広島工業大学の講義棟Nexus21の強震計測システムとデータ処理方法

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  • The strong motion measurement system and data processing method for the lecture building Nexus21 of Hiroshima Institute of Technology
  • ヒロシマ コウギョウ ダイガク ノ コウギトウ Nexus21 ノ キョウシン ケイソク システム ト データ ショリ ホウホウ

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This research aims to provide useful information for seismic motion analysis and seismic design of structures. Data processing system is developed to get acceleration records at the lecture building Nexus21 of Hiroshima Institute of Technology (HIT) due to a strong earthquake, such as the Nankai Trough earthquake, which is feared to occur in the near future. The obtained results are as follows. (1) A list of the records of felt earthquakes for the last 10 years at HIT is summarized. (2) A processing software is created to select the three functions of “waveform display,” “spectrum display,” and “3D display”. (3) “Waveform display” and “3D display” show the acceleration, and the velocity / displacement calculated by the integration of the time history. (4) In “spectrum display”, the analysis results of the Fourier spectrum of acceleration, velocity, and displacement, in each floor and direction are presented and can be output as text. (5) Using the acceleration on the first floor of the lecture building due to the 2016 Kumamoto earthquake as an input, we attempted to verify the building response by vibration analysis.

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