Accelerated bridge construction: Auckland electrification project bridges

Innovative design, new construction techniques and staged construction saved both time and money and reduced the impact of construction on heavily trafficked Auckland roads. The adoption of an accelerated bridge construction philosophy during design enabled rapid bridge construction. Innovative solutions were developed based around the concept of using accelerated bridge construction principles to minimise construction periods of the bridges and associated disruption to road and rail. This involved the extensive use of precast elements with innovative techniques to connect the precast elements. To minimise the associated road works and avoid resource consent triggers, slender construction techniques were used for the design of the bridge decks, including a conventionally reinforced 325mm deep twin portal and fully integral and simply supported beams with slenderness ratios of 35 and 32 respectively. Mt Wellington Highway plus Browns, Station, Jutland and Morrin Road Bridges have been replaced as part of KiwiRail’s Auckland Electrification Project. All bridges had substandard lateral and vertical clearances required to facilitate the future electrification. The Auckland Electrification Project undertake by KiwiRail aims to deliver an electrified metropolitan rail network to Auckland, New Zealand, by 2013. These fast-tracked projects were successfully delivered using conventional procurement model, from award of concept design through to implementation (full construction) within 11 months with Jutland Road Bridge replaced over live rail within a five week period and three months early.

Language

  • English

Media Info

  • Pagination: 10p
  • Monograph Title: A comparison of bore sounding, global stiffness and through compression wave non-destructive testing of Australian hardwood timber bridges

Subject/Index Terms

Filing Info

  • Accession Number: 01472859
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Feb 19 2013 10:15AM