Construction is nearing completion at the Port of Brisbane, Queensland, Australia for the new Southern Cross Cement Terminal, a cement storage facility comprising eight elevated silos with a combined capacity of 42,000 tonnes, two 44 metre high transfer towers and associated wharf infrastructure.
The original design of the facility was completed overseas and yielded an estimated construction cost far in excess of the asset owner’s budget. Bonacci Infrastructure provided value engineering services, which ultimately led to us being awarded a re-design contract for the concrete superstructures and piled foundations supporting the eight storage silos, as well as the piled foundations for the two transfer towers.
The site itself is on reclaimed land, with competent basalt existing at a depth of approximately 40 metres below surface level. The material above the bedrock ranges from stiff silty clay to loose silty sand. The relatively poor geotechnical nature of the site presented significant challenges for the design of the piles, including dealing with buckling effects under high compression loads, significant lateral pile forces under earthquake loading, and large axial shortening which occurs as a result of the pile lengths and sustained compressive stresses.
Construction tendering will commence soon for the Paramatta River Pedestrian and Cyclist Bridge which will cross the river at Alfred Street in Paramatta, New South Wales, Australia. Bonacci Infrastructure delivered all design documentation for the bridge from concept to detailed design.
As the Head Consultant, Bonacci Infrastructure was responsible for managing the team of architects, hydrologists, lighting engineers and various other disciplines in addition to delivering the structural and civil design packages.
The City of Paramatta was presented with two concept designs, including a cable stayed bridge and an arch bridge with a suspended composite deck which was ultimately selected. The latter arrangement includes a steel arch which crosses the Paramatta River at an oblique angle with a single span of 85 m. The bridge approach ramps and stairs are of reinforced concrete construction.
The diagonal arch, the first of its kind in Australia, created specific design challenges with out-of-plane forces and horizontal thrusts at the foundations. Pedestrian induced excitation and wind dynamics were also subject to close scrutiny.
Commissioning has reached completion at the Rubyanna Wastewater Treatment Plant in Bundaberg, Queensland, Australia.
Bonacci Infrastructure delivered both the structural and civil design packages for this $40 million project, including:
- A new 57 x 47 metre membrane bioreactor with post-tensioned floor system.
- A new 56 x 20 metre digester tank featuring a complete absence of control joints which was made possible by rigorous analysis and careful pour sequencing. The unique benefits of this solution include improved constructability and the elimination of long-term maintenance costs associated with joint repair.
- An elevated inlet works, recycled water tank, chemical dosing facilities and various building structures.
- Bulk earthworks, access roads and civil pavements across the site.
The works also included an upgrade to the Rubyanna Regional Pump Station, encompassing a new pump station / sewage receival chamber and associated infrastructure / civil works.
The Growler Airborne Electronic Attack Capability Facilities Project at RAAF Base Amberley, Queensland, Australia has reached a milestone in construction with the recent completion of Phase 1 works and the initiation of Phase 2 construction.
In conjunction with the Delamere Redevelopment Project currently under construction in the Northern Territory, this is the fourteenth major defence project undertaken by Bonacci Infrastructure as we continue to deliver high quality designs for the Australian Government – Department of Defence.