for Concrete-filled Steel Tubular Strctures[S](in Chinese)
[14]曾磊,许成祥,郑山锁,吕营.型钢高强高性能混凝土框架节点非线性有限之分析[J].工程抗震与加固改造,2010,32(2):37～41Zeng Lei,Xu Cheng-xiang,Zheng Shan-suo,Lv Ying.Nonlinear Friite Element Analysis on SRHSHPC Frame Joits[J].Earthquake Resistant Engineering and Retrofitting,2010,32(2):37～41(in Chinese)
[15]江雪梅,明伟,王海光.基于ETABS软件钢管混凝土板柱结构体与地震响应分析[J].工程抗震与加固改造,2010,32(5):36～42Jiang Xue-mei,Ming Wei,Wang Hai-guang.Seismic Dynamic Response Analysis for CFT Slab-column Structures with ETABS Sofware[J].Earthquake Resistant Engineering and Retrofitting,2010,32(5):36～42(in Chinese)
[2]郁有升,王燕.钢框架梁翼缘削弱型节点力学性能的试验研究[J].工程力学,2009,26(2):168～175Yu You-sheng,Wang Yan.Experimental Study on the Mechanical Property of Reduced Beam Section Connections of Steel Frame[J].Engineering Mechanics,2009,26(2):168～175(in Chinese)
[3]Lignos Dimitrios G,Kolios Dimitrios,Miranda Eduardo.Fragility Assessment of Reduced Beam Section Moment Connections[J].Structural Engineering,2010,136(9):1140～1150
[4]Sophianopoulos D S,Deri A E.Parameters Affecting Response and Design of Steel Moment Frame Reduced Beam Section Connections:An Overview[J].Steel Structures,2011,11(2):133～144
[5]ANSI/AISC358-10.Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications[S].Chicago,Illinois,USA,2010
[6]周天华,何保康,陈国津,魏潮文,单银木.方钢管混凝土柱与钢梁框架节点的抗震性能试验研究[J].建筑结构学报,2004,25(1):9～16Zhou Tian-hua,He Bao-kang,Chen Jin-guo,Wei Chao-wen,Shan Yin-mu.Expermental Studies on Seismic Behavior of Concrete-filled Steel Square Tubular Column and Steel Beam Joints under Cyclic Loading[J].Journal of Building Structures,2004,25(1):9～16(in Chinese)
[7]金刚,丁洁民,陈建斌.方钢管混凝土结构内隔板式节点试验研究[J].结构工程师,2005,21(4):75-80Jin Gang,Ding Jie-min,Chen Jian-bin.Experimental Study on Connections with Steel Diaphragm between CFRT Column and Steel Beam[J].Structural Engineers,2005,21(4):75～80(in Chinese)
[8]王文达,韩林海,游经团.方钢管混凝土柱-钢梁外加强环节点滞回性能的实验研究[J].土木工程学报,2006,39(9):17～25Wang Wen-da,Han Lin-hai,You Jing-tuan.Experimental Studies on Hysteretic Behaviors of Steel Beam to Concrete Filled SHS Column Connections with Stiffening Ring[J].China Civil Engineering Journal,2006,39(9):17～25(in Chinese)
[9]Wang Wen-da,Han Lin-hai,Brian Uy.Experimental Behaviour of Steel Reduced Beam Section To Concretefilled Circular Hollow Section Column Connections[J].Journal of Constructional Steel Research,2008,64:493～504
[10]李成玉,郭耀杰,罗冽.翼缘削弱对钢管混凝土外加强环节点受力性能的改善[J].土木工程学报,2010,43(12):21～27Li Cheng-yu,Guo Yao-jie,Luo Lie.Mechanical Behavior Improvement for Concrete Filled Steel Tubular Exterior Stiffenerring Connections with Reduced Beam Flange[J].China Civil Engineering Journal,2010,43(12):21～27(in Chinese)
[11]王文达,秦庚,张鹏鹏.钢管混凝土柱-钢梁外环板节点抗弯承载力计算方法[J].土木建筑与环境工程,20011,24(5):24～27Wang Wen-da,Qin Geng,Zhang Peng-peng.Design Approach on Flexural Load-carrying Capacity of Steel Beam to CFST Column Joints with External Stiffening Ring[J].Journal of Civil,Architectural&Environmental Engineering,2011,33(4):29～34(in Chinese)
[12]杜培源.方钢管混凝土柱-工字钢梁节点性能研究[D].南京:南京工业大学,2006Du Pei-yuan.Research on the Connections Between the CFSST Columns and H Shape Steel Beams[D].Nanjing:Nanjing University of Technology,2006(in Chinese)
[13]DB62/T25-3041-2009,钢管混凝土结构技术规程[S]DB62/T25-3041-2009,Technical Specification for Concrete-filled Steel Tubular Strctures[S](in Chinese)
[14]曾磊,许成祥,郑山锁,吕营.型钢高强高性能混凝土框架节点非线性有限之分析[J].工程抗震与加固改造,2010,32(2):37～41Zeng Lei,Xu Cheng-xiang,Zheng Shan-suo,Lv Ying.Nonlinear Friite Element Analysis on SRHSHPC Frame Joits[J].Earthquake Resistant Engineering and Retrofitting,2010,32(2):37～41(in Chinese)
[15]江雪梅,明伟,王海光.基于ETABS软件钢管混凝土板柱结构体与地震响应分析[J].工程抗震与加固改造,2010,32(5):36～42Jiang Xue-mei,Ming Wei,Wang Hai-guang.Seismic Dynamic Response Analysis for CFT Slab-column Structures with ETABS Sofware[J].Earthquake Resistant Engineering and Retrofitting,2010,32(5):36～42(in Chinese)
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