Dynamic Response Analysis of Underground Rock Tunnel under Earthquake Load

Abstract:

Recently, response problems of extant structures under dynamic loads have been hot spots with the increase of earthquake disasters. Dynamic response analyses of underground rock tunnel have been made using the dynamic mode of 3D finite difference software FLAC3D, considering the impacts of different lateral pressure coefficients on the rock tunnel under the same earthquake load. Some conclusions are drawn: the vertical displacement of the bottom of rock tunnel arch is the maximum under the same earthquake load; the maximum vertical displacement at the tunnel top decreases with the increase of lateral pressure coefficient; the maximum vertical velocity at the tunnel shoulder increases with the lateral pressure coefficient; the maximum vertical acceleration at the tunnel bottom first increases and then decreases with the lateral pressure coefficient.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 2089-2092
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.2089
• Online since: January 2012
• Authors: Pei Sen Zhang, Wei Yan
• Keywords: Dynamic Response, Earthquake Load, Lateral Pressure Coefficient, Rock Tunnel, Simulation Analysis

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