Experimental Research on Mechanical Properties of Composite Cross-Shaped Concrete Filled Steel Tubular Column Under Axial Compression

XIE Li; FANG Xu; CHEN Mengcheng; YANG Chao; HUANG Hong

doi:10.13204/j.gyjz2018121501

Volume 53 Issue 2

Feb. 2023

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XIE Li, FANG Xu, CHEN Mengcheng, YANG Chao, HUANG Hong. Experimental Research on Mechanical Properties of Composite Cross-Shaped Concrete Filled Steel Tubular Column Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 133-137,196. doi: 10.13204/j.gyjz2018121501

Citation:

XIE Li, FANG Xu, CHEN Mengcheng, YANG Chao, HUANG Hong. Experimental Research on Mechanical Properties of Composite Cross-Shaped Concrete Filled Steel Tubular Column Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 133-137,196. doi: 10.13204/j.gyjz2018121501

Citation:

XIE Li, FANG Xu, CHEN Mengcheng, YANG Chao, HUANG Hong. Experimental Research on Mechanical Properties of Composite Cross-Shaped Concrete Filled Steel Tubular Column Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 133-137,196. doi: 10.13204/j.gyjz2018121501

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Experimental Research on Mechanical Properties of Composite Cross-Shaped Concrete Filled Steel Tubular Column Under Axial Compression

doi: 10.13204/j.gyjz2018121501

1. State Key Laboratory of Performance Monitoring Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang 330013, China;
2. College of Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China

Received Date: 2018-12-15
Available Online: 2023-05-25
Publish Date: 2023-02-20

Abstract

Abstract

Bosed on the design concept of reinforced concrete special-shaped column, a composite cross-shaped concrete filled steel tubular column formed by the welding of square steel tube and channel steel was put forward. Taking the length and cross-section form as the main parameters, 5 specimens were designed and fabricated. Through the axial compression test, the failure modes and load-strain curves of the specimens were investigated, and the effects of various parameters on the bearing capacity and ductility of the new section concrete filled steel tubular columns under axial compression were analyzed. The final faiure mode of composite cross-shaped concrete filled steel tube specimens was a number of small bulge distributed along the specimen length. The results showed that steel tube had good restraint to the concrete, this combination was effective to improve the bearing capacity of cross-shaped column and improve its ductility. The ultimate bearing capacity of specimens with the same cross-seotion form slightly decreased with the increase of column height while the specimens with the same column height and different cross-section forms significantly increased with the increase of column leg length, on the basis of current norms, the calculation formula for the bearing capacity of composite cross-shaped concrete filled steel tube columns under axial compression was proposed, the calculated results agreed well with the experimental results.
- composite cross-shaped,
- concrete filled steel tube,
- composite cross-shaped,
- bearing capacity,
- ductility

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References(16)

References

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