Liquefaction-resisting prefabricated concrete square drainage pile

Abstract

The invention belongs to the field of geotechnical engineering and relates to a prefabricated concrete square drainage pile for liquefaction resistance of foundation soil. According to the pile, vertical cavities are symmetrically formed in side surfaces of a prefabricated concrete square pile, porous aluminium alloy buckle plates are used for enclosing, and porous areas are covered with water filtering type geotextiles. Limitations that discrete material piles are insufficient in strength and rigid piles cannot drain water in the liquefied foundation soil reinforcing process are broken through. The pile comprises the prefabricated concrete square pile, the porous aluminium alloy buckle plates and the water filtering type geotextiles, all components can be produced in factories in batches, and the pile is simple in structure, high in pile body strength and good in drainage effect.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to a liquefaction-resistant drainage prefabricated concrete square pile. Background technique [0002] Under earthquake action, such as loose sand foundation, excess pore water pressure will be generated. If the excess pore water pressure cannot be dissipated in time, it will gradually accumulate. If the accumulated value of excess pore water pressure reaches the effective stress of the soil, the soil particles will be suspended. The foundation soil will change from solid to liquid, which will cause the foundation to lose its bearing capacity and cause the buildings (structures) to collapse. The phenomenon of foundation liquefaction has become one of the important reasons for site earthquake damage. [0003] Aiming at the mechanism of foundation liquefaction failure, a variety of liquefaction foundation treatment methods have been developed, among which, the compo...

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Problems solved by technology

Since the plastic drainage board is thin and the effective drainage channel is insufficient, it cannot guarantee the timely dissipation of excess pore water during an earthquake, and the open-hole steel wire hose should be rusted

[0009] In addition, the existing relevant drainage piles are either complex in structure and difficult to construct, or there are too few drainage channels so that the excess pore water pressure cannot be dissipated in time, causing liquefaction

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