Study of the shear fatigue of reinforced concrete beams : over reinforced concrete beam

This investigation, involving the testing specimens-each 6 specimens for the steel and deformed steel bar over reinforced concrete beams-subjected to 2 concentrated loads in the state of a/d≒1 is to research for the shearing fatigue limits of over reinforced concrete beams subjected to the shearing repeated load as case of under reinforced concrete beams of the last report. As the last report, the shearing fatigue limits of the steel and deformed steel bar over reinforced concrete beams are thought to be appoximately 45 percent for the static failure loads from N-S curve and the variations of strain, etc.