Title

Lrfd Flexural Provisions For Prestressed Concrete Bridge Girders Strengthened With Carbon Fiber-Reinforced Polymer Laminates

Keywords

Polymer; Prestressed concrete; Rehabilitation

Abstract

The behavior and design of prestressed concrete (PSC) bridge girders flexurally strengthened with carbon fiber-reinforced polymer (CFRP) laminates are discussed. A fiber section model that accounts for inelastic material behavior as well as the construction sequence including transfer, composite action between the cast-in-place deck and girder, and bonding of CFRP laminates, is developed. The model is verified and is then used to conduct thousands of Monte Carlo simulations of a number of bridges designed according to the 1998 AASHTO LRFD. The bridge designs address a broad range of design parameters including span length, ratio of dead load to live load, and amount of CFRP strengthening. The numerical simulations are used to develop cross-sectional resistance models from which the flexural reliability of the designed bridges is calculated using the first-order reliability method. An equation for the flexural strength reduction factor for PSC bridge girders strengthened with CFRP laminates is proposed.

Publication Date

3-1-2002

Publication Title

ACI Structural Journal

Volume

99

Issue

2

Number of Pages

181-190

Document Type

Article

Personal Identifier

scopus

Socpus ID

0036524132 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0036524132

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