Construction method for artificial hole-digging grouting pile

Abstract

The invention relates to the technical field of building construction, in particular to a construction method for an artificial hole-digging grouting pile. The construction method comprises the following steps that firstly, hole digging is conducted at a designed and determined artificial hole-digging grouting pile positioning point in an artificial hole digging manner, and pouring of a reinforced concrete well ring is conducted; secondly, pile hole protection wall construction is conducted, and before a protection wall template is installed, the bottom of a pile hole is downwards excavated to form a groove, and a connecting assembly connecting an upper protection wall with a lower protection wall is placed in the groove; thirdly, pile end expansion head construction is conducted; fourthly, the protection wall template is dismounted, and a reinforcement cage is hung and placed down; and fifthly, grouting pile pouring is conducted, concrete is pumped to a material barrel port through a concrete pump and pumped to the hole bottom through a material barrel via communication, and the concrete is vibrated densely through a concrete vibration machine. According to the construction method, the strength of the protection walls can be greatly improved, the anti-pressure ability that the protection walls resist a soil layer is improved, the protection walls have enough strength and stability and adapt to construction of soft soil texture, and the safety of the construction environment is improved; and the construction error between the upper protection wall and the lower protection wall can be reduced, and the precision of the pile center position and perpendicularity can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a method for manually digging a cast-in-place pile. Background technique [0002] The artificial excavation pile is relative to the bored pile column, which is the operation method of artificially excavating the soil to form the hole. Manual hole-digging piles are the simplest and most reliable form of pile foundation in all pile foundation constructions, and are favored by engineering circles. However, the construction of manual excavated piles requires operators to carry out hole-forming operations underground for a long time. Due to the complex geology of many projects, it is an important auxiliary measure for the construction of manual excavated piles during the well wall protection. In the existing construction, the lower retaining wall is generally poured after the concrete has hardened after the pouring of the upper retaining wall is completed. Since the con...

AI Technical Summary

Problems solved by technology

However, the construction of manual digging piles requires operators to carry out hole-forming operations underground for a long time. Due to the complex geology of many projects, it is an important auxiliary measure for the construction of manual digging piles in the well wall protection

In the existing construction, the lower retaining wall is generally poured after the concrete has hardened after the pouring of the upper retaining wall is completed. Since the concrete of the upper retaining wall and the concrete of the lower retaining wall harden successively, the connection between the upper retaining wall and the lower retaining wall is relatively weak. Pile center deviation is prone to occur under pressure

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