Please wait a minute...
J4  2012, Vol. 46 Issue (11): 1998-2006    DOI: 10.3785/j.issn.1008-973X.2012.11.010
    
Study on the component-based model of semi-rigid
beam-to-column joints initial stiffness
WANG Zhen-yu1, ZHANG Jin-fan1, FANG Cheng2, LIU Guo-hua1,JIANG Jian-qun1
1.Institute of Hydraulic Structure and Water Environment, Zhejiang University, Hangzhou 310058 China;
2. Department of Civil and Environmental Engineering, Imperial College of Science, Technology and
Medicine, London SW7 2AZ UK
Download:   PDF(0KB) HTML
Export: BibTeX | EndNote (RIS)      

Abstract  

In order to simulate the mechanical properties of semi-rigid beam-to-column joints conveniently and precisely, an initial stiffness calculation method was proposed in this paper based on the component method of EuroCode3. A T-stub model was set up and systematically verified. And the semi-rigid beam-to-column joint could be simplified with a set of T-stubs. Through that simplification, the semi-rigid beam-to-column joint was simulated with a series of equivalent springs and bars. Compared with the Eurocode3, the present method in this paper is based on a set of T-stubs and using a single spring instead of several springs to simulate the each corresponding T-stub. It is demonstrated by the T-stub example that the calculated load-displacement curve fits well with the numerical result and the experimental result. Furthermore, the semi-rigid beam-to-column joint responses calculated by the proposed method show a good accordance with the experimental initial stiffness and moment-rotation relation, which verify the correctness of the present method.



Published: 11 December 2012
CLC:  TU 391  
Cite this article:

WANG Zhen-yu, ZHANG Jin-fan, FANG Cheng, LIU Guo-hua,JIANG Jian-qun. Study on the component-based model of semi-rigid
beam-to-column joints initial stiffness. J4, 2012, 46(11): 1998-2006.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2012.11.010     OR     http://www.zjujournals.com/eng/Y2012/V46/I11/1998


半刚性节点初始刚度的组件式计算模型

为了简便、准确地模拟半刚性梁柱节点的力学性状,在欧洲规范(EuroCode3)组件方法的基础上,建立各种荷载模式下T型件的组件式模型,并通过将梁柱半刚性节点等效为一系列T型件的组合,建立由一系列等效弹簧与杆件组成的半刚性梁柱节点的组件式计算模型.与EuroCode3相比,该方法的特点在于以T型件为基本分析单元,采用单个弹簧代替多个弹簧来模拟每个T型件.结果表明,T型件的拉力-位移关系曲线与精细数值计算、试验成果吻合良好,且计算的梁柱节点初始刚度、弯矩-转角关系曲线与试验值很接近,验证了本文方法的正确性.

