[1]傅中秋,张呈奕,吉伯海,等.钢桥面板疲劳裂纹特征定量检测方法研究[J].西安建筑科技大学学报：自然版,2016,48(01):72-76,88.[doi:10.15986/j.1006-7930.2016.01.012]
　FU Zhongqiu,ZHANG Chengyi,JI Bohai,et al.Study on the quantitative detecting method of fatigue crack features in orthotropic steel deck[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2016,48(01):72-76,88.[doi:10.15986/j.1006-7930.2016.01.012]
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钢桥面板疲劳裂纹特征定量检测方法研究()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年01期
页码:
72-76,88
栏目:
出版日期:
2016-02-28

文章信息/Info

Title:
Study on the quantitative detecting method of fatigue crack features in orthotropic steel deck
文章编号:
1006-7930(2016)01-0072-05
作者:
傅中秋; 张呈奕; 吉伯海; 袁周致远
河海大学土木与交通学院，江苏 南京210098
Author(s):
 FU Zhongqiu;  ZHANG Chengyi;  JI Bohai;  YUANZHOU zhiyuan
 College of Civil and Transportation Engineering, Hohai University, Nanjing 210098,China
关键词:
钢桥面板; 疲劳裂纹特征; 定量检测; 超声检测
Keywords:
orthotropic steel deck;  fatigue crack features;  quantitative detection;  ultrasonic testing
分类号:
U441.4
DOI:
10.15986/j.1006-7930.2016.01.012
文献标志码:
A
摘要:
为研究钢桥面板疲劳裂纹特征的定量检测方法，对10 个试件的疲劳裂纹进行超声波定量检测试验．考虑疲劳试件裂纹特征，改进已有人工裂纹特征的超声波检测方法，对比检测结果与实际疲劳断面，验证检测方法效果．试验结果表明：取裂纹开口回波代替裂纹尖端回波，采用1/3 测长法检测疲劳裂纹长度具有更好的效果；裂纹长度检测值具有较高的精度，可
认为检测值等于实际值；裂纹深度、角度检测值均与实际疲劳试件断面特征吻合较好，修正误差后可作为安全评定的参考．
Abstract:
In order to research the quantitative detecting method of fatigue crack features in orthotropic steel deck, fatigue cracks of 10 specimens were quantitative detected by ultrasonic testing. Considering crack features of fatigue specimens, existing ultrasonic testing method to detect artificial cracks features was improved. Detection results were compared with real fatigue fracture surfaces. The effect of quantitative detecting method was verified. The test results show that replacing echo of crack tip with echo of crack opening makes 1/3 length measurement method better on fatigue crack length detection. Measured values of crack length have higher accuracy, and can be considered as real values. Measured values of crack depth and angle are both in good agreement with features of real fatigue specimen fracture surfaces, which can be used as reference for safety assessment after correcting error.

参考文献/References:

[1] 唐亮, 黄李骥, 刘高, 等. 正交异性钢桥面板足尺模型疲劳试验[J].土木工程学报,2014,47(3):112-122.
TANG Liang, HUANG Liji, LIU Gao, et al. Fatigue experimental study of a full-scale steel orthotropic deck model [J]. China Civil Engineering Journal, 2014, 47(3):112-122.
[2] 曾勇, 向中富, 于福, 等. 大跨度悬索桥钢加劲梁典型病害及维修策略[J].重庆交通大学学报(自然科学版),2012,31(S1):700-703+709.
ZENG Yong, XIANG Zhongfu, YU Fu, et al. Typical diseases and maintenance strategies for steel girder of large-span suspension bridge [J]. Journal of Chongqing Jiaotong University(Natural Science Edition), 2012,31(S1): 700-703+709.
[3] 曾志斌. 正交异性钢桥面板典型疲劳裂纹分类及其原因分析[J].钢结构,2011,26(143):9-15,26.
ZENG Zhibin. Classification and reasons of typical fatigue cracks in orthotropic steel deck [J]. Steel Construction,2011, 26(143): 9-15, 26.
[4] 高翔. 公路钢桥焊缝超声波检测标准研究[D]. 西安:长安大学,2012.

备注/Memo

备注/Memo:
收稿日期：2015-04-16 修改稿日期：2016-02-12
基金项目：国家自然科学基金项目(51278166，51478163)；江苏省交通科学研究计划项目(2014Y02)
作者简介：傅中秋(1983－)，男，博士，副教授，主要从事钢桥疲劳方面研究．E-mail:fumidaut@163.com
更新日期/Last Update: 2016-04-01