- 摘 要
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張偉平 張 譽
（同濟大學土木工程學院 上海 200092）[提要] 采用外加電流加速鋼筋銹蝕的方法，控制試件表面不同銹脹裂縫寬度，通過鋼筋開槽、內(nèi)貼應(yīng)變片的半梁式試驗，對銹后鋼筋混凝土粘結(jié)滑移性能進行了研究，建立了考慮脹裂寬度影響的平均粘結(jié)應(yīng)力-滑移關(guān)系，給出了不同銹蝕脹裂寬度的粘結(jié)強度退化的規(guī)律。
[關(guān)鍵詞] 鋼筋混凝土結(jié)構(gòu) 鋼筋銹蝕 粘結(jié)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
