5.7.6 St Peters Interchange Portal

Transcription

1 5.7.6 St Peters Interchange Portal Design intent At St Peters interchange the design approach to the tunnel portals differs from that adopted for the western portals at Kingsgrove. An entirely different set of circumstances occurs at the interchange. Here, a former landfill would be transformed into a vibrant new interchange parkland, significantly increasing vegetation coverage with new passive recreation areas for the local community. The new infrastructure elements within the interchange need to sit within and be integrated with the parklands as opposed to being imposed upon them. The design provides a simple and elegant solution that unifies a range of geological issues by wrapping the portal and approaches in a giant sculptural veil form. The veil provides a light and lyrical element that would read as a sculpture within the overall interchange parkland. This approach could be adopted for the future M4-M5 Link portals adjacent to Campbell Street. Materials, colours and finishes The sculptural veil is a series of coloured rectangular aluminium sections laid in a curvilinear series at varying angles to establish a seemingly continuous, but transparent, sinuous form. It presents a unique and memorable experience for drivers entering and exiting the tunnel and also for the local community and park users who would be able to view the portals from various elevated viewpoints. The veil would also include LED feature lighting using a programmable system to provide a range of lighting effects adding to the night-time experience. Variable message signs (), lane signals and the like would be integrated in the design with service and maintenance access via a gantry behind the veil. Above the portal would be a series of retaining walls and terraces to support the installation of new soil profiles in the order of one metre deep, capable of supporting new parkland vegetation. The following pages provide preliminary plans, perspectives and sections of the portal. These would be further developed during detailed design. 96

2 ARTISTS IMPRESSION - ST PETERS TUNNEL PORTAL ARTISTS IMPRESSION - ST PETERS TUNNEL PORTAL Figure 69 Artist s impression - St Peters Tunnel Portal 97

3 - ST PETERS EASTERN PORTAL - CONCEPT PLAN A3 Figure 70 St Peters eastern portal plan 98

4 LEGEND CANTILEVERED SCREEN PANELS CANTILEVERED SCREEN PANELS x 100 RHS ALUMINUM BATTENS WITH SELECT EPOXY FINISH EDGE BARRIER x 100 RHS ALUMINUM BATTENS WITH SELECT EPOXY FINISH EDGE BARRIER LEGEND CANTILEVERED SCREEN PANELS x 100 RHS ALUMINUM BATTENS WITH SELECT EPOXY FINISH TERRAMESH RETAINING WALLS WITH 'CORTEN' STEEL FACING PANEL TERRAMESH RETAINING WALLS WITH 'CORTEN' STEEL FACING PANEL SCREEN PLANTING EDGE BARRIER 14 SCREEN PLANTING OVERHEIGHT PROTECTION BARRIER OVERHEIGHT PROTECTION BARRIER 17 FOOTING TO ENGINEERS DETAIL FOOTING TO ENGINEERS DETAIL TERRAMESH RETAINING WALLS WITH 'CORTEN' STEEL FACING PANEL SCREEN PLANTING EXISTING GROUND LEVEL OVERHEIGHT PROTECTION BARRIER SCREEN PANELS FIXED TO PORTAL STRUCTURE APPROX. 30 PANELS 17 FOOTING TO ENGINEERS DETAIL TYPICAL PANEL WIDTH URE 99 DATE: 6/07/25 12:14:54 PM LOGIN NAME: JASON CUFFE LOCATION: \\sydproj\fs\62-61a-p\working\autocad\sheet\02. TUNNEL\M5 HAS DWG UD_SPI EASTERN PORTAL.dwg WESTCONNEX STAGE 2 NEW M5 MAIN WORKS DESIGN & CONSTRUCT 1 ISSUED TO REFLECT PROJECT POST-TENDER WIDE ADDENDUM 1 JS NOT ISSUED URBAN AND LANDSCAPE DESIGN REV DATE DESCRIPTION SPI 20 EASTERN 25 mm ON A3 ORIGINAL PORTAL New M5 WestConnex ELEVATION PROJECT 17 ELEVATION - EASTERN PORTAL FEATURE SCREEN 1:250 INITIAL DATE INFORMATION SHOWN ON THIS DRAWING IS PRELIMINARY ORIGINAL DRAWING ONLY AT A3 SIZE AND SUBJECT TO DRAFTSPERSON ADJUSTMENT DURING JS DETAILED DESIGN STAGE m STATUS DRAFTING CHECK CONCEPT MG DESIGN DESIGNER NOT FOR CONSTRUCTION JS 1 : 250 FULL SIZE A3 RFT APP.2 - TENDER INFORMATION DESIGN CHECK REQUIREMENTS MG VOLUME MG PM DESIGN MANAGER 2P - URBAN AND LANDSCAPE PM DESIGN DRAWN REVIEWED APPROVAL PROJECT DIRECTOR PC CO-ORDINATE SYSTEM: MGA Zone 56 HEIGHT DATUM: A.H.D. DRAWING NUMBER REV This Drawing may have been prepared using colour and may be incomplete if copied M5-HAS-DWG UD LEIGHTON DRAGADOS SAMSUNG C&T JOINT VENTURE ST PETERS EASTERN PORTAL INFORMATION - ELEVATION SHOWN ON 1:250 DRAWING A3 IS PRELIMINARY ONLY AND SUBJECT TO ADJUSTMENT DURING DETAILED DESIGN STAGE. STATUS WESTCONNEX STAGE 2 CONCEPT DESIGN NEW M5 MAIN WORKS DESIGN & CONSTRUCT NOT FOR CONSTRUCTION RFT APP.2 - TENDER INFORMATION REQUIREMENTS VOLUME PROJECT WIDE URBAN AND LANDSCAPE DESIGN 2P - URBAN AND LANDSCAPE DESIGN DRAWING NUMBER REV SPI Figure EASTERN 71 Indicative PORTAL St Peters Eastern Portal elevation ELEVATION M5-HAS-DWG UD-70 1 PROJECT INFORMATION SHOWN ON THIS DRAWING IS PRELIMINARY ONLY

