Experimental study on the weld fracture behavior of high strength steel beam-to-column connections

被引：0
|
作者：
Liu X.-Y. [1 ,2 ]
Wang Y.-Q. [2 ]
Shi Y.-J. [2 ]
Tan Q.-H. [1 ]
机构：
[1] College of Basic Education for Commanding Officers, National University of Defense Technology, Changsha
[2] Department of Civil Engineering, Tsinghua University, Beijing
来源：
Wang, Yuan-Qing (wang-yq@mail.tsinghua.edu.cn) | 2018年 / Tsinghua University卷 / 35期
关键词：
Connection; Experimental study; Fracture behavior; High strength steel; Welded joint;
D O I：
10.6052/j.issn.1000-4750.2016.11.0885
中图分类号：
学科分类号：
摘要：
To investigate the fracture behavior of high strength steel (HSS) welded joints in practical engineering, 20 typical HSS cruciform welded joints that represent the local weld regions of practical beam-to-column connections were tested under monotonic and cyclic loading. Two weld types, that is, the complete penetration butt welded joint and fillet welded joint, were adopted. The fracture mechanisms of HSS welded joints were investigated. The effects of weld type, load type and steel strength on the fracture behavior of HSS welded joints were analyzed. The results indicate that the weld type has a large effect on the fracture behavior of welded joints. The tension-unloading effects result in material damage and cracks in the heat affected zone. The HSS welded joints are more prone to fracture failure under cyclic loading of larger ranges. The fracture loads and elongations of the tested coupons were obtained, which can provide basis for developing fracture prediction model of welds in HSS connections. © 2018, Engineering Mechanics Press. All right reserved.
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页码：54 / 64
页数：10
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共 17 条
  • [1] Lin Y., Experimental study on mechanical properties and toughness of Q460C high strength steel and its butt weld, (2012)
  • [2] Glodez S., Knez M., Jezernik N., Et al., Fatigue and fracture behaviour of high strength steel S1100Q, Engineering Failure Analysis, 16, 7, pp. 2348-2356, (2009)
  • [3] Tong L., Huang X., Zhou F., Et al., Experimental and numerical investigations on extremely-low-cycle fatigue fracture behavior of steel welded joints, Journal of Constructional Steel Research, 119, 1, pp. 98-112, (2016)
  • [4] Kang L., Ge H., Kato T., Experimental and ductile fracture model study of single-groove welded joints under monotonic loading, Engineering Structures, 85, pp. 36-51, (2015)
  • [5] Zhou H., Wang Y., Shi Y., Xiong J., Fracture analyses of welded details in beam-to-column connections using micromechanics-based models, Engineering Mechanics, 32, 5, pp. 37-50, (2015)
  • [6] Hu F., Shi G., Shi Y., Fracture behavior of beam-column connections using high strength steel based on fracture mechanics, Engineering Mechanics, 32, 4, pp. 41-46, (2015)
  • [7] Nykanen T., Bjork T., Laitinen R., Fatigue strength prediction of ultra high strength steel butt-welded joints, Fatigue & Fracture of Engineering Materials & Structures, 36, 6, pp. 469-482, (2013)
  • [8] Shi G., Ban H., Shi Y., Wang Y., Overview of research progress for high strength steel structures, Engineering Mechanics, 30, 1, pp. 1-13, (2013)
  • [9] Wang Y., Lin Y., Zhou H., Study on the brittle fracture and fatigue of high strength steels with their welds, Progress in Steel Building Strucutures, 14, 5, pp. 21-28, (2012)
  • [10] Bjork T., Toivonen J., Nykanen T., Capacity of fillet welded joints made of ultra high-strength steel, Welding in the World, 56, 3-4, pp. 71-84, (2012)
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