颜桂云  孙炳楠    （浙江大学建筑工程学院  杭州 310027） 

王泽军  牛荻涛   （西安建筑科技大学土木工程学院 710055）

 

[提要]  采用外加电流对混凝土压弯构件中的钢筋进行了快速锈蚀，通过对锈蚀钢筋混凝土压弯构件抗震性能的试验研究，详细讨论了钢筋锈蚀程度对混凝土压弯构件的初始刚度、延性、承载力降低性能、耗能能力等的影响；从理论上探讨了钢筋锈蚀对构件抗剪承载力的影响，提出了锈蚀钢筋混凝土压弯构件的抗剪承载力计算表达式，建议公式的计算值与试验结果吻合较好。
[关键词]  钢筋锈蚀  混凝土  压弯构件抗震性能  抗剪承载力

This paper carries out accelerated corrosion tests for reinforcing steels embedded in concrete by electrochemical method. Reinforced concrete members with bending and compression loads are experimented and analyzed for its seismic characteristics. Through experiments, the influences of reinforcement corrosion on the initial stiffness, ductility, descent of bearing capacity and energy dissipation of the members are discussed.The influences of reinforcement corrosion on the shear capacity are analyzed theoretically,and calculating formula for the shear strength is proposed. Calcu-lating results by the proposed formulas have good agreement with the experiment results.
Keywords: reinforcement corrosion; RC members; bending-compression loads; seismic behavior; shear strength