Construction method for treating bridgehead soft foundation through gravel compaction piles

The invention discloses a construction method for treating a bridgehead soft foundation through gravel compaction piles. The construction method comprises the steps that after a designated site is cleaned and leveled, a gravel hardcore is laid; after the gravel hardcore is laid, pile position lofting is conducted; a vibration pile forming machine is adjusted to be in place, and then the vibration pile forming machine is debugged; the vibration pile forming machine is used for vibrating and sinking the pile pipe into a soil layer at the same time to reach a preset position; after the preset position of the pile pipe reaches, vibration of the vibration pile forming machine is stopped, and gravel is immediately loaded into the pile pipe till the pile pipe is full; after the pile pipe is filled with the gravels, the pile pipe is vibrated, and then the pile pipe is pulled; after the pile pipe is pulled out by half of the length, the pile pipe is filled with the gravel again through the charging hopper; continuousl