Construction method of anchor rod static pressure pile

Abstract

The invention relates to a construction method of an anchor rod static pressure pile. The construction method specifically comprises the following steps that (1) a pile position is determined; (2) hole perforating is carried out; (3), a pile hole is checked and cleaned; (4) a pressing pile reaction frame is installed; (5) a pile is transported; (6) hoisting alignment and perpendicularity calibration are carried out, wherein the anchor rod pile frame is used for lifting the pile, and the perpendicularity of the pile is calibrated; (7) pile pressing and pile connecting are carried out, wherein the pile is pressed into positions with set depth by using a lifting jack in a sectionalized mode and taking anchor rods as a guide, starting from the second section of the pile, all sections of the pile are welded together before being pressed into the positions; and (8) pile pressing is finished, the pile is conveyed to the designed elevation, and after the pressing-in is completed, the pile holepile is cleaned, after electric welding is finished and the pile passes acceptance inspection, the pile is pressed to the elevation of a bottom plate of a basement after being cooled for 8 minutes, then the site is cleaned, and the frame is moved to and installed at another pile hole. According to the construction method, a building load is transferred to the deep stratum through the anchor rod pile, so that additional stress of a shallow layer soil body is reduced, then the compression deformation of the shallow layer soil body of a reinforced part is reduced or stopped, and therefore, settlement or floating of a building is stabilized.

Description

technical field [0001] The invention relates to the technical field of building construction, and relates to a pile foundation construction method, in particular to a construction method of an anchor static pressure pile, and is especially suitable for foundation reinforcement construction of existing buildings. Background technique [0002] With the in-depth development of domestic urbanization, more and more existing buildings will be rebuilt and expanded for various reasons, which also creates a need for reinforcement of the foundation. However, for basements in existing buildings, the construction site is narrow and the floor height is low; and some office or residential buildings may need to be rebuilt and expanded during use, and the construction noise control is strictly required at this time. In the existing technology, piles are generally used to reinforce the foundation of existing buildings, and construction is carried out with a static pile driver. During constru...

AI Technical Summary

Problems solved by technology

However, after the construction of local foundation reinforcement anchor static pressure piles is completed, the waterproofing of the lower waterproof membrane layer and the self-waterproof concrete layer of the bottom plate has failed, and only the top waterproof layer of the bottom plate is left to function. Water seepage often occurs in the location

The reason is that the waterproofing at the pile head nodes of the anchor static pressure pile was ignored during the construction. Although the structural foundation has been reinforced, there are problems with waterproofing, which has a negative impact on the use and function of the structure.

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