Failure Mechanism Of RC Beam Under Reversed Cyclic Loading
After Flexural Yielding Caused By Lateral Strain Accumulation In
Plastic-hinging Region
Author(s)
H. Kinugasa, S. Nomura
Abstract
Failure mechanism of RC beam under
reversed cyclic loading after flexural yielding
caused by lateral strain accumulation in
plastic-hinging region
H. Kinugasa, S. Nomura
Faculty of Science and Engineering, Department of Architecture,
Science University of Tokyo, Japan
Abstract
The purpose of this paper is to show the existence of a new shear failure
mode which is caused by reversed cyclic loading after flexural yielding.
Under reversed cyclic loading, shear-resisting system in the plastic-hinging
region repeats temporary disappearance and rebuilding. The temporary
disappearance is caused by temporary opening of all the cracks just after
changing loading direction. The temporary disappearance generates residual
lateral strain in the plastic-hinging region. The increase in the residual lateral
strain expands the temporary disappearance and the expanded temporary
disappearance generates more lateral strain. This failure mode is caused by
the abnormal expansion of the temporary disappearan
Keywords
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