철근콘크리트 보의 균열 및 처짐 거동 특성에 관한 실험적 고찰

Experimental Verification on the Characteristics of Cracking and Deflection Behavior of Reinforced Concrete Beams

As various loads are applied to a reinforced concrete beam, cracks may occur by the influence of shear and bending moments. These cracks propagate as the applied loads are increased. In addition, the deflection of the reinforced beam is also increased at the same time. Even though it is commonly accepted that the cracking and the deflection of a reinforced concrete beam are very closely related, many studies have not been conducted to provide basic data and to develop the relationship between them. In this study total seventeen specimens subjected to bending were tested with different concrete strength, coverage, amount of steel and de-bonding bars. The effects of these parameters on the relationship between cracking and deflection were carefully checked and analyzed.