STRUCTURE OF CONCRETE FORM FOR PONTOON AND MANUFACTURE OF PONTOON

Title:

STRUCTURE OF CONCRETE FORM FOR PONTOON AND MANUFACTURE OF PONTOON

Document Type and Number:

Japanese Patent JPH04349090

Kind Code:

A

Abstract:

PURPOSE: To construct a pontoon from a buoy having a small specific gravity and a concrete shell of specified thickness enclosing the buoy, wherein the pontoon is equipped with good stability and durability, deep draft to cause lesser rocking, and with no problem about water stopping at the shell body.

CONSTITUTION: An outer form 16 is assembled, and bottom concrete 13 is placed. A buoy 11 is installed in place on this bottom concrete 13, and a buoyant preventing means 22 is provided which detains the installed buoy and fixes. The side concrete 14 is placed between the outer form 16 and buoy 11, and the mentioned buoyant preventing means 22 is removed, followed by placing of the oversurface concrete, and the outer form 16 is removed after curing for a specific period of time.

Inventors:

KAWAHARA TADAO
SHIRAIWA TADAHIRO
TAMURA TORU
NOZAKI TAKAO
YANASE TOSHIMASA

Application Number:

JP12134391A

Publication Date:

December 03, 1992

Filing Date:

May 27, 1991

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON CONCRETE IND CO LTD
FUDO CONSTRUCTION CO
FUDO KENKEN KK
YANASE SANGYO KK

International Classes:

B63B5/14; B63B35/34; B63B35/38; E01D15/14; E01D101/40; (IPC1-7): B63B5/14; B63B35/34; B63B35/38; E01D15/14

Domestic Patent References:

JPH01136889A	1989-05-30
JP3005716B

Attorney, Agent or Firm:

Hajime Sakai (2 outside)

Previous Patent: アキシャルギャップ回転電機

Next Patent: MANUFACTURE OF PONTOON