摘要
对用于提速后钢筋混凝土梁疲劳寿命估算的等效等幅应力幅法和极限损伤度法进行了比较分析,并在极限损伤度法中考虑了钢筋混凝土梁疲劳抗力随时间下降带来的影响。
In this paper, the equivalent stress range with constant amplitude method and the limiting damage degree method which are used to evaluate the fatigue life of RC beams after the speed-lifting are analyzed and compared. In the limiting damage degree method the influence of the descending of RC beam's fatigue resistance with time is considered.
出处
《石家庄铁道学院学报》
2004年第2期54-57,共4页
Journal of Shijiazhuang Railway Institute
关键词
等效等幅应力幅
极限损伤度
疲劳寿命
equivalent stress range with constant amplitude
limiting damage degree
fatigue life
