The New Intercity Fleet Maintenance Facility situated between Ourimbah and Tuggerah on the New South Wales (NSW) North Coast Line provides expansive service and maintenance support for the newest generation of rolling-stock to enter service on NSW’s rail network.
The new facility required a design which could accommodate:
- Capability of heavy and light maintenance of rolling-stock on four maintenance roads
- Standing room on four outside tracks, each accommodating one long NIF train (205m)
- New wheel lathe road, adjacent wheel lathe building, bio and graffiti wash facility and associated roads
- Ancillary buildings providing systems to support the operation of the facility – including a train wash building, traction substation, transformer padmounts, security building, waste storage building, signal bungalows and location cases
- Access overbridge and associated roadworks to site
- Service relocation works
- New Turpentine Road Bridge to accommodate two new lines to the train wash and maintenance facility.
SMEC was engaged by John Holland Group (JHG) as the lead engineering consultant to provide engineering design services for the civil works, combined serviced routes (CSR), utilities, buildings and structures, bridges and piling design. SMEC also provided verification of the new access bridge and roadworks for enabling work, geotechnical investigations and reporting.
This project required innovative design to enable the construction of heavy-duty foundations to support the train maintenance building and bridge abutments (for heavy vehicle and rail access) in challenging ground conditions, including deep, soft compressible soils.
To minimise any impact on the local community from noise caused by traditional pile foundations, a slab-on-ground solution was developed which utilised coal bottom ash, a by-product of power generation. The use of light-weight coal bottom ash fill will help to reduce settlement of the slab over time. Combined with extensive construction phase instrumentation and monitoring, this allowed for the use of a slab foundation for the main facility, rather than less efficient, and noisy, piled slab construction.
SMEC’s design included a streamline combined services route (CSR) placing all electrical cables in the stabling yard within the footpaths. This provides a clean and uncongested design, improving safety from an operational and maintenance point of view.
- Technical Area:
- Transport for New South Wales