Paper Title:

Research on Bearing Capacity of Steel Tube-Reinforced Concrete Column Subjected to Eccentric Compression Load

Periodical Advanced Materials Research (Volumes 163 - 167)
Main Theme Advances in Structures
Edited by Lijuan Li
Pages 66-73
DOI 10.4028/www.scientific.net/AMR.163-167.66
Citation Quan Quan Guo et al., 2010, Advanced Materials Research, 163-167, 66
Online since December, 2010
Authors Quan Quan Guo, Jie Ting Hu
Keywords Eccentric Compression, Isoparametric Element, Nonlinear Analysis, Steel Tube-Reinforced Concrete Column, Ultimate Capacity
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Abstract

Nonlinear constitutive law was used in this paper. On the basis of plain section assumption, through isoparametric element theory, nonlinear secant and tangent stiffness matrices of section were derived. Nonlinear equation was solved by Newton-Raphson method. The bearing mechanism under the eccentric compression was revealed by changing eccentricity and position coefficient. The result is found to be in good agreement with the experimental data, and it shows that large and minor eccentricity failure mode, which are similar to reinforced concrete, are existed in steel tube-reinforced concrete column. In addition, force-moment correlation curve is derived. By calculation and comparison. The ultimate capacity is found to be greatly underestimated in the current technical specification.