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図書 |
図書
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Abdolhossein Fallahi, Masaru Kitaura and Masakatsu Miyajima
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論文 |
論文
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西川 , 隼人 ; 高谷 , 富也 ; 釣 , 健孝 ; 福井 , 繁雄 ; 宮島, 昌克 ; Nishikawa, Hayato ; Takatani, Tomiya ; Tsuri, Takeyoshi ; Miyajima, Masakatsu
概要:
We develop vibration measuring equipment using high accurate inclimeter sensor that was not used in the past studies rel
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ated to MEMS sensor. Since high accurate inclimeter sensor has higher resolution and lower self-noises than general MEMS sensors, it is able to measure slighter vibration than the MEMS sensors. In order to examine performance of the equipment developed in this study, vibration characteristics of wooden house is investigated by measurement by using the equipment and servo type accelerometer. Natural frequencies of Fourier spectra of acceleration waves measured by this equipment are mostly corresponded to that measured by the servo type accelerometer. Moreover, natural frequencies of transfer function evaluated by servo type accelerometer are close to those of Fourier spectra.<br />本研究では，これまでのMEMSセンサに関する研究で用いられていない高精度傾斜センサによる振動測定装置を試作した．高精度傾斜センサは一般的なMEMSセンサと比べて分解能が高く，自己ノイズも小さいため，従来よりも小さな振動を測定することができる． 試作した振動測定装置の性能を調べるためにサーボ型加速度計とともに，木造建物の常時微動を測定し，加速度フーリエスペクトルから建物の振動特性を評価した．これらの装置の計測波形から求めたフーリエスペクトルの固有振動数は概ね一致した．また，サーボ型加速度計で評価した伝達関数の固有振動数はフーリエスペクトルの固有振動数と近い値となった．
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論文 |
論文
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Amiraslanzadeh, Reza ; Ikemoto, Toshikazu ; Miyajima, Masakatsu
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論文 |
論文
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池本 , 敏和 ; 森, 雅士 ; 宮島, 昌克 ; 橋本, 隆紀 ; 村田, 晶 ; Ikemoto, Toshikazu ; Mori, Masashi ; Miyajima, Masakatsu ; Hashimoto, Takanori ; Murata, Akira
概要:
金沢大学理工研究域地球社会基盤学系<br />日本では，地震による間知ブロック積み擁壁の被害が多発している．そこで，間知ブロック積み擁壁の振動特性と破壊機構に関する実験的研究を行った．実験データは加速度による応答倍率，変位，土圧を測定した．
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擁壁は振動によって，盛土の沈下が発生し擁壁中部から破壊することがわかった．<br />There are many earthquake damages of kenchi block masonry wall. So, we carried out experimental studies on the collapse mechanism of kenchi block masonry wall during earthquake. From these experimental data, i.e. acceleration response magnification, displacement and soil pressure were found to destroy the central wall vibrations caused by the subsidence of the embankment.
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その他 |
その他
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西川, 隼人 ; 宮島, 昌克 ; Nishikawa, Hayato ; Miyajima, Masakatsu
概要:
[研究概要]
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その他 |
その他
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Achour, Nebil ; Miyajima, Masakatsu ; 宮島, 昌克
概要:
[研究概要]
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その他 |
その他
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村田, 幸一 ; 宮島, 昌克 ; Murata, Kouichi ; Miyajima, Masakatsu
概要:
[研究概要]
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論文 |
論文
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Sun, Hong ; Miyajima, Masakatsu ; Qiao, Lei
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論文
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Murata, Akira ; Kitaura, Masaru ; Miyajima, Masakatsu
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論文 |
論文
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Achour, Nebil ; Miyajima, Masakatsu ; 宮島, 昌克
概要:
金沢大学理工研究域地球社会基盤学系<br />The Japanese Prefecture of Kumamoto experienced a series of strong earthquakes in April 2016 caus
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ing widespread damage and had a serious impact on local communities. The events caused over 3000 casualties and affected the continuity of healthcare services. Many hospitals had to be evacuated but the reasons for this evacuation are not clear. This research aims to investigate the impact of damage on the performance of the healthcare service through a survey of 118 healthcare facilities. The study connects earthquake metrics and the loss of healthcare service functionality and reveals the reasons for which facilities were totally or partially evacuated. Findings suggest that the reasons are mainly damage to buildings, critical systems, and medical equipment. It concludes by estimating that the stricken areas lost approximately 15% of their healthcare functionality. The study also concludes that the current building standards increased the performance of hospital buildings by approximately 10%; however, more attention is needed to protect architectural and critical systems. © The Author(s) 2020.
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