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Title:

Rehabilitation of Timber Railroad Bridges with FRP Composites

Accession Number:

01128754

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Use of glass fiber reinforced polymer (GFRP) composite materials to rehabilitate timber Railroad Bridge is investigated in this research. Two different rehabilitation methods were developed and utilized to strengthen timber stringers using GFRP. These are composites referred to as GFRP spray lay-up and vacuum bagging of GFRP wraps. Tests were conducted on four full scale (8”×16”×12”) timber stringers in the WVU-CFC laboratory under four point bending loads. These creosote treated timber stringers were loaded up to 20% of their ultimate loads to verify their shear properties. The stringers were then repaired using the above two rehabilitation methods and retested to failure. Strengthening the stringers with GFRP composites increased the shear moduli of the two specimens by 41% and 267%. Rehabilitation and load testing were carried out on a 50+ year-old open-deck-timber railroad bridge on the South Branch Valley Railroad (SBVR) owned by west Virginia Department of Transportation (WVDOT) in Moorefield, WV. Field rehabilitation involved repairing piles using GFRP composite wraps and phenolic formaldehyde adhesives. Using a 80-ton locomotive, static and dynamic tests were performed to determine the dynamic response of the substructure. Rehabilitated SBVR Bridge No. 574 showed a 32% and 42% strain reduction in the piles and pile cap, respectively.

Monograph Accession #:

01120148

Report/Paper Numbers:

09-3576

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Hota, GangaRao V.S.
Vijay, P V
Abhari, Reza S

Pagination:

19p

Publication Date:

2009

Conference:

Transportation Research Board 88th Annual Meeting

Location: Washington DC, United States
Date: 2009-1-11 to 2009-1-15
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures; Photos; References (17) ; Tables (2)

Uncontrolled Terms:

Bridge maintenance

Geographic Terms:

West Virginia

Subject Areas:

Bridges and other structures; Highways; Maintenance and Preservation; Railroads; I60: Maintenance

Source Data:

Transportation Research Board Annual Meeting 2009 Paper #09-3576

Files:

TRIS, TRB

Created Date:

Jan 30 2009 7:59PM