Museum Station is an underground rail station on Sydney’s City Circle line. The station was constructed in the 1920s using cut and cover techniques. The station has a reinforced concrete arch spanning over two platforms and is linked to ground level by a network of unreinforced concrete tunnels.

As part of the state government’s Easy Access Upgrade projects, it is necessary to install a series of lifts to provide access from ground level to the platforms. The heritage listed station is located below Hyde Park and adjacent to the Anzac memorial, and hence the impact of construction on the public and the heritage significance of the area had to be carefully considered.

Robert Bird Group conducted a review of the reference design and identified significant risks to the existing station. Subsequently RBG was engaged to redesign the concept for the platform lifts, delivering a scheme that provided improved access and circulation.

Sectors:
Rail
RBG Client:
Transport for NSW
Primary Contractor:
Arenco-Daracon JV

Architect:
DesignInc
Robert Bird Group Services:
Civil Engineering
Structural Engineering
Visualisation (Concept Phase)
Construction Engineering

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

Environmental performance

  • 5 Star Greenstar
  • 5 Star NABERs Energy and 4 Star NABERs Water ratings.

Features include:

  • Construction methodology and risk Review for the original concept, identifying significant structural risks to the existing station arch.
  • Led an optioneering process to identify lift shaft locations and construction methods that achieve a significantly lower risk profile.
  • Developed a pre-concept design that enabled Transport for NSW to proceed with greater confidence in the scheme.
  • Worked effectively as part of a multidisciplinary team with many stakeholders to successfully deliver a revised pre-concept design for this area.
  • Provided a structural solution with integrated construction methodology and 3D visualisations to communicate the impacts of construction to stakeholders.

RBG were subsequently engaged by Arenco-Daracon JV to deliver the Concept through Detailed Design and Construction Phases for the works, including temporary works design and staged analysis of the works as they impacted the station structures.

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