5 LEGEND CANTILEVERED SCREEN PANELS 02 SCREEN PANELS FIXED TO PORTAL STRUCTURE x 100 RHS ALUMINUM BATTENS WITH SELECT EPOXY FINISH BASEPLATE EDGE BARRIER G.M.S GANTRY STRUCTURE FOR SUPPORT & MAINTENANCE ACCESS MAINTENANCE ACCESS STAIR G.M.S SCREEN PANEL SUPPORTING FRAME SUPER 'T' GIRDER TERRAMESH RETAINING WALLS WITH 'CORTEN' STEEL FACING PANEL 12 R.C. RETAINING WALLS 13 R.C. SLAB 14 SCREEN PLANTING 15 SELECT SOIL MIX & DRAINAGE 16 OVERHEIGHT PROTECTION BARRIER 17 FOOTING TO ENGINEERS DETAIL M HIGH SECURITY FENCE SHARED USER PATH SHARED USER PATH EXISTING GROUND LEVEL 2000 TYPICAL PANEL WIDTH TOP OF FACING PANEL G.L 9.00 G.L 4.50 DATE: 6/07/25 12:14:58 PM LOGIN NAME: JASON CUFFE LOCATION: \\sydproj\fs\62-61a-p\working\autocad\sheet\02. TUNNEL\M5 HAS DWG UD_SPI EASTERN PORTAL.dwg REV DATE 13 STANDARD LINING PANELS DESCRIPTION mm ON A3 ORIGINAL 10 TRANSITION SECTION ELEVATION - EASTERN PORTAL FEATURE SCREEN 1:250 ISSUED TO REFLECT POST-TENDER ADDENDUM 1 NOT ISSUED JS MG DRAFTSPERSON DRAFTING CHECK DESIGNER DESIGN CHECK DESIGN MANAGER INITIAL DRAWN REVIEWED APPROVAL PROJECT DIRECTOR PC This Drawing may have been prepared using colour and may be incomplete if copied PM JS MG JS MG PM 16 FEATURE SCREEN PANELS DATE ORIGINAL DRAWING AT A3 SIZE LEIGHTON DRAGADOS SAMSUNG C&T JOINT VENTURE m 1 : 250 FULL SIZE A3 CO-ORDINATE SYSTEM: MGA Zone 56 HEIGHT DATUM: A.H.D. G.L ST PETERS EASTERN PORTAL - SECTION INFORMATION ELEVATION SHOWN THIS DRAWING IS A3PRELIMINARY ONLY AND SUBJECT TO ADJUSTMENT DURING DETAILED DESIGN STAGE. STATUS WESTCONNEX Figure STAGE 72 Indicative 2 St Peters Eastern CONCEPT Portal elevation DESIGN NEW M5 MAIN WORKS DESIGN & CONSTRUCT NOT FOR CONSTRUCTION RFT APP.2 - TENDER INFORMATION REQUIREMENTS VOLUME PROJECT WIDE URBAN AND LANDSCAPE DESIGN 2P - URBAN AND Urban LANDSCAPE Design DESIGN DRAWING NUMBER REV SPI EASTERN PORTAL SECTION ELEVATION M5-HAS-DWG UD-71 1 PROJECT

