Composite pile for ground foundation engineering

Abstract

The invention belongs to the field of foundation piles, and particularly relates to a composite pile for ground foundation engineering. The composite pile comprises upper pile pipes, lower pile mechanisms, conical heads and pile fixing mechanisms, wherein one end of each of the plurality of lower pile mechanisms which are sequentially connected and communicated is provided with the corresponding conical head allowing the lower pile mechanism to be inserted into a foundation conveniently, and the other end of each of the lower pile mechanisms is provided with the corresponding upper pile pipe which is larger in diameter and is communicated with the lower pile mechanism. According to the composite pile, the plurality of sections of lower pile mechanisms can be connected and inserted into the foundation according to the depth of a foundation pile to be inserted into the foundation, and after the upper pile pipes and all pile section pipes are inserted into the foundation, the pile fixing mechanisms connected together are axially knocked, so that an arc block in each lower pile mechanism protrudes out of the outer cylindrical surface of the corresponding pile section pipe, it is ensured that the foundation pile driven into the foundation cannot be loosened in the axial direction or the circumferential direction due to vibration and the like, and the foundation pile is more stable.

Description

technical field [0001] The invention belongs to the field of foundation piles, in particular to a composite pile for foundation engineering. Background technique [0002] The upper pile connecting the traditional foundation pile with the building bears a large force and requires greater stiffness and bending resistance. The stiffness and bending resistance of the lower pile of the traditional foundation pile are relatively small due to its penetration into the soil. [0003] The diameter of the stepped foundation pile in the prior art decreases as it penetrates into the soil, thereby greatly saving the production cost of the foundation pile while meeting the rigidity and bending resistance performance requirements of different parts of the foundation pile. However, traditional foundation piles still have the following problems: [0004] The surface of the foundation pile is smooth, and the axial friction between it and the soil is small, which easily leads to axial loosenin...

AI Technical Summary

Problems solved by technology

[0005] During the piling process, the foundation pile will form a lateral squeeze on the surrounding piles due to the soil squeezing effect, causing the surrounding piles to be squeezed and floated up, and the soil squeezing effect of the foundation pile will also squeeze the surrounding building foundations , thereby creating a safety hazard to the building

[0006] During the piling process, if it is found that there is a mistake in the piling and the traditional foundation pile needs to be pulled out from the soil, it is difficult to pull out the foundation pile

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