- 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.