ELASTIC ANALYSIS OF CONCRETE BRIDGES AND THE ULTIMATE LIMIT STATE

A code of practice for bridges (b116) is shortly to be published, which is written in terms of limit state design. For concrete bridges, this code allows the results of an elastic analysis, based upon uncracked concrete stiffnesses, to be used in designing a bridge at the ultimate limit state. During the period when the code was circulated for comment in draft form, the validity of such a design procedure was questioned by a number of designers. It is the purpose of this paper to attempt to explain why the procedure is satisfactory. The basic reason for this is that the elastic solution everywhere satisfies the equilibrium equation and thus gives a statically admissible stress field, which is a requirement for a safe lower bound design in terms of limit analysis. In addition, elastic solutions are readily obtainable for most bridge structures and will ensure that ductility and serviceability problems do not generally arise. /Author/TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03066452
• Corporate Authors:

  Whitehall Technical Press Limited

  Wrotham Place
  Wrotham, Sevenoaks, Kent ME14 1PE,   England 
• Authors:
  • CLARK, L A
• Publication Date: 1977-10

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 22-24
• Serial:
  • Highway Engineer
  • Volume: 24
  • Issue Number: 10
  • Publisher: Whitehall Press Limited
  • ISSN: 0306-6452

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Building codes; Concrete; Concrete bridges; Design; Elastic analysis; Equilibrium methods (Structural analysis); Loads; Mathematical analysis; Standards; Stiffness; Structural analysis; Structural design; Ultimate load design
• Old TRIS Terms: Elastic analysis (Structural); Equilibrium methods (Structural); Ultimate strength design
• ITRD Terms: 6471: Analysis (math); 3455: Bridge; 4755: Concrete; 9011: Design (overall design); 5567: Load; 187: Specification (standard); 5931: Stiffness
• Subject Areas: Bridges and other structures; Design; Highways; Law; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00170372
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Apr 12 1978 12:00AM