Outline of the Construction Method
The sand compaction pile (SCP) method on the sea uses dedicated SCP ships.
Three improved piles can be driven simultaneously since SCP ships have three continuous casings.
The KS-REACT method enables appropriate air control according to the depth of water and the driving depth. In addition,it is equipped with an "ASL (Radio Wave Sand Surface Position Measuring Device) system" that can measure the amount of sand in the casing tube in real-time, making it possible to construct improved piles of higher quality.
Overview of the ASL (Radio Wave Sand Surface Position Measuring Device) System
Radio Wave Sand Surface Position Measuring Device
(ASL system)
Advanced Sand Level meter
This technology measures the height of the sand surface inside the casing when the SCP is installed.
In the past, a weight was attached to a wire for measurement, but this technology can transmit radio waves for real-time measurement, enabling accurate position measurement, shortening measurement time, and ensuring quality.
GNSS Positioning System
SCP ship positioning is performed by the GNSS positioning system.The amount of deviation from the planned position is displayed on the bridge monitor of the SCP vessel from the measured position and bearing of the SCP vessel, the driving position is then recorded and managed.
Construction Results
Kansai International Airport
Izumisano City, Osaka Pref
Kobe Airport
Kobe City, Hyogo Pref
Tokyo International Airport (Runway D)
Ota Ward, Tokyo
Chubu International Airport — Centrair —
Tokoname City, Aichi Pref
Honmoku Wharf and Daikoku Wharf
Yokohama City, Kanagawa Pref
Minami Honmoku Wharf
Yokohama City, Kanagawa Pref
Construction Work of Haneda D Runway (Tokyo International Airport)
Ota Ward, Tokyo
Construction Work of Chubu International Airport
Tokoname City, Aichi Pref
Construction Work of a New island
Osaka City, Osaka Pref