NONLINEAR FEM ANALYSIS OF SEISMIC BEHAVIOR OF L－SHAPED CONCRETE－FILLED STEEL TUBULAR COLUMN

Zhang Jicheng; Shen Zuyan; Zhou Haijun

doi:10.13204/j.gyjz201007022

Volume 40 Issue 7

Dec. 2014

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2010 > 40(7): 85-90

Zhang Jicheng, Shen Zuyan, Zhou Haijun. NONLINEAR FEM ANALYSIS OF SEISMIC BEHAVIOR OF L－SHAPED CONCRETE－FILLED STEEL TUBULAR COLUMN[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(7): 85-90. doi: 10.13204/j.gyjz201007022

Citation:

Zhang Jicheng, Shen Zuyan, Zhou Haijun. NONLINEAR FEM ANALYSIS OF SEISMIC BEHAVIOR OF L－SHAPED CONCRETE－FILLED STEEL TUBULAR COLUMN[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(7): 85-90. doi: 10.13204/j.gyjz201007022

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NONLINEAR FEM ANALYSIS OF SEISMIC BEHAVIOR OF L－SHAPED CONCRETE－FILLED STEEL TUBULAR COLUMN

doi: 10.13204/j.gyjz201007022

1.
1. School of Urban Construction,Yangtze University,Jingzhou 434023,China;
2.
2. Department of Building Engineering,Tongji University,Shanghai 200092,China

Received Date: 2009-06-30
Publish Date: 2010-07-20

Abstract

Abstract

To study the seismic behavior of L-shaped concrete-filled steel tubular column, based on experimental study and stress strain relationship of the core concrete of L-shaped concrete-filled steel tubular column subjected to low cyclic loading, nonlinear finite element method analysis of L-shaped concrete-filled steel tubular column is carried out by Opensees software. The lateral load (P) versus lateral displacement () envelope curves and its influencing factors are analyzed. The results show that the calculation results totally correspond with experimental results. The influence of the width-thickness ratio D/t on the envelope curve is similar to that of the length-width ratio D/B, which has little effect on the shape of the envelope curve but will influence the lateral loading capacity. The axial compression ratio is the main factor affecting the envelope curve of the member. In the elastic stage, the influence of the axial compression ratio on the stiffness of the member is small while it is significant in elastic-plastic stage. As the increase of the axial compression ratio, the stiffness of the member and the horizontal loading capacity will decrease.Meanwhile, the curve becomes descendent and the descent amplitude will increase as the increase of the axial compression ratio, which indicates that the ductility of the member becomes worse.
- concrete-filled steel tubular column,
- seismic behavior,
- finite element method ( FEM),
- influencing factors

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References(15)

References

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