Revised bridge design live loads

Design loads for Australian bridges were last reviewed in the 1970's, resulting in adoption of the T44 design vehicle. Since that time there have been significant increases in legal load limits together with major changes in vehicle configurations, all aiming at improving transport efficiency. This paper describes a project aimed at developing a revised bridge loading standard for the design and construction of Australian bridges over the next 25 years. The project was approached from a road user perspective, and aimed to look well beyond recent incremental increases in legal loading to try to find an end point in the evolution of the Australian general freight vehicle. The initial phase of the project consisted of a series of investigations into various aspects that could affect the future evolution of road freight vehicles in Australia. This focussed on the economic benefits that could arise, the stability and driveability of larger vehicles, and the effect that allowing for larger future vehicles would have upon bridge construction and pavement maintenance costs. The project is still proceeding, this paper describes the areas investigated to date, together with an outline of the proposed program to ensure that the information and logic underpinning the revised design code, and the proposed loading code itself can be widely discussed prior to final adoption of a revised standard.

Language

  • English

Media Info

  • Pagination: 51-65
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 01437009
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0855884959
  • Files: ATRI
  • Created Date: Aug 24 2012 8:15PM