Construction technique of static pressure treatment for ground base and pile foundation

A construction technology and foundation technology, which can be used in infrastructure engineering, sheet pile walls, soil protection, etc., can solve problems such as limitations, and achieve the effect of improving friction.

Inactive Publication Date: 2007-02-21
毛心焰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of surrounding buildings, dynamic compaction is limited due to the large vibration caused by surrounding buildings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] 1. Use a 500-ton pile driver to press the vertical rod with the pressure head into the foundation soil. The diameter of the pressure head is 1 meter, the length of the vertical rod is 10 meters, and the depth is 8 meters, and then the vertical rod with the pressure head is pulled out , Fill the pressed holes with loose lime soil layer by layer, and then use the pressure head to compact the ground layer by layer until the ground becomes a foundation, and the characteristic value of the bearing capacity of the foundation reaches 250Kpa.

[0007] 2. Use a 200-ton pile driver to press the vertical rod with the pressure head into the foundation soil. The diameter of the pressure head is 0.6 meters, the length of the vertical rod is 5 meters, and the depth is 5 meters, and then the vertical rod with the pressure head is pulled out , Pour concrete into the pressed hole to solidify into a pile.

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Abstract

The present invention relates to a construction process capable of utilizing static pressure to treat ground base and pile foundation. It is characterized by that according to the design-required ground base treatment depth or pile length said construction process adopts the following steps: firstly, utilizing press-in pile driver with large tonnage to press the upright with pressure head into ground base earth so as to extrude the earth body around the pile hole and make said earth body be compacted and compact its lower earth layer, then drawing out said upright with pressure head, filling lime earth into the pile hole layer-by-layer, then using pressure head to make compaction layer-by-layer until the ground surface is made into ground base; or injecting grout material into the pile hole, solidifying and forming into pile.

Description

Technical field [0001] The invention relates to a processing method for building foundations, in particular to a processing method for clay foundations without vibration. Background technique [0002] There are many ways to treat building foundations according to different building requirements and foundation soil characteristics. Dynamic compaction is a method of ramming foundation treatment with a heavy hammer raised high. By improving soil compactness and reducing soil compressibility, the bearing capacity of the foundation can be greatly improved. Due to its low cost and high speed, it is called the most efficient and economical foundation treatment method. However, in the case of surrounding buildings, dynamic compaction is limited due to the relatively large vibrations caused by the surrounding buildings. And the non-vibration pile foundation construction method that generally adopts now usually forms pile holes by drilling, then pours into the slurry in the pile hole...

Claims

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Application Information

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IPC IPC(8): E02D3/08E02D7/20
Inventor 毛心焰程淑蒂
Owner 毛心焰
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