BRIDGE ENCLOSURE
Techniques are considered for bridge construction inspection, maintenance, upgrading and operation with minimum traffic disruption, improved safety and convenient clear boundaries between responsible authorities. Enclosure of a bridge superstructure within a durable outer skin, which also provides access within that skin, greatly reduces many of these difficulties. Enclosure protects the structure and provides safe access for whatever purpose without the need to disrupt traffic above or below. Consequently the authority responsible for an enclosed structure does not need to interface with the other authorities who would otherwise be affected by work on an unenclosed structure. These benefits both practical and in terms of whole life costing are illustrated by four case studies: the existing bridge enclosures at Durham and Bromley, those currently being built at the Second Severn Crossing Approach Roads, and the study carried out for the SCI publication "Replacement Steel Bridges for Motorway Widening". Design criteria to ensure that enclosures are structurally robust and inherently durable, while the capital costs remain with the whole life benefits, are discussed. Since whole life costing is increasingly being applied in the form of financial incentives/penalties, enclosure is shown to be first cost competitive, as well as economically attractive. (A) For the covering abstract see IRRD 877985.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0860502872
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Corporate Authors:
PTRC Education and Research Services Limited
Glenthorne House, Hammersmith Grove
London W6OL9, England -
Authors:
- IRVINE, R A
- THORPE, J E
- Conference:
- Publication Date: 1995
Language
- English
Media Info
- Features: References;
- Pagination: p. 9-20
Subject/Index Terms
- TRT Terms: Accessibility; Bridge superstructures; Bridges; Conferences; Costs; Design; Maintenance; Shells (Structural forms); Surveillance
- Uncontrolled Terms: Inside
- Geographic Terms: United Kingdom
- ITRD Terms: 9139: Accessibility; 3455: Bridge; 8525: Conference; 224: Cost; 9011: Design (overall design); 9033: Inside; 3847: Maintenance; 3333: Shell (struct); 3473: Superstructure (bridge); 9101: Surveillance; 8119: United Kingdom
- Subject Areas: Bridges and other structures; Design; Finance; Maintenance and Preservation;
Filing Info
- Accession Number: 00723099
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 0-86050-287-2
- Files: ITRD
- Created Date: Jul 26 1996 12:00AM