Advanced Steel Construction

Vol. 11, No. 4, pp. 469-491 (2015)


Research on the Membrane Action of Profiled Steel Sheet-Concrete Composite Floors in Fire 

 

Shenggang Fan 1,*, Wenjun Sun 1, Hongzhao Wei and Meijing Liu 2

1 Key Laboratory of Conrete and Prestressed Concrete Structure of Ministry of Education, School of civil engineering, Southeast University, Nanjing, 210096, China

2 Department of civil engineering, Southeast University Chengxian College, Nanjing, 210088, China

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

 

DOI:10.18057/IJASC.2015.11.4.5

 

ABSTRACT:
Based on the ISO-834 standard fire curve, fire tests on 2 full-scale profiled steel sheet-concrete composite floors were conducted. The behavior and crack developing process of a composite floor in fire was studied. The change laws of the temperature field distribution and the deflection were given. The failure mode and formation mechanism of the membrane action for the profiled steel sheet-concrete composite floors in fire were revealed. Using the finite element software ABAQUS, the numerical simulation and parametric analysis were performed to research the factors that influence on the membrane action of a composite floor in fire. The results show that the length-to-width ratio, the reinforcement strength and the reinforcement ratio are the main influential factors on the membrane action of a composite floor. The length-to-width ratio less than 2.0 is recommended to make full use of the membrane action of a composite floor. Improving the reinforcement strength and reinforcement ratio can contribute to the bearing capacity of the composite floor with the membrane action considered. Finally, the production condition and judging criteria of the membrane action in a composite floor under fire were also proposed.


Keywords: Composite floor; Membrane action; Fire; Temperature field; Bearing capacity

 

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