Method for manufacturing tubular pile by adopting pump concrete

The invention discloses a method for manufacturing a tubular pile by adopting pump concrete. The pump concrete comprises a cementing material, sand, broken stone, an admixture and water, wherein the total content of the cementing material is 320-500kg/m ; the ratio of the water to the cementing material is 0.26-0.40; the fineness modulus of the sand is 2.3-3.2; the sand ratio is 36-45%; the particle size of the broken stone is 5-25mm of continuous grading; a crushing value is less than or equal to 10%; and the crushing value of the broken stone in a needle flake shape is less than 10%. The manufacturing method disclosed by the invention comprises the following steps: A. after adding cage ribs which are needed by manufacturing a concrete tubular pile to a mould, buckling an upper mould and a lower mould and tightening a screw; B. preparing the pump concrete according to a proportion and conveying to an inner cavity of the mould; C. tensioning the cage ribs in the mould and applying prestress; and D. hanging th