A Numerical Analysis of Ground Vibration Induced by Typical Rail Corrugation of Underground Subway

Figure 17

First four orders natural vibration frequency related to track slab in vertical vibration: (a) the 1^st order vibration shape; (b) the 2^nd order vibration shape; (c) the 3^rd order vibration shape; (d) the 4^th order vibration shape.

(a)

(b)

(c)

(d)