CHALUMNA RIVER BRIDGE

The Chalumna River Bridge, on the coastal road some 40 km south-west of East London, is an innovative prestressed concrete structure in that it is the first time external prestressing has been used on a new bridge in South Africa as well as being the first time a bridge has been launched on a double curvature in South Africa. Several aspects of this bridge are unusual and are not found in more conventional bridge: (a) the deck is fully externally prestressed; (b) the deck is launched on a double curvature; (c) during launching, the temporary bearings induce high forces in the thin-walled cross-section; (d) during launching, the diaphragms have to transfer high loads from the prestressing to the cross-section; and (e) during launching, the two segments most recently cast are unstressed. This approach has resulted in a bridge that is more durable, requires less maintenance, is easy to inspect and repair, as well as being cheaper while still satisfying the geometric requirements of the road. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03799824
• Corporate Authors:

  Concrete Society of Southern Africa

  Portland Park, P.O. Box 168
  Halfway House,   South Africa 
• Authors:
  • MARTIN, W J
• Publication Date: 1998-5

Language

• English

Media Info

• Pagination: p. 11-2
• Serial:
  • CONCRETE BETON
  • Issue Number: 89
  • Publisher: Concrete Society of Southern Africa
  • ISSN: 0379-9824

Subject/Index Terms

• TRT Terms: Bridges; Design; Prestressed concrete
• Geographic Terms: South Africa
• ITRD Terms: 3455: Bridge; 9011: Design (overall design); 4796: Prestressed concrete; 8103: South Africa
• Subject Areas: Bridges and other structures; Design;

Filing Info

• Accession Number: 00767279
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Aug 6 1999 12:00AM