Behavior of fire exposed concrete-filled double skin steel tubular (CFDST) columns under concentric axial loads

Mohd Zuki, Sharifah S. and K., K. Choong and Jayaprakash, J. and Shahidan, Shahiron (2014) Behavior of fire exposed concrete-filled double skin steel tubular (CFDST) columns under concentric axial loads. In: International Integrated Engineering Summit (IIES 2014), 1-4 December 2014, Universiti Tun Hussein Onn Malaysia, Johor.

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Abstract

This paper presents the result of an experimental investigation of axial behavior of concrete-filled double skin steel tubular (CFDST) columns exposed to high temperature under the action of monotonically applied concentric axial loads. The columns were exposed to ASTM E-119 standard fire curve until 600°C and kept constant for two different exposure time (i.e., 60 and 90 minutes). Failure patterns and reduction in strength, ductility and stiffness of CFDST columns are reported. Factors influencing the strength, ductility and stiffness of CFDST columns during fire exposure, i.e., exposure time, temperature of concrete core and temperature of inner steel tube, are also discussed

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:CFDST columns; fire exposure; residual strength; concentric load; ASTM E-119 fire curve
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA630-695 Structural engineering (General)
Divisions:Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
ID Code:6606
Deposited By:Mrs. Nurhayati Ali
Deposited On:04 Jun 2015 14:23
Last Modified:04 Jun 2015 14:23

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