Techno Press
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Steel and Composite Structures   Volume 9, Number 5, October 2009, pages 397-418
DOI: http://dx.doi.org/10.12989/scs.2009.9.5.397
 
Flexural behaviour and capacity of composite panels of light gage steel and concrete
L. Shi, Y. Liu, J. L. Dawe and P. Bischoff

 
Abstract     [Full Text]
    Eight panel specimens were tested in one-way bending to study the behaviour and capacity of composite slab joists consisting of cold-formed steel C-sections and concrete. Various shear transfer mechanisms were implemented on the C-section flange embedded in the concrete to provide the longitudinal shear resistance. Results showed that all specimens reached serviceability limit state while in elastic range and failure was ductile. Shear transfer achieved for all specimens ranged from 42 to 99% of a full transfer while specimens employed with shear transfer enhancements showed a greater percentage and therefore a higher strength compared with those relying only on surface bond to resist shear. The implementation of pre-drilled holes on the embedded flange of the steel C-section was shown to be most effective. The correlation study between the push-out and panel specimens indicated that the calculated moment capacity based on shear transfer resistance obtained from push-out tests was, on average, 10% lower than the experimental ultimate capacity of the panel specimen.
 
Key Words
    composite; cold-formed steel; light gage; shear transfer; flexural capacity.
 
Address
L. Shi; Dept of Civil Engineering, Univ. of New Brunswick, Fredericton, NB, Canada
Y. Liu; Dept of Civil and Resource Engineering, Dalhousie Univ., NS, Canada
J. L. Dawe; Dept of Civil Engineering, Univ. of New Brunswick, Fredericton, NB, Canada
P. Bischoff; Dept of Civil Engineering, Univ. of New Brunswick, Fredericton, NB, Canada
 

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