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Volume 15
Issue 17
10.3390/buildings15173219
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Study on Punching Shear Performance of Concrete-Filled Steel Tubular Column-Slab Column Joints in Metro Stations

by
Wufeng Mao
1,
Yanmei Ruan
1,
Yuhui Li
1,
Rui Liang
2,
Chenyang Xiao
2,
Yuan Mei
3 and
Hongping Lu
3,*
1
Guangzhou Metro Design and Research Institute Co., Ltd., Guangzhou 510010, China
2
China Railway Seventh Bureau Group Co., Ltd., Zhengzhou 450016, China
3
School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
*
Author to whom correspondence should be addressed.
Buildings 2025, 15(17), 3219; https://doi.org/10.3390/buildings15173219 (registering DOI)
Submission received: 4 August 2025 / Revised: 26 August 2025 / Accepted: 4 September 2025 / Published: 6 September 2025
(This article belongs to the Special Issue Advancing Civil Engineering Construction and Management: Innovations in Green Building, Intelligent Construction, and Sustainable Infrastructure Development)
Versions Notes

Abstract

To investigate the strain patterns and shear failure mechanisms of concrete-filled steel tube (CFT) column-end-plate joints during construction, this study designed and fabricated a scaled model of a standard subway station section based on similarity theory. Model tests were conducted under static earth pressure loads, and a finite element model was constructed for comparative analysis. The study focused on the ultimate bearing capacity, failure modes, and force transmission mechanisms of the joint, and optimized the analysis using reinforcement parameters. The results showed significant stress concentrations at the joint corners and core, with shear forces gradually forming annular cracks in the top slab concrete. The bearing system formed by the steel tube column and flange was the primary force transmission mechanism, and even after damage, the steel tube could still effectively restrain the core concrete. Increasing the steel bar diameter and increasing the number of slab reinforcements parallel to the beam significantly improved the joint’s mechanical properties. Improving the material properties of the reinforcement increased the joint’s stress and displacement capacity. This research provides a reference for optimizing the design and construction of slab-column joints in subway stations.
Keywords: steel-tube concrete columns; slab-column nodes; punch-cut damage; stress-strain steel-tube concrete columns; slab-column nodes; punch-cut damage; stress-strain

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MDPI and ACS Style

Mao, W.; Ruan, Y.; Li, Y.; Liang, R.; Xiao, C.; Mei, Y.; Lu, H. Study on Punching Shear Performance of Concrete-Filled Steel Tubular Column-Slab Column Joints in Metro Stations. Buildings 2025, 15, 3219. https://doi.org/10.3390/buildings15173219

AMA Style

Mao W, Ruan Y, Li Y, Liang R, Xiao C, Mei Y, Lu H. Study on Punching Shear Performance of Concrete-Filled Steel Tubular Column-Slab Column Joints in Metro Stations. Buildings. 2025; 15(17):3219. https://doi.org/10.3390/buildings15173219

Chicago/Turabian Style

Mao, Wufeng, Yanmei Ruan, Yuhui Li, Rui Liang, Chenyang Xiao, Yuan Mei, and Hongping Lu. 2025. "Study on Punching Shear Performance of Concrete-Filled Steel Tubular Column-Slab Column Joints in Metro Stations" Buildings 15, no. 17: 3219. https://doi.org/10.3390/buildings15173219

APA Style

Mao, W., Ruan, Y., Li, Y., Liang, R., Xiao, C., Mei, Y., & Lu, H. (2025). Study on Punching Shear Performance of Concrete-Filled Steel Tubular Column-Slab Column Joints in Metro Stations. Buildings, 15(17), 3219. https://doi.org/10.3390/buildings15173219

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