NONLINEAR ANALYSIS OF CONCRETE-FILLED SQUARE STEEL TUBULAR BEAM-COLUMN SECTIONS UNDER BENDING AND AXIAL LOAD

Zhang Lan

doi:10.13204/j.gyjz201305028

Volume 43 Issue 5

Dec. 2014

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Zhang Lan. NONLINEAR ANALYSIS OF CONCRETE-FILLED SQUARE STEEL TUBULAR BEAM-COLUMN SECTIONS UNDER BENDING AND AXIAL LOAD[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(5): 132-136,143. doi: 10.13204/j.gyjz201305028

Citation:

Zhang Lan. NONLINEAR ANALYSIS OF CONCRETE-FILLED SQUARE STEEL TUBULAR BEAM-COLUMN SECTIONS UNDER BENDING AND AXIAL LOAD[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(5): 132-136,143. doi: 10.13204/j.gyjz201305028

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NONLINEAR ANALYSIS OF CONCRETE-FILLED SQUARE STEEL TUBULAR BEAM-COLUMN SECTIONS UNDER BENDING AND AXIAL LOAD

doi: 10.13204/j.gyjz201305028

Zhang Lan^1,2

1.
1. School of Engineering,Hunan Agricultural University,Changsha 410128,China;
2.
2. School of Civil Engineering,Hunan University,Changsha 410082,China

Received Date: 2012-12-27
Publish Date: 2013-05-20

Abstract

Abstract

Nonlinear analysis of member sections play an important role in structural seismic investigation.Based on the triaxial-force feature of the steel, a constitutive model of steel suitable for concrete-filled square steel tubular beam-column was proposed for establishing moment-curvature envelop curve, meanwhile hoop tension stress was considered in this model;a fiber-based numerical model program for beam-columns subjected to bending and axial load was developed with the proposed steel constitutive model and the existing confined concrete constitutive model.The influence on moment-curvature envelop curve of concrete-filled square steel tubular beam-column from those parameters, including steel ratio, steel yield strength, concrete strength and axial compression ratio, was studied respectively.The trilinear envelop curve model of concrete-filled square steel tubular beam-column was proposed by the analysis of yield moment and ultimate bending moment, and this model could be used for the structural dynamic analysis of projects.
- beam-column,
- fiber-based model,
- steel ratio,
- axial compression ratio,
- trilinear envelop curve model

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References(10)

References

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