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Discrete material core expansion concrete pile and construction method thereof

A technology of expansive concrete and bulk material piles, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of high construction cost, low bearing capacity and stiffness, poor integrity of pile foundation, etc., and achieve good pile-forming effect , Reduce construction cost, fast construction effect

Active Publication Date: 2017-08-04
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-carbon and green bulk material core expansive concrete pile that can use construction waste and has a good pile-forming effect and its construction method, so as to solve the problem of poor integrity of the pile foundation, low bearing capacity and low stiffness in the prior art and high construction costs

Method used

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  • Discrete material core expansion concrete pile and construction method thereof
  • Discrete material core expansion concrete pile and construction method thereof
  • Discrete material core expansion concrete pile and construction method thereof

Examples

Experimental program
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Embodiment 1

[0033] This embodiment discloses a construction method of bulk material core expansion concrete pile, see Figure 4 , including the following steps:

[0034] 1) Hole forming: According to geological conditions, use a drilling rig to drill pile holes in the soil layer to the designed depth. Wherein, the pile hole is protected by mud.

[0035] 2) Press down the steel pipe pile mold: inject mud into the pile hole to clear the hole. Lift the steel pipe pile form 4, align the pile position, and adjust the verticality of the steel pipe pile form 4. Then apply pressure to press the steel pipe pile form 4 into the soil layer to the design elevation. see image 3 , the steel pipe pile form 4 is a hollow cylinder whose upper and lower ends are open. The lower end opening of the steel pipe pile form 4 has a sharp cutting knife. The depth at which the cutting knife is inserted into the bottom of the hole is greater than or equal to 0.5 meters.

[0036] 3) Pouring expanded concrete ...

Embodiment 2

[0042] An expanded concrete pile with a bulk material core made by the method described in Example 1, comprising a concrete semi-hollow pile 2 and a bulk material core 1 implanted in the soil layer.

[0043] see figure 1 , the concrete semi-hollow pile 2 includes a solid cylindrical pile 201 and a hollow pipe pile 202 . The hollow pipe pile 202 is disposed at the bottom of the solid cylindrical pile 201 . The solid cylindrical pile 201 and the hollow pipe pile 202 are integrated. see figure 2 , the concrete semi-hollow pile 2 has the main reinforcement 301 of the pile body and the spiral stirrup 302 of the pile body. The main reinforcement 301 of the pile body and the spiral stirrup 302 of the pile body together constitute the reinforcement cage 3 . The reinforcement cage 3 is formed by splicing multiple sections of reinforcement cages. Each section of reinforcement cage is fixed by welding or riveting.

[0044] The inner cavity of the hollow pipe pile 202 is filled wit...

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Abstract

The invention provides a discrete material core expansion concrete pile and a construction method thereof. The discrete material core expansion concrete pile comprises a concrete semi-hollow pile and a discrete material pile core. An inner cavity of the concrete semi-hollow pile is filled with the discrete material pile core. The construction method of the discrete material core expansion concrete pile comprises the steps of hole forming, steel pipe pile die downward pressing, pile body periphery concrete pouring, pile body center discrete material throwing, vibration pile die pulling, pulp supplementing and pile forming and the like. The discrete material of the center of a pile body of the discrete material core expansion concrete pile is good in integrity and high in strength. The pile body is high in overall bearing force and large in rigidity. The construction cost is low, and low carbon and environment friendliness are achieved. The discrete material core expansion concrete pile and the construction method thereof can be widely applied to the foundation project.

Description

technical field [0001] The invention relates to the technical field of civil construction engineering, in particular to an expansive concrete pile with a bulk material core and a construction method thereof. Background technique [0002] Pile foundations are widely used in civil construction, road, port and bridge projects. At present, bulk material piles such as solid concrete pouring piles and gravel piles are common types of pile foundations in engineering. The ultimate bearing capacity of the pile foundation depends on the minimum value of the limit value of frictional resistance provided by the soil around the pile and the limit value of the bearing capacity of its own structure. When the pile body reaches the ultimate bearing capacity, the bearing capacity of the solid concrete pile-concrete pile body structure is much greater than the frictional resistance provided by the soil around the pile, and the utilization rate of unit material is low; due to the small lateral...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D15/04
CPCE02D5/385E02D15/04
Inventor 周航范玉明刘汉龙查亚辉丁选明李雪苑袁井荣
Owner CHONGQING UNIV
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