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

Sim, Chang Su (중앙대학교 토목공학과)
Kim, Hyeon Ho (중앙대학교 건설환경연구소)
Han, Jeong Hoon (중앙대학교 토목공학과)
Lee, Pil Goo (포항산업과학연구원, 강구조연구소)
Publication Information
Journal of Korean Society of Steel Construction / v.18, no.4, 2006 , pp. 405-416 More about this Journal
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.
Keywords
preflex; horseshoe connector; bar shear connector; shear strength; bearing failure; shear failure;
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