Study on Bearing Capacity Evaluation and Reinforcement Technology Under Limited Operation of Defective H-Shaped Steel Bolted Welded Joints

WU Chenxuan; XING Kuntao; LI Shenglin; FENG Shaopan

doi:10.13204/j.gyjzG22050206

Volume 52 Issue 10

Oct. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(10): 176-181,194

WU Chenxuan, XING Kuntao, LI Shenglin, FENG Shaopan. Study on Bearing Capacity Evaluation and Reinforcement Technology Under Limited Operation of Defective H-Shaped Steel Bolted Welded Joints[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(10): 176-181,194. doi: 10.13204/j.gyjzG22050206

Citation:

WU Chenxuan, XING Kuntao, LI Shenglin, FENG Shaopan. Study on Bearing Capacity Evaluation and Reinforcement Technology Under Limited Operation of Defective H-Shaped Steel Bolted Welded Joints[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(10): 176-181,194. doi: 10.13204/j.gyjzG22050206

Citation:

WU Chenxuan, XING Kuntao, LI Shenglin, FENG Shaopan. Study on Bearing Capacity Evaluation and Reinforcement Technology Under Limited Operation of Defective H-Shaped Steel Bolted Welded Joints[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(10): 176-181,194. doi: 10.13204/j.gyjzG22050206

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Study on Bearing Capacity Evaluation and Reinforcement Technology Under Limited Operation of Defective H-Shaped Steel Bolted Welded Joints

doi: 10.13204/j.gyjzG22050206

1. China University of Mining and Technology, Beijing 100083, China;
2. Inspection and Certification Co., Ltd., MCC, Beijing 100088, China

Received Date: 2022-05-02
Available Online: 2023-03-22

Abstract

Abstract

H-shaped steel bolted welded joints have excellent welding performance and are widely used in steel buildings. However, during the construction, the joints often show welding defects such as misalignment, air holes, and slag inclusion, which do not meet the requirements of acceptance specifications and seriously affect structural safety. In order to ensure the safe use of structures, it is necessary to study the method for accurately evaluating the bearing capacity and the reinforcement technology in a confined space of the defective H-shaped steel bolted welded joints. In this paper, defective welds were quantitatively classified into different levels, and a method for accurately evaluating the residual bearing capacity of joints by using the effective part of the defective welds, bolt friction, and compressive capacity of the defective welds was proposed. In addition, joints of five commonly used beams with different defective welds were evaluated, and the evaluation results of the bearing capacity of each joint were given. According to the evaluation results, a bending reinforcement method of H-shaped bolted welded joints was proposed, which changed H-shaped structures into III-shaped sections in a confined space. The research results can provide a reference for the identification and reinforcement of defective H-shaped steel bolted welded, as well as the revision of reinforcement codes of steel structure joints in China.
- H-shaped steel bolt welded joint,
- defective welds,
- evaluation of residual bearing capacity,
- joint reinforcement

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References(11)

References

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