[1]袁周致远,吉伯海,傅中秋.钢结构疲劳裂纹合理止裂孔形状研究[J].南京理工大学学报(自然科学版),2017,41(05):556.[doi:10.14177/j.cnki.32-1397n.2017.41.05.003]
 Yuanzhou Zhiyuan,Ji Bohai,Fu Zhongqiu.Study on reasonable stop-hole shape for fatiguecrack in steel structure[J].Journal of Nanjing University of Science and Technology,2017,41(05):556.[doi:10.14177/j.cnki.32-1397n.2017.41.05.003]
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钢结构疲劳裂纹合理止裂孔形状研究()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
41卷
期数:
2017年05期
页码:
556
栏目:
出版日期:
2017-10-31

文章信息/Info

Title:
Study on reasonable stop-hole shape for fatiguecrack in steel structure
文章编号:
1005-9830(2017)05-0556-06
作者:
袁周致远吉伯海傅中秋
河海大学 土木与交通学院,江苏 南京 210098
Author(s):
Yuanzhou ZhiyuanJi BohaiFu Zhongqiu
College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China
关键词:
钢结构 疲劳裂纹 止裂孔 应力集中 腰圆形
Keywords:
steel structures fatigue cracks stop-holes stress concentration lumbar round shapes
分类号:
O343; U441
DOI:
10.14177/j.cnki.32-1397n.2017.41.05.003
摘要:
为了提高钢结构疲劳裂纹的钻孔止裂效果,研究了不同止裂孔形状的止裂性能。通过建立二维平面有限元模型,对比分析了不同孔形下的孔边应力分布及应力集中效应,提出了一种结合直线与圆曲线的腰圆形止裂孔(近跑道形状),并分析了其打孔参数对止裂效果的影响,得到了腰圆孔打孔参数设计方法。结果表明,增大腰圆形止裂孔的面积、减小圆弧半径能够进一步降低孔边应力集中,同时采用缓和曲线对该止裂孔的曲率突变位置进行过渡,能够改善止裂孔的受力性能,降低其应力突变,止裂效果更好。
Abstract:
In order to improve the effectiveness of the fatigue crack stop-hole for steel structure,the crack-stopping performance of different stop-hole shapes is analyzed.Based on the two dimensional finite-element model,the laws of stress distribution and the effects of stress concentration at the edge of stop-holes are compared for different stop-hole shapes.A lumbar round(LR)shape stop-hole(similar to the lane shape)combined with straight line and circle curve is proposed.The crack-stopping effectiveness of the LR stop-hole is further analyzed based on the drilling parameters,and a design method for the LR stop-hole is then established.The results indicate that the stress concentration decreases further when increasing the size of the LR stop-hole or decreasing its radius.And the stress performance of the LR stop-hole can be improved when applying the spiral transition curve at the position of the abrupt curvature,resulting in better crack-stopping effectiveness.

参考文献/References:

