Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loads

Abstract Different reasons can make certain structures need reinforcement to achieve specific levels of safety and performance. The occurrence of events of significant magnitudes, such as earthquakes, are examples of this. Retrofitting vulnerable structures becomes a practice to mitigate the destructive effects of earthquakes, and the RC Jacketing becomes an alternative. The present work studies this type of reinforcement, proposing and applying an assessment methodology under vulnerable construction built in a high seismic risk zone. The diagnostic of the current situation was determined, and the structural suitability was evaluated using RC Jacketing. With the computational software S-Model, created in this research, the effectiveness of the proposed reinforcement was verified, based on the results of the analysis carried out with commercial software. The preload was considered, and the strength of the reinforced column section was verified against all load combinations. The S-Model program was able to verify the non-simultaneous occurrence of the amplification of moments with the most critical loading. Both conditions demand more significant stresses on the element, and therefore the calculation of the steel areas of the column may be underestimated if they are not considered.

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Main Authors: Aguero,Rosangel Rojas, Aguirre,Jose Rafael Yepez, Schmitz,Michael, Viegas,Carlos Henrique Hernandorena
Format: Digital revista
Language:English
Published: IBRACON - Instituto Brasileiro do Concreto 2022
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952022000500209
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spelling oai:scielo:S1983-419520220005002092022-04-14Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loadsAguero,Rosangel RojasAguirre,Jose Rafael YepezSchmitz,MichaelViegas,Carlos Henrique Hernandorena jacketing amplification of moments seismic vulnerability structural retrofitting software Abstract Different reasons can make certain structures need reinforcement to achieve specific levels of safety and performance. The occurrence of events of significant magnitudes, such as earthquakes, are examples of this. Retrofitting vulnerable structures becomes a practice to mitigate the destructive effects of earthquakes, and the RC Jacketing becomes an alternative. The present work studies this type of reinforcement, proposing and applying an assessment methodology under vulnerable construction built in a high seismic risk zone. The diagnostic of the current situation was determined, and the structural suitability was evaluated using RC Jacketing. With the computational software S-Model, created in this research, the effectiveness of the proposed reinforcement was verified, based on the results of the analysis carried out with commercial software. The preload was considered, and the strength of the reinforced column section was verified against all load combinations. The S-Model program was able to verify the non-simultaneous occurrence of the amplification of moments with the most critical loading. Both conditions demand more significant stresses on the element, and therefore the calculation of the steel areas of the column may be underestimated if they are not considered.info:eu-repo/semantics/openAccessIBRACON - Instituto Brasileiro do ConcretoRevista IBRACON de Estruturas e Materiais v.15 n.5 20222022-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952022000500209en10.1590/s1983-41952022000500010
institution SCIELO
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country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Aguero,Rosangel Rojas
Aguirre,Jose Rafael Yepez
Schmitz,Michael
Viegas,Carlos Henrique Hernandorena
spellingShingle Aguero,Rosangel Rojas
Aguirre,Jose Rafael Yepez
Schmitz,Michael
Viegas,Carlos Henrique Hernandorena
Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loads
author_facet Aguero,Rosangel Rojas
Aguirre,Jose Rafael Yepez
Schmitz,Michael
Viegas,Carlos Henrique Hernandorena
author_sort Aguero,Rosangel Rojas
title Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loads
title_short Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loads
title_full Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loads
title_fullStr Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loads
title_full_unstemmed Structural retrofitting method for evaluating RC Jacketing in columns with amplification of moments under seismic loads
title_sort structural retrofitting method for evaluating rc jacketing in columns with amplification of moments under seismic loads
description Abstract Different reasons can make certain structures need reinforcement to achieve specific levels of safety and performance. The occurrence of events of significant magnitudes, such as earthquakes, are examples of this. Retrofitting vulnerable structures becomes a practice to mitigate the destructive effects of earthquakes, and the RC Jacketing becomes an alternative. The present work studies this type of reinforcement, proposing and applying an assessment methodology under vulnerable construction built in a high seismic risk zone. The diagnostic of the current situation was determined, and the structural suitability was evaluated using RC Jacketing. With the computational software S-Model, created in this research, the effectiveness of the proposed reinforcement was verified, based on the results of the analysis carried out with commercial software. The preload was considered, and the strength of the reinforced column section was verified against all load combinations. The S-Model program was able to verify the non-simultaneous occurrence of the amplification of moments with the most critical loading. Both conditions demand more significant stresses on the element, and therefore the calculation of the steel areas of the column may be underestimated if they are not considered.
publisher IBRACON - Instituto Brasileiro do Concreto
publishDate 2022
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952022000500209
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AT schmitzmichael structuralretrofittingmethodforevaluatingrcjacketingincolumnswithamplificationofmomentsunderseismicloads
AT viegascarloshenriquehernandorena structuralretrofittingmethodforevaluatingrcjacketingincolumnswithamplificationofmomentsunderseismicloads
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