The invention relates to a
pipe pile grouting expanded head
pile forming process special for a
prestressed concrete water jet cutter and a
pipe, and belongs to the field of
pipe pile construction. The large-head concrete block is integrally connected with the lower end of the tubular pile body and is in an
irregular shape, the tubular pile body sequentially comprises a
pile cap, a plurality of pipe joints and an inverted-cone-shaped pile head from top to bottom, the tubular pile body is provided with at least one high-pressure water or
cement paste channel in the axial direction of the tubular pile body, and the pile head is provided with a material water hole communicated with the high-pressure water or
cement paste channel. During construction, even if a special stratum is encountered, the hard stratum is impacted through the high-pressure
water jet cutter, and static pressure or hammering is matched, so that the problem that an existing pipe pile is difficult to descend is solved. When the designed elevation is reached, guniting is carried out through high-pressure water or a
cement paste channel in the pipe pile body, and a sphere-like expanded head is formed at the bottom of the pipe pile; the
bearing capacity of a single pile can be improved, settlement of the pile body is limited, local displacement of the pile body is eliminated, and the anti-floating effect of the pile body is achieved.