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Title:
POLYETHYLENE PIPE EARTHQUAKE-PROOF STRUCTURE
Document Type and Number:
Japanese Patent JP2014098484
Kind Code:
A
Abstract:

To improve ground displacement absorption capability of a polyethylene pipe extending through a structure in a direction perpendicular to a tube axis of the polyethylene pipe.

An earthquake-proof structure improves earthquake resistance of a polyethylene pipe 10 extending through a structure K in a direction perpendicular to a tube axis of the polyethylene pipe 10. A sheath pipe 20 has an inner diameter larger than an outer diameter of the polyethylene pipe 10 and covers the polyethylene pipe 10 disposed outside the structure K over a set length or more. The sheath pipe 20 is secured to an outer surface of the structure K. A cushion layer 30 is defined in space between the polyethylene pipe 10 and the sheath pipe 20.


Inventors:
MIZUKAWA KENJI
SUZUKI TAKASHI
ONUMA HIROMI
OMICHI YASUYUKI
Application Number:
JP2013214112A
Publication Date:
May 29, 2014
Filing Date:
October 11, 2013
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
F16L5/00; E02D27/34
Domestic Patent References:
JPS5343224A1978-04-19
JPS5923179A1984-02-06
JPH0755063A1995-03-03
JPH09273667A1997-10-21
JPH10196851A1998-07-31
JP2001116171A2001-04-27
JP3062570U1999-10-08
Attorney, Agent or Firm:
Patent Business Corporation Ark Patent Office