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Patent Searching and Data


Title:
WITHDRAWING WORK FOR EXISTING HOLLOW PILE
Document Type and Number:
Japanese Patent JPS5673722
Kind Code:
A
Abstract:

PURPOSE: To permit the smooth and exact withdrawal of an existing hollow pile without causing any break at a joint, etc., by a method in which drawing out the hollow pile through a drawing bar material is performed by converting the pulling force of the bar material into a pushing-up force.

CONSTITUTION: A drawing steel bar 3 is inserted into an existing hollow pile 1 buried underground from the ground's surface and the lower end of the drawing steel bar 3 is integrally fixed to the inner bottom portion of the existing hollow pile 1 with the aid of a solidifier 5. Afterwards, the drawing steel bar 3 projecting from the upper end of the existing hollow pile 1 is drawn out upwards so as to pull the existing hollow pile 1 up and then a fluid material is injected 9 into a void 12 between the outer bottom portion of the pile and the ground, which is produced when the existing hollow pile 1 is pulled up.


Inventors:
KITA KENSUKE
Application Number:
JP15150579A
Publication Date:
June 18, 1981
Filing Date:
November 22, 1979
Export Citation:
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Assignee:
OKUMURA CONSTR CO LTD
International Classes:
E02D9/02; (IPC1-7): E02D9/02