摘要
为研究CFRP板加固钢梁的疲劳寿命,对CFRP板加固前钢梁的损伤量以及加固后钢梁剩余的疲劳寿命计算方法进行了理论研究,采用线弹性断裂力学进行分析,简单易行且具有较高精度,同时以现有文献提供的实验数据进行验证;采用高斯函数进行拟合,计算出的结果与试验值非常接近;结果表明:所建立的CFRP板加固钢梁的疲劳寿命计算式具有较强的适用性,与试验数据吻合程度较好.
In order to investigate the fatigue life of steel beam reinforced with CFRP sheet, this paper studies the damage of steel beam before reinforcement and the method of remaining fatigue life calculation of the beam after reinforcement. The linear elastic fracture mechanics analysis is simple and feasible and has high precision.At the same time, we analyze the experimental data in the existing literature, by Gaussian function fitting, the results and the experimental value is very close. It turns out that the formula of the fatigue life of steel beam reinforced with CFRP sheet for computing is an effective way and in good agreement with the experimental data.
出处
《广西科技大学学报》
2015年第4期85-90,共6页
Journal of Guangxi University of Science and Technology
基金
国家自然科学基金项目(51108099
51168006)资助
关键词
CFRP板
加固
断裂力学
疲劳
高斯函数
CFRP sheet
reinforcement
fracture mechanics
fatigue
Gaussian function
