Method for examining structures having high natural vibration frequency using alternating manual vibration-exciting method

1. Field of the Invention An alternating human vibration-exciting method for obtaining a free vibration waveform of buildings or civil structures having a natural vibration frequency more than 2-5 Hz. First and second same-number set of subjects having similar weights alternately apply exciting forc...

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Main Authors Yoon, Sung Won, Oh, Sang Keun
Format Patent
LanguageEnglish
Published 29.06.2004
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Abstract 1. Field of the Invention An alternating human vibration-exciting method for obtaining a free vibration waveform of buildings or civil structures having a natural vibration frequency more than 2-5 Hz. First and second same-number set of subjects having similar weights alternately apply exciting forces to a wall on a top of the structure. An electronic beat-sound generator is adjusted to a two-beat mode to generate two alternating beat sounds repeatedly so that the first and second sets can apply vibration exciting forces repeatedly at a frequency of half of the natural vibration frequency of the structure obtained by micro-tremor measurement, while alternately synchronizing their actions to the two alternating beat sounds, respectively. The vibration exciting action is stopped after the structure is brought to a sufficient resonance state, thereby obtaining a free vibration waveform.
AbstractList 1. Field of the Invention An alternating human vibration-exciting method for obtaining a free vibration waveform of buildings or civil structures having a natural vibration frequency more than 2-5 Hz. First and second same-number set of subjects having similar weights alternately apply exciting forces to a wall on a top of the structure. An electronic beat-sound generator is adjusted to a two-beat mode to generate two alternating beat sounds repeatedly so that the first and second sets can apply vibration exciting forces repeatedly at a frequency of half of the natural vibration frequency of the structure obtained by micro-tremor measurement, while alternately synchronizing their actions to the two alternating beat sounds, respectively. The vibration exciting action is stopped after the structure is brought to a sufficient resonance state, thereby obtaining a free vibration waveform.
Author Yoon, Sung Won
Oh, Sang Keun
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References Inoue et al. (6341258) 20020100
English Translation of Yoon et al., The Evaluation of Vibrations Characteristic for Low-Rise Reinforced Concrete Buildings Based on Free Vibration Test, Apr. 27, 2002.
Yoon et al., The Evaluation of Vibrations Characteristic for Low-Rise Reinforced Concrete Buildings Based on Free Vibration Test, Apr. 27, 2002.
Horiuchi et al. (5737239) 19980400
References_xml – year: 19980400
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– reference: English Translation of Yoon et al., The Evaluation of Vibrations Characteristic for Low-Rise Reinforced Concrete Buildings Based on Free Vibration Test, Apr. 27, 2002.*
– reference: Yoon et al., The Evaluation of Vibrations Characteristic for Low-Rise Reinforced Concrete Buildings Based on Free Vibration Test, Apr. 27, 2002.
– year: 20020100
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Snippet 1. Field of the Invention An alternating human vibration-exciting method for obtaining a free vibration waveform of buildings or civil structures having a...
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Title Method for examining structures having high natural vibration frequency using alternating manual vibration-exciting method
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