[1] 施刚,班慧勇,石永久,等.高强度钢材钢结构的工程应用及研究进展[J].工业建筑,2012,42(1):1-7.
Shi Gang,Ban Huiyong,Shi Yongjiu,et al.Engineering application and recent research progress on high strength steel structures[J].Industrial Construction,2012,42(1):1-7.
[2]姜竹生,瞿涛,吕磊,等.钢箱梁典型病害分析及其检测与维护技术研究[J].防灾减灾工程学报,2011,31(5):572-577.
Jiang Zhusheng,Qu Tao,Lv Lei,et al.Research on typical defects analysis of steel box girder and its testing and maintenance technology[J].Journal of Disaster Prevention and Mitigation Engineering,2011,31(5):572-577.
[3]李金泉,杨化仁,罗来科.16Mn钢焊接件疲劳裂纹萌生与扩展观察[J].南京理工大学学报,2002,26(1):61-64.
Li Jinquan,Yang Huaren,Luo Laike.The observations on the fatigue crack initiation and propagation of 16Mn steel welded structure[J].Journal of Nanjing University of Science and Technology,2002,26(1):61-64.
[4]Domazet .Comparison of fatigue crack retardation methods[J].Engineering Failure Analysis,1996,3(2):137-147.
[5]郭阿明,王力忠,田秋月.疲劳裂纹钻孔止裂技术研究[J].四川建筑科学研究,2008,34(4):107-109.
Guo Aming,Wang Lizhong,Tian Qiuyue.Study on fatigue repair with stop hole techniques[J].Sichuan Building Science,2008,34(4):107-109.
[6]熊祖钊,易流.基于扩展有限元的钢结构钻孔止裂研究[J].橡塑技术与装备,2016,42(8):80-82.
Xiong Zuzhao,Yi Liu.Research of steel structure crack arrest drilling based on extended finite element[J].China Rubber/Plastics Technology and Equipment(Plastics),2016,42(8):80-82.
[7]何云树,陈立军,杜洪增.止裂孔尺寸对止裂效果影响的研究[J].中国民航学院学报,2004,22(3):29-31.
He Yunshu,Chen Lijun,Du Hongzeng.Effectiveness varying in dimension of crack-stopping holes[J].Journal of Civil Aviation University of China,2004,22(3):29-31.
[8]吉伯海,袁周致远,刘天笳,等.钢箱梁疲劳裂纹钻孔止裂修复的影响因素[J].江苏大学学报(自然科学版),2016,37(1):97-102.
Ji Bohai,Yuanzhou Zhiyuan,Liu Tianjia,et al.Influencing factors of stop-hole method for fatigue crack of steel box girder[J].Journal of Jiangsu University(Natural Science Edition),2016,37(1):97-102.
[9]Fanni M,Fouda N,Shabara M A N,et al.New crack stop hole shape using structural optimizing technique[J].Ain Shams Engineering Journal,2015,6(3):987-999.
[10]De Castro J T P,Meggiolaro M A,de Oliveira Miranda A C,et al.Prediction of fatigue crack initiation lives at elongated notch roots using short crack concepts[J].International Journal of Fatigue,2012,42:172-182.
[11]Toshiyuki Ishikawa,Risa Matsumoto,Atsushi Hattori,et al.Reduction of stress concentration at edge of stop hole by closing crack surface[J].Journal of the Society of Materials Science,2013,62(1):33-38.
[12]朱若燕,周金枝,易刚祥.提高焊接构件疲劳寿命的方法——止裂孔机理探讨[J].湖北工学院学报,1995,10(S1):133-136.
Zhu Ruoyan,Zhou Jinzhi,Yi Gangxiang.The way of increasing the fatigue life of welding components—On the mechanism of crack-cutting holes[J].Journal of Hubei Polytechnic University,1995,10(S1):133-136.
[13]王福建,吴国雄,赛德 M 伊萨.缓和曲线对交通安全的影响分析[J].重庆交通大学学报(自然科学版),2008,27(5):758-762.
Wang Fujian,Wu Guoxiong,Said M Easa.Analysis of effect on spiral transition curve on traffic safety[J].Journal of Chongqing Jiaotong University(Natural Science),2008,27(5):758-762.

相似文献/References:

[1]李金泉,杨化仁,罗来科.16Mn钢焊接件疲劳裂纹萌生与扩展观察[J].南京理工大学学报(自然科学版),2002,(01):61.
 LiJinquan YangHuaren LuoLaike.The Observations on the Fatigue Crack Initiation and Propagation of 16Mn Steel Welded Structure[J].Journal of Nanjing University of Science and Technology,2002,(05):61.
[2]徐志洪,李寿奖.大跨度钢结构屋盖吊装施工工艺的力学分析与评价[J].南京理工大学学报(自然科学版),2001,(03):323.
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[3]林少芬,李瑰贤,王春林.基于JC方法计算构件疲劳断裂的可靠性[J].南京理工大学学报(自然科学版),2000,(03):281.
 LinShaofen LiGuixian WangChunlin.Fatigue Fracture Reliability Calculation of Components Based on JC Method[J].Journal of Nanjing University of Science and Technology,2000,(05):281.

备注/Memo

备注/Memo:
收稿日期:2016-07-01 修回日期:2017-03-01

基金项目:国家自然科学基金(51478163); 江苏省交通科学研究计划项目(2013Y10-1)
作者简介:袁周致远(1990-),男,博士生,主要研究方向:钢桥疲劳与维护,E-mail:supery.z@hotmail.com; 通讯作者:吉伯海(1966-),男,博士,教授,主要研究方向:钢桥疲劳与维护,E-mail:hhbhji@163.com。
引文格式:袁周致远,吉伯海,傅中秋.钢结构疲劳裂纹合理止裂孔形状研究[J].南京理工大学学报,2017,41(5):556-561.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2017-09-30