Harbour Area Treatment Scheme - PTW Drop Shafts & Scum Chambers
項目數據
Shaft Sites
- Aberdeen PTW Dropshaft & Scum Chamber
- Wah Fu PTW Dropshaft & Scum Chamber
- Cyberport PTW Dropshaft & Scum Chamber
- Sandy Bay PTW Dropshaft & Scum Chamber
Overall Depth:
- Aberdeen: 9.20m
- Wah Fu: 22.50m
- Cyberport: 17.80m
- Sandy Bay: 18.80m
Construction period: July - October 2014
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Concrete lining of pre-excavated shafts; 4 No. in total
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Construction of a rectangular Scum Chamber in each shaft
Wah Fu shaft: elliptical; with a finished lining size of 7.000m x 5.000m; other linings: circular with a finished lining size of 8.000m dia.
要求
- Fast construction progress, easy system operation
- Minimum crane usage for the system
- Form elements to follow the structure shape (circular, elliptical and rectangular)
- Optimized element sizes, hinges and retraction devices used for stripping, no additional assembly/ modification works necessary during the construction
- Maximum safety for workers
- Central opening in platforms for material and manpower transfer
客戶
Leighton - LNS JV
派利方案
- Vario GT 24 single sided wall formwork, with purpose-made shaped walers to obtain the profile
- RCS custom made climbing platform, requiring only 4 wall anchors thus reducing setting and repair time
- BR units inside the Scum Chambers for safe and simple support and operation