Analysis of Uniaxial Dynamic Performance of Concrete-Filled Square Steel Tube Composite Column

Xi Guang Cui; Hai Dong Xu

doi:10.4028/www.scientific.net/AMM.94-96.220

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 94-96Analysis of Uniaxial Dynamic Performance of...

Analysis of Uniaxial Dynamic Performance of Concrete-Filled Square Steel Tube Composite Column

Abstract:

Considering the strain rate then puts forward the modified uniaxial dynamic constitutive model related to strain rate in concrete-filled square steel tube and the modified calculation results match well with the experimental results. Based on the above conclusion, uniaxial compression performance finite element analysis with different strain rate among 10^-5/s–10^-3/s is completed, the results showed that strain rate can obviously change the dynamic performance of the concrete-filled square steel tube. Through the analysis of the influencing factors of the core concrete compressive strength, it is showed that with the increasing of the strain rate and the improving of concrete strength, the ultimate bearing capacity of concrete-filled square steel tube is higher and the ductility is reduced. With the increasing of stirrup ratio, ultimate bearing capacity is greater and the ductility is enhanced. With the sectional dimensions increasing, the ultimate bearing capacity is greater and the ductility is enhanced.

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Periodical:

Applied Mechanics and Materials (Volumes 94-96)

Pages:

220-224

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.94-96.220

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Online since:

September 2011

Authors:

Xi Guang Cui, Hai Dong Xu

Keywords:

Ductility, Set of Hoop Coefficient, Strain Rate, Uniaxial

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