Steel and Composite Structures

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Seismic performance of a novel bolt-and-welded connection of box-section beam and box-section column

  • Linfeng Lu (School of civil engineering, Chang'an University) ;
  • Songlin Ding (School of civil engineering, Chang'an University) ;
  • Yuzhou Liu (School of civil engineering, Chang'an University) ;
  • Zhaojia Chen (School of civil engineering, Chang'an University) ;
  • Zhongpeng Li (China Construction Third Bureau Group Co., Ltd.)
  • Received : 2019.03.23
  • Accepted : 2023.04.21
  • Published : 2023.04.21
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Abstract

The H-shaped steel beam is popular due to its ease of manufacturing and connection to the column. This profile, which is used as a shallow beam, needs the high weak-axis bending stiffness and torsional stiffness to meet the overall stability. Achieving the local beam flange stability, bearing capacity, bending stiffness, and torsional requirements need a great thickness and width of the beam flange, which causes, which will cause more uneconomical structural design. So, the box-section beam is the ideal alternative. However, the current design specifications do not have design rules for the bolt-and-welded connection of the box-section beam and box-section column. The paper proposes a novel bolt-and-welded connection of the box-section beams and box-section columns based on a high-rise structural design scheme. Three connection models, BASE, WBF, and RBS, are analyzed under cyclic loading in ABAQUS software. The failure modes, hysteresis response, bearing capacity, ductility, plastic rotation angle, energy dissipation, and stiffness degradation of all models are determined and compared. Compared with the other two models, the model WBF exhibited excellent seismic performance, ductility, and plastic rotation ability. Finally, model WBF was chosen as the connection scheme used in the project design.

Keywords

Acknowledgement

The authors thank the Nature Science Foundation of Shaanxi Province (2018JM5063) and the Fundamental Research Funds for the Central Universities Cultivation of Chang'an University (300102288201) for financial support. However, any opinions, findings, conclusions, and recommendations expressed in this paper are those of the writers and do not necessarily reflect the sponsors' views.

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