2025年4月28日 周一
期刊社主页编辑部首页编委会期刊简介过刊浏览
首页 > 过刊浏览>2018年第40卷第3期 >23-30. DOI:10.11835/j.issn.1674-4764.2018.03.004
PDF HTML阅读 XML下载 导出引用 引用提醒
铸钢节点对接焊缝有效缺口应力分析
CSTR:
[cstr]
作者:
中图分类号:

TU391

基金项目:

国家自然科学基金（51525803、51708384）


Effective notch stress analysis of butt weld on cast steel joint
Author:
  • 摘要
    • | |
  • 访问统计
    • |
  • 参考文献 [22]
    • |
  • 相似文献 [20]
    • | | |
  • 文章评论
    摘要:

    为了研究铸钢节点对接焊缝的疲劳性能和寿命评估方法，对一种常用的铸钢热轧钢对接焊缝试件进行了疲劳试验研究，得到了刚度、位移与疲劳寿命阶段之间的关系。根据疲劳试验现象和断面的电镜扫描结果，提出了该类试件的疲劳失效机理。此外，采用有效缺口应力法预测了铸钢节点对接焊缝的疲劳寿命，并在考虑了平均应力和焊接残余应力的前提下，提出了改进的有效缺口应力法，分别将预测结果与实测疲劳寿命进行了对比。研究结果表明：铸钢节点对接焊缝的疲劳过程可分为稳定阶段和断裂阶段。稳定阶段占总寿命比例≥80%，断裂阶段≤20%。有效缺口应力法能在一定程度预测疲劳寿命的变化趋势，但结果偏危险，改进的有效缺口应力法能提供较安全的预测结果。

    Abstract:

    In order to investigate the fatigue behavior and fatigue life prediction method of butt weld on cast steel joint, a series of fatigue tests were conducted on welded specimens of cast steel and hot rolled steel with a common welding type. Relationships between stiffness, displacement and fatigue life stage were obtained. Fatigue failure mechanism was revealed based on the phenomenon of fatigue process and fracture surface observation resulted by scanning electron microscope (SEM). In addition, fatigue life prediction was carried out with effective notch stress method (ENSM). In consideration of the influence of mean stress and residual stress, improved effective notch stress method (IENSM) was proposed, and the predicted values were compared with the test data. The result shows that:The fatigue process of butt weld on cast steel joint can be divided into two stages:stable stage and fracture stage. The stable stage possesses more than 80% fatigue life, while the fracture stage maintains less than 20%. ENSM can predict the changing trends of the fatigue life to some extent, but the results are non-conservative for engineering. However, IENSM can provide safe assessments.

