Shear Strengthening of a PC Bridge with NSM CFRP Rectangular Bars

Bridges worldwide are falling into a state of disrepair caused by deterioration, traffic overloading, and poor maintenance. It is estimated that over 100,000 of the half million existing bridges in the US are in need of repair or replacement. Although the full replacement option could be viable, it is an expensive solution with significant disruption of service. This paper focuses on the use of carbon fiber reinforced polymer (CFRP) rectangular bars installed as near surface mounted (NSM) reinforcement for shear strengthening in conjunction with an externally bonded pre-cured CFRP laminate to increase the flexural capacity of a prestressed concrete (PC) bridge girder. The specimen, which was removed from an overloaded bridge in Kansas was strengthened and tested in the laboratory. Test results showed that the proposed NSM reinforcement technique represents an effective solution to increase shear capacity

STRENGTHENING OF A BRIDGE USING TWO FRP TECHNOLOGIES

Boston, USA. S. Rizkalla and A. Nanni Eds., ACI Special Publication No. 215, American Concrete Institute, Farmington Hills, M

Istruzioni per la Progettazione, l’Esecuzione ed il Controllo di Interventi di Consolidamento Statico mediante l’utilizzo di Compositi Fibrorinforzati Materiali, strutture di c.a. e di c.a.p., strutture murarie CNR-DT 200 R1/2013

Raccomandazioni CNR-DT 200 R1/201

Guide for the design and construction of externally bonded FRP systems for strengthening existing structures

Versione in inglese delle raccomandazioni del Consiglio Nazionale delle Ricerche CNR-DT 200 R