A pocket-type micro pressure-bearing pile with controllable grouting range

Abstract

The invention provides a pocket-type miniature pressure-bearing pile with a controllable grouting range, which belongs to the technical field of structure restoration. The pressure pile includes casing, steel cage, grouting pipe, grout outlet, vent pipe, bladder and free section, and the steel cage, grouting pipe, grout outlet, exhaust pipe, bladder and free section are located at Inside the casing, the grouting pipe and the exhaust pipe are respectively located outside the opposite sides of the reinforcement cage, the grout outlet is located at the lower part of the grouting pipe, the bladder is located at the middle and lower part of the pressure pile, and is wrapped outside the reinforcement cage, and the free section is located in the pressure pile upper part. The pressure-bearing pile injects concrete grout into the bag, thereby ensuring that the grouting grout is filled and diffused within a limited range, so as to increase the effective contact area between the pile body and the soil, and improve the bearing capacity of the pile. The method has the advantages of controllable grouting amount and grouting range, effective grouting, good grouting effect, easy control of grouting speed and the like.

Description

technical field [0001] The invention relates to technical fields such as structural repair and foundation reinforcement in the fields of civil engineering, traffic engineering, etc., and in particular refers to a bag-type miniature pressure-bearing pile with a controllable grouting range. Background technique [0002] In recent years, with the continuous development of my country's national economy, the speed of infrastructure construction has been accelerating, and corresponding geotechnical engineering problems have also emerged. Among them, the repair technology for a series of problems such as cracking, skewing, and increased settlement of buildings due to uneven settlement of the foundation has always been a difficult problem. Commonly used treatment facilities include anchor rods and piles. Compared with conventional bored piles, micro pressure-bearing piles have the characteristics of higher bearing capacity, small construction site, strong adaptability to soil layer...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a pocket-type micro pressure-bearing pile with a controllable grouting range, so as to overcome the difficulty in ensuring the effective diffusion of grout within a limited range and the amount of grouting when using conventional methods for grouting at pile ends. Defects that are difficult to control and the grouting effect is difficult to guarantee

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