Static pressure pile construction method for pressure regulation and unloading of building in narrow and small space

Abstract

The invention discloses a static pressure pile construction method for pressure regulation and unloading of a building in a narrow and small space. The static pressure pile construction method comprises the steps that a protection plate assembly and a pile column unit are fixed to the surface of a supported object; a jack is placed between the protection plate assembly and the pile column unit, the pile column unit is statically pressed into the ground by jacking the jack, a pile column unit is continuously added after the pile column unit is settled stably, after the old pile column unit andthe new pile column unit are welded and fixed, the jack is reinstalled, the jack is jacked, jacking of the jack is stopped when a pressure value of the jack reaches a set value, and construction of apile column is completed. The construction machine has the characteristics of being light, flexible, easy to operate, convenient to construct, small in working face, low in energy consumption, free ofpollution, free of damage to existing facilities of an upper structure during construction and the like. In the static pressure pile sinking process of an H-shaped steel pile, a high-pressure electric oil pump provided with an one-way overflow valve is adopted to control the jack to apply the pressure to the H-shaped steel pile, control can be strictly conducted according to the designed pile pressing force, and it is guaranteed that pile pressing is conducted stably.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a static pressure pile construction method for regulating and unloading buildings in a narrow space. Background technique [0002] At present, due to various reasons, there are more or less problems such as insufficient bearing capacity of building foundations (columns) in newly built, rebuilt or existing buildings, which seriously affect the normal use of buildings. In order to ensure that the building is less affected by construction during the process of reinforcement and reconstruction, and can ensure the use function of the building, the static pressure pile construction technology just solves the above problems. For foundation (column) reinforcement that can be constructed with a very small net height and needs to ensure the progress of the project, the traditional static pressure pile sinking method cannot solve the problem. Therefore, there is an urgent need on the m...

AI Technical Summary

Problems solved by technology

For foundation (column) reinforcement that can be constructed with a very small net height and needs to ensure the progress of the project, the traditional static pressure pile sinking method cannot solve the problem

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