Tseung Kwan O: sheet-pile bulkhead and silt-curtain frame
A steel frame for driving a sheet-pile bulkhead and holding a silt curtain, plus a water-stop gate for the drain behind it.
- Year
- 2016
- Location
- Tseung Kwan O, New Territories
- Status
- Completed
- Category
- Temporary works
For marine works at Tseung Kwan O in December 2016 we designed a steel guide frame that sits on the seabed, keeps the sheet piles in line while they are driven, and doubles as the support for a silt curtain around the works. A separate bolted water-stop gate closes off the drain outlet behind the bulkhead, with rubber gaskets and M20 bolts so it can be taken out again afterwards.
From the drawings
The sheet-pile line runs through points A to J, CH0 to CH280, beside the Shiu Wing Steel and cement works piers. After the sheet piles, 108 H-piles of 12 m were driven, with divers working down to −5 mPD and toe levels at −17 and −21 mPD. The stop-gate panels weigh 2.2 to 11.5 tonnes, sealed with 10 mm gaskets.
Drawings
