Construction method of biting pile

Abstract

The invention discloses a construction method of a biting pile. The method comprises the following steps that a pile position is determined, and a pile machine is erected; the pile machine is started,an inner hammer impacts and squeezes soil, an outer pipe protects wall, the inner hammer and the outer pipe alternately sinking to a designed elevation to form a pile hole; an outer pipe is fixed, the inner hammer is pulled out, a reinforcement cage is placed in the outer pipe, and concrete is poured to form a pile; and the pile machine is moved above an adjacent pile, and when the last pile position is initially condensed, the steps of the last pile position are repeated to form the biting pile. Compared with the prior art, according to the construction method of the biting pile, a non-soiltaking process is utilized to form the biting pile, so that the environmental pollution is avoided; meanwhile, the non-underwater concrete is poured, the pile forming quality is ensured, row piles areall B piles (reinforced concrete), and the bending resistance and the horizontal resistance are strong; and the process of reserving and cutting a biting groove is omitted, the inner hammer impacts into the crescent biting groove when the concrete is initially condensed, the outer pipe follows to protect the wall, then the concrete is poured, and the quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method of an occlusal pile. Background technique [0002] With the development of high-rise buildings, the supporting underground space engineering support is also varied, including SWM construction method, cast-in-place pile retaining soil + deep mixing pile composite structure, underground diaphragm wall plus internal support and external anchoring; in recent years, The occlusal pile is widely used in underground engineering because it has the functions of retaining soil and stopping water. [0003] At present, the ordinary occlusal pile adopts the full-rotation full-sleeve technology, grabs the soil by grabbing, and is divided into two types: non-underwater or underwater concrete pouring. The construction method adopts jump driving technology, such as Chinese patent 201710605624.X, a construction method of occlusal piles, which adopts the drilling...

AI Technical Summary

Problems solved by technology

[0003] At present, the ordinary occlusal pile adopts the full-rotation full-sleeve technology, grabs the soil by grabbing, and is divided into two types: non-underwater or underwater concrete pouring. The construction method adopts jump driving technology, such as Chinese patent 201710605624.X, a construction method of occlusal piles, which adopts the drilling and jump driving method, and plain piles and meat piles are combined into occlusal piles in sequence. Bury the pipeline, pull out the pipeline when it is initially set, and then cut the occlusal groove. This construction method has the following disadvantages: 1. Use drilling, grasping and other soil extraction techniques to form holes, and waste residues need to be transported outside, polluting the environment; 2. Using Underwater concrete pouring into piles is prone to common quality problems such as shrinkage and broken piles during construction; 3. The pile layout method of A piles and B piles is adopted, and A piles are plain piles without reinforcement, which reduces the bending moment of the pile body and reduces Soil retaining effect; 4. Pile A and pile B are connected by occlusal grooves, and the occlusal grooves are cut or reserved, and the filling or grouting process is adopted, so the water-stop effect is difficult to ensure

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