Drilling-free forming pile based on radial pressurization and construction method and application thereof

Abstract

The invention discloses a drilling-free forming pile based on radial pressurization and a construction method and application thereof. The drilling-free forming pile comprises a pile body, the pile body is formed through that slurry is continuously filled in a hard screen pipe wrapped by one layer of elastic sealing film until the elastic sealing film is burst open and the filled slurry enters a peripheral soil layer, the filled slurry is cement mortar or concrete, the hard screen pipe is a pipe body is inserted in the soil layer in advance, and a plurality of slurry filling holes are arranged on the side wall of the hard screen pipe. The construction method includes: 1, hard screen pipe inserting; 2, slurry filling; and 3, pile body forming. The formed pile body is an anti-sliding pile for stabilizing side slopes or a reinforcing pile for reinforcing a foundation, and a plurality of formed pile bodies form an anti-seepage wall. The drilling-free forming pile is reasonable in structural design, convenient to construct, low in investment cost, good in using effect, high in practical value, wide in application range and capable of solving the problems of inconvenient construction, high investment cost, long construction period, poor using effect and the like of an existing pile foundation.

Description

technical field [0001] The invention belongs to the technical field of pile body construction, and in particular relates to a drilling-free formed pile based on radial pressure and its construction method and application. Background technique [0002] Nowadays, the pile foundations used in the field of civil engineering are mainly divided into prefabricated piles and cast-in-situ piles according to the construction method. Among them, prefabricated piles are made of various materials and various forms of piles (such as wooden piles, concrete square piles, prestressed concrete pipe piles, steel piles, etc.) Drive, press or vibrate into the soil. At present, the prefabricated piles that are widely used are mainly concrete prefabricated piles and steel piles. In actual construction, due to the heavy weight of the prefabricated pile itself, and the use of pile driving equipment to drive, press or vibrate into the soil, there are various degrees of inconvenience in construction...

AI Technical Summary

Problems solved by technology

Cast-in-situ piles have the advantages of no vibration, no soil extrusion, low noise during construction, and are suitable for use in urban areas with dense buildings. Defects and deficiencies such as relatively long construction period

In addition, the functions of the prefabricated piles and cast-in-situ piles used today are relatively single, and the pile body cannot provide radial pressure to the surrounding soil during and after the construction of the pile body.

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