Advanced Steel Construction

Vol. 9, No. 2, pp. 108-123 (2013)


STUDY ON BEHAVIOR OF CONCRETE FILLED ELLIPTICAL STEEL TUBE MEMBERS PART II: UNDER BENDING AND ECCENTRIC COMPRESSION

 

Xiaoxiong Zha 1, *, Guobin Gong 2 and Xichao Liu 2

1 Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China

2 Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

 

Received: 28 April 2011; Revised: 17 February 2012; Accepted: 29 February 2012

DOI:10.18057/IJASC.2013.9.2.2

 

ABSTRACT:

In this paper, based on the ideology of “unified theory”, the theoretical calculation equations of ultimate flexural capacity for concrete filled elliptical steel tube members (CFEST) around long and short axes are derived and compared with and verified by finite element simulations. Modified equations are then proposed for practical applications on the basis of the flexural capacity for circular concrete filled steel tube members. Under the guidance of “unified theory” and parametric analysis, the simplified practical calculation equations of capacity for CFEST members under eccentric compression are obtained, and mechanical behavior of a series of CFEST members with different section dimensions is conducted using finite element analysis.

 

Keywords:Elliptical concrete filled steel tube, Unified theory, Bending, Eccentric compression, Finite element, Parametric analysis

 

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