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。
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.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第6期734-738,共5页
Journal of Nanjing University of Science and Technology
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
electrochemical corrosion
corrosion
bond-slip
bar corrosion rate
fatigue
ultimate bond strength
