CFG pile and construction method thereof

Abstract

The invention provides a CFG pile and a construction method thereof. A CFG pile immersed pipe is arranged in a soil layer. A cement mixing layer is poured in the CFG pile immersed pipe. Positioning mechanisms which are integrated with the cement mixing layer are arranged in the cement mixing layer at equal intervals. The positioning mechanisms are used for positioning the position of the cement mixing layer. Compared with the prior art, the positioning mechanisms are arranged in the cement mixing layer, slope fixing pillars are arranged on the positioning mechanisms so that the overall cross sectional area of the positioning mechanisms can be larger than the cross sectional area of the cement mixing layer, and the sinking speed of the formed CFG pile is reduced. In addition, the slope fixing pillars which are distributed in a normal triangular shape can be inserted into the soil layer so that the position of the formed CFG pile can be more stable. Due to small vibration rods, vibrationtreatment can be conducted on the connecting position of the CFG sinking pipe and the cement mixing layer, and cement can be more compactly charged into through holes formed in the positioning mechanisms. Large vibration rods can be used for conducting vibration treatment on the cement mixing layer, and the cement mixing layer can be mixed rapidly.

Description

technical field [0001] The invention relates to the technical field of building foundation piles, in particular to a CFG pile and a construction method thereof. Background technique [0002] The CFG pile is a cement fly ash gravel pile, which is a variable strength pile with a certain strength made of crushed stone, stone chips, sand, fly ash mixed with cement and water, and made with various pile forming machines. CFG pile is a kind of low-strength concrete pile, which can make full use of the joint action of the bearing capacity of the soil between the piles, and can transfer the load to the deep foundation, and has good technical performance and economic effect. In the design of composite foundation, it is a core technology of composite foundation to set a cushion layer composed of granular materials with a certain thickness between the foundation and the pile and the soil between the piles. Whether to set up a cushion layer under the foundation has a great influence on ...

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Problems solved by technology

[0003] However, when the existing CFG piles are used, due to the vertical setting, they are prone to subsidence after long-term use. In addition, during the formation of the CFG piles, the internal materials are not mixed uniformly, so that the formed CFG piles are not stable enough, and the use effect is not good. it is good

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