Construction method of concrete filling piles

Abstract

The invention aims at providing a construction method of concrete filling piles for recovering sleeves, and the method is used for recycling sleeves of a die for pouring the concrete when the concrete is poured underwater, and greatly saving the construction cost. The construction method of the concrete filling piles comprises the following steps: a) embedding two nested and homocentric inner and outer sleeves in aground base; forming a filling material for concrete pouring molds between the inner and outer sleeves; fetching earth in the inner sleeve and forming pile holes; b) pouring the concrete in the inner sleeve; c) pulling out the inner sleeve before the poured concrete is initially congealed, and forming the molds of the poured concrete by the filling material; and d) pulling out the outer sleeve after the poured concrete is initially congealed.

Description

technical field [0001] The invention relates to a construction technology of concrete piles. Background technique [0002] At present, the traditional construction technology of reinforced concrete pouring piles in water adopts the casing construction method. After the casing is set in the foundation, the soil in the casing is taken out, the steel cage is hoisted into the casing, and pouring Concrete, when pouring concrete, in order to prevent the loss of the poured concrete, the above-mentioned casing must form the mold of the poured concrete in water. Because of this method, the casing cannot be recycled, resulting in an increase in construction costs. In addition, if reinforced concrete piles are constructed in soft soil foundations, backfill foundations, crushed stone foundations, and sand liquefaction foundations, if casings are not used, holes will often collapse, hole walls will be unstable, quicksand, and grout will leak. And other problems, the pile quality is not ...

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional construction technology of reinforced concrete pouring piles in water adopts the casing construction method. After the casing is set in the foundation, the soil in the casing is taken out, the steel cage is hoisted into the casing, and pouring Concrete, when pouring concrete, in order to prevent the loss of the poured concrete, the above-mentioned casing must form the mold of the poured concrete in water. Because of this method, the casing cannot be recycled, resulting in an increase in construction costs

In addition, if reinforced concrete piles are constructed in soft soil foundations, backfill foundations, crushed stone foundations, and sand liquefaction foundations, if casings are not used, holes will often collapse, hole walls will be unstable, quicksand, and grout will leak. And other problems, the pile quality is not good

In addition, when the above-mentioned piles are constructed in the foundation of lava geology, either the casing for pouring concrete is left to increase the construction cost, or the casing is not installed, and the poured concrete is lost from the lava with many holes.

Even if the reinforced concrete cast-in-place pile is carried out by using the casing method in the foundation with poor geological conditions mentioned above, or the casing is not drawn out during the concrete pouring process to ensure the quality of the pile, but the cost will increase because the casing is not recycled; Either the casing is drawn out during the pouring of concrete, but the quality of the pile cannot be guaranteed, and it only has the advantage of reducing the cost by recycling the casing. In short, the quality of the pile and the construction cost become a pair of contradictions, and it is impossible to ensure

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