Construction method of precast concrete pile body carrier pile

Abstract

The invention aims to provide a construction method of a precast concrete pile body carrier pile. According to the construction method, a precast concrete pile body is imbedded after a pile end carrier is manufactured by various methods, and the close combination of the precast pile body and the pile end carrier is guaranteed. The construction method comprises the following steps: 1) sinking a pile casing in various ways such as hammering or vibrating; 2) performing reinforcing treatment of a pile end by various methods such as filler ramming; 3) repeating the operation in step 3) to form the pile end carrier, and detecting the compactness according to a penetration degree or filler quantity control standard; 4) filling the pile casing with flowing concrete and then lifting out the pile casing; and 5) imbedding the precast pile body by one of the methods of hammering, static pressure and vibrating, and selecting a corresponding imbedding method according to the type of the precast pile body.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to pile foundation construction technology. Background technique [0002] Patent No. ZL98101041.5 patent literature discloses a construction technology of concrete piles, which is characterized in that an artificial bearing layer is formed by performing operations such as packing at the bottom of the pile, so that the upper load passes through the concrete pile body and The artificial bearing layer at the bottom of the pile is transferred to the better bearing layer, thereby improving the bearing capacity of the pile. However, the pile body of this type of pile is made of cast-in-place concrete. In silty soil or soil layer with high water content or saturated soil, it is easy to have shrinkage and broken piles at the junction of the pile body and the pile end. If the filling capacity is too large or the distance between the piles is too small, it will cause the adjacent piles to be...

AI Technical Summary

Problems solved by technology

However, the pile body of this type of pile is made of cast-in-place concrete. In silty soil or soil layer with high water content or saturated soil, it is easy to have shrinkage and broken piles at the junction of the pile body and the pile end. If the filling capacity is too large or the distance between the piles is too small, it will cause the adjacent piles to be squeezed in the process of filling and compacting, and the adjacent piles will be damaged. Quality problems such as diameter shrinkage and pile breakage in poured concrete pile body or pile end junction

At the same time, due to the singleness of the construction means and mechanical devices of the above method, the hole forming and pile forming methods in the pile body are relatively limited, which can no longer meet the changing needs of geological conditions and design requirements.

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