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http://dx.doi.org/10.9711/KTAJ.2014.16.2.261

A numerical study on the effect of train-induced vibration in shield tunnel  

Kwak, C.W. (Seoul National University)
Park, I.J. (Hanseo University)
Park, J.B. (Seoul National University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.16, no.2, 2014 , pp. 261-267 More about this Journal
Abstract
Various types of external loads can be applied to the tunnel structure. In a shield tunnel, the vibration from the train may affect the behavior of the adjacent ground. In this study, the railway-induced vibration was estimated and applied to the shield tunnel through 3D numerical simulation. The effective stress analysis based on the finite difference method and Finn model was performed to investigate the potential of liquefaction below the tunnel. Furthermore, pore water pressure and displacement were monitored on a time domain; consequently, the liquefaction potential and dynamic response of the shield tunnel were analyzed. Consequently, it is confirmed that the generation of excess pore water pressure by train-induced vibrating load, however, the amount does not meaningfully affect the potential of liquefaction.
Keywords
Shield tunnel; 3D numerical simulation; Railway-induced vibration; Liquefaction potential;
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