Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas
In Peru there is a growing demand to improve, expand or remodel existing infrastructure, which has generally been designed with structural standards less demanding than the current ones. It is for this reason that various techniques are used, such as reinforcement using FRP (fiber reinforced polymer...
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Universidad de Costa Rica
2020
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/39806 |
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| author | Bazán, Jorge L. Fernández-Dávila, Víctor I Samaniego, Juan |
| author_facet | Bazán, Jorge L. Fernández-Dávila, Víctor I Samaniego, Juan |
| author_sort | Bazán, Jorge L. |
| collection | Revista Ingeniería (RI) |
| description | In Peru there is a growing demand to improve, expand or remodel existing infrastructure, which has generally been designed with structural standards less demanding than the current ones. It is for this reason that various techniques are used, such as reinforcement using FRP (fiber reinforced polymer) systems.
Among the predominant applications of this system is the reinforcement to bending of reinforced concrete (RC) elements such as walls, slabs and especially the beams. During the application of the FRP, various interferences or constructive limitations could occur, which has led to the approach of practical and modern solutions such as the use of FRP band systems, FRP plates and bars, NSM systems, and the use of anchors made of FRP. These procedures are contemplated in the ACI's guide 440.2R (ACI, 2017), used for the construction and design of external reinforcement with FRP on RC elements.
The purpose of this article is to show the results on the laboratory experience of four RC beams, considering that only three of them were externally strengthened to bending, a solution with anchors made of FRP was also used, in order to allow the tensile behavior of the FRP external reinforcement.
The specimens tested were subjected to cyclic loads by a quasi-static test, and the results indicate that these elements strengthened with FRP bands and anchors have a resistance capacity greater than the nominal flexural capacity. In addition, the behavior exhibited throughout these tests was stable and without unexpected anomalies that have been observed. |
| first_indexed | 2024-07-10T23:59:49Z |
| format | Online |
| id | INII-RI-article-39806 |
| institution | Instituto de Investigaciones en Ingeniería (INII) |
| language | spa |
| last_indexed | 2024-07-10T23:59:49Z |
| publishDate | 2020 |
| publisher | Universidad de Costa Rica |
| record_format | ojs |
| spelling | INII-RI-article-398062021-06-09T19:48:44Z FRP anchorage usage in reinforced concrete beams externally strengthened with CFRP bands subjected to cyclic loads Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas Bazán, Jorge L. Fernández-Dávila, Víctor I Samaniego, Juan FRP strengthening FRP anchor flexure behavior cyclic loads bending Refuerzo FRP anclaje FRP comportamiento experimental carga cíclica flexión In Peru there is a growing demand to improve, expand or remodel existing infrastructure, which has generally been designed with structural standards less demanding than the current ones. It is for this reason that various techniques are used, such as reinforcement using FRP (fiber reinforced polymer) systems. Among the predominant applications of this system is the reinforcement to bending of reinforced concrete (RC) elements such as walls, slabs and especially the beams. During the application of the FRP, various interferences or constructive limitations could occur, which has led to the approach of practical and modern solutions such as the use of FRP band systems, FRP plates and bars, NSM systems, and the use of anchors made of FRP. These procedures are contemplated in the ACI's guide 440.2R (ACI, 2017), used for the construction and design of external reinforcement with FRP on RC elements. The purpose of this article is to show the results on the laboratory experience of four RC beams, considering that only three of them were externally strengthened to bending, a solution with anchors made of FRP was also used, in order to allow the tensile behavior of the FRP external reinforcement. The specimens tested were subjected to cyclic loads by a quasi-static test, and the results indicate that these elements strengthened with FRP bands and anchors have a resistance capacity greater than the nominal flexural capacity. In addition, the behavior exhibited throughout these tests was stable and without unexpected anomalies that have been observed. En Perú existe una demanda creciente de mejorar, ampliar o remodelar la infraestructura existente, que generalmente ha sido diseñada con estándares estructurales menos exigentes que los actuales. Es por esta razón que se utilizan diversas técnicas entre las que se destaca el reforzamiento mediante sistemas FRP (fiber reinforced polymer). Entre las aplicaciones predominantes de este sistema se tiene el refuerzo a flexión de elementos de concreto armado (CA) tales como muros, losas y en especial las vigas. Durante la aplicación del FRP se pueden presentar diversas interferencias o limitaciones constructivas, lo que ha dado lugar al planteamiento de soluciones prácticas y modernas como el uso de sistemas de bandas de FRP, platinas y barras de FRP, sistemas FRP del tipo NSM, y el uso de anclajes de FRP. Estos procedimientos están contemplados en la guía ACI 440.2R (ACI, 2017), utilizada para la construcción y el diseño de refuerzo externo con FRP. El presente artículo muestra los resultados sobre la experiencia en laboratorio de cuatro vigas de CA, considerando que solamente tres fueron externamente reforzadas a flexión, además incluye el uso de anclajes hechos de FRP, para desarrollar el comportamiento a tracción de la banda FRP de refuerzo externo. Los especímenes se sometieron a cargas cíclicas mediante un ensayo cuasi-estático. Los resultados indican que estos elementos, reforzados con bandas y anclajes FRP, poseen una capacidad de resistencia superior a la capacidad nominal a flexión. Además, el comportamiento exhibido durante el ensayo fue estable y sin anomalías inesperadas que se hayan observado. Universidad de Costa Rica 2020-05-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Artículo application/pdf text/html application/epub+zip https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/39806 10.15517/ri.v30i2.39806 Ingeniería; Vol. 30 No. 2 (2020): July-December 2020; 77-94 Ingeniería; Vol. 30 Núm. 2 (2020): Julio-Diciembre 2020; 77-94 Ingeniería; Vol. 30 N.º 2 (2020): Julio-Diciembre 2020; 77-94 2215-2652 1409-2441 spa https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/39806/42364 https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/39806/42365 https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/39806/42366 Derechos de autor 2020 Jorge L. Bazán, Victor I Fernandez-Davila, Dr., Juan Samaniego, Sr. |
| spellingShingle | FRP strengthening FRP anchor flexure behavior cyclic loads bending Refuerzo FRP anclaje FRP comportamiento experimental carga cíclica flexión Bazán, Jorge L. Fernández-Dávila, Víctor I Samaniego, Juan Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas |
| title | Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas |
| title_alt | FRP anchorage usage in reinforced concrete beams externally strengthened with CFRP bands subjected to cyclic loads |
| title_full | Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas |
| title_fullStr | Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas |
| title_full_unstemmed | Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas |
| title_short | Uso de anclajes FRP en vigas de concreto armado reforzados externamente con bandas CFRP sometidas a cargas cíclicas |
| title_sort | uso de anclajes frp en vigas de concreto armado reforzados externamente con bandas cfrp sometidas a cargas ciclicas |
| topic | FRP strengthening FRP anchor flexure behavior cyclic loads bending Refuerzo FRP anclaje FRP comportamiento experimental carga cíclica flexión |
| topic_facet | FRP strengthening FRP anchor flexure behavior cyclic loads bending Refuerzo FRP anclaje FRP comportamiento experimental carga cíclica flexión |
| url | https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/39806 |
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