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Title:
PILE HEAD ISOLATION STRUCTURE AND CONSTRUCTION METHOD THEREOF
Document Type and Number:
Japanese Patent JP2019100088
Kind Code:
A
Abstract:
To provide a pile head isolation structure capable of fixing a seismic isolation device with large outside diameter according to a pile diameter to the pile head while reducing the construction period by using a precast pile including a steel pipe covering the outer peripheral surface, and a construction method thereof.SOLUTION: A precast pile 2 that has a cylindrical outer shell concrete 3 integrated with a steel pipe 5 on the outer peripheral surface, the upper end of the steel pipe 5 being formed protruding upward from the upper end of the outer shell concrete 3 is manufactured in such manner that ready-mixed concrete placed inside the steel pipe 5 is hardened with a centrifugal force and solidified into a tubular shape. At the construction site, after the precast pile 2 is installed into the ground G, an inner space 2a of the pile head is filled with solidifying member 6 to be flat and a plurality of anchor bolts 4 are embedded in an upper portion of the upper end of the outer shell concrete 3 at intervals in the peripheral direction, and a seismic isolation device 10 placed on the upper face of the pile head is fixed to the precast pile 2 via the plurality of anchor bolts 4.SELECTED DRAWING: Figure 1

Inventors:
MURATA TETSUO
SUDO KATSUYA
TSUCHIDA TAKAAKI
HAYASHI HARUKA
SAKAGUCHI TOMOYA
MORI KIYOTAKA
IIZUKA SHINICHI
YAMAZAKI YASUO
OTA YUSUKE
NAKAZAWA MAKOTO
MIZUSHIMA KOSUKE
MASUNAGA SHOTA
Application Number:
JP2017232250A
Publication Date:
June 24, 2019
Filing Date:
December 04, 2017
Export Citation:
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Assignee:
TOA HARBOR WORKS CO LTD
AOKI ASUNARO KENSETSU KK
HAZAMA ANDO CORP
NISHIMATSU CONSTR CO LTD
HASEGAWA KOMUTEN KK
MITANI SEKISAN KK
International Classes:
E02D27/34; E02D5/30; E02D27/12
Domestic Patent References:
JP2011226066A2011-11-10
JP2011231574A2011-11-17
JPS57161224A1982-10-04
JP2005113413A2005-04-28
JPH0291315A1990-03-30
JP2007154558A2007-06-21
JP2000282485A2000-10-10
JP2012001981A2012-01-05
JP2009167597A2009-07-30
Foreign References:
US5775038A1998-07-07
Attorney, Agent or Firm:
Seiryu International Patent Service Corporation
Takayoshi in the daytime
Masao Sakaizawa