Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Interface Shear Transfer for High Strength Concrete and High Strength Shear Friction Reinforcement
The shear transfer at construction joints for members was investigated experimentally using twenty-six direct shear type specimens in order to study the effects of high strength concrete, high strength shear friction reinforcement and interface roughness. The displacement-controlled cyclic loading was applied and shear stress transferred along the interface was separated into the contributions of concrete and dowel actions. In the dowel action, the flexural action dominates the shear-frictional reinforcement and the average tensile strain at the interface did not reach the yield strain at the peak stress. The assumption that reinforcement had yielded at the peak stress was not met in the test. In the concrete action, stress transfer depends on the concrete strength and the surface roughness and the combined effect of concrete strength and surface roughness needs to be considered in a design equation. If earthquake forces act cyclically to the interface, it is not safe to count on the experimental results based on the monotonic loading test since the shear resistance in the direction opposite to the virgin direction could become smaller. This effect is pronounced for specimens with rough interface and considered to be caused by the wearing of the interlocking mechanism.
Interface Shear Transfer for High Strength Concrete and High Strength Shear Friction Reinforcement
The shear transfer at construction joints for members was investigated experimentally using twenty-six direct shear type specimens in order to study the effects of high strength concrete, high strength shear friction reinforcement and interface roughness. The displacement-controlled cyclic loading was applied and shear stress transferred along the interface was separated into the contributions of concrete and dowel actions. In the dowel action, the flexural action dominates the shear-frictional reinforcement and the average tensile strain at the interface did not reach the yield strain at the peak stress. The assumption that reinforcement had yielded at the peak stress was not met in the test. In the concrete action, stress transfer depends on the concrete strength and the surface roughness and the combined effect of concrete strength and surface roughness needs to be considered in a design equation. If earthquake forces act cyclically to the interface, it is not safe to count on the experimental results based on the monotonic loading test since the shear resistance in the direction opposite to the virgin direction could become smaller. This effect is pronounced for specimens with rough interface and considered to be caused by the wearing of the interlocking mechanism.
Interface Shear Transfer for High Strength Concrete and High Strength Shear Friction Reinforcement
Kono, Susumu (Autor:in) / Tanaka, Hitoshi (Autor:in) / Watanabe, Fumio (Autor:in)
International Conference on High Performance Materials in Bridges ; 2001 ; Kona, Hawaii, United States
High Performance Materials in Bridges ; 319-328
05.09.2003
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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