The invention discloses a novel steel
pipe pile foundation for preventing
pile circumferential soil from being liquefied under an action of
waves. The novel steel
pipe pile foundation is characterizedin that a vacuum cavity is formed in a steel
pipe pile below a
seabed mud surface, the vacuum cavity is connected to a
vacuum pump through a suction pipe, the
vacuum pump is provided with a water outlet, drainage holes are distributed in the wall of the steel pipe pile corresponding to the vacuum cavity, water is permeated to the pile circumferential soil and enters the vacuum cavity through thedrainage holes, and then under the action of the
vacuum pump, the pile circumferential soil is discharged to the vacuum pump through the suction pipe and then is discharged from the water outlet; andpreference is given, the device can further comprise a wave energy conversion section, a
permeation layer expansion section and the like. According to the novel steel pipe pile foundation, the
pore water pressure caused by the
waves is reduced on the premise that the property of the pile circumferential soil is not changed, so that the
liquefaction is prevented and the environment influence is small; the vacuum
suction force is manufactured by utilizing the wave energy, and extra
energy consumption is not needed; and the effect area of the pile soil is expanded by the
permeation layer expansion section, so that the
soil resistance is fully obtained so as to reduce the displacement response of the pile foundation under the action of the
waves.