    参考文献
    [1] 韩庆华,曾沁敏,金辉,等. 北京奥运会老山自行车馆屋盖节点数值分析[J]. 建筑结构学报,2006,27(6):101-107. HAN Q H, ZENG Q M, JIN H, et al. Numerical analysis of the special joints in the roof structure of Laoshan Cycling Gymnasium for Beijing Olympic Games[J]. Journal of Building Structures, 2006, 27(6):101-107(in Chinese)
    [2] NUSSBAUMER A,HERION S,VESELCIC M,et al. New S-N curves for details in bridges with steel truss tubular superstructure[C]//Proceeding of the 13th International Symposium Tubular Structure, Hong Kong, China, 2010:481-489.
    [3] VESELCIC M,HERION S,PUTHLI R. Selection of butt-welded connections for joints between tubulars and cast steel nodes under fatigue loading[C]//Tubular Structures-International Symposium, Québec, Canada, 2006:528-535.
    [4] JIN H,LI J,MO J H,et al. Fatigue of girth butt weld for cast steel node connection in tower structure under wave loadings[J]. The Structural Design of Tall and Special Buildings, 2014, 23:1119-1140.
    [5] 靳慧,李菁,李爱群,等. 波浪载荷下海中观光塔铸钢节点疲劳强度验算[J]. 西南交通大学学报,2010,45(5):692-697. JIN H, LI J, LI A Q, et al. Checking calculation of fatigue strength for cast steel joints of offshore tour tower under wave loads[J]. Journal of Southwest Jiaotong University, 2010, 45(5):692-697.(in Chinese)
    [6] HAN Q H,GUO Q,YIN Y,et al. Fatigue behaviour of G20Mn5QT cast steel and butt welds with Q345B steel[J]. International Journal of Steel Structures, 2016, 16(1):139-149.
    [7] HAN Q H, GUO Q, YIN Y, et al. Effects of strain ratio on fatigue behavior of G20Mn5QT cast steel[J]. Transactions of Tianjin University, 2016, 22:302-307.
    [8] 邹会. 铸钢节点环形对接焊缝的疲劳性能试验研究[D]. 南京:东南大学, 2014. ZOU H. Experimental study on fatigue performance of circular butt-weld on cast steel nodes[D]. Nanjing:Southeast University, 2014. (in Chinese)
    [9] 董亮,童乐为,彭洋. 带垫板的铸钢-轧钢对焊接头疲劳性能试验研究[J]. 结构工程师,2011,27(3):80-85. DONG L, TONG L W, PENG Y. Experimental investigation of fatigue behavior of butt-welded joints between cast steel and rolled steel plates with backing strip[J]. Structural Engineers, 2011, 27(3):80-85. (in Chinese)
    [10] 陈海洲,张其林,靳慧,等. 杭州湾观光塔铸钢节点疲劳性能试验研究[J]. 建筑结构学报,2009,30(5):149-154. CHEN H Z.,ZHANG Q L,JIN H,et al. Experimental study on fatigue properties of cast-steel joints of Hangzhou Bay sightseeing tower[J]. Journal of Building Structures, 2009, 30(5):149-154. (in Chinese)
    [11] MARULO G,BAUMGARTNER J,FRENDO F. Fatigue strength assessment of laser welded thin-walled joints made of mild and high strength steel[J]. International Journal of Fatigue, 2017, 96:142-151.
    [12] WANG L B, JIN H, DONG H W, et al. Balance fatigue design of cast steel nodes in tubular steel structures[J]. The Scientific World Journal, 2013:421410.
    [13] 韩庆华,陈志钢,芦燕. 铸钢节点环形对接焊缝热点应力分析[J].建筑结构学报,2011,32(12):250-256. HAN Q H,CHEN Z G,LU Y. Hot spot stress analysis of girth butt weld in cast steel joint[J]. Journal of Building Structures, 2011, 32(12):250-256. (in Chinese)
    [14] 郭琪,韩庆华,李振宇,等. 铸钢节点对接焊缝弯矩作用下的热点应力分析[J]. 天津大学学报(自然科学与工程技术版),2014,47(Sup1):37-43. GUO Q, HAN Q H, LI Z Y, et al. Hot spot stress analysis in butt weld of cast steel joint under bending moment[J]. Journal of Tianjin University(Science and Technology), 2014, 47(Sup1):37-43. (in Chinese)
    [15] HAN Q H, GUO Q, YIN Y, et al. Fatigue performance of butt welds between cast steel joint and steel tubular members[J]. Fatigue & Fracture of Engineering Materials & Structures, 2017, 40:642-651.
    [16] Det Norske Veritas. Fatigue design of offshore steel structures[EB/OL]. http://www.dnv.com,2011-10.
    [17] HOBBACHER A. Recommendations for fatigue design of welded joints and components[M]. Welding Research Council, 2009.
    [18] PEDERSEN M M, MOURITSEN O Ø, HANSEN M R, et al. Re-analysis of fatigue data for welded joints using the notch stress approach[J]. International Journal of Fatigue, 2010, 32:1620-1626.
    [19] 刘旭,张开林,姚远,等. 基于缺口应力法的焊接接头疲劳分析[J]. 工程力学,2016,33(6):209-214. LIU X, ZHANG K L, YAO Y, et al. Fatigue analysis of welded joints based on notch stress method[J]. Engineering Mechanics, 2016, 33(6):209-214. (in Chinese)
    [20] 郑修麟. 材料疲劳理论与工程应用[M]. 北京:科学出版社,2013:88-120. ZHENG X L.Fatigue theory and engineering application of material[M]. Beijing:Science Press, 2013:88-120. (in Chinese)
    [21] 黄一哲.钢结构焊接残余应力数值模拟及实验测定[D]. 天津:天津大学,2014. HUANG Y Z. Numerical analysis and experimental measurement of residual stress on steel structures[D]. Tianjin:Tianjin University, 2014. (in Chinese)
    [22] 陈哿,郭琪,芦燕. 铸钢节点环形对接焊缝残余应力分析[J]. 建筑钢结构进展,2016,18(6):25-33. CHEN G,GUO Q,LU Y. Residual stresses analysis of girth butt weld in cast steel joint[J]. Process in Steel Building Structures, 2016, 18(6):25-33.(in Chinese)
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

郭琪,黄欣,韩庆华,邢颖,黄健.铸钢节点对接焊缝有效缺口应力分析[J].土木与环境工程学报（中英文）,2018,40(3):23-30. Guo Qi, Huang Xin, Han Qinghua, Xing Ying, Huang Jian. Effective notch stress analysis of butt weld on cast steel joint[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2018,40(3):23-30.10.11835/j. issn.1674-4764.2018.03.004

复制
分享
文章指标
  • 点击次数:1026
  • 下载次数: 1279
  • HTML阅读次数: 480
  • 引用次数: 0
历史
  • 收稿日期:2017-07-07
  • 在线发布日期: 2018-04-26
文章二维码

您是本站第 10304099 访问者

通信地址：重庆市沙坪坝区沙正街174号，重庆大学A区     邮编：400044

电话：023-65111322；023-65111863     E-mail：xuebao@cqu.edu.cn

版权所有：土木与环境工程学报（中英文） ® 2025 版权所有