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Patent Searching and Data


Title:
QUALITY CONFIRMATION METHOD AND QUALITY CONFIRMATION DEVICE FOR IMPROVED GROUND
Document Type and Number:
Japanese Patent JP2014005612
Kind Code:
A
Abstract:

To appropriately and surely confirm the quality of the improved ground without using any device of a complicated structure.

A quality confirmation device includes: a penetration test device 10; and liquefaction strength estimation means 20. The penetration test device 10 includes: a bar-like body part 11 with a tapering tip; a water ejection port 12 disposed in the neighborhood of the tip of the main body 11; a pore water pressure measurement device 13 disposed in the neighborhood of the tip of the body part 11; and a water ejection device (pump 14) for ejecting water into the improved ground from the water ejection port 12. Liquefaction strength estimation means 20 estimates the liquefaction strength of the improved ground on the basis of dissipation time since a pore water pressure reaches from a peak value to a predetermined dissipation state after water is ejected into the improved ground.


Inventors:
TEZUKA HIROAKI
HAYASHI MIKIAKI
YAMANOGUCHI HIROSHI
YASUI TOSHIAKI
YAMAUCHI TAKAHIRO
Application Number:
JP2012140306A
Publication Date:
January 16, 2014
Filing Date:
June 22, 2012
Export Citation:
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Assignee:
MAEDA CONSTRUCTION
International Classes:
E02D3/12; E02D1/00
Domestic Patent References:
JPH0559715A1993-03-09
JP2005232715A2005-09-02
JP2001193048A2001-07-17
JPS62264207A1987-11-17
JP2001241031A2001-09-04
JP2010059670A2010-03-18
Other References:
地盤工学会編集委員会, 地盤工学用語辞典, vol. 第1刷, JPN6016011302, 10 March 2006 (2006-03-10), pages 130 - 131, ISSN: 0003283290
Attorney, Agent or Firm:
Yoshihide Ogawa