Behavior of a Crack Under Reversed Cyclic Loadingby Yashuhiro Matsuzaki, Univ of Tokyo, Japan,
Hiroshi Fukuyana, Univ of Tokyo, Japan,
Takafumi Iizuka, Univ of Tokyo, Japan,
Hiroshi Noguchi, Univ of Tokyo, Japan,
Abstract: The results of two series of basic experimental studies for opening and closing behavior in RC members are reported. For the first series, axial forces were applied to the specimens in order to represent the constant moment region which appears between tensile clacks. For the second series, the effects of shear slip along a crack on the opening and closing behavior were investigated. From the test results, the opening and closing behavior of a crack in the elastic-plastic deflection range were clarified. The axial load - crack width relation that was obtained from the experiments was modeled in numerical formulae. And the estimation equations for local contact points where a crack started closing and reopening, points of a crack were proposed considering the shear slip.
Subject Headings: Cracking | Load tests | Material tests | Cyclic loads | Model tests | Ultimate strength | Displacement (mechanics) | Cyclic tests
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