A device and method for improving pile bearing capacity and stability

Abstract

A device for improving the bearing capacity and stability of a pile comprises multiple stretchable branch piles arranged on the pile wall of a main pile column, and the main pile column and the stretchable branch piles are connected into a whole. According to each stretchable branch pile, a branch pile body communicates with an air inlet, a telescopic joint communicates with the branch pile body, N telescopic joint bodies are movably connected to form the telescopic joint, the telescopic joint bodies communicate with one another, and N is larger than or equal to 1. An air feed device is matched with the air inlet of each stretchable branch pile. By the adoption of the device and method for improving the bearing capacity and stability of the pile, the bearing capacity and stability of the pile can be fully and effectively improved, the construction difficulty and the construction cost are low, the construction process is relatively convenient and rapid, and therefore the defects of the prior art can be overcome.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a device and method for improving the bearing capacity and stability of piles. Background technique [0002] Ordinary piles commonly used in engineering, such as concrete piles and steel piles, have low bearing capacity and poor stability, which wastes construction materials, manpower and investment, especially for complex soft bases, and their mechanical properties cannot be fully exerted due to structural defects of the pile. , resulting in the overall or uneven subsidence or instability of the construction project, which brings difficulties to design and construction technically. Engineers have been looking for better pile structure solutions. Although the anchor cable pile changes the stress state of ordinary piles, reduces the bending moment and shear force of the pile body, thereby reducing the cross-section and buried depth of the pile, and saving materials, but its constr...

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Problems solved by technology

[0002] Ordinary piles commonly used in engineering, such as concrete piles and steel piles, have low bearing capacity and poor stability, which wastes construction materials, manpower and investment, especially for complex soft bases, and their mechanical properties cannot be fully exerted due to structural defects of the pile. , resulting in the overall or uneven subsidence or instability of the construction project, which brings difficulties to the design and construction technically. Engineers have been looking for better pile structure solutions

Although the anchor cable pile changes the stress state of ordinary piles, reduces the bending moment and shear force of the pile body, thereby reducing the cross-section and buried depth of the pile, and saving materials, but its construction procedures are complicated and difficult, and it has great influence on the geological structure. The requirements are high; due to the limitation of branch construction equipment, the length of the branch itself and the angle of connection with the pile body are limited, so the effect of improving the bearing capacity and stability of the pile body is limited and its construction procedures are still complicated

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