Self-adaptive decompression drainage pipe pile and its preparation technology

Abstract

The invention discloses a self-adaptive pressure-reducing drainage pipe pile and a preparation process thereof. The self-adaptive pressure-reducing drainage pipe pile comprises a pipe pile body and a pile cap, wherein at least one row of plug holes are formed in the pipe pile body and distributed along the axial direction of the pipe pile body; and water-soluble embolisms are arranged in the plugholes. The preparation process of the self-adaptive pressure-reducing drainage pipe pile comprises the following steps of: 1, reserving at the periphery of a template of a factory standardized production pipe pile along the axial direction of the pipe pile body to serve as run-through hollow holes of the plug holes; 2, manufacturing a plurality of circular tube-shaped dies in which steel wire meshes are welded, placing a processed steel reinforcement cage into a prepared template, placing the circular tube-shaped dies into the reserved run-through hollow holes of the template to prop against the inner template and welding and fixing the inner template with the peripheral reinforcing steel bars, pouring concrete, performing prestressed tension and centrifugal molding after sealing the dies, performing steam maintenance, removing the template of the factory standardized production pipe pile, and welding the pile cap; and 3, filling the circular tube-shaped dies on the side wall of the pipe pile by using a water-soluble material polyvinyl alcohol solid.

Description

technical field [0001] The process relates to a pipe pile preparation technology that considers filling water-soluble solid materials with reserved holes in the pile body for decompression and drainage. Background technique [0002] Prefabricated reinforced concrete pipe piles are widely used in pile foundation engineering. However, during the pile sinking construction process, since the volume of the pipe pile itself occupies the original space of the soil, the soil around the pile is arranged to the surroundings. When the soil around the pile is saturated soft soil, the volume of the soil will not shrink or the shrinkage will be very small after being squeezed. At this time, the soil squeezing effect is very significant, so it causes a great negative impact, mainly in the following aspects: [0003] (1) During the pile pressing process, the pore water pressure increases, which can cause soil damage, resulting in uplift of the soil around the pile and horizontal displaceme...

AI Technical Summary

Problems solved by technology

[0003] (1) During the pile pressing process, the pore water pressure increases, which can cause soil damage, resulting in uplift of the soil around the pile and horizontal displacement;

[0004] (2) When sinking a pile, because the soil around the pile is compacted and squeezed out, the soil will displace vertically and horizontally, which will cause the adjacent piles that have been pressed in to be squeezed out, causing the pile end to be "suspended", and will also Cause quality accidents such as pile position deviation or pile body warping and breaking;

[0005] (3) After sinking the pile, the pore water pressure of the soil around the pile dissipates slowly, and after the soil is consolidated, the pile side may be subjected to downward negative frictional resistance, thereby reducing the bearing capacity of the pile

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