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Seismic retrofit of columns in buildings for flexure using concrete jacket

Kaliyaperumal, G and Sengupta, AK (2009) Seismic retrofit of columns in buildings for flexure using concrete jacket ISET Journal of Earthquake Technology, 46 (2). pp. 77-107.

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Abstract

To prevent disaster in future earthquakes, the existing deficient buildings need to be retrofitted. One way of retrofitting the columns in reinforced concrete multistoreyed buildings is concrete jacketing. The present study has investigated the effect of jacketing on the flexural strength and performance of columns. First, slant shear tests were conducted to study the interface between the old and new concrete. Second, column specimens were tested to study the strength. Third, beam-column-joint sub-assemblage specimens were tested to study the ductility (or energy absorption) and energy dissipation. Analytical investigations were carried out to predict the experimental results. A lamellar approach and a simplified method of analysis were used for the prediction of the axial load versus moment interaction curves and moment versus curvature curves for the retrofitted columns. An incremental nonlinear analysis was adopted to predict the lateral load versus displacement behaviour for a retrofitted sub-assemblage specimen. Guidelines for the retrofitting of columns by concrete jacketing are provided.

Item Type: Article
Authors :
NameEmailORCID
Kaliyaperumal, Gg.kaliyaperumal@surrey.ac.ukUNSPECIFIED
Sengupta, AKUNSPECIFIEDUNSPECIFIED
Date : 1 June 2009
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:02
Last Modified : 17 May 2017 12:02
URI: http://epubs.surrey.ac.uk/id/eprint/833733

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