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Experimental study on mechanical performance of frame connected by improved end-plate joint.

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Title: Experimental study on mechanical performance of frame connected by improved end-plate joint.
Authors: Guo, Xiaonong1 (AUTHOR), Duan, Xiong1 (AUTHOR), Luo, Jinhui1 (AUTHOR) ljh@tongji.edu.cn, Fang, Yu2 (AUTHOR)
Source: Advances in Structural Engineering. May2026, Vol. 29 Issue 7, p1364-1380. 17p.
Subjects: Beam-column joints, Bracing (Structural engineering), Finite element method, Mechanical behavior of materials, Steel framing, Stiffness (Mechanics), Mechanical movements
Abstract: An improved end-plate joint has been applied to connect H-beams and H-columns in the weak-axis direction. However, there is still a lack of research on the impact of this joint on the strong-axis mechanical behavior of frames. To address this gap, monotonic loading tests were conducted on two steel frames: one braced and the other unbraced, both connected with improved end-plate joints. The mechanical performance of the frames in the strong-axis direction was analyzed based on test phenomena, load-displacement curves, and deformations of the frame and joint core area. Finite element models were established for braced and unbraced frames to investigate the effects of parameters such as cross-brace presence, brace connecting plate presence, stiffener rib configuration, and beam-column joint type on the strong-axis mechanical performance of the frames. A simplified calculation model and stiffness equation for the frames are proposed. The results show that, compared to steel frames with traditional end-plate joints, the initial stiffness, yield load, and ultimate bearing capacity of those with improved end-plate joints are moderately increased. When compared to welded frames, the yield load and ultimate bearing capacity are comparable, while the initial stiffness decreases by 13%. Installing braces significantly enhances the stiffness and bearing capacity of the frame, shifting the failure mode from end-plate bending failure to net section failure of the tension brace. [ABSTRACT FROM AUTHOR]
Copyright of Advances in Structural Engineering is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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PubTypeId: academicJournal
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  Data: Experimental study on mechanical performance of frame connected by improved end-plate joint.
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  Data: <searchLink fieldCode="AR" term="%22Guo%2C+Xiaonong%22">Guo, Xiaonong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Duan%2C+Xiong%22">Duan, Xiong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Jinhui%22">Luo, Jinhui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ljh@tongji.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Fang%2C+Yu%22">Fang, Yu</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Advances+in+Structural+Engineering%22">Advances in Structural Engineering</searchLink>. May2026, Vol. 29 Issue 7, p1364-1380. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Beam-column+joints%22">Beam-column joints</searchLink><br /><searchLink fieldCode="DE" term="%22Bracing+%28Structural+engineering%29%22">Bracing (Structural engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Steel+framing%22">Steel framing</searchLink><br /><searchLink fieldCode="DE" term="%22Stiffness+%28Mechanics%29%22">Stiffness (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+movements%22">Mechanical movements</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: An improved end-plate joint has been applied to connect H-beams and H-columns in the weak-axis direction. However, there is still a lack of research on the impact of this joint on the strong-axis mechanical behavior of frames. To address this gap, monotonic loading tests were conducted on two steel frames: one braced and the other unbraced, both connected with improved end-plate joints. The mechanical performance of the frames in the strong-axis direction was analyzed based on test phenomena, load-displacement curves, and deformations of the frame and joint core area. Finite element models were established for braced and unbraced frames to investigate the effects of parameters such as cross-brace presence, brace connecting plate presence, stiffener rib configuration, and beam-column joint type on the strong-axis mechanical performance of the frames. A simplified calculation model and stiffness equation for the frames are proposed. The results show that, compared to steel frames with traditional end-plate joints, the initial stiffness, yield load, and ultimate bearing capacity of those with improved end-plate joints are moderately increased. When compared to welded frames, the yield load and ultimate bearing capacity are comparable, while the initial stiffness decreases by 13%. Installing braces significantly enhances the stiffness and bearing capacity of the frame, shifting the failure mode from end-plate bending failure to net section failure of the tension brace. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Advances in Structural Engineering is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1177/13694332251375201
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 17
        StartPage: 1364
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      – SubjectFull: Beam-column joints
        Type: general
      – SubjectFull: Bracing (Structural engineering)
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Steel framing
        Type: general
      – SubjectFull: Stiffness (Mechanics)
        Type: general
      – SubjectFull: Mechanical movements
        Type: general
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      – TitleFull: Experimental study on mechanical performance of frame connected by improved end-plate joint.
        Type: main
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            NameFull: Guo, Xiaonong
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            NameFull: Duan, Xiong
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            NameFull: Luo, Jinhui
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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            – TitleFull: Advances in Structural Engineering
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