Prefabricated floating slab ballast bed

The utility model belongs to railway ballast beds, and particularly relates to a prefabricated floating slab ballast bed. The prefabricated floating slab ballast bed comprises a floating slab and is characterized in that the floating slab is a prefabricated short slab with the length of 1.2-8m. Slab end vibration isolation devices are arranged below the end part of the slab body vertically arranged along the steel rail on the prefabricated short slab. At least two end vibration isolation devices are arranged at each end. The end vibration isolation devices are arranged between the prefabricated short slab and a foundation slab and are symmetrically arranged relative to a vertical middle section of the prefabricated short slab. The prefabricated short slabs are connected through a shearing hinge. According to the utility model, the prefabricated short slabs with the length of 1.2-8m are used for replacing the conventional floating slab with the length of 25m to realize prefabricated production and hoisting construction of the floating slabs, thereby improving the construction speed greatly, reducing the construction difficulty and saving the production cost, and the prefabricated floating slab ballast bed provided by the utility model is strong in practicality, safe and reliable, high in cost performance, and extremely wide in the market application prospect.