|主題||MODELING FOR BUCKLING OF REINFORCEMENT CONCRETE PIER|
Deformational capacity of reinforced concrete pier undergoing reversed cyclic loading was studied by carrying out experimental work of modeled piers. It was observed that for specimens which failed in bending, buckling of the reinforcement induced degradation of the load carrying capacity. A model to predict the buckling point in the load-deformation historic curve of the modeled piers was proposed. Buckling point in the load-deformation historic curve posed to occur when the compressive stress of the reinforcement at the compressive side of the pier section exceeds the buckling stress as well as the main crack at the footing top is open. In the analysis, the parameters such as concrete strength, steel strength, size of reinforcement and stirrup interval can be taken into account.