Browse > Article
http://dx.doi.org/10.5000/EESK.2005.9.2.059

Re-evaluation of Force Transfer Mechanism of Welded Steel Moment Connections  

Lee, Choel-Ho (서울대학교 건축학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.9, no.2, 2005 , pp. 59-69 More about this Journal
Abstract
Employing the classical beam theory for the design of welded steel moment connections has been brought into question by several researchers since the 1994 Northridge earthquake. In this study, the load transfer mechanism in various welded steel moment connections is comprehensively reviewed mainly based on recent studies conducted by the writer. Available analytical and experimental results showed that the load path in almost all the welded steel moment connections is completely different from that as predicted by the classical beam theory. Vertical plates near the connection such as the beam web, the web of the straight haunch, and the rib act as a strut rather than following the classical beam theory. The shear force transfer in the RBS connection is essentially the same as that in PN type connection. Some simplified analytical models that can be used as the basis of a practical design procedure are also presented.
Keywords
steel moment connections; welded; load path; seismic design; strut action;
Citations & Related Records
연도 인용수 순위
  • Reference
1 SAC, 'Seismic design criteria for new moment-resisting steel frame construction,' Report No. FEMA 350, SAC Joint Venture, Sacramento, Calif, 2000
2 Lee, C.-H. and Uang, C.-M. 'Analytical modeling of dual panel zone in haunch repaired steel MRFs,' Journal of Structural Engineering, ASCE, Vol. 123, No.1, 1997, pp. 20-29   DOI   ScienceOn
3 Popov, E. P., Yang, T.-S., and Balan, T., 'Steel MR Connection Design Critically Reviewed,' Proc. of EERC-CUREe Symposium in Honor of Vitelmo V. Bertero, 1997, pp. 65-74
4 Goel, S. C., Stojadinovic, B, and Lee, K.-H, 'Truss Analogy for Steel Moment Connections,' Engineering Journal, 2nd Quarter, 1997, pp. 43-53
5 Gere, J. M. and Timoshenko, S. P. Mechanics of Materials, Brooks/Cole Engineering Div., Calif, 1984
6 SAC, Technical Report: Experimental Investigations of Beam-Column Subassemblies, Report No. SAC-96-01, SAC Joint Venture, Sacramento, CA, 1996
7 Lee, C.-H. and Uang, C.-M. 'Analytical modeling and seismic design of steel moment connections with welded straight haunch,' Journal of Structural Engineering, ASCE, Vol. 127, No. 9, 2001, pp. 1028-1035   DOI   ScienceOn
8 Lee, C.-H., Jung, J.-H., Oh, M.-H. and Koo, E.-S., 'Cyclic seismic testing of steel moment connections reinforced with welded straight haunch,' Engineering Structures, Vol. 25, 2003, pp. 1743-1753   DOI   ScienceOn
9 Uang, C.-M. and Bondad, D, 'Static Cyclic Testing of Pre-Northridge and Haunch Repaired Steel Moment Connections,' SAC 96-01, Part 1, 1996, pp. 133-139
10 Lee, C.-H. and Yoon, T.-H. 'Analytical re-examination of shear transfer in welded steel moment connection,' Proc. of 1st Japan-Korea Joint Seminar on Earthquake Engineering for Building Structures, Seoul, Korea, 1999, pp. 119-128
11 Lee, C.-H. and Park, J.-W, 'Full-scale cyclic seismic testing of column-tree steel moment connections,' Journal of Korea Society of Steel Construction, Vol. 10, No. 4, 1998, pp. 629-639
12 Miller, D. K., 'Lessons learned from the Northridge earthquake,' Engineering Structures, Vol. 20, Nos. 4-6, 1998, pp. 249-260   DOI   ScienceOn
13 Bruneau, M., Uang, C.-M. and Whittaker, A. Ductile Design of Steel Structures-Design of ductile moment-resisting frames, MaGraw-Hill, New York, NY., 1998, pp. 273-380
14 Lee, C.-H., 'Seismic design of rib-reinforced steel moment connections based on equivalent strut model,' Journal of Structural Engineering, ASCE, Vol. 128, No. 9, 2002, pp. 1121-1129   DOI   ScienceOn
15 Uang, C.-M., Bondad, D. and Lee, C.-H., (1998). 'Cyclic Seismic Performance of Haunch Repaired Steel moment Connections: Experimental Testing and Analytical Modeling,' Engineering Structures, Vol. 20, Nos. 4-6, 1998, pp. 552-561   DOI   ScienceOn
16 Yu, Q.-S., Uang, C.-M. and Gross, J., 'Seismic Rehabilitation Design of Steel Moment Connection with Welded Haunch,' Journal of Structural Engineering, ASCE, Vol. 126, No. 1, 2000, pp. 69-78   DOI   ScienceOn
17 Zekioglu, A., Mozaffarian, H., Chang, K. L. and Uang, C.-M. 'Designing After Northridge,' Modern Steel Construction, 37 (3), 1997, pp. 36-42
18 Lee, C.-H., Jeon, S.-W., Kim, J.-H., Kim, J.-H. and Uang, C.-M., 'Seismic performance of reduced beam section steel moment connections: effects of panel zone strength and beam web connection method,' 13th World Conference on Earthquake Engineering, Vancouver, B.C., Canada, August 1-6, 2004, Paper No. 3449
19 Lee, C.-H., Jung, J.-H., Oh, M.-H. and Koo, E.-S., 'Experimental study of cyclic seismic behavior of steel moment connections reinforced with ribs,' Journal of Structural Engineering, ASCE, Vol. 131, No. 1, 2005, pp. 108-118   DOI   ScienceOn
20 Uang, C.-M., Yu, Q.-S., Noel, S. and Gross, J., 'Cyclic Testing of Steel moment Connections Rehabilitated with RBS or Welded Haunch,' Journal of Structural Engineering, ASCE, Vol. 126, No. 1, 2000, pp. 57-68   DOI   ScienceOn
21 Stojadinovic, B., Goel, S. C., Lee, K.-H., Margarian, A. G. and Choi, J.-H, 'Parametric tests on unreinforced steel moment connections,' Journal of Structural Engineering ASCE, Vol. 126, No. 1, 2000, pp. 40-49   DOI   ScienceOn