Experimental Research on the Axial Compression Performance of UHPC-Encased CFST Composite Columns with High-Strength Stirrups

HU Shuangping

doi:10.3724/j.gyjzG25012103

Volume 55 Issue 6

Jun. 2025

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HU Shuangping. Experimental Research on the Axial Compression Performance of UHPC-Encased CFST Composite Columns with High-Strength Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(6): 113-122. doi: 10.3724/j.gyjzG25012103

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HU Shuangping. Experimental Research on the Axial Compression Performance of UHPC-Encased CFST Composite Columns with High-Strength Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(6): 113-122. doi: 10.3724/j.gyjzG25012103

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Experimental Research on the Axial Compression Performance of UHPC-Encased CFST Composite Columns with High-Strength Stirrups

doi: 10.3724/j.gyjzG25012103

HU Shuangping^1,2

1. Shaanxi Railway and Underground Traffic Engineering Key Laboratory, Xi'an 710043, China;
2. China Railway First Survey and Design Institute Group Co. Ltd., Xi'an 710043, China

Received Date: 2025-01-21

Abstract

Abstract

In order to study the axial compression performance of UHPC-encased concrete-filled steel tubular（CFST） composite columns with high-strength stirrups， six specimens of the UHPC-encased CFST composite columns and one unreinforced CFST column were designed， fabricated， and tested under axial compression. The effects of different transverse restraint modes and their spacing on axial compression performance were analyzed. The results showed that all UHPC concrete-filled steel tubular composite column specimens subjected to loading exhibited strength failure upon reaching their ultimate bearing capacity state， while maintaining good integrity at failure. Compared with CFST columns， UHPC-encased CFST composite columns with high-strength stirrups exhibited a significant improvement in compressive bearing capacity and stiffness. In terms of ductility， they also demonstrated superior performance.
- composite column,
- UHPC,
- concrete-filled steel tubular column,
- axial compressive performance

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References(23)

References

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