Cross River Rail
The Cross River Rail Project will deliver a new 10.2km rail line between Dutton Park and Bowen Hills including 5.9km of twin tunnel under the Brisbane River and the Brisbane CBD. The project also includes the construction of 4 new high capacity underground railway stations at Boggo Road, Woolloongabba, Albert Street, Roma Street and the redevelopment of two existing overground stations at Dutton Park and Exhibition Showgrounds.
Rail Planning Services prepared a report for the delivery of the construction works required for the proposed Northern and Southern Portal. The Northern Portal works includes, new alignment of the surface tracks, a new Down Exhibition track including construction of a new viaduct and upgrading of Exhibition Station. The Southern Portal works includes new alignment of surface tracks, a trough structure and new pedestrian tunnel.
Rail Planning Services input, through the Design Development stages of the project enabled the design to be honed to facilitate construction with reduced impact on the existing network and within the project timeframes. Outputs for the client include detailed Staging Diagrams considering the key disciplines of Track, Civil, Electrical, Signalling & Communication and optimized use of possessions and critical resources, together with a Constructability Report.
The interface between Cross River Rail tunnel and the existing Queensland Rail network was analysed at the northern and southern ends (portals). A detailed construction methodology was delivered for both portals and temporary alignments were required to integrate -the CRR tracks and minimise the disruption to the current services. Stakeholder coordination between Cross River Rail Delivery Authority (CRRDA), Queensland Rail (QR), Technical Advisors, and Rail Planning Services (RPS) was critical to liaise with the activities of the tunnel construction and portal structure.
Some of the structural challenges included the reinforcement of the existing freight flyover and the electrification to allow passenger trains movements during construction.
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