Numerical Analysis of Moment-Curvature Relations on Self-Stressing Steel-Slag- Concrete-Filled Steel Tube Columns Under Quasi-Static Loading

YU Feng; CHEN Hao; YAO Chi; QIN Yin; FANG Yuan; BU Shuangshuang

doi:10.13204/j.gyjzG22012912

Volume 53 Issue 1

Jan. 2023

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YU Feng, CHEN Hao, YAO Chi, QIN Yin, FANG Yuan, BU Shuangshuang. Numerical Analysis of Moment-Curvature Relations on Self-Stressing Steel-Slag- Concrete-Filled Steel Tube Columns Under Quasi-Static Loading[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(1): 160-168,188. doi: 10.13204/j.gyjzG22012912

Citation:

YU Feng, CHEN Hao, YAO Chi, QIN Yin, FANG Yuan, BU Shuangshuang. Numerical Analysis of Moment-Curvature Relations on Self-Stressing Steel-Slag- Concrete-Filled Steel Tube Columns Under Quasi-Static Loading[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(1): 160-168,188. doi: 10.13204/j.gyjzG22012912

Citation:

YU Feng, CHEN Hao, YAO Chi, QIN Yin, FANG Yuan, BU Shuangshuang. Numerical Analysis of Moment-Curvature Relations on Self-Stressing Steel-Slag- Concrete-Filled Steel Tube Columns Under Quasi-Static Loading[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(1): 160-168,188. doi: 10.13204/j.gyjzG22012912

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Numerical Analysis of Moment-Curvature Relations on Self-Stressing Steel-Slag- Concrete-Filled Steel Tube Columns Under Quasi-Static Loading

doi: 10.13204/j.gyjzG22012912

College of Civil Engineering, Anhui University of Technology, Ma’anshan 243002, China

Received Date: 2022-01-29
Available Online: 2023-05-25
Publish Date: 2023-01-20

Abstract

Abstract

Accroding to the seismic performance experiments of 10 self-stressing steel-slag-concrete-filled steel tube columns and 4 steel-slag-concrete-filled steel tube columns, the moment-curvature relations of specimens under quasi-static loading were studied, and the influence of different parameters were analyzed, including diameter-thickness ratios, axial compression ratios, ratios of shear spans to effective depths and expansivity of steel slag concrete. The results indicated that all specimens failed under bending, the moment-curvature skeleton curves of specimens were divided into rising stage and stable stage. As the axial compression ratio and expansivity of steel slag concrete increased, the slope of moment-curvature skeleton curves and the flexural capacity of specimens increased in both rising and stable stages. The decrease of diameter-thickness ratios led to the increase of the slope of curves and the flexural capacity of specimens in the rising stage, while the effect of diameter-thickness ratios was not obvious in the stable stage. The slope of skeleton curve increased with the increase of ratios of shear spans to effective depths in each stage, while the flexural capacity did not change obviously. Based on the experimental results, the constitutive relation models of steel tube and self-stressing steel slag concrete were selected, the whole process analysis was compiled by MATLAB, and the influence laws of each parameter on bending moment-curvature skeleton curves were analyzed by the program.
- concrete-filled steel tube column,
- self-stressing concrete,
- steel slag concrete,
- bearing capacity,
- seismic property,
- hysteretic property,
- skeleton curve,
- whole process analysis

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References(19)

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