钢与混凝土组合结构节点及构件数值分析方法研究
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摘要
钢与混凝土组合结构具有强度高、延性好、抗震性能优越、施工方便等特点。国内外学者采用有限元方法对钢与混凝土组合结构构件及节点的力学性能进行了一定的研究,但是关于如何建立精确的钢与混凝土组合结构构件及节点有限元模型的研究还很少。开展钢与混凝土组合结构的有限元分析方法的研究,对于确定钢与混凝土组合结构的力学性能,促进钢与混凝土组合结构的技术进步和应用推广,具有一定的理论意义和实用价值。
本文建立了N型圆钢管混凝土相贯节点有限元模型,进行了极限承载力和滞回性能分析,通过将有限元分析结果与试验结果进行对比,验证了钢管混凝土节点有限元分析方法的正确性。分析了混凝土本构模型、钢管与混凝土界面摩擦系数和几何非线性等对有限元分析结果的影响。分析发现混凝土本构模型和摩擦系数对分析结果基本没影响,几何非线性对有限元分析结果有一定影响。
本文建立了型钢混凝土受弯构件的有限元模型,进行了极限承载力分析,并将有限元分析结果与试验结果进行对比,验证了型钢混凝土构件有限元分析方法的正确性。比较了弥散开裂模型和塑性损伤模型在型钢混凝土有限元分析中的适用性,分析了受拉极限应变对有限元分析结果的影响。并将有限元分析结果与规范相应公式的计算结果进行了比较,规范相应公式计算结果偏于保守。
Steel - concrete composite structure has obvious merits, such as high strength, good ductility, better seismic behavior, and convenient construction. Finite element method has been widely adopted in the study of steel - concrete composite structures. However, little research has been done on how to establish precise finite element model of steel - concrete composite structure. It is necessary and meaningful to verify different settings in finite element method for the analysis of joints and members of steel - concrete composite structures.
Finite element model of a N-type concrete-filled steel tube joint was setup in this paper and the ultimate load-carrying capacity and hysteretic behaviour of the joints were investigated. The FEM analysis results agreed very well those obtained by tests, which verified the rationality of the numerical method. The influences of concrete constitutive model, friction coefficient, and geometric non-linearity on the results of finite element analysis were discussed. It was shown that concrete constitutive model and friction coefficient has little effect on the results of numerical analysis, while the geometric non-linearity has some effect and need to be considered.
Finite element model of a steel reinforced concrete beam was setup in this paper, the ultimate load-carrying capacity of the beam under bending load was investigated. The FEM analysis results agreed very well with those obtained by tests, which verified the rationality of the numerical method. Two material models, smeared cracking and damaged plasticity, were adopted and compared for the concrete respectively. The influence of limit strain settings on FEM analysis results was also discussed. Comparison between the FEM analysis results and the formula in related code showed that the formula gives conservative result.
本文建立了N型圆钢管混凝土相贯节点有限元模型,进行了极限承载力和滞回性能分析,通过将有限元分析结果与试验结果进行对比,验证了钢管混凝土节点有限元分析方法的正确性。分析了混凝土本构模型、钢管与混凝土界面摩擦系数和几何非线性等对有限元分析结果的影响。分析发现混凝土本构模型和摩擦系数对分析结果基本没影响,几何非线性对有限元分析结果有一定影响。
本文建立了型钢混凝土受弯构件的有限元模型,进行了极限承载力分析,并将有限元分析结果与试验结果进行对比,验证了型钢混凝土构件有限元分析方法的正确性。比较了弥散开裂模型和塑性损伤模型在型钢混凝土有限元分析中的适用性,分析了受拉极限应变对有限元分析结果的影响。并将有限元分析结果与规范相应公式的计算结果进行了比较,规范相应公式计算结果偏于保守。
Steel - concrete composite structure has obvious merits, such as high strength, good ductility, better seismic behavior, and convenient construction. Finite element method has been widely adopted in the study of steel - concrete composite structures. However, little research has been done on how to establish precise finite element model of steel - concrete composite structure. It is necessary and meaningful to verify different settings in finite element method for the analysis of joints and members of steel - concrete composite structures.
Finite element model of a N-type concrete-filled steel tube joint was setup in this paper and the ultimate load-carrying capacity and hysteretic behaviour of the joints were investigated. The FEM analysis results agreed very well those obtained by tests, which verified the rationality of the numerical method. The influences of concrete constitutive model, friction coefficient, and geometric non-linearity on the results of finite element analysis were discussed. It was shown that concrete constitutive model and friction coefficient has little effect on the results of numerical analysis, while the geometric non-linearity has some effect and need to be considered.
Finite element model of a steel reinforced concrete beam was setup in this paper, the ultimate load-carrying capacity of the beam under bending load was investigated. The FEM analysis results agreed very well with those obtained by tests, which verified the rationality of the numerical method. Two material models, smeared cracking and damaged plasticity, were adopted and compared for the concrete respectively. The influence of limit strain settings on FEM analysis results was also discussed. Comparison between the FEM analysis results and the formula in related code showed that the formula gives conservative result.
引文
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[2]范进,沈银良,张斌.型钢混凝土梁受力性能试验研究.南京理工大学学报(自然科学版),2006,30(06):709-713
[3]钟善桐.高层钢管混凝土结构.哈尔滨:黑龙江科学技术出版社,1999
[4]钟善桐.钢管混凝土结构.哈尔滨:黑龙江科学出版社,1994
[5]蔡绍怀.现代钢管混凝土结构.北京:人民交通出版社,2003
[6]韩林海.钢管混凝土结构-理论与实践.北京:科学出版社,2004.
