Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Feasibility study into the replacement or augmentation of the main cables of a long-span suspension bridge

Feasibility study into the replacement or augmentation of the main cables of a long-span... Forth Road Bridge is a long-span suspension bridge with a main span of 1006 m and side spans of some 408 m. Approach viaducts to the north and south bring the total length of the structure to just under 2500 m. The bridge was opened in 1964 and is used by over 24 million vehicles each year. All of the maintenance work on the bridge that requires lane or carriageway closures is carried out overnight or during limited weekend carriageway or lane closures to minimise delays to users on this important strategic and commuter route. During the first internal inspection of the main cables carried out in 2004 (40 years after opening) significant corrosion was found, leading to the retrofitting of acoustic monitoring and a system of dehumidification on the main cables. In addition, a second internal inspection was carried out in 2008 to try to establish the rate of corrosion found in the cables. The inspections and retrofitting works are described elsewhere. This paper deals with a feasibility study to determine if the main cables on Forth Road Bridge could be either replaced or augmented in the event that corrosion continued following the retrofitting of the dehumidification system. Another key area that was examined as part of the study but does not form part of this paper was the long term structural integrity of the cable anchorages. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures IOS Press

Feasibility study into the replacement or augmentation of the main cables of a long-span suspension bridge

Colford, B.R.; Clark, C.A.
Bridge Structures , Volume 5 (2) – Jan 1, 2009
Download PDF
15 pages

Loading next page...
 
/lp/ios-press/feasibility-study-into-the-replacement-or-augmentation-of-the-main-a8qt90wgds
Publisher
IOS Press
Copyright
Copyright © 2009 by IOS Press, Inc
ISSN
1573-2487
eISSN
1744-8999
DOI
10.1080/15732480903142500
Publisher site
See Article on Publisher Site

Abstract

Forth Road Bridge is a long-span suspension bridge with a main span of 1006 m and side spans of some 408 m. Approach viaducts to the north and south bring the total length of the structure to just under 2500 m. The bridge was opened in 1964 and is used by over 24 million vehicles each year. All of the maintenance work on the bridge that requires lane or carriageway closures is carried out overnight or during limited weekend carriageway or lane closures to minimise delays to users on this important strategic and commuter route. During the first internal inspection of the main cables carried out in 2004 (40 years after opening) significant corrosion was found, leading to the retrofitting of acoustic monitoring and a system of dehumidification on the main cables. In addition, a second internal inspection was carried out in 2008 to try to establish the rate of corrosion found in the cables. The inspections and retrofitting works are described elsewhere. This paper deals with a feasibility study to determine if the main cables on Forth Road Bridge could be either replaced or augmented in the event that corrosion continued following the retrofitting of the dehumidification system. Another key area that was examined as part of the study but does not form part of this paper was the long term structural integrity of the cable anchorages.

Journal

Bridge Structures – IOS Press

Published: Jan 1, 2009

There are no references for this article.