A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VIBRATION MEASUREMENT DEVICE AND VIBRATION MEASUREMENT METHOD
PROBLEM TO BE SOLVED: To provide a vibration measurement device and a vibration measurement method capable of easily acquiring vibration characteristics of a structure.SOLUTION: A device for measuring vibration characteristics of a structure includes measurement means having a sensor placed at one or two positions on the structure, and analysis means for calculating a vibration mode of the structure on the basis of a signal from the measurement means, and the analysis means calculates primary and secondary vibration modes on the basis of the signal from the measurement means when an impact is imparted to the structure. Accordingly, a natural frequency of the structure can be calculated from the primary and the secondary vibration modes. Thereby, earthquake resistance or a deterioration state of the structure can be estimated based on the natural frequency of the structure. Further, the sensor is only required to be placed at one or two positions on the structure, and therefore, work for measuring the vibration can be reduced, and the cost can be also reduced.
【課題】構造物の振動特性を簡便に把握できる振動測定装置および振動測定方法を提供する。【解決手段】構造物の振動特性を測定する装置であって、構造物に１カ所または２カ所設置されるセンサーを備えた測定手段と、該測定手段からの信号に基づいて構造物の振動モードを算出する解析手段と、を備えており、該解析手段は、構造物に衝撃が加わった際における前記測定手段からの信号に基づいて、１次および２次の振動モードを算出するものである。このため、次および２次の振動モードから構造物の固有振動数を算出することができる。すると、構造物の固有振動数に基づいて、構造物の耐震性や劣化の状態を推定することができる。しかも、センサーは、構造物に１カ所または２カ所設置するだけでよいので、振動を測定するための作業を低減でき、コストも押さえることができる。【選択図】図１
VIBRATION MEASUREMENT DEVICE AND VIBRATION MEASUREMENT METHOD
PROBLEM TO BE SOLVED: To provide a vibration measurement device and a vibration measurement method capable of easily acquiring vibration characteristics of a structure.SOLUTION: A device for measuring vibration characteristics of a structure includes measurement means having a sensor placed at one or two positions on the structure, and analysis means for calculating a vibration mode of the structure on the basis of a signal from the measurement means, and the analysis means calculates primary and secondary vibration modes on the basis of the signal from the measurement means when an impact is imparted to the structure. Accordingly, a natural frequency of the structure can be calculated from the primary and the secondary vibration modes. Thereby, earthquake resistance or a deterioration state of the structure can be estimated based on the natural frequency of the structure. Further, the sensor is only required to be placed at one or two positions on the structure, and therefore, work for measuring the vibration can be reduced, and the cost can be also reduced.
【課題】構造物の振動特性を簡便に把握できる振動測定装置および振動測定方法を提供する。【解決手段】構造物の振動特性を測定する装置であって、構造物に１カ所または２カ所設置されるセンサーを備えた測定手段と、該測定手段からの信号に基づいて構造物の振動モードを算出する解析手段と、を備えており、該解析手段は、構造物に衝撃が加わった際における前記測定手段からの信号に基づいて、１次および２次の振動モードを算出するものである。このため、次および２次の振動モードから構造物の固有振動数を算出することができる。すると、構造物の固有振動数に基づいて、構造物の耐震性や劣化の状態を推定することができる。しかも、センサーは、構造物に１カ所または２カ所設置するだけでよいので、振動を測定するための作業を低減でき、コストも押さえることができる。【選択図】図１
VIBRATION MEASUREMENT DEVICE AND VIBRATION MEASUREMENT METHOD
振動測定装置および振動測定方法
MORI SHINICHIRO (author)
2015-10-22
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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