homebush bay rail link l 700 lineal metres of precast concrete arch l 9 different profiles.8 x 2.5...
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Homebush Bay Rail LinkHomebush Bay Rail Link
700 lineal metres of precast concrete arch 9 different profiles. 8 x 2.5 to 19 x 8 900 units.
Reinforced soil with precast concrete facing. 6 bridges.9,000 Square metres. Aquatic centre basement walls, 3,000 square metres 3 different panel types/finishes.
Reinforced soil with steel mesh facing. 2,000 square metres. Arch foundations plus basement walls.
Precast Concrete ArchesPrecast Concrete Arches 2 piece, 3 pinned precast concrete arch system Advanced design techniques and a flexible
moulding system supplies a customised shape and size to suit your needs
Arch DesignArch Design
Finite Element Analysis Elasto-plastic soil properties with
varying elastic modulus (“Duncan model”); concrete linear elastic
Vertical and horizontal soil pressure and soil structure interaction determined by finite element analysis
Construction sequence modelled in the analysis, including compaction loading
Friction elements to allow slip between soil and arch
Arch ConstructionArch Construction Once the first 4 units are installed, 1 crane can be
used for installation
Constraints on Arch DesignConstraints on Arch Design
Cover over crown of arch Volume of excavation Stability under train impact loading Complex geometry Waterproofing of the precast joints
Arches supported on steel mesh Arches supported on steel mesh faced reinforced soil wallsfaced reinforced soil walls
ConclusionConclusion Fast-track design and construct programme Driven tunnel reduced disruption Architectural finishes developed in conjunction with
architects and suppliers Precast arch solution to the cut and cover tunnels provided
economic and rapid construction without loss of construction flexibility
Design applied principles of Ecologically Sustainable Development
Reinforced soil and arch structures are inherently energy efficient, using soil-structure interaction to utilise the compressive strength of soil
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