Abstract
To prevent a piece of lining concrete from falling is important issue in the maintenance of railway tunnel. It may be effective to quantitatively monitor the strain of lining, deformation of tunnel section, crack width and others. However, this kind of monitoring method cannot estimate the progress of defectiveness, such as the progress of cracks, when the progress occurs at the deep part of lining. Therefore, this paper proposes the monitoring method by means of train-induced vibration, focusing on the change of characteristic of vibration on the tunnel lining and investigates its applicability by means of the measurement of train-induced vibration inside a railway tunnel and the model test with beam specimen.
