Self-drainage type impermeable concrete precast pile

Abstract

The invention discloses a self-drainage type impermeable concrete precast pile, and belongs to the technical field of concrete precast piles. The purpose of improving the strength of a pile body by extending into the concrete precast pile by pre-burying a pre-buried missing ball in the concrete precast pile based on the water guide characteristic of a water guide fiber rod can be achieved, meanwhile, seepage water in the concrete precast pile is concentrated and conveyed to the pre-buried missing ball position, the drainage action of a multi-point water conveying rod is triggered, water conveying connection with a surface one-way drainage bag is established firstly, and then the guided seepage water is synchronously conveyed while water on the one-way drainage bag is desorbed under the action of transformed magnetic force through the self-extrusion effect, therefore, seepage water in the concrete precast pile is drained to the outside, the initial state is recovered, water conveying connection is disconnected, outside water is prevented from entering the concrete precast pile from the pre-buried missing ball position, and the impermeability of the concrete precast pile is remarkably improved.

Description

Technical field[0001]The invention relates to the technical field of concrete prefabricated piles, and more specifically to a self-draining impermeable concrete prefabricated pile.Background technique[0002]Concrete piles are piles made of concrete (including ordinary reinforced concrete and prestressed concrete). The prefabricated cement-soil pile is referred to as precast pile, which is suitable for silt, mucky soil, cohesive soil, silt, sand and artificial filling. And other foundation treatment. The precast piles used as foundation concealment can be precast concrete piles with a side length of 150-300mm, prestressed concrete pipe piles with a diameter of 300mm, steel pipe piles with a cross-sectional size of 100-300mm, and section steel.[0003]Concrete is a porous body with different pore diameters (10-500μm). When there is a pressure difference (or concentration difference, temperature difference, or potential difference) in the surrounding medium, there will be medium migration...

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Problems solved by technology

[0004] In the prior art, the method of preparing expansive concrete is often used to improve the raw materials, which can compensate the shrinkage of the concrete poured in the cavity of the pipe pile, can play the role of crack resistance and waterproof, and improve the pore structure and pore gradation of the concrete. , to improve the impermeability of concrete, but only relying on the impermeability of precast concrete piles, the effect is generally unsatisfactory, and the quality of expansive concrete is difficult to control, and expansion cracking is prone to occur, which will instead lead to a decrease in concrete strength and impermeability. will also decrease

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