Research on the Direct Design Method for Semi-Rigid Connected Steel Frame-Braced Structures

He Tiansen; Wu Ziwei; Xu Haifeng; Li Guoqiang; Jiang Jian; Jiang Yunhan; Chen Chen; Xiao Lei; Zhang Jingxiao

doi:10.13206/j.gjgS24051501

Volume 40 Issue 9

Sep. 2025

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Article Navigation > STEEL CONSTRUCTION(Chinese & English) > 2025 > 40(9): 36-44

He Tiansen, Wu Ziwei, Xu Haifeng, Li Guoqiang, Jiang Jian, Jiang Yunhan, Chen Chen, Xiao Lei, Zhang Jingxiao. Research on the Direct Design Method for Semi-Rigid Connected Steel Frame-Braced Structures[J]. STEEL CONSTRUCTION(Chinese & English), 2025, 40(9): 36-44. doi: 10.13206/j.gjgS24051501

Citation:

He Tiansen, Wu Ziwei, Xu Haifeng, Li Guoqiang, Jiang Jian, Jiang Yunhan, Chen Chen, Xiao Lei, Zhang Jingxiao. Research on the Direct Design Method for Semi-Rigid Connected Steel Frame-Braced Structures[J]. STEEL CONSTRUCTION(Chinese & English), 2025, 40(9): 36-44. doi: 10.13206/j.gjgS24051501

Citation:

He Tiansen, Wu Ziwei, Xu Haifeng, Li Guoqiang, Jiang Jian, Jiang Yunhan, Chen Chen, Xiao Lei, Zhang Jingxiao. Research on the Direct Design Method for Semi-Rigid Connected Steel Frame-Braced Structures[J]. STEEL CONSTRUCTION(Chinese & English), 2025, 40(9): 36-44. doi: 10.13206/j.gjgS24051501

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Research on the Direct Design Method for Semi-Rigid Connected Steel Frame-Braced Structures

doi: 10.13206/j.gjgS24051501

1. College of Civil Engineering, Tongji University, Shanghai 200092, China;
2. Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China;
3. ABC Building Systems (China) Co., Ltd., Shanghai 201199, China;
4. Changjiang & Jinggong (Shanghai) Construction Technology Co., Ltd., Shanghai 201199, China

Received Date: 2024-05-15
Available Online: 2025-11-05
Publish Date: 2025-09-22

Abstract

Abstract

To further reduce carbon emissions in the construction industry， this paper proposes a semi-rigid connected steel frame-braced structural system and its direct design method to mitigate the use of construction materials. Positioned between fully-rigid and pinned connections， semi-rigid connections allow for certain levels of bending moment and rotation between beams and columns， thereby enhancing the overall structural load-carrying efficiency. The step-by-step procedure and modeling techniques of the direct design method were elaborated based on existing codes and design software. The effectiveness of the proposed design method and the superiority of the structural system were validated through numerical examples based on an actual factory building. The numerical results demonstrated that employing semi-rigidly connected steel frames could save over 20% of steel consumption compared to traditional rigidly connected steel frames while maintaining equivalent structural performance.
- semi-rigid connection,
- steel frame,
- structural design,
- material usage,
- carbon emission,
- nonlinear analysis

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References(12)

References

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