STEADY PROGRESS ON CARDIFF'S ALTERNATIVE TENDER VIADUCT
The 914 M long viaduct, part of the 30 km peripheral distributer road was originally designed as a steel plate girder structure with a concrete deck. An alternative design of precast glued jointed segmental concrete was requested at the tender stage. Estimated costs were L8.5 M for the comforming design and L6.7 M for the alternative, which was accepted. The viaduct, s-shaped in plan, will be carried on piers comprising two slender in situ concrete columns with a precast beam on top. The trapezoidal-box-girder-shaped segments are being match-cast on site to gain the high degree of accuracy needed, and avoiding the need to transport large units by road. To reduce bleeding and improve the external finish, pfa is being used as an additive. The erection procedure is described from the placing of the first three units at each pier taking on average 10 days to erect a span of 15 units. Closure joints at mid span are provided by an in situ concrete stitch. The final prestress is complicated by the need to join a free segment to a fixed part of the structure. (TRRL)
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00105317
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Corporate Authors:
Plenum Publishing Corporation
233 Spring Street
New York, NY United States 10013 -
Authors:
- Barfoot, F
- Publication Date: 1984-4
Media Info
- Pagination: p. 11-14
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Serial:
- CONCRETE
- Volume: 18
- Issue Number: 4
- Publisher: THE CONCRETE SOCIETY
- ISSN: 0010-5317
Subject/Index Terms
- TRT Terms: Additives; Box girders; Bridge decks; Bridge piers; Cast in place concrete; Concrete bridges; Construction management; Costs; Design; Fly ash; Glue; Installation; Joints; Precast concrete; Prestressing; Pulverized fly ash; Segmental construction; Tenders; Viaducts
- Geographic Terms: United Kingdom
- Old TRIS Terms: Pulverized fuel ash
- ITRD Terms: 137: Bid; 3474: Box girder; 3455: Bridge; 3434: Bridge pier; 4781: Cast in situ concrete; 224: Cost; 9011: Design (overall design); 4580: Fly ash; 4539: Glue; 3840: Installation; 2998: Joint (structural); 4792: Precast concrete; 4777: Prestressing; 137: Tender; 8119: United Kingdom
- Subject Areas: Bridges and other structures; Construction; Design; Finance; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00389487
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, TRIS
- Created Date: Oct 30 1984 12:00AM