TRUE BEHAVIOUR AND LOAD CAPACITY OF A PSC 'T' BEAM DECK

The aim of the project was to determine the true behaviour and the load capacity of the 'T' beam span of the bridge over the Railway on Weeroona Road, Strathfield West. This bridge was built in 1955, consists of a series PSC 'T' beams transversely prestressed and has a 150 mm thick asphaltic concrete wearing surface. The 'T' beams were designed for HS 20-S 16 live load and they have no shear reinforcement in them. There are similar railway overbridges under the jurisdiction of NSW Railways. The paper discusses the study undertaken by RTA Technology. Analytically lower bound and upper bound load capacities of the deck were determined respectively by modelling the deck as a series of beams and as a plate. The bridge was then proof load tested to determine how close the true deck behaviour is to these boundaries. From the study it is concluded that the deck behaviour is closer to a plate, the actual load capacity of the deck is higher than the current legal load, and the speed limit and load limit may be lifted. (a) For the covering entry of this conference, please see IRRD abstract no. 895164.

• Record URL:
  http://arrbknowledge.com
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0855884959
• Corporate Authors:

  Austroads

  Suite 2, Level 9, 287 Elizabeth Street
  Sydney, New South Wales  Australia  2000
• Authors:
  • Ariyaratne, W
  • Fok, H
• Conference:
  • AUSTROADS BRIDGE CONFERENCE, 1997, SYDNEY, NEW SOUTH WALES, AUSTRALIA, VOL 3
• Publication Date: 1997

Language

• English

Media Info

• Pagination: p. 255-71

Subject/Index Terms

• TRT Terms: Bearing capacity; Bridges; Conferences; Field tests; Loads; Mathematical analysis; Shear strength; T beams; Vehicles
• Geographic Terms: Australia
• ITRD Terms: 6471: Analysis (math); 8006: Australia; 3085: Bearing capacity; 3455: Bridge; 8525: Conference; 6226: In situ; 5567: Load; 5531: Shear; 3324: T beam; 1255: Vehicle
• Subject Areas: Bridges and other structures; Vehicles and Equipment;

Filing Info

• Accession Number: 00754090
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0-85588-495-9
• Files: ITRD, ATRI
• Created Date: Oct 27 1998 12:00AM