Small pile foundation construction method

A technology of pile foundation and construction method, which is applied in the direction of foundation structure engineering, sheet pile wall, drilling equipment and methods, etc., to achieve the effects of reduced material consumption and loss, small impact of terrain, and enhanced adaptability of ground stability

Pending Publication Date: 2022-05-20
沈军
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, once encountering more complex geological conditions, such as: the hardness of the rock formation reaches the first and second types of rock formations, or the blasting is not allowed to form holes, or the groundwater zone is rich in development, the above-mentioned conventional construction techniques cannot be solved or can only be solved at a huge cost.

Method used

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Embodiment 1

[0035] A kind of small pile foundation construction method of the present invention comprises the steps:

[0036] Rock drill positioning: Use GPS to locate the center point of the pile foundation and mark it. After the positioning plate of the rock drill is aligned with the mark, start the hydraulic arm, press and fix the positioning plate, and complete the alignment.

[0037] Start footage: Turn on and start the air compressor, start the main force, start the hydraulic system, and the drill bit starts to drill the footage.

[0038] Hole cleaning during the process: The dross and dust generated during the rock drilling process are collected by the hydraulic dust suction device to prevent pollution. At the same time, the main drill pipe is lifted up and down reciprocally to clear the hole.

[0039] Reach the design hole depth: When the design hole depth is expected to be reached, use the measuring rope to re-measure the depth. Generally, the drilling depth is about 10 cm long...

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PUM

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Abstract

The invention belongs to the technical field of pile foundation construction, and particularly relates to a small pile foundation construction method, a small pile foundation comprises a flange plate located on the upper portion and a plurality of small-diameter pile foundations located on the lower portion, and the small pile foundation construction method comprises the following steps that firstly, a rock drill is located; step 2, starting footage; 3, hole cleaning is conducted in the process; 5, bottom cleaning and water pumping; sixthly, the hole depth is measured again; seventhly, a reinforcement cage is put down; eighthly, concrete is poured; the defects in the prior art are overcome, a large-diameter pile foundation is broken up into parts and dispersed into a plurality of small pile foundations with the diameter within 0.5 m, and a novel rock drilling technology is adopted for pile forming to form a pile group foundation.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a small pile foundation construction method. Background technique [0002] At present, the diameter of pile foundation construction generally adopts large-diameter pile foundations of more than 3 meters, and the diameter of pile foundations in some water projects can reach 20 meters. The corresponding construction technology adopts rotary drilling, impact drilling, and blasting hole-forming methods. However, once encountering more complex geological conditions, such as: the hardness of the rock formation reaches the first and second types of rock formations, or the blasting is not allowed to form holes, or the groundwater zone is rich in development, the above-mentioned conventional construction techniques cannot be solved or can only be solved at a huge cost. Contents of the invention [0003] The purpose of the present invention is to provide a small pile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/16E02D5/34E21B7/00E21B21/00E21B47/04
CPCE02D27/16E02D5/34E21B7/00E21B21/00E21B47/04
Inventor 沈军李伟杨金发
Owner 沈军
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