STATIC AND REPETITIVE LOADING TESTS ON FULL-SCALE PRESTRESSED CONCRETE BRIDGE BEAMS

Crack development, bond breakdown and strand behaviour are reported for three full-scale prestressed concrete bridge beams tested under static and repetitive loading up to collapse. Mean and maximum crack widths are presented. Loads are compared with British Standard Code of Practice CP 110:1972 and with calculations using measured material properties. Strand fatigue failures are discussed and the fatigue behaviour of prestressing strand reviewed. The results indicate that if similar beams were loaded to the limit of class 2 prestressed concrete structures, failures in fatigue could be expected if the number of repetitions of load exceeds 3 x 10 to the power 6. This has implications for the use of partial prestressing. /Author/TRRL/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Irwin, CAK
• Publication Date: 1977

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 30 p.

Subject/Index Terms

• TRT Terms: Accelerated tests; Adhesion; Beams; Behavior; Bond strength (Materials); Bonding; Bridge construction; Bridge foundations; Bridges; Concrete; Concrete bridges; Construction; Cracking; Failure; Fatigue tests; Load tests; Loads; Prestressed concrete; Prestressing; Repeated loads; Standards; Static loads; Width; Wire
• Uncontrolled Terms: Concrete cracking
• Old TRIS Terms: Concrete bridge structures; Static loading; Strands
• ITRD Terms: 5942: Adhesion; 3472: Beam; 9001: Behaviour; 3455: Bridge; 5211: Cracking; 5520: Failure; 5567: Load; 4796: Prestressed concrete; 5588: Repetitive loading; 187: Specification (standard); 4520: Wire
• Subject Areas: Bridges and other structures; Construction; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00170324
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: TRRL Lab Report 802 Monograph
• Files: ITRD, TRIS
• Created Date: Jun 28 1978 12:00AM