6 5.7.7 Bridges The interchange includes a total of six road bridges and these would form a notable feature within the interchange landscape. Attention has been paid to the design detailing of these road bridges to ensure an elegant and minimalist form. Within the interchange itself the bridges would be stacked, providing connectivity between the St Peters portal, future M4-M5 Link portal, future Sydney Gateway, the New M5 ramps to Euston and Campbell Roads and Gardeners Road. To accommodate these connections the bridges would be layered in 4 levels. With mass planting in the interchange the scale of the road bridges would be tempered. Design intent The design approach to bridges in the interchange must carefully consider their forms, spans, profile, finishes and pier rhythm in conjunction with well-coordinated detailing. The architectural treatment of the bridges is considered paramount with clean lines and incorporating piers and abutments sympathetic to the structural form. The bridges would have architecturally profiled deck soffits and barrier edges to ensure an elegant finish befitting the critical importance of the iconic interchange. Feature lighting would also be included to highlight key elements of the structures. Within the interchange there are a number of feature bridges that would provide new connections: 1. Campbell Road bridge over Alexandra Canal A dedicated road bridge would be constructed, continuing the alignment of Campbell Road east over the Alexandra Canal connecting to Bourke Road (the Campbell Road bridge). The bridge would span the entire canal and allow for two eastbound and two west bound traffic lanes. In addition a shared cycle and pedestrian path would be included on the northern side of the bridge and a footpath on the southern side. The Alexandra Canal is a state heritage listed item owing to its rarity as one of only two artificial canals constructed in NSW. The design of the bridge respects the value of the canal by ensuring a clear span over the waterway. The clear span is designed to avoid disturbing the highly contaminated Alexandra Canal bed sediments. The bridge superstructure span is made up of six steel trough girders with a cast in-situ concrete deck. The continuous spans are designed to reduce the depth of the superstructure to minimise embankment height. Figure 73 Artist impression of Campbell Road bridge 1

7 ALEXANDRA CANAL N VOLUME 2 (p) APPENDIX A N ALEXANDRA CANAL CAMPBELL ROAD CAMPBELL ROAD 02 MPBELL ROAD BRIDGE OVER ALEXANDRA CANAL - PLAN 0 CAMPBELL ROAD BRIDGE OVER ALEXANDRA CANAL - PLAN 1:500 ALEXANDRA CANAL ALEXANDRA CANAL MPBELL ROAD BRIDGE OVER ALEXANDRA CANAL - ELEVATION 02 CAMPBELL ROAD BRIDGE OVER ALEXANDRA CANAL - ELEVATION 0 1:500 LEGEND LEGEND APPROACH SLAB APPROACH SLAB REINFORCED CONCRETE PIER REINFORCED CONCRETE PIER BRIDGE ABUTMENT BRIDGE ABUTMENT SHARED PATH SHARED PATH APPROXIMATE EXISTING SURFACE LEVEL APPROXIMATE EXISTING SURFACE LEVEL 2650 DEEP STEEL TROUGH GIRDER 2650 DEEP STEEL TROUGH GIRDER FOOTPATH FOOTPATH TWIN RAIL SAFETY BARRIER TWIN RAIL SAFETY BARRIER PEDESTRIAN SAFETY FENCE PEDESTRIAN SAFETY FENCE BRIDGE DECK BRIDGE DECK CAMPBELL ROAD BRIDGE OVER ALEXANDRA CANAL - SECTION 1:200 MPBELL ROAD BRIDGE OVER ALEXANDRA CANAL - SECTION Figure 74 Indicative plan Campbell Road bridge over Alexandra Canal BRIDGES - CAMPBELL STREET BRIDGE OVER ALEXANDRA CANAL 1:200 / A3 WESTCONNEX NEW M5 MAIN WORKS URBAN AND LANDSCAPE DESIGN 39

8 2. Gardeners Road Bridge over Alexandra Canal The Gardeners Road bridge would provide an easterly connection for vehicles travelling north on the New M5. Gardeners Road bridge would provide the main eastbound route from the interchange. The design of Gardeners Road bridge would feature a clear span over water and would be similar in overall appearance to the Campbell Road bridge. It would have a similar pier shape, span, barrier/edge details and abutments so that the two bridges read as a suite. Figure 75 Indicative Gardeners Road bridge over Alexandra Canal 1