[1] 侯颖、霍达、腾海文,等. 半刚性节点钢框架侧移限值的可靠性分析[J],工业建筑,2009,39:592-594.
HOU Ying, HOU Da, TENG Haiweng, et al. Reliability analysis of semirigid steel frames based on peak displacement limits [J]. Industrial Building, 2009, 39: 592-594.
[2] RAUL Z, DAN D. Stiffness of joints in bolt connected coldformed steel trusses [J]. Journal of Constructional Steel Research, 2006, 62(3): 240-249.
[3] 陈爱国,顾强,苏明周,等. 腹板双角钢梁柱连接循环荷载实验研究[J].建筑结构学报,2003,24(6):31-35.
CHENG Aiguo, GU Qiang, SU Mingzhou, et al, Cyclic behavior of double angle beamtocolumn connections[J]. Journal of Building Structures, 2003,24(6):31-35.
[4] ALFONSAS D,KESTUTIS U. Analysis of the steel frames with the semirigid beamtobeam and beamtocolumn knee joints under bending and axial forces [J] Engineering Structures, 2008,30(11): 3114-3118.
[5] 顾正维,孙炳南,潘海勤.不同排列伸展螺栓端板半刚性节点的三维非线性分析[J].钢结构,2003,06(18):54-56.
GU Zhengwei, SUN Bingnan, PAN Haiqin. Nonlinear analysis of semirigid connection of different array of extended bolted endplate [J] Steel Construction, 2003, 18(68):54-56.
[6] L SIMES DA SILVA, AM GIRO Coelho. An analytical evaluation of the response of steel joints under bending and axial force [J]. Computers& Structures, 2001,79(8):873-881.
[7] 王燕,李华军,厉见芬.半刚性梁柱节点连接的初始刚度和结构内力分析[J].工程力学,2003,20(6):65-69.
WANG Yan, LI Huajun, LI Jianfen. Initial stiffness of semirigid beamto column connections and structural internal force analysis [J]. Engineering Mechanics, 2003, 20(6): 65-69.
[8] 徐良伟,王星,蒋菡.半刚性连接钢框架简化分析的无剪力分配法[J].建筑技术开发,2002,29(9):5-6.
XU Liangwei, WANG Xing, JIANG Han. Nonshear force distribution method of simplified analysis for steel frames with semirigid connections [J]. Building Technique Development, 2002,29(9):5-6.
[9] Eurocode3. EN 1993–01–08. Design of steel structurespart 18: Design of joints\
[S\]. Brussels (Belgium): CEN,2005.
[10] IZZUDDIN B A,  VLASSIS A G,  ELGHAZOULI A Y, et al.Progressive collapse of multistorey buildings due to sudden column lossPart I: Simplified assessment framework [J]. Engineering Structures, 2008, 30(5):1308-1318.
[11] VAN KEULEN D C, NETHERCOT D A, SNIJDER H H. Frame analysis incorporating semirigid joint action: applicability of the half initial Secant stiffness approach[J]. Journal of Constructional Steel Research, 20039, 59(9): 1083-1100.
[12] WANG Weiyong, LI Guoqiang, DONG Yuli. Experimental study and springcomponent modeling of extended endplate joints in fire[J]. Journal of Constructional Steel Research, 20078,63(8):1127-1137.
[13] HAFIZAH N, SULONG R, Behaviour of steel connections under fire conditions [D]. London Imperial College, 2005: 67.
[14] H GERVSIO, L. SIMES DA SILVA, L. BORGES, Reliability assessment of the postlimit stiffness and ductility of steel joints [J]. Journal of Constructional Steel Research, 2004, 60(3/5): 635-648.
[15] L SIMES DA SILVA, Towards a consistent design approach for steel joints under generalized loading[J]. Journal of Constructional Steel Research, 2008.64(9): 1059-1075.
[16] WANG Z Y, TIZANI W, WANG Q Y. Strength and initial stiffness of a blindbolt connection based on the Tstub model[J]. Engineering Structures, 2010.32(9): 2505-2517.
[17] MISTAKIDIS E S, BANIOTOPOULOS C C, BISBOS C D. Steel TStub connections under static loading: an effective2D numerical model [J]. Journal of Constructional Steel Research, 1997, 44(1/2), 51-67.
[18] GIRO C A, SIMES da Silva  L, BIJLAARD, F. Finiteelement modeling of the nonlinear behavior of bolted Tstub connections [J]. Journal of Structural Engineering, 2006, 132(6): 918-928.
