Moderate impact: Condition survey of the sewer to determine extent of re-lining North Yarra Main requirement. Sewer Investigate potential requirement to the sewer at detailed design stage Lloyd Street Minor impact to abutment Assess settlement impact on the bridges retaining walls on shallow bridge structures and implement any foundations strengthening works required. Essendon Rail Conduct very close monitoring of Flyover ground movements as TBM excavations advance towards these bridges West Melbourne Minor impact Subject to confirmation at detailed Terminal Station (Induced pile deformations, design stage (tower with raked moments and shear forces pile foundations) all expected to be structurally acceptable) CityLink Viaduct (pier with pile foundations) Parkland and waterways Moonee Ponds Negligible to minor impact Impact Management: sites to be Creek and bike remediated on completion of works, if path required Table Tunnel sector 2: Arden station to Parkville station Preliminary assessment findings Potential mitigations Buildings Typical for the Negligible to minor impact Impact Management: fine cracks could area be treated during normal decoration. Repointing may be required of external cracks to ensure weather-tightness Women’s Negligible damage is Impact Management: footpaths and Hospital predicted for each road could require resurfacing on structure, although completion of Melbourne Metro works Victoria serviceability damage to in this area Comprehensive footpaths and road may Cancer Centre occur Existing Grattan Street bridge foundations) Existing Grattan Minor at junctions-tunnel Impact Management: inspect – Street tunnel connection to piled and undertake repairs buildings as required Royal Women’s (Potential for serviceability Hospital Service cracking at interface of tunnel piled building and tunnel)
Moderate impact: North Yarra Main Sewer Condition survey of the sewer to determine extent of re-lining requirement. Investigate potential requirement to the sewer at detailed design stage Lloyd Street bridges Minor impact to abutment retaining walls on shallow foundations Assess settlement impact on the bridge structures and implement any strengthening works required. Conduct very close monitoring of ground movements as TBM excavations advance towards these bridges Essendon Rail Flyover West Melbourne Terminal Station (tower with raked pile foundations) Minor impact (Induced pile deformations, moments and shear forces all expected to be structurally acceptable) Subject to confirmation at detailed design stage CityLink Viaduct (pier with pile foundations) Parkland and waterways Moonee Ponds Creek and bike path Negligible to minor impact Impact Management: sites to be remediated on completion of works, if required Table Tunnel sector 2: Arden station to Parkville station Preliminary assessment findings Potential mitigations Buildings Typical for the area Negligible to minor impact Impact Management: fine cracks could be treated during normal decoration. Repointing may be required of external cracks to ensure weather-tightness Women’s Hospital Negligible damage is predicted for each structure, although serviceability damage to footpaths and road may occur Impact Management: footpaths and road could require resurfacing on completion of Melbourne Metro works in this area Victoria Comprehensive Cancer Centre Existing Grattan Street bridge foundations) Existing Grattan Street tunnel Minor – at junctions-tunnel connection to piled buildings (Potential for serviceability cracking at interface of piled building and tunnel) Impact Management: inspect and undertake repairs as required Royal Women’s Hospital Service tunnel
MMRP_Chapter-19_Ground-Movement.docx