DRIVING TOWER FOR PREFABRICATED DRAIN MATERIAL IN WATER

PURPOSE:To drive a drain material with exact verticality as well as prevent the breakage of a mandrel by landing a tower incorporated with the mandrel at the driving position (horizontal face) of a prefabricated drain material by a working ship. CONSTITUTION:Anchor plates are attached to a prefabric...

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Bibliographic Details
Main Authors ABE TETSUO, YOKOYAMA JIROU, MAEHARA KOUICHI
Format Patent
LanguageEnglish
Published 19.09.1984
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:PURPOSE:To drive a drain material with exact verticality as well as prevent the breakage of a mandrel by landing a tower incorporated with the mandrel at the driving position (horizontal face) of a prefabricated drain material by a working ship. CONSTITUTION:Anchor plates are attached to a prefabricated drain material (PD) by a working ship 1. A tower 2 incorporated with a mandrel 3 is landed on the driving position (horizontal face) of PD with verticality and the mandrel 3 and the PD are concurrently driven to a given depth into the soft ground by a penetrator. The mandrel 3 alone is pulled out of the soft ground by a drawer and housed in the tower 2, and the tower 2 with the mandrel 3 is pulled up by the working ship 1 and moved to next driving position. Since the tower 2 can be set on the bottom under water as an independent unit, the breakage of the mandrel can be prevented and the PD can be driven with exact verticality.
Bibliography:Application Number: JP19830037529