Hollow stiffness-core slurry-solidified discrete material pile and construction method thereof

Abstract

The invention discloses a hollow stiffness-core slurry-solidified discrete material pile and a construction method thereof. The periphery of a pile body is a slurry-solidified discrete material pile. The center of the pile body is a small-diameter prefabricated concrete pipe pile. Slurry filling holes are left on the pile wall of the prefabricated concrete pipe pile at intervals. Slurry enters discrete materials through holes in the middle of the concrete pipe pile and the slurry filling holes. Peripheral discrete materials are integrally cemented and solidified through cement slurry. At the same time, under the effect of slurry filling pressure, the slurry seeps into pile periphery soil bodies and the strength of the pile periphery soil is improved; the slurry fills the holes in the middle of the concrete pipe pile; and a prefabricated pipe pile can be formed by multiple sections which can be connected through bolts. The construction method comprises technical steps of: forming holes, placing the pipe pile, installing a sealing cover and a slurry filling pump, washing the holes by using clean wash, putting the discrete materials, filling the slurry, solidifying, forming the pile and the like. The hollow stiffness-core slurry-solidified discrete material pile and the construction method have the advantages that the construction processes are clear, the construction speed is fast, the pile forming effect is good, the bearing capacity is high, the manufacturing cost is low, the resources are fully utilized, the environment is protected and the energy is saved.

Description

technical field [0001] The invention belongs to the technical field of civil construction engineering, and in particular relates to a pile made of hollow core slurry and solid-dispersion material and a construction method thereof. Background technique [0002] In the construction of roads, ports, bridges and other projects, pile foundations are widely used. 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. 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 paying attention to for a long time. In addition, with the acceleration of urban construction in our country, a lot of construction waste such as abandoned bricks, stones, concrete blocks, and ...

AI Technical Summary

Problems solved by technology

However, the strength of the loose material around the pile type is low, and it is difficult to increase the large friction force. Under the action of a large external load, the pile body tends to separate the loose material from the high-bond strength pile core and reduce the bearing capacity.

At the same time, the high-bonding strength pile core set in the center is a solid pile body, and the concrete amount of the solid pile body is relatively large, and the rigidity of the solid pile body is very different from that of the bulk material, so it is difficult to exert the bearing capacity of the material

If you want to improve the strength of the pile body, you can use cement slurry to solidify the loose material around the pile, but the pile core of the core composite pile body is a solid pile, and there is no channel for grouting, so grouting cannot be used for reinforcement

The pile core is driven by the vibrating immersed tube method in the bulk material. The vibration itself has a great influence on the surrounding environment, and when the bulk material is a hard material such as gravel, the immersed tube is not easy to drive in, even if it can be driven in. Also requires a lot of energy, so energy is wasted

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