Title:
EARTHQUAKE RESISTANCE DIAGNOSIS METHOD FOR BUILDING AND SYSTEM THEREFOR
Document Type and Number:
Japanese Patent JP3931973
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To properly grasp a damage situation of a building damaged by earthquake.
SOLUTION: First, a building for earthquake resistance diagnosis is vibrated at a minute deformation level, and the natural frequency in X and Y directions of the building is calculated as the aged natural frequency f2x, f2y by measuring the vibration, respectively (101). On the other hand, the natural frequency in X and Y directions when the building is in a sound condition is evaluated as the natural frequency f1x, f1y, respectively (102). Next, values f2x /f1x, f2y /f1y obtained by dividing the aged natural frequency f2x, f2y by the initial natural frequency f1x, f1y are calculated as reduction rates of the natural frequency of the building for each direction (103). Then, damage situations of the building are estimated from the reduction rates of the natural frequency of the building f2x /f1x, f2y /f1y for each X and Y direction, respectively (104).
Inventors:
Watabiki, Makoto
Application Number:
JP2002000189391
Publication Date:
March 23, 2007
Filing Date:
June 28, 2002
Export Citation:
Assignee:
SUMITOMO FORESTRY CO LTD
International Classes:
E04B1/00; G01M7/02; G06F17/10; G06F17/13; E04B1/00; G01M7/00; G06F17/10; G06F17/11; (IPC1-7): E04B1/00; G01M7/02; G06F17/10; G06F17/13