| 疲劳荷载下钢筋锈蚀混凝土构件粘结性能试验研究 |
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| 引用本文： | 范进,董福兴.疲劳荷载下钢筋锈蚀混凝土构件粘结性能试验研究[J].南京理工大学学报(自然科学版),2009,33(6). |
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| 作者姓名： | 范进 董福兴 |
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| 作者单位： | 南京理工大学,土木工程系,江苏,南京,210094 |
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| 摘 要： | 为探索钢筋锈蚀混凝土构件的疲劳性能,对疲劳荷载作用下钢筋锈蚀混凝土构件的粘结滑移性能进行了试验研究,依据实验结果分析了钢筋锈蚀率对构件的粘结性能退化的影响规律.研究表明:疲劳荷载强度相同,极限粘结强度和滑移差值随着钢筋锈蚀率的增加,呈现出先升后降的趋势,即当钢筋锈蚀率小于2%时,其疲劳极限粘结强度上升;而当钢筋锈蚀率大于4%时,其疲劳极限粘结强度下降.根据试验结果拟合极限粘结强度的计算公式,计算结果与试验结果吻合得较好.
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| 关 键 词： | 电化学腐蚀 锈蚀 粘结滑移 钢筋锈蚀率 疲劳 极限粘结强度 |
Bond-slip Fatigue Experimental Study on Corroded Reinforcement Concrete Members Under Cyclic Loading |
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| FAN Jin,DONG Fu-xing.Bond-slip Fatigue Experimental Study on Corroded Reinforcement Concrete Members Under Cyclic Loading[J].Journal of Nanjing University of Science and Technology(Nature Science),2009,33(6). |
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| Authors: | FAN Jin DONG Fu-xing |
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| Abstract: | In order to explore the fatigue performance of corroded reinforced concrete(RC) members, the bond-slip performance of corroded RC members under cyclic loading is experimentally researched. The influencing rule of corrosion rate on the bond behavior degradation of RC members under the fatigue load is analyzed. The result shows that the ultimate bond strength and the slippage rise at first and then drop with the increase of the corrosion rate under the same fatigue load. The ultimate bond strength rises when the corrosion rate is lower 2% and drops when the corrosion rate is higher 4%. Based on the test data, the computation formula of the ultimate bond strength is obtained, and the computation result agrees with the test data. |
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| Keywords: | electrochemical corrosion corrosion bond-slip bar corrosion rate fatigue ultimate bond strength |
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