JPS5758728A - Temporary coffering work for river - Google Patents

Abstract

PURPOSE: To easily perform a temporary coffering work for river in case where a structure is constructed under water of river, etc., by using a cell structure consisting of plural square struts whose each side is provided with guide grooves, sheathing plates to be fitted into the guide grooves, and partition plates when coffering water around the construction site.

CONSTITUTION: In a temporary coffering work, square cell structures 2 are orderly fabricated and connected around the construction site of structures, and then soil and sand 3 are filled in the cell structures 2 to construct a temporary cofferdam 4. In the fabrication and connection of the cell structures 2, while leveling a wide width of river bed from riber bank toward the center of the river in both upstream and downstream sides of the riber 1, struts 7 are erected in mutually facing manner, and partition plates 8 are fitted into the guide grooves 6' on the frontal side. Then, sheathing plates 9 are orderly fitted into the guide grooves 6 of the struts 7 facing each other and penetrated into the river bed. In this manner, the cell structures 2 are orderly fabricated and connected. In this case, a covering plate is laid on the upside of the fabricated cell structures 2 with banking 3.

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