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Structural performance of RC columns retrofitted with steel-reinforced grout jackets under combined axial and lateral loading

Thermou, G. E.; Papanikolaou, V. K.; Hajirasouliha, I.

Structural performance of RC columns retrofitted with steel-reinforced grout jackets under combined axial and lateral loading Thumbnail


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Dr GEORGIA THERMOU Georgia.Thermou@nottingham.ac.uk
Assistant Professor in Structural Engineering

V. K. Papanikolaou

I. Hajirasouliha



Abstract

The effectiveness of steel-reinforced grout (SRG) jacketing in improving the structural performance of deficient reinforced concrete (RC) columns is experimentally investigated in this study. Four full-scale cantilever columns were designed following the old construction practice (pre-1970s) in southern Europe. Due to lack of adequate seismic detailing, the columns were susceptible to buckling failure when subjected to combined axial loading and cyclic lateral displacement reversals, simulating seismic loading. Three alternative SRG jacketing configurations were applied differing in the number of layers and density of the Ultra High Tensile Strength Steel (UHTSS)
textile. The test results demonstrated the efficiency of SRG jacketing to modify the response of the columns with poor detailing from brittle to ductile by substantially improving their overall structural performance. Finally, code formulations were used to assess the performance of the SRG jacketed columns.

Journal Article Type Article
Acceptance Date Jul 27, 2021
Online Publication Date Aug 5, 2021
Publication Date Oct 15, 2021
Deposit Date Mar 21, 2022
Publicly Available Date Aug 6, 2022
Journal Engineering Structures
Print ISSN 0141-0296
Electronic ISSN 1873-7323
Publisher Elsevier BV
Peer Reviewed Peer Reviewed
Volume 245
Article Number 112946
DOI https://doi.org/10.1016/j.engstruct.2021.112946
Keywords Civil and Structural Engineering
Public URL https://nottingham-repository.worktribe.com/output/5961118
Publisher URL https://www.sciencedirect.com/science/article/abs/pii/S0141029621010919?via%3Dihub
Additional Information This article is maintained by: Elsevier; Article Title: Structural performance of RC columns retrofitted with steel-reinforced grout jackets under combined axial and lateral loading; Journal Title: Engineering Structures; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.engstruct.2021.112946; Content Type: article; Copyright: © 2021 Elsevier Ltd. All rights reserved.

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