Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Seismic Performance of CFT column to H beam Connections Reinforced with T-stiffeners

T-스티프너로 보강된 CFT 기둥-H형강보 접합부의 내진성능

  • Received : 2003.08.13
  • Accepted : 2003.10.13
  • Published : 2003.12.27
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Abstract

The paper presented the seismic performance of T-stiffener moment connections for use in steel moment-resisting frames. The connections were strengthened by welding the vertical and horizontal clement of the T-stiffener to the beam flange and column f1ange. Finite clement analysis and experiments were conducted to determine the behavior of T-stiffener-reinforced connections. The results of the finite element analysis confirmed the effectiveness of the T-stiffener, whose horizontal element lengthened to mitigate local stress concentrations of the beam flange on the horizontal stiffener. Full-scale specimens were also tested cyclically to study hysteresis behavior. The main parameters used were the ratio of the T-stiffener to beam strength and the shape of the horizontal element. As the length of the horizontal element increased, the deformation capacity of the connections enhanced. Likewise, all specimens behaved according to the Ramberg-Osgood curve and showed stable hysteresis behavior.

이 논문은 모멘트 저항골조의 접합부에 이용하기 위한 T-스티프너로 보강된 접합부의 내진성능에 관해 나타냈다. 접합부는 보플랜지와 기둥플랜지에 T-스티프너의 수평 및 수직요소가 용접되어 보강되었다. T-스티프너 접합부의 거동을 명확히 파악하기 위해 유한요소해석과 실험이 수행되었다. 유한요소해석결과, T-스티프너의 수평요소의 길이가 길어짐에 따라 T-스티프너는 보플랜지와 수평요소사이의 응력집중을 줄이는데 효과적임을 나타냈다. 또한, 접합부의 이력 거동을 파악하기 위해 실대형 접합부 실험을 실시하였다. 주요 변수는 보에 대한 T-스티프너의 강도비와 수평요소의 형상이다. 수평요소의 길이가 길수록 접합부의 변형능력은 증가하였고, 모든 실험체는 방추형의 안정된 이력거동을 나타내었다.

Keywords

References

  1. Interim Guidelines evaluation, repair, modification and design and design of welded steel moment frame structures, FFMA 267/SAC95-02 SAC
  2. FEMA-355D, State of the art report on connction performance
  3. Journal of Structual Engineering, ASCE v.128 no.4 Cover-plate and Flange-plate steel moment-resisting connections Kim, T.;Whittaker, A.S.;Gilani, A.S.J.;Berto, V.V.;Takhirov, S.M.
  4. Modification of existing frame connections for seismic resistance, Steel Design Guide Series Gross, J.L.;Engelhardt, M.D.;Uang, C.M.;Kasai, K.;Iwankiw, N.R.
  5. Journal of Structural Engineering, ASCE v.123 no.1 Analutical modeling of dual panel zone in haunch repared steel MRFs Lee, C.H.;Uang, C.M.
  6. Allowable Stress Design, and Horizontal Load-Carrying Capacity. AIJ Standard for Structural Calculation of Steel Reinforced Concrete Structures
  7. Journal of Constructional Steel Research v.57 no.10 Experimental behavior of steel beam to CFT column connections Elremaily, A.;Azizinamini, N.
  8. Engineering Structure v.24 Cyclic behavior of concrete filld steel tubular column to steel beam conncetions Beutel, J.;Thambiratnam, D.;Perera, N.
  9. Journal of structural and Construction Engineering, AIJ v.534 no.8 Experimental study on the statical characteristics of perimeter beam-to-SHS column connections using vertical stiffener plates Masuda, H.;Tanaka, A.;Ishimura, R.;Hirai, K.;Sasaji, S.
  10. Structural performance of H-shaped steel beam to square tube steel column connection using vertical stiffeners, Summaries of technical papers of Annual Meeting Kimura, J.;Matsui, C.
  11. Proceedings of Pacific Structural Steel Conference (PSSC) Test of concrete-filled box column to H-beam connections Shin, K.J.;Oh, Y.S.;Moon, T.S.
  12. CFT column to H-beam connections with T-stiffeners, Report. No. STRESS-98-07 Oh, Y.S.
  13. Engineering Structure v.23 no.9 Hystersis behavior of CFT column to H-beam connections with external T-siffeners and penetrated elements Moon, T.S.;Oh, Y.S.;Shin, K.J.;Kang, C.H.
  14. Second International Symposium on Steel Structures CFT column to beam flange connections with external stiffeners Kang, Chang-Hoon;Chae, Young-Suk;Shin, Kyung-Jae;Oh, Young-Suk;Moon, Tae-Sup
  15. KSSC v.13 no.6 Bahavior of CFT column to H-beam full-scale connections with external T-stiffener Kim, Y.J.;Kang, C.H.;Shin, K.J.;Oh, Y.S.;Moon, T.S.
  16. ABAQUS/Standard user's manual.
  17. Journal of structural and Construction Engineering, AIJ v.523 no.9 Relation between deformation copacity fo beam at steel beam-to-column connection and joint efficient Matsumoto, Y.;Akiyama, H.;Yamada, S.
  18. Plasticity for Structural Engineers Chen, W.F.;Han, D.J.
  19. SAC Protocol for Fabrication, Inspection, Testing, and Documentation of Beam-Column Connection Tests and Other Experimental Specimens, Report No. SAC/BD-97/02 SAC
  20. Engineering Structure v.20 no.4-6 Reinforcing of steel moment connections with cover plates: benefits and limitations Engelhardt, M.D.;Sabol, T.A.
  21. Seismic provisions for stuctural steel buildings