Analytical stress-strain law of FRP confined masonry in compression: Literature review and design provisions

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15 Citazioni (Scopus)

Abstract

The use of Fibre Reinforced Polymer (FRP) wraps has become common in practical applications to retrofit existing columns with poor structural features. Wrapping the member with one or more FRP sheets makes it possible to induce confinement action and enhance strength and ductility. This application has been widely studied and adopted in reinforced concrete members for about twenty years, while its suitability to masonry columns and piers has been investigated during the last decade. The results of several studies were summarized in different design expressions for calculating effective confinement pressure, ultimate compressive stress and strain, and the overall trend of the stress-strain curve. Despite this huge amount of research, some results seem actually to be in contrast with the experimental results available in the literature, due to the different key variables arising in this application. This paper presents a comparative analysis of the main existing theoretical models to predict the stress-strain curve of FRP confined masonry in compression. Clay brick masonry is studied and criteria to obtain the strength increase are initially analyzed and compared with experimental results, evaluating the reliability of each expression. In the second part, models to calculate the overall constitutive law in compression are examined and the average error and coefficient of variation are calculated for each model.
Lingua originaleEnglish
pagine (da-a)160-169
Numero di pagine10
RivistaCOMPOSITES. PART B, ENGINEERING
Volume115
Stato di pubblicazionePublished - 2017

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Polymers
Compaction
Stress-strain curves
Fibers
Piers
Brick
Compressive stress
Ductility
Reinforced concrete
Clay
clay

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Mechanics of Materials

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title = "Analytical stress-strain law of FRP confined masonry in compression: Literature review and design provisions",
abstract = "The use of Fibre Reinforced Polymer (FRP) wraps has become common in practical applications to retrofit existing columns with poor structural features. Wrapping the member with one or more FRP sheets makes it possible to induce confinement action and enhance strength and ductility. This application has been widely studied and adopted in reinforced concrete members for about twenty years, while its suitability to masonry columns and piers has been investigated during the last decade. The results of several studies were summarized in different design expressions for calculating effective confinement pressure, ultimate compressive stress and strain, and the overall trend of the stress-strain curve. Despite this huge amount of research, some results seem actually to be in contrast with the experimental results available in the literature, due to the different key variables arising in this application. This paper presents a comparative analysis of the main existing theoretical models to predict the stress-strain curve of FRP confined masonry in compression. Clay brick masonry is studied and criteria to obtain the strength increase are initially analyzed and compared with experimental results, evaluating the reliability of each expression. In the second part, models to calculate the overall constitutive law in compression are examined and the average error and coefficient of variation are calculated for each model.",
author = "{La Mendola}, Lidia and Calogero Cucchiara and Giovanni Minafo' and Alessia Monaco and Jennifer D'Anna",
year = "2017",
language = "English",
volume = "115",
pages = "160--169",
journal = "Composites Part B: Engineering",
issn = "1359-8368",
publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Analytical stress-strain law of FRP confined masonry in compression: Literature review and design provisions

AU - La Mendola, Lidia

AU - Cucchiara, Calogero

AU - Minafo', Giovanni

AU - Monaco, Alessia

AU - D'Anna, Jennifer

PY - 2017

Y1 - 2017

N2 - The use of Fibre Reinforced Polymer (FRP) wraps has become common in practical applications to retrofit existing columns with poor structural features. Wrapping the member with one or more FRP sheets makes it possible to induce confinement action and enhance strength and ductility. This application has been widely studied and adopted in reinforced concrete members for about twenty years, while its suitability to masonry columns and piers has been investigated during the last decade. The results of several studies were summarized in different design expressions for calculating effective confinement pressure, ultimate compressive stress and strain, and the overall trend of the stress-strain curve. Despite this huge amount of research, some results seem actually to be in contrast with the experimental results available in the literature, due to the different key variables arising in this application. This paper presents a comparative analysis of the main existing theoretical models to predict the stress-strain curve of FRP confined masonry in compression. Clay brick masonry is studied and criteria to obtain the strength increase are initially analyzed and compared with experimental results, evaluating the reliability of each expression. In the second part, models to calculate the overall constitutive law in compression are examined and the average error and coefficient of variation are calculated for each model.

AB - The use of Fibre Reinforced Polymer (FRP) wraps has become common in practical applications to retrofit existing columns with poor structural features. Wrapping the member with one or more FRP sheets makes it possible to induce confinement action and enhance strength and ductility. This application has been widely studied and adopted in reinforced concrete members for about twenty years, while its suitability to masonry columns and piers has been investigated during the last decade. The results of several studies were summarized in different design expressions for calculating effective confinement pressure, ultimate compressive stress and strain, and the overall trend of the stress-strain curve. Despite this huge amount of research, some results seem actually to be in contrast with the experimental results available in the literature, due to the different key variables arising in this application. This paper presents a comparative analysis of the main existing theoretical models to predict the stress-strain curve of FRP confined masonry in compression. Clay brick masonry is studied and criteria to obtain the strength increase are initially analyzed and compared with experimental results, evaluating the reliability of each expression. In the second part, models to calculate the overall constitutive law in compression are examined and the average error and coefficient of variation are calculated for each model.

UR - http://hdl.handle.net/10447/222043

UR - http://www.sciencedirect.com/science/article/pii/S1359836816322144

M3 - Article

VL - 115

SP - 160

EP - 169

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

SN - 1359-8368

ER -