検査技術・診断(11)

[VI-581] Consideration on vibration characteristics of tunnel lining concrete

〇Tetsuya Taniguchi¹, Takayuki Murakami², Yujing Jiang³, Shigeyuki Hatano¹ (1.West Nippon Expressway Engineering Kyushu Co.,Ltd, 2.West Nippon Expressway Co.,Ltd, 3.Nagasaki University Graduate School of Engineering)

Keywords:Tunnel lining concrete, Crack distribution, Surrounding mountain conditions, Microtremor measurement, Fourier spectrum

The soundness diagnosis of the periodic inspection of the tunnel is judged by the distribution of cracks in the lining.
However, the rigidity of the lining is also affected by the structure and quality of the lining and the surrounding ground conditions.In this paper, we focused on the vibration characteristics of lining as a method to visualize the stiffness, and performed a multiple regression analysis with the lining and surrounding ground conditions.
As a result, it was clarified that the vibration characteristics could be explained by the lining and surrounding ground conditions.