Prefabricated screw spike pile

A screw and pile body technology, applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve the problems of low foundation pile bearing capacity, low pile body strength, low construction efficiency, etc., and achieve high single pile bearing capacity value. , The effect of reliable pile quality and fast pile formation

Inactive Publication Date: 2017-07-04
王景军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a prefabricated screw pile in order to solve the problems of low bearing capacity, low pile body strength and low construction efficiency of existing foundation piles

Method used

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  • Prefabricated screw spike pile
  • Prefabricated screw spike pile
  • Prefabricated screw spike pile

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0028] Specific embodiment 1: The prefabricated screw pile in this embodiment is composed of a single prefabricated screw pile base or connected by multiple prefabricated screw pile bases, and the concrete pile body 1 of the prefabricated screw pile base is a circular tube or a hollow cone body, the inner hole 1-1 of the pile body 1 is circular or polygonal, and the outer surface of the pile body 1 is provided with a continuous thread 2 or a continuous zigzag thread 3, along the axial direction of the pile body 1, there are at least A through hole 4 is provided with a pile tip 5 made of steel plates on the bottom end surface of the prefabricated screw pile.

[0029] The thread height of this embodiment is 10mm-50mm greater than the circular prefabricated concrete pipe (straight pile) at the rear end, and its function is to increase the diameter of the pile body top, so that the pile body can bear greater loads. The structural schematic diagram of the prefabricated screw pile d...

specific Embodiment approach 2

[0030] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the strength of the concrete pile body 1 is marked as C80-C150.

specific Embodiment approach 3

[0031] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the pile body 1 of the prefabricated screw pile base has a diameter of 150 mm to 800 mm and a length of 0.5 m to 40 m.

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Abstract

The invention discloses a prefabricated screw spike pile, belongs to the field of civil construction engineering and aims at solving the problem an existing foundation pile has lower bearing capacity, low pile body strength and low construction efficiency. The prefabricated screw spike pile disclosed by the invention is formed by a single prefabricated screw pile base body or a plurality of screw spike pile base bodies which are connected, wherein a pile body of the prefabricated screw spike pile base body is a concrete tube body or a hollow conical body, an inner hole of the pile body is in a round or polygon shape, a continuous thread or a continuous buttless thread is arranged on the outer surface of the pile body, at least one through hole is formed in a pipe wall in the axial direction of the pile body, and a pile toe is arranged on the bottom end face of the prefabricated screw spike pile. A prefabricated pile body of the prefabricated screw spike pile disclosed by the invention is formed by high-strength concrete, hole forming can be performed under rotary condition, the prefabricated screw spike pile can be embedded into a soil layer to achieve compression-resistance and tension-resistance effects; the through hole in the pipe wall can form nozzles at the front end of a drill bit in different directions, the purpose of cutting soil can be achieved through high-pressure spraying jet, and pile forming speed is improved.

Description

technical field [0001] The invention belongs to the field of civil construction engineering, and in particular relates to a prefabricated screw pile. Background technique [0002] At present, domestic soft soil foundation piles mainly include cast-in-place piles and prefabricated piles. However, with the progress of urbanization, the above two types of pile foundations are limited by construction technology, and there are some application deficiencies. For example, prefabricated piles have soft The side resistance of the pile in the soil foundation is not fully exerted, the strength of the pile body cannot be fully exerted under the vertical compressive load, the horizontal load resistance is insufficient, the deformation performance is not high enough, the brittle failure is easy, and the soil is seriously squeezed during construction. Cast-in-situ piles are prone to necking, ballast at the bottom of the pile, mud discharge and removed pile heads during construction will po...

Claims

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Application Information

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IPC IPC(8): E02D5/56E02D5/30
CPCE02D5/56E02D5/30
Inventor 王景军王语姝
Owner 王景军
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