- Author
- Bisby, L. A. | Kodur, V. K. R. | Green, M. F.
- Title
- Numerical Parametric Studies on the Fire Endurance of FRP-Confined Concrete Columns.
- Coporate
- National Research Council of Canada, Ottawa, Ontario
- Journal
- Canadian Journal of Civil Engineering, Vol. 31, No. 6, 1090-1100, December 2004
- Report
- NRCC-47048
- Keywords
- concrete columns | fiber reinforced polymers | fire endurance | reinforced concretes | rehabilitation | insulation | numerical models | validation | failure | thickness | thermal conductivity | specific heat
- Identifiers
- strengthening; comparison of member types; unprotected FRP-wrapped columns; FRP-wrapped and insulated columns; unwrapped but insulated reinforced concrete columns; assumed properties of FRP materials used in parametric studies; summary of columns analyzed in parametric studies
- Abstract
- Confinement of reinforced concrete columns by circumferential FRP wraps is a promising application of FRP materials for structural strengthening and seismic upgrading of deteriorated or under-strength members. However, if this technique is to be used in buildings, parking garages, and industrial structures, then the ability of FRP materials and FRP-wrapped columns to withstand the effects of fire must be demonstrated and evaluated. This paper presents the results of parametric studies conducted using a previously presented and partially validated numerical fire simulation model to investigate the effects of a number of parameters on the fire behaviour of FRP-wrapped reinforced concrete columns. It is demonstrated that appropriately designed and adequately protected FRP-wrapped reinforced concrete columns are capable of achieving fire endurances equivalent to conventionally reinforced concrete columns. Furthermore, this study also suggests that a holistic approach to the fire design of FRP-wrapped members is required, rather than an approach based on the specific performance of the FRP materials. Design recommendations for the fire-safe design of FRP-wrapped concrete columns are presented and discussed.