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Evaluation of Static Strength of Mixed Stud Shear Connection in Double Composite Bridges  

Kim, Hyun Ho (중앙대학교 토목공학과)
Shim, Chang Su (중앙대학교 토목공학과)
Yun, Kwang Jung (중앙대학교 토목공학과)
Lee, Pil Goo (RIST 토목구조연구팀)
Publication Information
Journal of Korean Society of Steel Construction / v.17, no.5, 2005 , pp. 549-559 More about this Journal
Abstract
A railway bridge with a double composite section is proposed to enhance the structural performance of existing two-girder bridges because the governing design parameter of railway bridges is the flexural stiffness. The concrete deck in negative moment regions is neglected in the design of continuous composite bridges assuming the concrete slab has no resistance to tension. Therefore, the flexural stiffness of the composite section in the negative moment region is reduced resulting in the increase of the depth of the steel section. In order to resolve this disadvantage, several methods are suggested and the double composite section is one of the excellent solutions for extending the span length and increasing the flexural stiffness. In this study, push-out tests on lying studs and mixed stud shear connection with lying and vertical studs were performed to investigate the behavior of the shear connection in the double composite section. Static strength of the shear connection was evaluated through the test results and numerical analyses.
Keywords
double composite; lying stud; mixed stud; splitting strength; load-slip curve;
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