Seismic resistance of fire-damaged reinforced concrete columns

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ConferenceImproving the Seismic Performance of Existing Buildings and other Structures, by the Applied Technology Council and the Structural Engineering Institute of ASCE: 09 December 2009, San Francisco
Pages13961407; # of pages: 12
SubjectSeismic resistance, fire-damaged structures, residual strength, lateral load, columns, structural performance, reinforced concrete; Fire; Concrete columns
AbstractA study was carried out on the assessment of the residual strength and lateral/seismic load capacity of reinforced concrete columns after fire exposure. The mechanical properties of concrete after fire exposure, such as residual tension and compression strength, stiffness and constitutive responses, were reviewed. A nonlinear finite element analysis program, developed for three-dimensional reinforced concrete structures, was employed to estimate the post-fire axial and lateral performance of two full-scale reinforced concrete columns, tested previously at the National Research Council Canada. The results of the axial load-deformation response obtained from the analysis were compared and verified successfully with the test data. The lateral load and deformation responses of the specimens were then estimated using the numericalprogram. The results showed that both the lateral/seismic load capacity and ductility of the two reinforced concrete column specimens decreased noticeably due to the fire exposure. Studies are suggested on fire damage mitigation and post-fire shear strength recovery of reinforced concrete columns.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number52623
NPARC number20374097
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Record identifierc91950e2-053f-4b59-b120-2cdc548dc290
Record created2012-07-23
Record modified2016-05-09
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