Title:
BUILDING SOUNDNESS DIAGNOSING METHOD BASED ON CONTINUOUS MICROMOTION MEASUREMENT
Document Type and Number:
Japanese Patent JP3925910
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To measure microtremors of buildings excited by wind force, traffic vibrations, or the like, to identify the vibration characteristics of a target building by extracting only vibration components on the whole of the building included in a record of the measurement, and to evaluate structural soundness with respect to the interior of the building and the foundation portion of the building.
SOLUTION: A building soundness diagnosing method comprises a first step for using an ARMAMA model (Autoregressive Moving-Average and Moving-Average model) made by adding a moving average term (an MA term) to an ARMA model (Autoregressive Moving-Average model), finding a cross spectrum of one arbitrary criterial signal with remaining referential signals among microtremors records of a building measured by a vibration sensor, separating correlative components and non-correlative components from each other with respect to the criterial signal and the referential signals, and thus extracting only vibration components on the whole of the building, a second step for identifying the vibration characteristics of the building from the result of the first step, and a third step for calculating the rigidity of the building and of its foundation portion from the identification result of the vibration characteristics of the building.
More Like This:
| JP3353268 | EXCITER FOR VEHICLE |
| JP2004219083 | VIBRATION GENERATOR |
| WO/1987/006693 | SHAKER TABLE AMPLIFIER |
Inventors:
Kanazawa, Kenji
Application Number:
JP2002000127413
Publication Date:
March 09, 2007
Filing Date:
April 26, 2002
Export Citation:
Assignee:
CENTRAL RES INST OF ELECTRIC POWER IND
International Classes:
G01M7/02; (IPC1-7): G01M7/02