Flexural Strengthening of Impacted PC Girder with FRP Composites

Abstract

The use of fiber reinforced polymer (FRP) composites to restore the original capacity of impacted prestressed and reinforced concrete (PC and RC) girders is highly effective. in many instances, FRP strengthening represents the only practical and costefficient solution to such problems. the ease and rapid installation of the external FRP reinforcement without traffic interruption is often the key parameter for the use of this technology. in this paper, the flexural strengthening of one accidentally-damaged precast PC girder of a bridge over the Gasconade River, Missouri is presented. the impact resulted in the spalling of concrete and severing of two out of 38 prestressing tendons. the location of the damage was near the mid-span of the girder. the design was based on restoring the ultimate flexural capacity of the member. This was accomplished with the installation of properly anchored carbon FRP laminates (3 plies) using manual lay-up.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Bridges; Fiber reinforced polymer (FRP); Flexure; Impact damage; Prestressed concrete; Strengthening

International Standard Book Number (ISBN)

978-087031121-5

International Standard Serial Number (ISSN)

0193-2527

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Concrete Institute, All rights reserved.

Publication Date

01 Aug 2003

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