DOI QR코드

DOI QR Code

Cyclic response and design procedure of a weak-axis cover-plate moment connection

  • Lu, Linfeng (School of civil engineering, Chang'an University) ;
  • Xu, Yinglu (School of civil engineering, Chang'an University) ;
  • Zheng, Huixiao (School of civil engineering, Chang'an University) ;
  • Lim, James B.P. (Department of Civil and Environmental Engineering, University of Auckland (City Campus))
  • 투고 : 2017.07.29
  • 심사 : 2017.11.07
  • 발행 : 2018.02.10

초록

This paper systematically investigated the mechanical performance of the weak-axis cover-plate connection, including a beam end monotonic loading test and a column top cyclic loading test, and a series of parametric studies for exterior and interior joints under cyclic loading using a nonlinear finite element analysis program ABAQUS, focusing on the influences of the shape of top cover-plate, the length and thickness of the cover-plate, the thickness of the skin plate, and the steel material grade. Results showed that the strains at both edges of the beam flange were greater than the middle's, thus it is necessary to take some technical methods to ensure the construction quality of the beam flange groove weld. The plastic rotation of the exterior joint can satisfy the requirement of FEMA-267 (1995) of 0.03 rad, while only one side connection of interior joint satisfied ANSI/AISC 341-10 under the column top cyclic loading. Changing the shape or the thickness or the length of the cover-plate did not significantly affect the mechanical behaviors of frame joints no matter in exterior joints or interior joints. The length and thickness of the cover-plate recommended by FEMA 267 (1995) is also suitable to the weak-axis cover-plate joint. The minimum skin plate thickness and a design procedure for the weak-axis cover-plate connections were proposed finally.

키워드

과제정보

연구 과제 주관 기관 : Nature Science Foundation of China (NSFC), Central Universities

참고문헌

  1. ANSI/AISC 341-10 (2010), Seismic Provisions for structural steel buildings. AISC; Chicago, IL, USA.
  2. Ataollahi, S., Banan, M.R. and Banan, M.R. (2016), "Numerical cyclic behavior of T-RBS: A new steel moment connection", Steel Compos. Struct., Int. J., 21(6), 1251-1274. https://doi.org/10.12989/scs.2016.21.6.1251
  3. Driscoll, G.C. and Beedle, L.S. (1982), "Suggestions for avoiding beam-to-column web connection failure", Eng. J., 19(1), 16-19.
  4. Engelhardt, M.D. and Sabol, T.A. (1998), "Reinforcing of steel moment connections with cover plates: benefits and limitations", Eng. Struct., 20(4-6), 510-520. https://doi.org/10.1016/S0141-0296(97)00038-2
  5. FEMA-267 (1995), Interim Guidelines: Evaluation, Repair, Modification and Design of Steel Moment Frames, Report No. SAC-95-02; Washington, D.C., USA.
  6. FEMA-355D (2000), State of the Art Report on Connection Performance; prepared by the SAC Joint Venture for the Federal Emergency Management Agency, Washington, WA, USA.
  7. GB 50011-2010(2010), Code for Seismic Design of Buildings, China Architecture & Building Press; Beijing, P.R. China.
  8. JGJ/T 101 (2015), Specification for seismic test of buildings; China Architecture & Building Press; Beijing, P.R. China.
  9. Kim, T., Whittaker, A.S., Gilani, A.S.J., Bertero, V.V. and Takhirov, S.M. (2002), "Cover-plate and flange-plate steel moment-resisting connections", J. Struct. Eng., 128, 474-482. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:4(474)
  10. Lu, L.F., Xu, Y., Zhou, T. and Zheng, H. (2016), "Experimental research on box strengthened joint connection for weak axis of I-section column-H-shaped beam under monotonic loading", J. Build. Struct., 37(2), 73-80.
  11. Lu, L., Xu, Y. and Zheng, H. (2017), "Investigation of composite action on seismic performance of weak-axis column bending connections", J. Constr. Steel Res., 129, 286-300. https://doi.org/10.1016/j.jcsr.2016.11.019
  12. Nassani, D.E., Chikho, A.H. and Akgonen, A.I. (2017), "Semi-rigidity of cap plate and extended end plate connections", Steel Compos. Struct., Int. J., 23(5), 493-499. https://doi.org/10.12989/scs.2017.23.5.493
  13. Rezaifar, O. and Younesi, A. (2016), "Finite element study the seismic behavior of connection to replace the continuity plates in (NFT/CFT) steel columns", Steel Compos. Struct., Int. J., 21(1), 73-91. https://doi.org/10.12989/scs.2016.21.1.073
  14. Shim, H.J., Lee, E.T., Kim, S.B. and Kim, S.S. (2014), "Development and performance evaluation of weak-axis column bending connections for advanced constructability", Int. J. Steel Struct.res, 14(2), 369-380. https://doi.org/10.1007/s13296-014-2016-y
  15. Xu, Y.L., Lu, L.F., and Zhang, B.C. (2016), "Influence factor analysis on hysteretic behavior of weak-axis cover-plate connections of I-section column in frame side joint", J. Southeast Univ. (Natural Science Ed.), 46(3) 537-544.
  16. Zahrai, S.M., Mirghaderi, S.R. and Saleh, A. (2017a), "Increasing plastic hinge length using two pipes in a proposed web reduced beam section, an experimental and numerical study", Steel Compos. Struct., Int. J., 23(4), 421-433. https://doi.org/10.12989/scs.2017.23.4.421
  17. Zahrai, S.M., Mirghaderi, S.R. and Saleh, A. (2017b), "Tubular Web Reduced Beam Section (TW-RBS) connection, a numerical and experimental study and result comparison", Steel Compos. Struct., Int. J., 23(5), 571-583. https://doi.org/10.12989/scs.2017.23.5.571