Soil-water coupled analyzer and soil-water coupled analysis method

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United States of America Patent

PATENT NO 7966165
APP PUB NO 20090164179A1
SERIAL NO

12083302

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Abstract

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The soil-water coupled analysis program of the invention computes a global L matrix and a modified global L matrix regarding a volume change rate of a soil skeleton over time, a global H matrix regarding a water permeability of soil, a global M matrix regarding a mass, and a global K matrix regarding a tangent stiffness of the soil skeleton, based on input settings of soils, such as clay, intermediate soil, and sand, to respective elements of a soil foundation, input settings of a solid soil model, and input settings of analysis conditions (steps S140 to S165). The soil-water coupled analysis program formulates a global tangent stiffness equation (simultaneous linear equations) using all these computed matrixes and determines an unknown `jerk field` and a `pore water pressure field` under given boundary conditions, for example, a given deformation condition and a given stress rate condition (step S170). This enables highly-accurate dynamic and static analyses in soil foundations of various soils from sand to intermediate soils and clay.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITYNAGOYA-SHI AICHI171

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asaoka, Akira Kyoto, JP 25 176
Nakano, Masaki Nagoya, JP 156 2531
Noda, Toshihiro Nagoya, JP 11 9

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
* 6234008 Method and apparatus for the direct measurement of moisture characteristics of porous samples of soil, wood, concrete and the like 13 1999
 
SANDIA NATIONAL LABORATORIES (1)
* 7003405 Methods for characterizing subsurface volatile contaminants using in-situ sensors 29 2002
 
TOHOKU TECHNO ARCH CO., LTD. (1)
6694815 Liquefaction phenomenon prediction system 1 2003
 
NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY (1)
* 6937939 Soil measuring instrument, soil measurement assisting device and method, recorded medium on which a program is recorded, recorded medium on which data is recorded, application amount controller, application amount determining device, method for them, and farm working determination assisting system 40 2000
* Cited By Examiner

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