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Column-hammer strong-tamper displacing base kit supporting construction method

A technology of dynamic compaction replacement and dynamic compaction replacement of piers, which is applied in infrastructure engineering, artificial islands, water conservancy projects, etc., can solve problems such as difficulty in meeting design requirements, engineering cost, inability to use external precipitation, and long support construction period. , to achieve the effect of improving the compactness, improving the slip stability coefficient, and advancing the support construction period.

Active Publication Date: 2008-06-25
JIANGXI JIYE SCI & TECH
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AI Technical Summary

Problems solved by technology

At the same time, the use of conventional foundation pit support schemes is often due to the high cost of support, long support construction period or site conditions (such as shallow groundwater depth, shallow foundation buildings around, and precipitation outside the pit cannot be used) Due to the restrictive effect of one or more factors, it is difficult to achieve the expected effect of meeting the design requirements and reducing the project cost

Method used

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  • Column-hammer strong-tamper displacing base kit supporting construction method
  • Column-hammer strong-tamper displacing base kit supporting construction method

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0027] The construction steps of the new column hammer dynamic compaction replacement foundation pit support method are as follows:

[0028] (1) Site leveling: according to the design elevation, excavate, fill and level the earthwork of the site;

[0029] (2) Laying out points: According to the design requirements, position and set out the wires, and arrange points within the force range of the base according to 1.5-2.0 times the diameter of the hammer bottom to determine the tamping point; between the bases, arrange points within the range of ground reinforcement and expansion tamping Controlled according to stratum conditions and structural design requirements, generally 3-4 times the diameter of the column bottom;

[0030] (3) The tamping points of the first construction pass are deeply replaced and compacted, and a n...

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Abstract

The invention discloses a novel column hammer-strongly temped replacement basic pit timbering method, firstly leveling a field, then setting out and arranging sites, then making the first and second site tamping constructions, i.e. making deep-layer and medium- and shallow- layer replacement compacting, after leveling original soil, setting out slopes and digging by layers according to the design requirements of the basic pit, artificially leveling the slope surface, constructing dead wall structure and finally putting the hammer away. And the invention is a novel basic pit timbering method, having the characters of: (1) largely reducing timbering cost; (2) high mechanization degree and shortening the timbering period; (3) achieving the timbering effect by compacting the groundsill soil of the basic pit; etc.

Description

technical field [0001] The invention relates to a method for reinforcing and treating a building foundation, in particular to a supporting method for replacing a foundation pit with a column hammer dynamic compaction. Background technique [0002] In the construction of foundation dynamic compaction treatment and the design and construction of building foundation pit and slope support, conventional foundation pit support schemes (pile row, cement-soil retaining wall, underground diaphragm wall, soil nail wall and inverted arch wall, etc.) ), generally the design and construction of lowering the groundwater level inside and outside the site are carried out first, and then the design and construction of foundation pit and slope support are carried out. When encountering the backfill sand or soft soil layer with a thick layer on the site, especially in the foundation pit or slope support of the built buildings with shallow buried foundations around the groundwater level (indivi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/046E02D17/00E02D29/02
Inventor 刘献刚邵忠心郑有明曹积才屈峰
Owner JIANGXI JIYE SCI & TECH
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