FATIGUE ANALYSIS OF THE RAILWAY OVERBRIDGE ON PENNANT HILLS ROAD CARLINGFORD, NSW

This railway overbridge has three (8.7, 9.2, 8.5 m) continuous non-composite rolled steel I girder spans on steel trestle piers and concrete sill beam abutments. The bridge carries four lanes of traffic and was built in 1939. Its concrete deck is reinforced normal to girders with railway track rails at 0.6m spacing. An analytical study conducted by others in 1993 concluded that the bridge was satisfactory for a 29 tonne load on an articulated truck and had nil fatigue life left. Subsequently RTA Technology was engaged to determine the true capacity and the remaining fatigue life of the structure by load test. The instrumentation, monitoring, data logging and reporting of results of the test were conducted by the University of Technology Sydney. It was concluded from the test results that the bridge has adequate capacity to carry the current legal loads and also has a further fatigue life of over 30 years. This paper discusses the fatigue load test including difficulties associated with instrumentation, the methodology used in determining the remaining fatigue life of the structure and in general the benefits of conducting such a test. (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. 273-82

Subject/Index Terms

• TRT Terms: Bridges; Conferences; Fatigue (Mechanics); Loads; Maintenance; Mathematical analysis; Metal bridges; Steel bridges; Tests
• Geographic Terms: Australia
• ITRD Terms: 6471: Analysis (math); 8006: Australia; 3455: Bridge; 8525: Conference; 5579: Fatigue (mater); 5567: Load; 3847: Maintenance; 3465: Metal bridge; 6255: Test
• Subject Areas: Bridges and other structures; Maintenance and Preservation;

Filing Info

• Accession Number: 00754091
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0-85588-495-9
• Files: ITRD, ATRI
• Created Date: Oct 27 1998 12:00AM