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Evaluation of Static Strength of Group Stud Shear Connection in Precast Concrete Deck Bridges  

Shim, Chang Su (중앙대학교 토목공학과)
Jeon, Seung Min (중앙대학교 토목환경공학과)
Kim, Dong Wook (중앙대학교 토목환경공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.20, no.2, 2008 , pp. 333-345 More about this Journal
Abstract
concrete deck bridges are increasingly aplied to twin- girder bridges and open-stel box girder bridges.One of the most dificult isues in the design of shear conect ors is the mater of achieving ful composite action. Many connectors in smal area require a significant section los of precast decks resulting in difficult reinforcement details. In this closer spacing than the required minimum spacing in the design codes was evaluated through static tests. Test results s howed that the ultimate strength decreased as the conector spacing was reduced. The strength enhancement was observed due to aditional reinforcement for precast slabs or for shear pockets. Thus, the design of group stud shear connection needs to anticipate failure modes and the conector failure should be induced. Based on the test results, an empirical equation consi dering stud spacing was proposed to evaluate the ultimate strength of group stud shear conection. Fatigue tests showed n o reduction in fatigue life of the group stud shear conection in the range of this research. Details of the precast decks wer e enhanced using the findings of the study.
Keywords
precast desk bridge; group stud shear connection; connector spacing; failure mode; ultimate strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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