Pile mold and construction method of a cast-in-place X-shaped large-diameter hollow directional steel fiber concrete pile

Abstract

The invention discloses a pile mould of cast-in-place X-shaped large-diameter hollow orientated steel fiber reinforced concrete and a construction method. The pile mould is composed of an X-shaped pile mould outer tube and a round pile mould inner tube. A DC coil is wound in a spiral groove in the outer side of the round pile mould inner tube, and the positive pole and the negative pole of the coil are connected with a DC stabilized power supply through two linear grooves. The construction method comprises the following steps that a pile machine is on place, and a valve pile shoe is closed; the pile mould is submerged; steel fiber reinforced concrete is poured; the DC power supply is connected, and an axial magnetic field along a pile is generated in a cavity structure of the pile mould; vibration tube drawing is conducted; the pile mould is pulled out of the ground, and a complete pile body is formed. According to the pile mould of the cast-in-place X-shaped large-diameter hollow orientated steel fiber reinforced concrete and the construction method, the electromagnetic induction principle is ingeniously utilized to enable steel fibers to form an orientated distribution state that the steel fibers and the pile are distributed in parallel in the axial direction, so the horizontal bearing force of the pile is remarkably improved, the construction process is simple, the operability is high, and the application range of the construction method is greatly enlarged.

Description

technical field [0001] The invention belongs to the technical field of civil construction engineering, and in particular relates to a pile formwork of a cast-in-place X-shaped large-diameter hollow directional steel fiber concrete pile and a construction method thereof. Background technique [0002] The construction of roads, railways, bridges, etc. in soft soil areas requires reinforcement of soft soil foundations, and pile foundations and their composite foundation technology are the most widely used foundation treatment technologies. The vertical bearing capacity of pile foundation is composed of pile side friction resistance and pile tip resistance. The play of pile side friction resistance is particularly important in deep soft soil foundation. Among them, how to improve the utilization rate of unit material strength and improve the bearing capacity of pile foundation while saving the amount of building materials is one of the important topics that researchers have been...

AI Technical Summary

Problems solved by technology

The disadvantage of the existing preparation process is that the effective utilization efficiency of steel fibers in concrete is very low, a considerable part of the steel fibers cannot exert the expected shear resistance, and at the same time, it will also greatly increase the amount of raw materials used to prepare steel fiber concrete

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