New standard bridge beams for New Zealand

This paper outlines the development of a new range of standard concrete bridge beams for the New Zealand Transport Agency (formerly Transit New Zealand and Land Transport New Zealand) to be used in the roading industry in New Zealand. The beams have been developed under a research project that culminated in the design of a range of standard beams for road bridges. These beams replace standard beams that were developed by the Ministry of Works in the 1970's. The development of the beams has been undertaken by Beca Group Ltd (Beca) and Opus International Consultants Ltd (Opus) in conjunction with Precast New Zealand. This team was awarded the project to research and develop the new standard beams in 2002. This paper describes the various project stages and how a small number of beam types were selected for detailed design and production of standard details that could be readily used by bridge designers to reduce the design effort for individual bridges, and allow standard formwork systems and details to be adopted by beam manufacturers. It describes how detailed construction drawings and specifications were developed for publication. The beam design included application of partial prestressing for standard bridge beams which ensured that cost effective state of the art solutions were developed that fully met the requirements of NZS 3101 Concrete Structures Standard, and the Transit New Zealand Bridge Manual. This paper presents an overview of the beams that have been developed and that are now available for use by industry from the New Zealand Transport Agency website. (a) For the covering entry of this conference, please see IRRD abstract no. E218160.

Language

  • English

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Filing Info

  • Accession Number: 01144028
  • Record Type: Publication
  • Source Agency: TRL
  • Files: ITRD, ATRI
  • Created Date: Nov 16 2009 12:21PM