张伟平    张  誉
    （同济大学土木工程学院  上海 200092）

[提要]  采用外加电流加速钢筋锈蚀的方法，控制试件表面不同锈胀裂缝宽度，通过钢筋开槽、内贴应变片的半梁式试验，对锈后钢筋混凝土粘结滑移性能进行了研究，建立了考虑胀裂宽度影响的平均粘结应力-滑移关系，给出了不同锈蚀胀裂宽度的粘结强度退化的规律。
[关键词]  钢筋混凝土结构  钢筋锈蚀  粘结滑移

The bond-slip test is conducted on R.C.half-beams to study the influence of reinforcing bar corrosion and cracking on bond behavior. The stages of corrosion are achieved by impressing direct current for increasing periods on the tested bars. The bars are instrumented with strain gauge placed in a machined axial cavity. Based on the experimental results, the boncl-slip relationship between corroded steel bars and concrete is established.
Keywords:  reinforcement corrosion; bond-slip; R.C.structure