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.

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.

Citation

Thermou, G. E., Papanikolaou, V. K., & Hajirasouliha, I. (2021). Structural performance of RC columns retrofitted with steel-reinforced grout jackets under combined axial and lateral loading. Engineering Structures, 245, Article 112946. https://doi.org/10.1016/j.engstruct.2021.112946

• 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
• 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.