[7]韩林海,陶忠,刘威.钢管混凝土结构-理论与实践.福州大学学报(自然科学版),2001,29(6):24-34
[8]梅力彪,周云,阴毅.穿心暗牛腿钢管混凝土柱单梁节点空间非线性有限元分析.工业建筑,2004,34(9):81-83
[9]向黎明,吕西林,曹阳.新型钢管混凝土柱-梁节点抗震性能研究.结构工程师,2001,(3):20-24
[10]周毅妹.矩形钢管混凝土半刚性节点有限元分析[硕士论文].河北:河北农业大学,2005
[11]唐珉,蔡健.新型钢管混凝土柱-平板节点的非线性有限元分析[J].华南理工大学学报(自然科学版),2003,31(6):15-19
[12]汤文锋,王毅红,史耀华.新型钢管混凝土节点的非线性有限元分析[J].长安大学学报(自然科学版),2004,24(5):60-63
[13]聂建国,秦凯,肖岩.方钢管混凝土柱节点的试验研究及非线性有限元分析[J].工程力学,2006,23(11):99-115
[14]王静峰,韩林海,江莹.方钢管混凝土柱-钢梁外加强环节点的非线性有限元分析.沈阳建筑大学学报(自然科学版),2007,23(02):177-181
[15]尧国皇,宋宝东,黄用军等.矩形钢管混凝土T型受压节点受力性能的有限元分析.钢结构,2008,23(2):7-11
[16]葛继平.循环荷载作用下方钢管混凝土柱与钢梁连接节点的非线性有限元分析[硕士论文].福建:福州大学,2004
[17]邱捷.矩形钢管混凝土框架三维非线性有限元分析[硕士论文].江苏:河海大学,2007
[18]刘威.钢管混凝土局部受压时的工作机理研究[博士论文].福建:福州大学,2005
[19] Schneider S P. Axially loaded concrete-filled steel tubes. Journal of Structural Engineering, 1998, 124(10):1125-1138
[20] Hsuan-Teh Hu, Chiung-Shiann Huang, Ming Hsien Wu. Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect. Journal of Structural Engineering, 2003, 129(10): 1322-1329.
[21] Hsuan-Teh Hu, Chiung-Shiann Huang, Zhi-Liang Chen. Finite element analysis of CFT columns subjected to an axial compressive force and bending moment in combination. Journal of Constructional Steel Research. 2005, 61(12): 1692-1712.
[22] Ehab Ellobody, Ben Young. Nonlinear analysis of concrete-filled steel SHS and RHS columns. Thin-Walled Structures, 2006, 44(8): 919-930.
[23] Susantha K A S,Ge H B, Usami T. Confinement evaluation of concrete-filled box-shaped steel columns. Steel and Composite Structures, 2001, 1(3):313-328.
[24] Yousef M Alostaz, Stephen P Schneider. Analytical behavior of connections to concrete-filled steel tubes. Journal of Constructional Steel Research, 1996, 40(2): 95-127
[25] J Beutel, D Thambiratnam, N Perera. Cyclic behaviour of concrete filled steel tubular column to steel beam connections. Engineering Structures, 2002, 24(1): 29-38.
[26] J Beutel, D Thambiratnam, N Perera. Monotonic behaviour of composite column to beam connections. Engineering Structures, 2001, 23(9): 1152-1161.
[27] Chang-Hoon Kang, Kyung-Jae Shin, et al. Hysteresis Behavior of CFT Column to H-Beam Connections with External T-Stiffeners and Penetrated Elements, Enginee- ring Structures, 2001, 23(9):1194-1201
[28] Yousef.M.Alostaz, Stephen P. Schneider. Analytical Behavior of Connections to Concrete-filled Steel Tubes. Journal of Constructional Steel Research, 1996, 40(2): 95-127
[29] Han L-H., W-D Wang, et al. Behaviour of steel beam to concrete-filled SHS column frames: Finite element model and verifications. Engineering Structures, 2008, 30(6): 1647-1658.
[30]赵鸿铁.钢与混凝土组合结构.北京:科学出版社,2001
[31]王连广,李立新.国外型钢混凝土(SRC)结构设计规范基础介绍.建筑结构,2001,31(2):23-24
[34]傅传国,娄宇.预应力型钢混凝土结构试验研究及工程应用.北京:科学出版社,2007
[35]中国建筑科学研究院.混凝土结构研究报告选集.北京:中国建筑工业出版社,1994
[36]王连广,李立新等.钢骨混凝土受弯构件非线性全过程分析.沈阳建筑工程学院学报,2001,17(2):91-93
[37]杨勇,郭子雄等.型钢混凝土结构ANSYS数值模拟技术研究.工程力学,2006,23(4):79-85
[38]杨勇,薛建阳,赵鸿铁.考虑粘结滑移的型钢混凝土结构ANSYS模拟方法研究.西安建筑科技大学学报(自然科学版),2006,38(3):302-310
[39]刘永军.型钢混凝土柱正截面承载力有限元分析[硕士论文].西安:西安建筑科技大学,1998
[40]乔玉.SRC框架节点受力性能及非线性有限元分析[硕士论文].西安:西安建筑科技大学,1995
[41]江建华.型钢混凝土(SRC)构件抗剪性能非线性有限元分析[硕士论文].西安:西安建筑科技大学,1998
[42]王勖成,邵敏.有限单元法基本原理和数值方法.北京:清华大学出版社,1997
[43] ABAQUS version6.8 Documentation. USA: ABAQUS, Inc
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