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[III-19] Seismic design example of Railway Mountain Tunnel with invert corner curve(Part2 : Evaluation of the topography of the tunnel portal)

*Tatsuya Mizukami¹, Watanabe Keisuke¹, Ishii Hirotoshi¹ (1. Central Japan Railway Co.)

Keywords:

Mountain tunnel,Invert corner curve,Tunnel portal,Seismic design,Design standards for railway structures

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