| 摘要 |
A structure of a concrete ballast of a railway bridge is provided to prevent slip of the concrete ballast without shear keys by installing cam plates, and to disperse the load exerted on the concrete ballast by inserting cam plate pads into the cam plates installed on protection concrete layers, and to attenuate noise and vibration by installing elastomeric sheets on the protection concrete layers. A structure of a concrete ballast of a railway bridge includes protection concrete layers(10) comprising plural cam plates(11), and plural cam plate pads(11a) inserted to outer sides of the cam plates. Elastomeric sheets are installed on the upper parts of the protection concrete layers. Concrete ballast layers are placed on the upper parts of the protection concrete layers. Rails are installed on the upper parts of the concrete ballast layers. The cam plate pads are installed on front, back, left and right surfaces of the cam plates, and the cam plate pads have greater thickness in the order of front, rear and left and right cam plate pads.
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