Cloth bag squeezing concrete branch pile and construction method

Abstract

The invention relates to a cloth bag squeezing concrete branch pile. The bottom of a branch pile body is connected with a prefabricated pile point, the pile body is composed of a concrete stiffness core, a reinforced body, a geotechnical cloth bag slurry pressing body, a geotechnical cloth bag, a branch squeezing cloth bag slurry pressing body, branch squeezing cloth bags and a cement soil pile from the inside to the outside. The branch squeezing cloth bags are arranged on a geotechnical cloth bag body at intervals. The geotechnical cloth bag slurry pressing body is formed by injecting slurry into the geotechnical cloth bag in a high-pressure mode, and the branch squeezing cloth bag slurry pressing body is formed by injecting slurry into branch squeezing cloth in a high-pressure mode. The reinforced body is composed of a vertical main rib and an annular hoop rib. A geotechnical cloth bag connecting body, a reinforced body vertical main rib connecting body and a limit groove of an immersed tube are sequentially arranged on the top face of the prefabricated pile point from the outside to the inside. By means of the pile, rigid and flexible compound pile effects are achieved, damage of a soil squeezing effect on concrete and mortar which are not initially set is reduced, and pile quality is guaranteed. In addition, common loading performance of flexible piles and rigid piles is improved by means of the branch pile.

Description

technical field [0001] The invention relates to an abutment pile, in particular to a bag-expanded concrete abutment pile formed by high-pressure grouting of a geotechnical cloth bag and having a flexible pile periphery. It belongs to the field of foundation treatment and is suitable for foundation treatment projects with high requirements on the bearing capacity of building foundations. Background technique [0002] my country has a vast territory, complex geological conditions, wide distribution and complex types of weak foundations, especially in coastal and river areas, and these areas are mostly economically developed and densely populated in my country. Weak foundations generally have high water content, high compressibility, low strength, small consolidation coefficient, and complex soil layer distribution. Necessary reinforcement must be carried out when building dense railways, highways, municipal and water conservancy projects on such foundations treatment, increas...

AI Technical Summary

Problems solved by technology

However, there will be different degrees of soil squeezing effect, and the quality of the pile is not ideal; the expansion and extrusion of the immersed tube will also cause damage to the side friction resistance, resulting in insufficient bearing capacity

[0005] To sum up, although the existing pile types and pile construction methods can achieve a relatively ideal foundation treatment effect under suitable engineering environmental conditions, there are still things that can be improved.

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