High-frequency hydraulic vibratory construction method for cement-soil core-inserted combined pile

Abstract

The invention provides a high-frequency hydraulic vibratory construction method for a cement-soil core-inserted combined pile. The high-frequency hydraulic vibratory construction method is a foundation reinforcing method, and includes forming a hole in a soil squeezing mode by a traditional immersed tube or drilling a hole by long spiral equipment, and filling stirred cement-soil mixtures into the drilled hole to for a pile; or directly forming a cement-soil pile by a stirring pile machine, immersing a rigid core pile into the uncured cement-soil pile by a high-frequency hydraulic vibratory hammer after cement-soil forms the pile, and forming the novel pile comprising the cement-soil pile and the core pile which jointly bear load. Compared with the prior art, the high-frequency hydraulic vibratory construction method has the advantages that the construction speed is high, the noise and the manufacturing cost are low, pollution is prevented, the quality of the formed novel pile is stable, and the formed novel pile is high in load bearing capacity. Besides, the construction efficiency is ten times of that of a common piling machine, the cost is saved by about 30% to 50% as compared with a precast pile, and is saved by about 40% to 50% as compared with a drilled grouting pile, and the high-frequency hydraulic vibratory construction method has substantial social and economical benefits.

Description

technical field [0001] The invention relates to a foundation reinforcement method in construction engineering, in particular to a foundation reinforcement method of a high-frequency liquid-vibration cement-soil core-inserted composite pile. Background technique [0002] At present, the types of piles commonly used in construction projects are mainly divided into two categories: prefabricated piles and cast-in-situ piles according to different construction methods. [0003] Bored cast-in-situ piles generally use mud retaining walls to form holes and pour concrete underwater. The construction method has the disadvantages of slow construction speed, environmental pollution and high cost. [0004] Immersed tube piles use hammering pile driving equipment or vibrating pile sinking equipment to sink the pile tip (or steel plate shoe) with reinforced concrete or steel pipe with valve-type pile shoe into the soil (the diameter of the steel pipe should be consistent with the design of...

AI Technical Summary

Problems solved by technology

Although the cement-soil reinforced composite pile with a pile core has improved bearing capacity compared with the simple cement-soil pile, this construction method needs to use the casing to squeeze the pile core hole first, and then take out the casing After that, the construction process such as implanting pile core steel core, pouring concrete, compacting, and maintaining pile core can be continued. The cumbersome construction technology makes the construction period longer and the construction efficiency lower, and the construction noise is large and the cost is high.

[0007] Therefore, it is necessary to further improve the foundation reinforcement method to avoid the above-mentioned defects of cumbersome construction technology, slow construction speed, high cost and high noise

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