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Title:
CORROSION PREVENTION STRUCTURE AND CORROSION PREVENTION METHOD OF STEEL PIPE SHEET PILE WALL
Document Type and Number:
Japanese Patent JP2012224994
Kind Code:
A
Abstract:

To make it possible to improve the adhesion of a petrolatum anticorrosive material to a steel pipe body or a bottom side wall surface of a recess bottom part, for preventing the exterior wall surface of a steel pipe sheet pile wall from being corroded.

An exterior wall surface 9a of a steel pipe sheet pile wall 9 is covered by a plurality of anticorrosion covers 11 each composed of a petrolatum anticorrosive layer 13 brought into contact with the exterior wall surface 9a of the steel pipe sheet pile wall 9 and an anticorrosive metal plate 17 outside the petrolatum anticorrosive layer with a cushioning material 15 interposed therebetween. The plurality of anticorrosion covers 11 are fixed, with side end side parts thereof overlapped with each other in a concave bottom section 6 formed between adjacent steel pipe bodies 5. Tensile force in a circumferential direction is introduced into the cross-section arc-shaped anticorrosive metal plates 17 of the anticorrosion covers 11 covering an outer peripheral surface 5a of the steel pipe bodies 5 by a tension introduction device 31 provided in the concave bottom section 6.


Inventors:
IMAFUKU KENICHIRO
KINOSHITA KAZUHIRO
SAKAMOTO KOJI
SAISHO HIROYUKI
Application Number:
JP2011091266A
Publication Date:
November 15, 2012
Filing Date:
April 15, 2011
Export Citation:
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Assignee:
NIPPON STEEL CORP
NITTETSU CORROSION PREVENTION CO LTD
International Classes:
E02D31/06; E02B3/04; E02D5/04; E02D5/28
Domestic Patent References:
JP2011017186A2011-01-27
JP2011032744A2011-02-17
JP2001152475A2001-06-05
JPS60169351U1985-11-09
JP2011017186A2011-01-27
Attorney, Agent or Firm:
Nobuyuki Hayashi
Yasuhiko