摘要
采用已有的纤维增强复合材料(FRP)加固RC梁静载及常幅疲劳荷载数据,通过剩余寿命和剩余强度两种方法来预测试验梁在随机载荷作用下的疲劳寿命。为验证预测结果的准确性,制作了12根FRP加固RC梁,通过MTS疲劳试验机实现对试验梁的随机疲劳实验,并将实验结果与理论计算值比较。结果表明,采用剩余强度的方法预测试验梁的随机疲劳寿命更加接近实验结果。
In this paper, there are two kinds of methods is developed for predicting the fatigue lives of RC structures strengthened with carbon fiber laminate under random loads base on residual life and residual strength model. To discuss the accuracy of the predicting model for the fatigue lives, 12 RC beams strengthened with FRP are produced and the fatigue tests are carried out on the MTS810 testing system. Comparing with the test results, the predicted values based on residual strength model is approximately corresponding with test result
出处
《工程质量》
2014年第7期32-35,共4页
Construction Quality
基金
国家自然科学基金(10672060)
广东省自然科学基金(07006538)资助项目的部分研究内容
