Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Strengthening of masonry arches with fiber-reinforced polymer strips
This paper deals with masonry arches and vaults strengthened with surface fiber-reinforced polymer (FRP) reinforcement in the form of strips bonded at the extrados and/or intrados, considering strip arrangements that prevent hinged mode failure, so the possible failure modes are: 1. crushing, 2. sliding, 3. debonding, and 4. FRP rupture. The failure modes of a masonry arch whose hinged mode failures (mechanisms) are prevented by FRP reinforcement were analyzed to obtain the ultimate load for each mode of failure, the lowest of which constitutes the strength of the reinforced masonry arch. Parametric analyses have shown that the load-bearing capacity can be increased significantly using a small quantity of surface FRP reinforcement, but the entity of said increment depends largely on the arrangement of the reinforcement. It is not only the location of the reinforcement that influences strength, but also the spacing and the width of the strips, or the number of blocks to which a strip is bonded. Finally, to prevent the collapse mechanism by bonding external FRP reinforcement and consequently force the arch to fail by other less critical modes, lends the structure: 1. a significant increase in load-bearing capacity, greater than for the hinging modes; 2. an appreciable reduction in lateral thrust, and 3. a more certain and predictable ultimate behavior.
Strengthening of masonry arches with fiber-reinforced polymer strips
This paper deals with masonry arches and vaults strengthened with surface fiber-reinforced polymer (FRP) reinforcement in the form of strips bonded at the extrados and/or intrados, considering strip arrangements that prevent hinged mode failure, so the possible failure modes are: 1. crushing, 2. sliding, 3. debonding, and 4. FRP rupture. The failure modes of a masonry arch whose hinged mode failures (mechanisms) are prevented by FRP reinforcement were analyzed to obtain the ultimate load for each mode of failure, the lowest of which constitutes the strength of the reinforced masonry arch. Parametric analyses have shown that the load-bearing capacity can be increased significantly using a small quantity of surface FRP reinforcement, but the entity of said increment depends largely on the arrangement of the reinforcement. It is not only the location of the reinforcement that influences strength, but also the spacing and the width of the strips, or the number of blocks to which a strip is bonded. Finally, to prevent the collapse mechanism by bonding external FRP reinforcement and consequently force the arch to fail by other less critical modes, lends the structure: 1. a significant increase in load-bearing capacity, greater than for the hinging modes; 2. an appreciable reduction in lateral thrust, and 3. a more certain and predictable ultimate behavior.
Strengthening of masonry arches with fiber-reinforced polymer strips
Verstärkung von gemauerten Bögen mit faserverstärkten Kunststoffstreifen
Foraboschi, Paolo (Autor:in)
Journal of Composites for Construction ; 8 ; 191-202
2004
12 Seiten, 18 Bilder, 23 Quellen
Aufsatz (Zeitschrift)
Englisch
Mauerwerk , Gewölbekonstruktion , Gewölbebogen , Verstärkung (Festigkeit) , faserverstärkter Kunststoff , Streifen , Versagensart , Zerkleinern (Zermahlen) , Gleiten , Delaminierung (Schichtablösung) , Bruch (Material) , mathematisches Modell , Vorhersage , Tragfähigkeit , Festigkeitserhöhung , Klebverbindung , Belastungsprüfung (Mechanik)
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