Construction device and method for high-speed railway cutting low-suspension pile-slab structure

The invention relates to a construction device and method for a high-speed railway cutting low-suspension pile-slab structure, the device comprises a folding square steel pipe, a flexible inflation pipe and a formwork, the flexible inflation pipe is arranged in the folding square steel pipe in a sleeved mode, the height of the folding square steel pipe can be adjusted along with inflation and deflation of the flexible inflation pipe, and the folding square steel pipe supports the formwork in a jacking mode. The formwork is used for pouring of the bearing plate. According to the construction device of the high-speed railway cutting low-suspension pile-slab structure, the folding square steel pipe serves as a supporting framework, the flexible inflation pipe serves as a deformation generator of the folding square steel pipe, the formwork is stably supported, after the bearing plate is poured and formed, the flexible inflation pipe is deflated, and then the bearing plate is fixed; the formwork, the folding squar