3314 減圧トンネル超高速鉄道における地盤振動応答特性(SS8-1 接触幾何学と力学,SS8 境界領域研究,J-Rail 2006)

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This paper studies the quasi-static and dynamic responses of ground caused by a moveing load running in a tunnel with a very-high speed, in the context of the operation of low-pressure railway system. A numerical method is constructed based on the 2.5-dimentional analysis method. A quasi two-dimentional plane which is perpendicular to the tunnel axis is discretized by finite and boundary elements. Through numerical analyses, the influences of running speed and vibraton frequency of load on the response are investigated. It is found that, though the quasi-static response is increased with increasing speed, it cannot be serious. On the other hand, the dynamic component of moving load can cause rather large response. Particularly, it can be increased at a speed of 700km/h or more.
一般社団法人日本機械学会の論文
2006-12-13