%0 Journal Article
%T 高强钢筋疲劳试验小子样空间的Bootstrap分析方法<br>The Bootstrap analysis method of high strength steel fatigue tests under small sample space
%A 王晓光
%A 夏耀
%A 盛兴旺&lt
%A br&gt
%A WANG Xiaoguang
%A XIA Yao
%A SHENG Xingwang
%J 铁道科学与工程学报
%D 2016
%X Bootstrap方法是一种利用再生样本来估计未知统计量估计值分布的方法。通过Bootstrap法的再抽样方法,可以拟合不同可靠度下的P-S-N曲线,同时给出其相应的置信区间。以高速铁路用HRB400高强钢筋闪光对焊接头的疲劳试样数据为例,运用t分布调整法、ASTM法以及Bootstrap方法,计算高强钢筋P-S-N曲线的置信带。通过三种方法算例的对比,验证了Bootstrap方法在小子样空间下计算疲劳寿命置信区间的优势。<br>The Bootstrap method is a way which renewable samples is used to estimate the distribution of unknown statistic. By using the sampling techniques of Bootstrap method, the P-S-N curve of different reliability and its corresponding confidence interval can be got. Based on fatigue specimen data of high strength reinforced flash butt , and using the calculation of three methods of T distribution adjustment method, ASTM method and the Bootstrap method, the confidence interval of P-S-N curve is obtained. Through the comparison of three methods, it verified the advantages of Bootstrap method to calculate the confidence interval of fatigue life under small sample space
%K 疲劳试验
%K 小子样空间
%K Bootstrap方法
%K P-S-N曲线
%K 置信区间&lt
%K br&gt
%K fatigue test
%K small sample space
%K Bootstrap method
%K P-S-N curve
%K confidence interval
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_311842