PRESTRESSED CONCRETE BOX GIRDER BRIDGES WITH FOLDED STEEL PLATE WEBS

In a prestressed concrete box girder bridge, the need to contain and deviate the longitudinal tendons of the internal prestressing increases the web thickness and the self-weight of the deck. As the span increases, the reduction of dead load is a primary need. It is the most important load, resisted first by the construction equipment, and then by the structure itself. Reductions to dead load permit savings in equipment costs while creating a reserve for service loads. External prestressing allows the combination of conventional materials to create innovative prestressed composite structures. Compared with conventional prestressed concrete box girders, these structural schemes are lighter and more efficient, and may extend the field of application of several conventional construction techniques. (A)

• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • ROSIGNOLI, M
• Conference:
  • PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS: STRUCTURES AND BUILDINGS
• Publication Date: 1999-2

Language

• English

Media Info

• Features: References;
• Pagination: p. 77-85
• Serial:
  • Volume: 134
  • Issue Number: 1

Subject/Index Terms

• TRT Terms: Bridges; Composite materials; Design; Prestressed concrete; Steel
• ITRD Terms: 3455: Bridge; 9005: Composite; 9011: Design (overall design); 4796: Prestressed concrete; 4542: Steel
• Subject Areas: Bridges and other structures; Design;

Filing Info

• Accession Number: 00761756
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, ATRI
• Created Date: Apr 15 1999 12:00AM