The use of fiber reinforced polymer (FRP) materials for the strengthening of masonry and concrete structures, represents a valid alternative to traditional techniques. Indeed, many advantages are provided by using FRPs: lightweight, good mechanical properties, corrosionresistant, etc. In Italy, the use of FRP materials for reducing the seismic vulnerability of existing structures has been allowed for the first time through O.P.C.M. 3274 and more recently by the D.M. 14.01.2008, that refer to the Italian National Research Council Design Guidelines (CNR-DT 200/2004) for the external strengthening of existing structures with FRP materials. These guidelines provide, within the framework of the Italian regulations, a document for the design and construction of externally bonded FRP systems for the strengthening of existing structures. In particular, several issues concerning the seismic rehabilitation of Reinforced Concrete (RC) and masonry buildings have already been dealt but a further investigation is still required. Within this context, the main aim of this research line has been the experimental validation of design indications provided by the CNR-DT 200/2004 guidelines. The main topics investigated in this research task can be summarized as follows: - the mechanical behaviour of FRP materials; - the cyclic behaviour of RC elements strengthened by means of FRP; - the mechanical and chemical anchorage devices for FRP systems; - the ductility increasing of RC columns confined with FRP; - the RC joint strengthening with FRP; - the masonry strengthening with FRP; - the historical structure strengthening with FRP; - the quality control and monitoring of FRP applications; - the innovative fibers (steel fabrics, natural fibers, FRP grids, etc.) and matrices (organic and inorganic); - the mechanical behaviour of concrete structures reinforced with fiber reinforced polymer bars; - innovative strengthening techniques (near-surface mounted (NSM) technique, FRP prestressed systems).

Progetto esecutivo RELUIS - Linea 8 - Task 8.2:"Delaminazione sotto azioni cicliche per strutture in c.a. ed in muratura, valutazione della lunghezza di ancoraggio, sviluppo di sistemi meccanici di ancoraggio"

SAVOIA, MARCO
2006

Abstract

The use of fiber reinforced polymer (FRP) materials for the strengthening of masonry and concrete structures, represents a valid alternative to traditional techniques. Indeed, many advantages are provided by using FRPs: lightweight, good mechanical properties, corrosionresistant, etc. In Italy, the use of FRP materials for reducing the seismic vulnerability of existing structures has been allowed for the first time through O.P.C.M. 3274 and more recently by the D.M. 14.01.2008, that refer to the Italian National Research Council Design Guidelines (CNR-DT 200/2004) for the external strengthening of existing structures with FRP materials. These guidelines provide, within the framework of the Italian regulations, a document for the design and construction of externally bonded FRP systems for the strengthening of existing structures. In particular, several issues concerning the seismic rehabilitation of Reinforced Concrete (RC) and masonry buildings have already been dealt but a further investigation is still required. Within this context, the main aim of this research line has been the experimental validation of design indications provided by the CNR-DT 200/2004 guidelines. The main topics investigated in this research task can be summarized as follows: - the mechanical behaviour of FRP materials; - the cyclic behaviour of RC elements strengthened by means of FRP; - the mechanical and chemical anchorage devices for FRP systems; - the ductility increasing of RC columns confined with FRP; - the RC joint strengthening with FRP; - the masonry strengthening with FRP; - the historical structure strengthening with FRP; - the quality control and monitoring of FRP applications; - the innovative fibers (steel fabrics, natural fibers, FRP grids, etc.) and matrices (organic and inorganic); - the mechanical behaviour of concrete structures reinforced with fiber reinforced polymer bars; - innovative strengthening techniques (near-surface mounted (NSM) technique, FRP prestressed systems).
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/87337
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