Timber bridge rehabilitation: an investigation into the use of a steel load reaction frame (jacking frame)

Some timber bridge rehabilitation work requires jacking of a corbel and attached girder away from the supporting headstock. Rather than using the ground as a direct reaction support for jacking, a steel jacking frame that hangs from the headstock timbers is utilised. During a recent inspection conducted at the RoadTek Midgee Depot, it was discovered that some of the existing jacking frame components were deformed, possibly due to in-service overload. Due to this observation, it was decided to conduct an investigation into the suitability of the existing jacking frame for the intended purpose of jacking operations associated with current timber bridge rehabilitation. The following possible options to rectify the situation were considered: 1. repair and strengthen the existing frame; 2. design and fabricate an improved frame; 3. determine a replacement method for raising the corbel/girder components. (a) For the covering record of this conference, please refer to ITRD abstract no E218285.

  • Corporate Authors:

    HALLMARK CONFERENCES AND EVENTS

    PO BOX 84
    HAMPTON,   Australia  3188
  • Authors:
    • STEEDMAN, M
    • MULLER, S
  • Publication Date: 2009-6

Language

  • English

Media Info

  • Pagination: 30P
  • Monograph Title: Australian Small Bridges Conference 2009: small, medium and local bridges, Sydney, Tuesday 7 and Wednesday 8 July 2009

Subject/Index Terms

Filing Info

  • Accession Number: 01153013
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Mar 23 2010 9:11AM