Lining concrete healthiness evaluation method based on vibration characteristics measurement

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630205
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Nagasaki University
• Principal Investigator: JIANG Yujing 長崎大学, 工学研究科, 教授 (50253498)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 維持管理 / トンネル覆工 / 非破壊的手法 / 健全度

Outline of Final Research Achievements

In the present study, the new healthiness evaluation method for lining concrete was ingeniously proposed based on the difference of the natural vibration characteristics. In particular, due to the presence of the rear cavity and cracks, using the features of Fourier spectral characteristics result in a change, healthiness of lining concrete structure was aging (the strength and rigidity), it can be evaluated in a non-destructive, high-precision. The usefulness of the proposed method was verified by application to the realization field.

Free Research Field

岩盤工学