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Patent Searching and Data


Title:
COFFERDAM STRUCTURE OF DAM BODY
Document Type and Number:
Japanese Patent JP2013091969
Kind Code:
A
Abstract:

To provide an inexpensive cofferdam structure with proper workability by reducing a dead space of an inner space.

A cofferdam structure 100 for use in construction of a through-hole in an existing dam body 1 includes a cylindrical body 20, one opening 21 of which abuts on an upstream surface 3 of the dam body so as to surround a position 4a where the through-hole 2 is to be opened, and a semielliptic dome body 10 which closes the other opening 22 of the cylindrical body 20 and the cross-section of which assumes a convex shape to the upstream side of the dam body.


Inventors:
Dobashi, Takeo
Fujiwara, Soichi
Kamata, Tomohito
Kanai, Makoto
Tokunaga, Atsushi
Shigei, Kazuya
Application Number:
JP2011000234229
Publication Date:
May 16, 2013
Filing Date:
October 25, 2011
Export Citation:
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Assignee:
OHBAYASHI CORP
HOKOKU KOGYO CO LTD
International Classes:
E02B7/00; E02D19/04
Domestic Patent References:
JP2010047927A2010-03-04
JPS62280409A1987-12-05
JPS6458709A1989-03-06
JP2010216125A2010-09-30
JP2010047927A2010-03-04
JPS62280409A1987-12-05
Attorney, Agent or Firm:
一色国際特許業務法人