Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第I部門

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Tue. Sep 3, 2019 2:55 PM - 4:25 PM I-2 (幸町北3号館 312講義室)

座長:宮森 保紀(北見工業大学)

[I-50] A consideration on natural vibration mode of tunnel with and without back cavity

*増田 啓太1、関屋 英彦1、丸山 收1、三木 千壽1 (1. 東京都市大学)

Keywords:MEMS acceleration sensor, Tunnel deformation behavior, FEM analysis, Monitoring

Deterioration such as cracks has been reported in shield tunnels used for a long time. Also, in recent years, it has been a problem that a cavity is generated at the back of the shield tunnel, but it is not clear what kind of influence the back cavity has on the structure of the regular tunnel. Therefore, in this report, we examined whether or not the natural vibration mode of the tunnel changes depending on the existence of the back cavity from the eigenvalue analysis.

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