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The cast-in-place pile in the foundation pit enclosure structure is the bored pile pile of the bridge pile foundation, and the row of piles formed by it is divided into occlusive row piles and non-occlusive row piles, wherein the occlusive row pile refers to the bite between the pile and the pile to form a whole, and has good water stopping, and the non-occlusive row pile is that there is a gap between the pile and the pile, which is mainly used for retaining soil, if the water stop is taken into account, auxiliary water-stopping measures are required, such as hanging steel mesh shotcrete, because the formation soil quality in the construction project is mostly poor soil quality and is affected by groundwater, Therefore, occlusive piles are often used in the row of piles, when the plain concrete pile and the reinforced concrete pile occlusive row pile are used, the plain concrete pile is constructed first, the reinforced concrete pile is constructed into a hole before the initial setting to ensure the efficiency of hole formation and the plain concrete and the reinforced concrete pile form a whole after the construction is completed, the reason why the plain concrete pile is constructed first is because the hole formation will be affected by the reinforcement cage when the reinforced concrete pile is constructed first and then the plain concrete pile is constructed, and the non-occlusive cast-in-place pile adopts the interval hole formation, However, it is necessary to carry out the construction of adjacent piles after the final setting of the pile foundation to prevent the quality of the adjacent piles from being affected, because the structure of the pile foundation is easy to be destroyed before the final setting
Plain concrete and reinforced concrete occlusive row piles
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Row piles and auxiliary water stop measures