THE ULTIMATE SHEAR STRENGTH OF THE BRACKETED PARTS OF REINFORCED CONCRETE BEAMS
1973 年 1973 巻 210 号 p. 93-105
詳細
1973 年 1973 巻 210 号 p. 93-105
The beams with brackets at their ends usually fail as a result of shear compression. The ultimate strength of this mode of failure of reinforced concrete beams was investigated. The beam-truss structure was proposed as the model to express the relation between the shear force acting on the reentrant corner of the bracketed parts of beams and the force in inclined steel. Equations of ultimate strength are derived. The ultimate strength is evaluated with regard to three cases, depending on the crushing of concrete or yield of steel. The beams were tested under moving load applied at various points along the beam until failure occured to simulate actual field conditions. The theoretical values are presented with the comparison of the test results, and show reasonably good agreement. Design approach is also described.
