Research on Ultimate Bearing Capacity of Self-stressing Concrete-Filled Steel Tube Based on Unified Strength Theory

MENG Chungui; PENG Linxin; TENG Xiaodan

doi:10.13204/j.gyjzG20112707

Volume 52 Issue 1

Apr. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(1): 26-30,38

MENG Chungui, PENG Linxin, TENG Xiaodan. Research on Ultimate Bearing Capacity of Self-stressing Concrete-Filled Steel Tube Based on Unified Strength Theory[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 26-30,38. doi: 10.13204/j.gyjzG20112707

Citation:

MENG Chungui, PENG Linxin, TENG Xiaodan. Research on Ultimate Bearing Capacity of Self-stressing Concrete-Filled Steel Tube Based on Unified Strength Theory[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 26-30,38. doi: 10.13204/j.gyjzG20112707

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Research on Ultimate Bearing Capacity of Self-stressing Concrete-Filled Steel Tube Based on Unified Strength Theory

doi: 10.13204/j.gyjzG20112707

MENG Chungui¹,
PENG Linxin^1,2,
TENG Xiaodan^{1,2,3
,
,}

1. School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China;
2. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, China;
3. Guangxi Xinfazhan Communications Group Co., Ltd., Nanning 530028, China

Received Date: 2020-11-27
Available Online: 2022-04-24

Abstract

Abstract

By using self-stressing concrete can improve the coordination between steel tube and concrete and meet the practical engineering requirements. In order to predict the ultimate bearing capacity, the stress analysis of self-stressing CFST column under axial compression was carried out based on twin-shear unified strength theory. The reduction factor of slenderness ratio was introduced and the self-stressing of concrete was considered for calculating constraint coefficient k. A new theoretical calculation method for the ultimate bearing capacity of self-stressing CFST column was established. The results obtained by this method were in good agreement with available experimental data, and the effects of concrete strength, steel yield strength, self-stress value, steel tube wall thickness and steel tube outer diameter on the ultimate bearing capacity of self-stressing CFST column were further analyzed, the influencing order of each factor was:steel tube outer diameter>steel tube wall thickness>concrete strength>steel yield strength>self-stress value.
- twin-shear unified strength theory,
- self-stressing,
- concrete-filled steel tube,
- column,
- ultimate bearing capacity

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References(17)

References

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