Design of steel-concrete composite box girders installed by SPMT on the Regency Road to Pym Street Project

The Regency Road to Pym Street (R2P) project was a $354 million upgrade of a 1.8km section of Adelaide’s North-South corridor. The main structures were a three-span 134-metre long overpass, taking three lanes of motorway traffic in each direction over Regency Road, a 58-metre span pedestrian and cyclist overpass, 19 gantries and noise walls. The Regency Road arrangement of the overpass is three continuous spans with four box girders. The central main span length is 60-metres. At the piers, the bearings were offset from the centre of the box, so as to minimise the overall span of the overpass by allowing for tighter turning circles in the intersection around narrower piers below. To minimise work over the intersection, the main span of the overpass was constructed offline including the composite deck. The main span was moved into position in two halves using Self-Propelled Modular Transporters (SPMTs). The girders of the back spans were then erected using traditional crane lifts. This provided a balance between minimising disruption and keeping the SPMTs moves as simple as possible. Design challenges that were overcome as part of the R2P project included the application of the new AS5100.6 Fatigue code, additional Finite Element Modelling (FEM) modelling of box girders to capture effects that cannot be captured by a grillage model, and the provision of measurement criteria for the SPMTs overpass move, to ensure that the girders were not overstressed during the move.

• Record URL:
  • https://austroads.com.au/publications/bridges/abc2022-000-22
• Record URL:
  • https://arrbknowledge.com
• Authors:
  • Brown, D
  • Frandsen, C
  • McConnell, R
  • Schofield, A
• Conference:
  • Austroads Bridge Conference, 11th, 2022, Adelaide, South Australia, Australia
• Publication Date: 2022-11

Media Info

• Pagination: 18p
• Monograph Title: 11th Austroads Bridge Conference, Adelaide, 15th-18th November 2022

Subject/Index Terms

• TRT Terms: Box girders; Bridge construction; Bridge design; Bridges; Composite materials; Concrete; Finite element method; Long span bridges; Prefabricated structures; Standardization; Standards; Steel
• Uncontrolled Terms: Adelaide, South Australia
• Geographic Terms: Australia
• ATRI Terms: Australian standard; Box girder; Bridge construction; Bridge design; Concrete; Finite element method; Prefabrication; Span; Steel
• ITRD Terms: 9011: Design (overall design); 3638: Prefabrication; 3452: Span
• Subject Areas: Bridges and other structures; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01901727
• Record Type: Publication
• Source Agency: ARRB Group Limited
• Files: ITRD, ATRI
• Created Date: Dec 7 2023 2:54PM