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Volume 15
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10.3390/buildings15173129
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Experimental and Numerical Investigations on Shear Performance of Large-Scale Stirrup-Free I-Shaped UHPC Beams

by
Shengze Wu
1,
Chengan Zhou
1,
Fan Mo
1,
Lifeng Zhang
1,
Haibo Jiang
1,*,
Yueqiang Tian
2 and
Junfa Fang
2
1
School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
2
Zhonglu Dura International Engineering Co., Ltd., Guangzhou 510430, China
*
Author to whom correspondence should be addressed.
Buildings 2025, 15(17), 3129; https://doi.org/10.3390/buildings15173129
Submission received: 4 August 2025 / Revised: 22 August 2025 / Accepted: 27 August 2025 / Published: 1 September 2025
(This article belongs to the Section Building Structures)
Versions Notes

Abstract

Ultra-High-Performance Concrete (UHPC) is a game-changing, innovative material with the merits of exceptional tensile strength, making it suitable for stirrup-free UHPC beams. In this study, two 4.0 m-long large-scale stirrup-free I-shaped UHPC beams were experimentally explored in bending tests and shear tests. Cracking patterns, failure modes, and ultimate load-bearing capacity were obtained. Experimental findings revealed that the shear capacity of the stirrup-free I-shaped UHPC beams with a web thickness of merely 50.0 mm reached more than 20.0 MPa and demonstrated excellent post-cracking shear behavior. Finite element models were established and verified with experimental results to investigate the shear behaviors of stirrup-free I-shaped UHPC beams, considering the parameters of shear span-depth ratio and longitudinal reinforcement strength. The results demonstrated that as the shear span-depth ratio increases, the shear capacity of UHPC beams exhibits a declining trend, accompanied by increased mid-span deflection and a degradation in stiffness. French code and PCI report were suggested for design purposes, due to rationally conservative prediction and explicit physical indication.
Keywords: shear performance; UHPC beams; stirrup-free; I-shaped; numerical simulation shear performance; UHPC beams; stirrup-free; I-shaped; numerical simulation

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MDPI and ACS Style

Wu, S.; Zhou, C.; Mo, F.; Zhang, L.; Jiang, H.; Tian, Y.; Fang, J. Experimental and Numerical Investigations on Shear Performance of Large-Scale Stirrup-Free I-Shaped UHPC Beams. Buildings 2025, 15, 3129. https://doi.org/10.3390/buildings15173129

AMA Style

Wu S, Zhou C, Mo F, Zhang L, Jiang H, Tian Y, Fang J. Experimental and Numerical Investigations on Shear Performance of Large-Scale Stirrup-Free I-Shaped UHPC Beams. Buildings. 2025; 15(17):3129. https://doi.org/10.3390/buildings15173129

Chicago/Turabian Style

Wu, Shengze, Chengan Zhou, Fan Mo, Lifeng Zhang, Haibo Jiang, Yueqiang Tian, and Junfa Fang. 2025. "Experimental and Numerical Investigations on Shear Performance of Large-Scale Stirrup-Free I-Shaped UHPC Beams" Buildings 15, no. 17: 3129. https://doi.org/10.3390/buildings15173129

APA Style

Wu, S., Zhou, C., Mo, F., Zhang, L., Jiang, H., Tian, Y., & Fang, J. (2025). Experimental and Numerical Investigations on Shear Performance of Large-Scale Stirrup-Free I-Shaped UHPC Beams. Buildings, 15(17), 3129. https://doi.org/10.3390/buildings15173129

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