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Mechanics of Composite Materials
Published in: Mechanics of Composite Materials 2/2018

11-05-2018

Numerical Analysis of a Masonry Panel Reinforced with Pultruded FRP Frames

Authors: C. Casalegno, S. Russo, F. Sciarretta

Published in: Mechanics of Composite Materials | Issue 2/2018

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Abstract

The paper presents a numerical study on the retrofit of traditional masonry with pultruded GFRP profile frames adjacent to a wall and connected to it by mechanical fasteners. This kind of retrofit solution, not having been explored yet either in theory or practice, is similar to the common steel frame retrofits, but offers the advantages of lightness and durability of FRP composite materials. The retrofit system proposed, once proven effective and advantageous, would bring a considerable potential innovation into its available options. Three different frame geometries and two cases of masonry thickness were considered to investigate the effectiveness of the retrofit GFRP frame on the inplane static response of the wall to horizontal loads. The global and local (connection) failure behavior of the wall-frame system was investigated using the 3D finite-element method. A general increase in strength after the retrofit, up to about 130%, was found, and a switch from rocking to the diagonal tension failure mode was observed. The strength hierarchy of the retrofitted systems was also analyzed to clarify the effectiveness of the retrofit in imparting a residual strength to masonry. A thinner masonry structure was clearly recognized to have got the greatest benefits, but the retrofit could also significantly improve the inplane shear strength of a thicker wall. A comparison with steel structures of analogous capacity in terms of weight and natural vibration frequencies supported the viability of composite FRP frames for retrofit.
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Metadata
Title
Numerical Analysis of a Masonry Panel Reinforced with Pultruded FRP Frames
Authors
C. Casalegno
S. Russo
F. Sciarretta
Publication date
11-05-2018
Publisher
Springer US
Published in
Mechanics of Composite Materials / Issue 2/2018
Print ISSN: 0191-5665
Electronic ISSN: 1573-8922
DOI
https://doi.org/10.1007/s11029-018-9732-x

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