Piling column construction method

Abstract

The invention provides a piling column construction method, and relates to the field of construction of pile columns. The piling column construction method comprises the steps of ground leveling, construction layout, embedment of a pile casing, selection of a drilling machine, drilling and installation of guide pipes, hole cleaning, lowering of a reinforcement cage and underwater concrete perfusion, wherein after the pile casing is embedded, a positioning rack is further arranged on the outer side of the pile casing; when reinforcement cage is lowered, a guide rack is arranged at an opening ofa hole, the guide rack comprises a guide frame and supporting bases, the guide frame is attached to the outer wall of the reinforcement cage after being adjusted, and the supporting bases are fixed to the ground; the supporting bases are connected with the outer wall of the guide frame through connecting supports, the supporting bases are used for improving the precision of the position where thereinforcement cage is lowered during construction of the piling column, and used for fixing the position of the reinforcement cage which is lowered first in the reinforcement cage overlapping process, and the construction efficiency and quality of the piling column are improved.

Description

technical field [0001] The invention relates to a pile-to-column construction method. Background technique [0002] The construction steps of pile-to-column include construction lofting, burying casing, drilling rig selection, opening, clearing, lowering the reinforcement cage, concrete pouring, etc. During the lowering operation of the reinforcement cage, use the crane to lift the reinforcement cage to be lowered and lower it vertically In the borehole, in order to ensure the construction quality of the pile-connected column, it is necessary to ensure that the axis of the reinforcement cage coincides with the axis of the borehole as much as possible. In the prior art, during the lowering of the reinforcement cage, workers are often arranged to check Manually adjust the position of the steel cage, but using this method on the one hand has hidden dangers to the safety of the workers, on the other hand, manually estimating and adjusting the lowering position of the steel cage ...

AI Technical Summary

Problems solved by technology

[0002] The construction steps of pile-to-column include construction lofting, burying casing, drilling rig selection, opening, clearing, lowering the reinforcement cage, concrete pouring, etc. During the lowering operation of the reinforcement cage, use the crane to lift the reinforcement cage to be lowered and lower it vertically In the borehole, in order to ensure the construction quality of the pile-connected column, it is necessary to ensure that the axis of the reinforcement cage coincides with the axis of the borehole as much as possible. In the prior art, during the lowering of the reinforcement cage, workers are often arranged to check Manually adjust the position of the steel cage, but using this method on the one hand has hidden dangers to the safety of the workers, on the other hand, manually estimating and adjusting the lowering position of the steel cage requires a high level of professionalism of the workers, and the existing errors are generally too large Large, if the reinforcement cage rubs against the wall of the borehole during lowering, the soil on the wall of the hole will fall into the bottom of the hole to form sediment, which needs to be cleaned up further, which will affect the construction efficiency and quality of the pile connection;

[0003] At the same time, when constructing piles with large heights, it is necessary to overlap the reinforcement cage while lowering the reinforcement cage. Part of it is exposed to the ground and its position is fixed, and then the other steel cage is hoisted and lowered until its lower end overlaps with the upper end of the first lowered steel cage, and the position of the lowered steel cage is kept fixed, and the workers weld the two steel cages, welding After the work is completed, continue to lower the steel cage. In the prior art, the temporary support is used to fix the first lowered steel cage. In this way, the operation is cumbersome and time-consuming. The temporary support is removed to prevent the lowering of the reinforcement cage, which seriously affects the construction efficiency of the pile connection

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