Welding in the World

, Volume 50, Issue 5–6, pp 59–67 | Cite as

Full-Scale Testing of Beam-to-RHS Column Connections with Partial Joint Penetration Groove Welded Joints and Assessment of Safety from Brittle Fracture

  • K. Azuma
  • Y. Kurobane
  • T. Iwashita
  • K. Dale
Technical Papers


This paper concerns the applicability of partial joint preparation (PJP) groove welds to beam-to-column connections. Two full-sized beam-to-column connections, with rectangular hollow section columns and PJP groove welds at the ends of the beam flanges, were tested under cyclic loads. All the specimens were made with one-sided connections. When the unfused regions created by PJP groove welds were reinforced by fillet welds so that the welded joints have a sufficient cross-sectional area, the connections showed sufficient deformation capacity, although ductile cracks initiated at the weld toes and grew stably. Test results were well reproduced by non-linear FE analyses. Strains sustained at points around internal discontinuities were found to be low because of greater cross-sectional areas of welded joints compared with the cross-sectional area of the beam flanges. Fracture toughness properties of numerically modelled connections were evaluated by using a failure assessment diagram approach, which was modified by considering the effect of enhanced apparent toughness of material due to the loss of crack tip constraint. Both the test results and the fracture mechanics-based assessment demonstrated that it is unlikely to initiate brittle fracture at these discontinuities when materials used in the connections have sufficient fracture toughness.

IIW-Thesaurus keywords

Penetration Evaluation Girders Structural members Safety factors Brittle fracture Fractures Fracture toughness Mechanical properties Toughness Failure Strain Measurement Buckling Deformation Distortion Strain gauges Measuring instruments Weld metal Weld toes Heat affected zone Weld zone 


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  1. [1]
    AIJ Kinki, Full-scale test on plastic rotation capacity of steel wide-flange beams connected with square tube steel columns, Committee on Steel Building Structures, Kinki Branch of Architectural Institute of Japan, Osaka, Japan, 1997 (in Japanese).Google Scholar
  2. [2]
    AIJ, Technical recommendations for steel construction for buildings, Part 1 guide to steel-rib fabrications, Architectural Institute of Japan, Tokyo, Japan, 1996 (in Japanese).Google Scholar
  3. [3]
    Azuma K., Kurobane Y., Makino Y.: Cyclic testing of beam-to-column connections with weld defects and assessment of safety of numerically modeled connections from brittle fracture, Engineering Structures, 2000, Vol. 22, No. 12, Elsevier Science Ltd., pp. 1596–1608.CrossRefGoogle Scholar
  4. [4]
    Azuma K., Kurobane Y., Makino Y.: Full-scale testing of beam-to-column connections with partial joint penetration groove welded joints, Proceedings of the 10th International Symposium on Tubular Structures, 2003, pp. 419–427.Google Scholar
  5. [5]
    BS 7910: Guidance on methods for assessing the acceptability of flaws in metallic structures, 1997.Google Scholar
  6. [6]
    ABAQUS 2004, ABAQUS v6.4 Manuals (User’s Manuals I, II and III), Hibbitt, Karlsson and Sorensen, Inc.Google Scholar
  7. [7]
    Iwashita T., Kurobane Y., Azuma K., Makino Y.: Prediction of brittle fracture initiating at ends of CJP groove welded joints with defects: study into applicability of failure assessment diagram approach, Engineering Structures, 2003, Vol. 25, Issue 14, Elsevier Science Ltd., pp. 1815–1826.CrossRefGoogle Scholar
  8. [8]
    Anderson T.L., Dodds R.H., Jr.: Specimen size requirements for fracture toughness testing in the ductile-brittle transition region, Journal of Testing and Evaluation, 1991, Vol. 19(2), pp. 123–134.CrossRefGoogle Scholar

Copyright information

© International Institute of Welding 2006

Authors and Affiliations

  • K. Azuma
    • 1
  • Y. Kurobane
    • 2
  • T. Iwashita
    • 3
  • K. Dale
    • 4
  1. 1.Sojo UniversityJapan
  2. 2.Kumamoto UniversityJapan
  3. 3.Ariake National College of TechnologyJapan
  4. 4.Formerly Sojo UniversityJapan

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