Device for reducing pile sinking and soil squeezing effect of tubular pile

The invention relates to the technical field of building tubular pile construction equipment, and discloses a device for reducing the pile sinking and soil squeezing effect of a tubular pile. The device comprises an outer sleeve and the tubular pile, wherein an inner sleeve is movably sleeved with the outer sleeve, and the inner sleeve and the outer sleeve are coaxially installed. Through the arrangement of the outer sleeve, the inner sleeve and an annular piston head, a combined body small in size and thickness is inserted into a soft soil layer, on one hand, the extrusion amount of soft soil towards the periphery is reduced, on the other hand, pile sinking of the pipe pile is restrained, when the pipe pile is sunk, the annular piston head is pulled to rise through a pull rod, negative pressure is formed in the outer sleeve and the inner sleeve to be matched with a sunk pile of the tubular pile, a part of soft soil in the inner sleeve is squeezed outwards from the position between the outer sleeve and the in