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

Abstract

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.

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