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Static Behavior of Large Stud Shear Connectors  

Lee, Pil Goo (RIST 토목구조연구팀)
Shim, Chang Su (중앙대학교 토목학과)
Yoon, Tae Yang (RIST 토목구조연구팀)
Publication Information
Journal of Korean Society of Steel Construction / v.15, no.6, 2003 , pp. 611-620 More about this Journal
Abstract
Shear studs with a diameter of 19mm or 22mm are typically used in steel-concrete composite bridge. For the simplification of details in steel bridges, the convenience of removing concrete slab, and the efficient distribution of shear pockets for precast decks, large studs can be an excellent alternative. Through push-out tests on large stud shear connectors that transcend the limitation of current design codes, static behavior was investigated and comparisons with design equations performed. The shear stiffness of the connectors in elastic range and trilinear load-slip curves were proposed after shear tests on 25mm, 27mm, and 30mm studs. The ultimate slip capacity and ultimate strength of large studs were also evaluated, with the test results revealing conservative values for the design shear strength in Eurocode-4. For 30mm stud shear connectors, the welding quality and bearing capacity of concrete slab should be improved.
Keywords
Large stud shear connector; shear stiffness; load-slip curve; ultimate strength;
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