Study on Influence of Performance of Anchorage on Residual Strength and Failure Behavior of RC Beams with Reinforcement Corrosion
By Wei Dong Yuki Murakami, Hideki Oshita, Shuichi Suzuki and Tomoaki Tsutsumi
Concrete Research and Technology,
Vol.22, No.3, Sep. 2011 (Issue 57)
- Synopsis:
- In this study, the experimental estimation of the anchorage performance on characteristics of residual strength and failure behavior of corroded RC beams was carried out. In uniformly corroded RC beams, applied load is transferred to anchorage regions due to the degradation of bond strength. In case of poor anchorage performance, brittle failure occurs at a lower applied load. However, if anchorage performance is improved by the means of arranging stirrups in anchorages, the tensile reinforcements are restricted from pulling out, and the degradation of residual strength is restricted as arch action forms in the beam. Especially when the tensile reinforcements are anchored on the beam ends by steel plates, the degradation of residual strength is restricted remarkably. Thus, it is noted that the anchorage performance is able to have strong influence on the characteristics of residual strength and failure behavior.
- Keywords:
- corrosion of reinforcement, flexural strength, confined effect, shear strength, anchorage performance
