Research on Bending Performance of Connection Joints of Concrete-Filled Double-Skin Steel Tube Members with Through Flange Stiffeners

YAN Fengjie; DU Baoshuai; LI Bofan; ZHENG Jie; WANG Xiantie; LIANG Wanggeng

doi:10.3724/j.gyjzG23072403

Volume 54 Issue 7

Jul. 2024

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YAN Fengjie, DU Baoshuai, LI Bofan, ZHENG Jie, WANG Xiantie, LIANG Wanggeng. Research on Bending Performance of Connection Joints of Concrete-Filled Double-Skin Steel Tube Members with Through Flange Stiffeners[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 23-38. doi: 10.3724/j.gyjzG23072403

Citation:

YAN Fengjie, DU Baoshuai, LI Bofan, ZHENG Jie, WANG Xiantie, LIANG Wanggeng. Research on Bending Performance of Connection Joints of Concrete-Filled Double-Skin Steel Tube Members with Through Flange Stiffeners[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 23-38. doi: 10.3724/j.gyjzG23072403

Citation:

YAN Fengjie, DU Baoshuai, LI Bofan, ZHENG Jie, WANG Xiantie, LIANG Wanggeng. Research on Bending Performance of Connection Joints of Concrete-Filled Double-Skin Steel Tube Members with Through Flange Stiffeners[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 23-38. doi: 10.3724/j.gyjzG23072403

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Research on Bending Performance of Connection Joints of Concrete-Filled Double-Skin Steel Tube Members with Through Flange Stiffeners

doi: 10.3724/j.gyjzG23072403

1. State Grid Shandong Electric Power Research Institute, Jinan 250061, China;
2. School of Civil Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China

Received Date: 2023-07-24
Available Online: 2024-08-16

Abstract

Abstract

A connection joint of concrete-filled double-skin steel tube (CFDST) with through flange stiffeners has been proposed, which effectively reduces construction risks while ensuring the strength and stiffness of the joints. Full-scale specimens were subjected to pure bending tests to investigate their failure modes, bending capacity, and neutral axis position. The finite element software ABAQUS was employed for numerical simulation analysis of the specimens. Combining experimental and numerical simulation results, the stress development process in joints of CFDST with through flange and the load on the bolts were analyzed. The influence of flange thickness, the number of through-stiffeners, stiffener height, and bolt specifications on the bending performance of the joint was analyzed, and recommended ranges for each parameter were suggested. Finally, considering the bending mechanical characteristics of joints of CFDST with through flange stiffeners, a design method for joints was proposed.
- concrete-filled double-skin steel tube,
- flange joint,
- through flange stiffeners,
- bending performance,
- design method

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References(19)

References

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