The Hills M2 Motorway upgrade is a $500 Million project comprising widening of the existing motorway between Baulkham Hills and North Ryde. The structural works comprised significant retrofitting of the existing bridge structures as well as widening the existing Norfolk Tunnel. Demolition of several structures was also required as part of the project.
Our infrastructure team was responsible for the development of the temporary works to enable the complex retrofit works to be constructed. Work packages included:
- Hanging formwork structures
- Acoustic and containment structures for tunnel widening works
- Temporary access bridges
- Climbing formwork systems
- Bridge demolition methodology
- General structure demolition methodology
- Tower crane installations
- Walkway brackets and temporary stability systems for precast Super Tee girder installation
Robert Bird Group Services:
Key technical challenges
- The primary tower structure consists of a composite slab and beam structure. Due to the long beam spans and thin slab, extensive analysis for footfall vibration was required to ensure the structure achieved code requirements and client expectations.
- Working with the existing structure and developing design solutions that strengthened rather than demolished.
- Extensive co-ordination with the mechanical engineer to develop a strategy that minimised beam penetrations and beam notches.
- Differential shortening analysis with consideration of mega truss, steel structure, concrete structure and existing structural elements
- 5 Star Greenstar
- 5 Star NABERs Energy and 4 Star NABERs Water ratings.