Grouting scope-controllable bag type micro bearing pile

Abstract

The invention provides a grouting scope-controllable bag type micro bearing pile, and belongs to the technical field of structure repair. The bearing pile comprises a casing pipe, a reinforcing cage, a grouting pipe, a grout outlet, an exhaust pipe, bags and a free section, wherein the reinforcing cage, the grouting pipe, the grout outlet, the exhaust pipe, the bags and the free section are positioned in the casing pipe; the grouting pipe and the exhaust pipe are respectively positioned outside the opposite sides of the reinforcing cage; the grout outlet is positioned in the lower part of the grouting pipe; the bags are positioned at the middle part and the lower part of the bearing pile and wrap the reinforcing cage; the free section is positioned at the upper part of the bearing pile. According to the bearing pile, concrete grout liquid is injected to the bags, so that the grouting serosity is guaranteed to be filled and diffused within a determined range, the effective contact area of the pile body and a soil body is enlarged, and the bearing capacity of the pile is improved. The method adopted by the bearing pile has the advantages that the grouting quantity is controllable, the grouting scope is controllable, the serosity is effectively diffused, the grouting effect is favorable, and the grouting speed is easy to control.

Description

Technical field [0001] The invention relates to the technical fields of structural repair, foundation reinforcement and the like in the fields of civil engineering, traffic engineering, etc., in particular to a pocket-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 pace of infrastructure construction has been accelerating, and corresponding geotechnical engineering problems have continued to appear. Among them, the repair technology for a series of problems such as cracks, skewed, and increased settlement due to uneven settlement of the foundation has always been a problem. Commonly used treatment facilities include anchor rods and piles. Compared with conventional bored piles, miniature pressure-bearing piles have the characteristics of higher bearing capacity, small construction site, strong adaptability to soil layers, and flexible layo...

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

Images