基于电阻法的钢桥疲劳裂纹检测方法研究

doi:10.3969/j.issn.1674-0696.2014.03.07

重庆交通大学学报（自然科学版） ›› 2014, Vol. 33 ›› Issue (3): 27-31.DOI: 10.3969/j.issn.1674-0696.2014.03.07

基于电阻法的钢桥疲劳裂纹检测方法研究

袁周致远，吉伯海，傅中秋，刘荣，程苗

河海大学土木与交通学院，江苏南京 210098

收稿日期:2013-04-13 修回日期:2014-07-22 出版日期:2014-06-15 发布日期:2015-01-22
作者简介:袁周致远(1990—)，男，浙江舟山人，硕士研究生，主要从事钢桥维护方面的研究。E-mail:Super.yzzy@gmail.com
基金资助:
国家自然科学基金项目(51278166) ;高等学校博士学科点专项科研基金项目(2012009411 0009) ;江苏省交通科学研究计划项目 (2011Y09-1 ,2012Y13)

Deck Fatigue Crack Detection ?ased on Electrical Resistance Method

YuanZhou Zhiyuan , Ji Bohai , Fu Zhongqiu , Liu Rong , Cheng Míao

College of Civil & Transportation Engineering , Hohai University , Nanjing 210098 , Jiang su , China

Received:2013-04-13 Revised:2014-07-22 Online:2014-06-15 Published:2015-01-22

摘要/Abstract

摘要： 基于钢桥面板裂纹出现前后的电阻变化，分析了裂纹附近电阻变化规律及板宽、测点问距和测点布置方式对检测的影响，研究了基于电阻法原理的钢桥疲劳裂纹检测方法。研究表明:电极间距越小检测精度越高;大电极间距适合裂纹位置的初步判断，小电极间距适合裂纹的精确定位。设计了裂纹附近测点分布位置，提出3种电阻法检测的实用方法，建立了疲劳断面损伤率及裂纹等效深度计算公式。U肋部位疲劳裂纹检测试验结论表明:基于电阻法的钢桥裂纹检测技术可行，且具有较好的精度。

关键词: 桥梁工程, 钢桥面板, 疲劳裂纹检测, 电阻法, 断面损伤率

Abstract: Based on the resistance change before and after crack occunence on steel deck , the law of resistance variation near crack , the influences of deck width , the spacing of measuring points and the anangement of measuring points were analyzed. And the deck fatigue crack detection based on electrical resistance method was studied. It is shown that the smaller the spacing of electrode is , the higher accuracy of the detection is. Large electrode spacing is suitable for preliminary meas urement of the position of the crack occunence , and the small one is suitable for accurate location. The distribution of measuring points was designed , and three kinds of pragmatic resistance measurement methods were presented. Formulas of fracture damage rate and equivalent depth of crack were established. The results regarding the fatigue crack detection of U rib show that the deck fatigue crack detection based on electrical resistance method is feasible and highly precise

Key words: bridge engineering, deck, fatigue crack detecting, electrical resistance method, fracture damage rate

中图分类号:

U448.36

袁周致远，吉伯海，傅中秋，刘荣，程苗. 基于电阻法的钢桥疲劳裂纹检测方法研究[J]. 重庆交通大学学报（自然科学版）, 2014, 33(3): 27-31.

YuanZhou Zhiyuan , Ji Bohai , Fu Zhongqiu , Liu Rong , Cheng Míao. Deck Fatigue Crack Detection ?ased on Electrical Resistance Method[J]. Journal of Chongqing Jiaotong University(Natural Science), 2014, 33(3): 27-31.

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基于电阻法的钢桥疲劳裂纹检测方法研究

Deck Fatigue Crack Detection ?ased on Electrical Resistance Method

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