[19] 邢贵洋,钢结构高强螺栓端板连接节点弯矩转角关系及受力性能研究[M].沈阳:沈阳建筑大学出版社,2006,45-46.
[20] LOUREIRO A, GUTIRREZ R, REINOSA J M. Axial stiffness prediction of nonpreloaded Tstubs: An analytical frame approach [J]. Journal of Constructional Steel Research, 2010, 66(12), 1516-1522.
[21] 徐凌,朱浮声,李晓龙.不同节点轻钢框架的受力性能试验研究[J].东北大学学报:自然科学版,2006, 29(10):1165-1168.
XU Ling, ZHU Fusheng, LI Xiaolong. Experimental study on lightweight steel frames with different semirigid joints [J]. Journal of Northeastern University:Natural Science, 2006,29(10):1165-1168.
[22] 徐凌,李晓龙.钢结构半刚性节点连接试验与性能分析[J].辽宁工程技术大学学报,2006,25(1):66-69.
XU Ling, LI Xiaolong. Experimental research and functional analysis of attachments of semirigid nodes in steel structures[J]. Journal of Liaoning Technical University, 2006,25(1):66-69.
[23] 徐凌,李晓龙.半刚性节点连接力学性能分析[J].中国矿业,2006,15(5):89-92.
XU Ling, LI Xiaolong. Analysis on behavior of attachment mechanics of semirigid nodes [J]. China Mining Magazine, 2006, 15(5):89-92.
[24] GOTO Y, MIYASHITA S. Classifcation system for rigid and semirigid connections [J]. Journal of Structural Engineering, 1998, 124(7):750-757.
[25] BAHAARI M R, SHERBOURNE A N. Behavior of eightbolt large capacity endplate connections [J]. Computers and Structures, 2000, 77(3):315-325.
[26] CHEN W F, GOTO Y, LIEW J Y R. Stability design of semirigid frames [M]. Hoboken, State of New Jersey:John Wiley & Sons, 1996: 7-13.
[27] MA GIZEJOWSKI, CJ BRANICKI, AM BARSZCZ, et al. Advanced analysis of steel frames with effects of joint deformability and partial strength accounted for [J]. Journal of Civil Engineering and Management, 2004, X(3): 199-208.
[28] VAN KEULEN D C,  NETHERCOT D A,  SNIJDER H H, et al. Frames analysis incorporating semirigid joint action: Applicability of the half initial Secant stiffness approach [J].Journal of Constructional Steel Research, 2003, 59(9):1083-1100.
[29] JASPART JP. General report: Session on connections [J]. Journal of Constructional Steel Research, 2000, 55(13): 69-89.
[30] HASAN R, KISHI N, CHEN WF. A new nonlinear connections classifcation system [J]. Journal of Constructional Steel Research, 1998, 47(1/2): 119-140.
[31] WILKINSON T, HANCOCK GJ. Tests to examine plastic behaviour of knee joints in coldformed RHS [J]. Journal of Structural Engineering, 2000, 126(3): 297-305.
[32] PIRMOZ A, KHOEI A S, MOHAMMADREZAPOUR E. Moment–rotation behavior of bolted top–seat angle connections [J]. Journal of Constructional Steel Research, 2009,65(4): 973-984.
[33] 邢贵洋,王升博,周光禹.高强螺栓端板连接节点的弯矩转角关系研究[J].山西建筑,2006,36(7):52-53.
XING Guiyang, ZHOU Guangyu, WANG Shengbo. Study on the momentrotation relationship of highstrength boltend plate connection joints [J]. Shanxi Architecture, 2006, 36 (7) : 52-53.

[1] ZHANG Lei, LUO Gui-fa, TONG Gen-shu. Refined study on lateral-force resistance of dual structural system composed of moment-resisting frame and chevron braces[J]. J4, 2013, 47(10): 1815-1823.
[2] XIAO Nan, WANG Hai, CHEN Hua-peng, ZHANG Fei-lin. Symptom-based reliability and lifetime prediction for latticed structures under atmospheric corrosion[J]. J4, 2013, 47(8): 1373-1378.
[3] ZHANG Lei, TONG Gen-shu. Finite element modelling of thin-walled members
in overall stability analysis
[J]. J4, 2011, 45(3): 531-538.
[4] JIN Yang, TONG Gen-Shu. Elastic buckling of web restrained by flanges in I-section members[J]. J4, 2009, 43(10): 1883-1891.