Safety pile foundation construction method

A construction method and pile foundation technology, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve problems such as the inability to expand the bottom and form piles, hidden dangers to the safety of construction personnel, and difficult control of pile quality, so as to ensure that piles Improve the quality of basic projects, reduce the hidden dangers of accidents, and shorten the construction period

Inactive Publication Date: 2007-08-29
童乐天
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Part of the soil body of the pile is dug out manually, the construction surface is too large, the workload of soil extraction is obviously increased, and the efficiency is low;
[0004] 2. Since there is no immersed tube as support for the bottom expansion equipment, the positioning is not accurate, the expansion angle of the base is too small, and the parameters in the bottom expansion process cannot be guaranteed, so that the quality of the pile is not easy to control, and it is difficult to meet the design requirements, resulting in the single pile The bearing capacity is greatly reduced;
[0005] 3. There are potential safety hazards for construction personnel, and construction personnel are prone to accidents if they do not pay attention;
[0006] 4. The scope of use is narrow, and it cannot be used for bottom expansion and pile formation in prefabricated piles and highly complex geological conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] A safe pile foundation construction method, which includes the following process steps: laminating an integral sunk pipe with a metal pile head through the soft soil to the hard soil layer at the design elevation; taking out the metal pile head and inserting it from the sunk pipe mouth Emulsified oil or ammonium antimony explosive, every 0.5m 3 The dosage is 1-5 kg. After detonating the explosive, seal the sinking nozzle. After the explosive is exploded, open the object that seals the sinking nozzle; manually remove the residue from the base; use a camera with a light source in the cavity of the base Internally check whether its quality meets the design requirements, and imaging records are archived; pour quantitative cast-in-situ concrete from the immersed pipe mouth to form a cast-in-situ concrete base, and put the pre-stressed precast hollow pile body into docking with the cast-in-situ concrete base through the inserts at the bottom Anchoring into a whole; after pouring ...

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PUM

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Abstract

The invention discloses a building pile foundation engineering construction process, especially relating to a safe pile foundation construction process, comprising: pressing sinking pipe with metal pile head to the pan at the designed level; taking out the metal pile head and blasting away soil body with detonator; taking out soil; pouring the concrete ready made on ground into foundation cavity to make concrete foundation; placing in prefabricated steel concrete pile body; grouting along the inside of the sinking pipe orifice and then drawing out the sinking pipe to make it. As compared with the existing techniques, it has features of simple and advanced process, high efficiency, effectively improving single pile bearing capacity and reaching design requirements, assuring pile foundation engineering quality, reducing building cost, raising material intensity utilization ratio, making the pile work in the most economic state and assuring engineering quality reaches the design requirements and improving construction safety.

Description

Technical field [0001] The invention relates to a construction technology of a building pile foundation project, in particular to a safe pile foundation construction method. Background technique [0002] The quality of building foundation works will directly affect the quality of buildings. Therefore, construction units not only pay attention to the construction quality of above-ground buildings, but also pay more attention to the quality of basic works. In order to improve the bearing capacity of single piles, expanded bottom piles and composite foundation piles have appeared one after another. Although this is significantly improved than the single pile bearing capacity of traditional foundation piles, the traditional construction method of pile foundation engineering uses a little bit of manual work. Dig the soil, take the soil to dig the pile body soil, and in order to prevent the collapse, dig down a certain depth of the sinking pipe. When the design elevation is reached, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/50E02D5/44E02D5/58
Inventor 童乐天
Owner 童乐天
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