A Simplified Method for Concrete-Filled Steel Tube Column Analysis

Abstract:

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To construct a finite element model of concrete-filled steel tube column which is suitable to practical engineering analysis, a double-beam (DB) element is proposed. The element is made up of two coinciding beams which simulate steel tube and kernel concrete respectively. The parameters analysis results show that a concrete-filled steel tube column should be divided into four or more DB elements to make the error of fundmental frequency less than 5%. Moreover, based on design codes of the concrete structures and steel-concrete mixed structure of tall buildings, a simplified constitutive model of kernel concrete is developed to consider the confinement effects of steel tube on the concrete. The results of numerical example show that the P-△ curve based on the simplified model is consistent with the experimental results, but the ultimate bearing capacity is less than experimental results. Therefore, the model has a reasonable reliability and can be a reference for similar engineering design analysis.

Info:

Periodical:

Advanced Materials Research (Volumes 368-373)

Edited by:

Qing Yang, Li Hua Zhu, Jing Jing He, Zeng Feng Yan and Rui Ren

Pages:

537-541

DOI:

10.4028/www.scientific.net/AMR.368-373.537

Citation:

D. G. Pan et al., "A Simplified Method for Concrete-Filled Steel Tube Column Analysis", Advanced Materials Research, Vols. 368-373, pp. 537-541, 2012

Online since:

October 2011

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Price:

$35.00

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