For the revetment structure of an artificial island project in Hong Kong, it has been decided that “Sheet Piling Cell Construction Method”, using about 100,000 tonnes of “Straight Web type Sheet Piles” from Nippon Steel Corporation.
Nippon Steel and Nippon Steel Trading are to supply the entire requirement of 100,000 tonnes of Straight Web type Sheet Piles for this project manufactured at Nippon Steel’s Yawata Works in Kitakyushu City in Fukuoka Prefecture and delivered over a period of one year from January 2012.
Features of Nippon Steel’s Straight Web type Sheet Piles
1. Manufactured lengths of 38 meters
2. Maximum interlock strength of 5,880 KN/m
3. Maximum angle of deviation for an interlocking swing of 10
The sheet piling cell construction method forms a cylindrical cell about 30 meter in diameter by interlocking individual piles in cylindrical form and, carrying the cell to the installation site, driving them into the required depth, then filling the inside of the cell with earth and sand, etc.
Outline of the HKBCF project
Of the main project of the 40 kilometer road construction connecting Hong Kong and Macao, this HKBCF project will build an artificial island, for locating the entry & exit control office, on the east side of Hong Kong International Airport. The HKBCF project owner is the government of the Hong Kong Special Administrative Region and construction is being executed by China Harbour Engineering Company Limited, a subsidiary for the overseas business of China Communications Construction, a leading Chinese general contractor.
The HKBCF, 6.14 kilometer in total circumference, requires 134 cylindrical cellular structures for the revetment construction. The HKBCF project, officially inaugurated at the site on December 14 is scheduled for completion in 50 months.
This massive use of 100,000 tonnes of Straight Web type Sheet Piles for a single project is the biggest ever in size as compared with the Kisarazu artificial island of the Tokyo Trans Bay Highway, which used about 20,000 tonnes of Straight Web type Sheet Piles.
