EP 0301114 B1 19910703 - PROCESS FOR DRIVING PILE SECTIONS UNDER WATER
Title (en)
PROCESS FOR DRIVING PILE SECTIONS UNDER WATER
Publication
Application
Priority
EP 87110889 A 19870728
Abstract (en)
[origin: JPS6436822A] PURPOSE: To save working time and labor and to reduce cost by a method wherein two ramming devices of light and heavy devices are driven by a single electrohydraulic drive unit and an underwater pile previously rammed by the light device is really rammed by the heavy device. CONSTITUTION: A heavy first ramming device 1 suspended from a support rope 4 and a light ram device 15 suspended from a support element 3 are sunk in sea and a second ramming device 15 is placed on an underwater pile 14. Further, a electrohydraulic type drive unit 2 is arranged at the side or below the second ramming device 15, and the two ramming devices 1 and 15 are intercoupled through pipes 9 and 10. After a pile 14 is previously rammed by the second ramming device, the device is immediately placed on a subsequent pile 14', the first pile 14 is regularly rammed by the first ramming device 1 and the subsequent pile 14' is previously rammed by the second ramming device 15. By this constitution, the size and thickness of the pile can be confined to a necessary minimum limit.
IPC 1-7
IPC 8 full level
E02D 7/06 (2006.01); E02D 7/02 (2006.01); E02D 7/10 (2006.01); E21B 7/124 (2006.01)
CPC (source: EP US)
E02D 7/02 (2013.01 - EP US); E02D 15/08 (2013.01 - EP US); E02D 27/52 (2013.01 - EP US); E21B 7/124 (2013.01 - EP US); Y10S 173/01 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0301114 A1 19890201; EP 0301114 B1 19910703; DE 3771216 D1 19910808; JP H0678616 B2 19941005; JP S6436822 A 19890207; NO 168315 B 19911028; NO 168315 C 19920205; NO 873378 D0 19870812; NO 873378 L 19890130; US 4818149 A 19890404; US 4872514 A 19891010
DOCDB simple family (application)
EP 87110889 A 19870728; DE 3771216 T 19870728; JP 25452287 A 19871007; NO 873378 A 19870812; US 13390187 A 19871215; US 27559288 A 19881114