Deep-layer dense multi-branch pile and application thereof

Abstract

The invention relates to a deep-layer dense multi-branch pile and an application thereof. The deep-layer dense multi-branch pile comprises a columnar main body and sheet-shaped branch bodies, wherein the sheet-shaped branch bodies are arranged on the periphery of the columnar main body; a pile body is provided with a segmented section or a non-segmented section in a length direction; an upper part pile body of the pile body of the segmented section is a reducing regulating and controlling bearing capacity section; and a lower part pile body is a multi-branch section.

Description

technical field [0001] The invention belongs to the technical field of construction, and in particular relates to a deep dense multi-branch pile and its application. Background technique [0002] During the construction of railways, highways and other construction projects, foundation treatment is often required, and the choice of pile type and construction method directly determine the bearing capacity and cost of the pile body. The pile bearing the vertical downward load transmits the superstructure load to the deep soil (rock) layer of the foundation through the friction resistance of the side surface of the pile body and the resistance of the pile end. Therefore, the vertical bearing capacity of the pile body is closely related to the geometric dimensions of the pile body, and in engineering projects, most of the piles mainly bear vertical loads. [0003] It can be known from engineering examples and design calculations that the larger the ratio of the lateral surface a...

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Problems solved by technology

[0008] 2. The length and size of the prefabricated toothed piles are relatively fixed. Although suitable sizes can be prefabricated in sections according to the needs of the construction site, the construction of this type of piles requires pile connection, which increases the construction process and reduces the reliability of the pile. In actual construction, due to the difference in the soil quality of the foundation, it is difficult to achieve the same length of all the piles on the same construction site, which will cause some piles to be cut off

[0009] 3. The prefabricated toothed piles are prefabricated in the factory, and they need to be transported long-distance when they arrive at the construction site. When the piles are implanted in the foundation, they need to be clamped by clamps or hammered to plant them. Therefore, the piles must have sufficient strength to To ensure that there will be no breakage during transportation and construction, the choice of pile material needs to ensure the strength of the pile body, and the types of available materials are greatly limited

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