摘要
通过5根钢筋混凝土梁的变幅疲劳试验,研究碳/玻璃混杂、碳/玄武岩混杂纤维布加固梁的弯曲疲劳性能,并与玄武岩纤维布加固梁进行了比较。结果表明:在纤维布粘贴层数相同条件下,混杂纤维布加固梁的抗疲劳性能更优,疲劳寿命明显延长。在均方根等效载荷法的基础上,得到了变幅疲劳试验梁的S-N曲线数学表达式,可供工程设计参数。
The variable amplitude test of BC beams was investigated with 5 specimens, in which the flexural fatigue behavior of RC beams strengthened with carbon/glass hybrid fiber sheets and carbon/basalt hybrid fiber sheets was studied, and compared with that of RC beams strengthened with basalt fiber sheets. Experimental results showed that the anti-faigue properties of RC beams stengthened with hybrid fiber sheets was better, and the fatigue life was significantly prologed. Based on the root mean square（RMS） method, the S - N curves formula on variable amplitude fatigue was proposed, which may be reference for the engineering design.
出处
《工业建筑》
CSCD
北大核心
2012年第6期77-82,共6页
Industrial Construction
基金
九江学院重点资助科研项目(2011KJ01)
