Evaluation of Ultimate Strength of Shear Connection in Steel Embedded Composite Girders

강재매입형 합성거더 전단연결부의 극한강도 평가

  • 심창수 (중앙대학교 토목공학과) ;
  • 김현호 (중앙대학교 건설환경연구소) ;
  • 한정훈 (중앙대학교 토목공학과) ;
  • 이필구 (포항산업과학연구원, 강구조연구소)
  • Received : 2006.04.14
  • Accepted : 2006.07.14
  • Published : 2006.08.27


In composite girders with steel embedded in concrete as preflex beams, horseshoe connectors and bar connectors are commonly used to achieve composite action. Considering the requirements on the concrete cover in the thin concrete part surrounding a steel member, it has limitations with respect to the use of stud shear connectors, and significant bond and friction resistance can be generated. High horizontal shear strength between the casing concrete and the steel section is needed to introduce prestress to the concrete section in the form of preflex beams.In this paper, experiments on the evaluation of the static strength of horseshoe connectors and bar connectors were conducted and the effects of bonds were also considered. Based on the test results, current design codes were estimated and more general design guidelines that consider the design concept of Eurocode were proposed for the connectors. A strength evaluation according to failure and compared with the test results.


  1. 민진, 정인근, 심창수, 정영수 (2005), 강재 매입형 합성기둥의 합성작용에 관한 실험, 한국콘크리트학회 논문집, 제17권 3 호, pp.393-400
  2. 장승필, 심창수 (2005), 합성구조론, 구미서관
  3. 프리플렉스 합성형 표준시방서 및 동해설(안), 대한토목학회, 1986
  4. 프리플렉스 합성형 철도교 표준시방서(안), 대한토목학회, 1987
  5. 철도설계기준 (철도교편), 건설교통부, 2004
  6. Baltay P., Gjelsvik A. (1990) Coefficient of Friction for Steel on Concrete at High Normal Stress, Journal of Materials in Civil Engineering, Vol. 2, No.1, pp. 46-49 https://doi.org/10.1061/(ASCE)0899-1561(1990)2:1(46)
  7. BS5400-5 (1979), Steel, concrete and composite bridges, Part 5 : Code of practice for design of composite bridges, BSI
  8. Eurocode 4 (1994) Design of composite steel and concrete structures, Part 1-1 : General rules and rules for buildings, CEN. pp.72-108
  9. Evans, R.H., White, A.D., Ford, J., Lash, S.D., Nicholas, R.J., Lipsky, A., Leung, K.W., Bruggeling, A.S.G., Blake, R.J., Haseltine, B.A. (1966) Discussion; Characteristics of Preflexed Prestressed Concrete Beams, ICE Proceedings, Vol. 34, pp. 266-284
  10. Kennedy, S.J. (1984) End Connection Effects on the Strength of Concrete Filled HSS Beam Columns, MS. Thesis, University of Alberta, Canada
  11. Olofsson U., Holmgren M. (1992) Using a Servo Hydraulic Tension-Torsion Machine for Measurement of Friction at Low Sliding Speed, Swedish National Testing and Research Institute, Sweden
  12. Virdi K.S., Dowling P.J. (1980) Bond Strength in Concrete Filled Steel Tubes, IABSE Proceedings, Zurich, Switzerland, pp.125-139