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A Method of Using Pressure Grouting to Form Held Pile to Strengthen Deep Soft Soil Foundation

A soft soil foundation and grouting technology, applied in soil protection, sheet pile walls, foundation structure engineering, etc., can solve problems such as difficult to achieve foundation reinforcement, insufficient pile rigidity, and insufficient single pile slenderness ratio, etc., to achieve The effect of foundation reinforcement is good, the rigidity of the pile body is large, and the effect of meeting the requirements of the slenderness ratio of the pile body

Active Publication Date: 2020-06-23
山西晋建加固特种建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, and utilize the grouting principle of pressure grouting to provide a method for reinforcing deep soft soil foundations with pressure grouting to form hemming piles, so as to solve the problem of common foundation reinforcement methods when dealing with deep soft soil foundations. , the slenderness ratio of the single pile is not enough, the rigidity of the pile body is not enough, and it is difficult to achieve the technical problem of foundation reinforcement

Method used

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  • A Method of Using Pressure Grouting to Form Held Pile to Strengthen Deep Soft Soil Foundation

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Embodiment 1

[0031] Embodiment 1 (as figure 1 , 3 , 4 shown)

[0032] A method for reinforcing deep and thick soft soil foundations by using pressure grouting to form embracing piles, the construction steps are as follows:

[0033] (1) Investigate the foundation of the building:

[0034] Find out the reasons for the insufficient bearing capacity of the foundation of the building, query the construction data, and determine the structure, foundation type and foundation depth of the building;

[0035] (2) Determine the foundation reinforcement plan:

[0036] Firstly, conduct drilling investigation on the foundation, find out the depth of the hard layer of the foundation soil, the weakness of the foundation and the water content in the foundation soil, and determine the increased bearing capacity required for foundation reinforcement according to the load of the building and the existing foundation bearing capacity value , so as to determine the required drilling depth, drilling spacing, a...

Embodiment 2

[0052] Embodiment 2 (as figure 1 , 3 , 4 shown)

[0053] A kind of adopting pressure grouting to form the method for consolidating the deep soft ground of pile pile reinforcement, construction steps (1) to (3) are the same as embodiment 1;

[0054] In the step (3) of the ground reinforcement construction process (1) setting out, the equidistant three holes and the three equidistant holes between the two rows, the equidistant distance is 2000mm.

Embodiment 3

[0055] Embodiment 3 (as figure 2 , 3 , 5)

[0056] A method for reinforcing deep and thick soft soil foundations by using pressure grouting to form embracing piles, the construction steps are as follows:

[0057] (1) Investigate the foundation of the building:

[0058] Find out the reasons for the insufficient bearing capacity of the foundation of the building, query the construction data, and determine the structure, foundation type and foundation depth of the building;

[0059] (2) Determine the foundation reinforcement plan:

[0060] Firstly, conduct drilling investigation on the foundation, find out the depth of the hard layer of the foundation soil, the weakness of the foundation and the water content in the foundation soil, and determine the increased bearing capacity required for foundation reinforcement according to the load of the building and the existing foundation bearing capacity value , so as to determine the required drilling depth, drilling spacing, grouti...

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Abstract

The invention discloses a method for reinforcing a deep soft soil foundation through folded piles formed by pressure grouting, and relates to a building foundation reinforcing method. The technical problems that when the deep soft soil foundation is treated through a general foundation reinforcing method, the slenderness ratio of each single pile is not enough, the rigidity of each pile is insufficient, and the foundation reinforcing effect is difficult to achieve are solved. Multi-tube grouting, floral tube grouting and tube withdrawing grouting construction technologies are combined, the pressure grouting grout leaking principle is utilized, grouting adopts the corresponding large folded pile formed by each of three equidistant holes or three equidistant holes between two rows, and the corresponding large folded pile formed by each of four equidistant holes or four equidistant holes between two rows, that is, similarly grouting is conducted through the folded piles which are formed by all the single piles which are folded, the large pile diameter can be formed, the rigidity of the piles is improved, meanwhile the pile slenderness ratio requirement of the deep soft soil foundationis met, and the good effect of foundation reinforcing is achieved; and the method is used for reinforcing the deep soft soil foundation, and has the advantages that the rigidity of the piles is large, the pile slenderness ratio requirement of the soft soil foundation can be met, the foundation reinforcing effect is good, and the construction efficiency is high.

Description

technical field [0001] The invention belongs to a building foundation strengthening method, and in particular relates to a method for strengthening deep soft soil foundations by adopting pressure grouting to form hemming piles. Background technique [0002] my country has a vast territory, with different natural geographical environments and soil properties, and the foundation conditions are relatively regional. With the development of economic construction, it is not only necessary to choose a site with good geological conditions for construction in advance, but also sometimes has to be built in a place with poor geological conditions. With the development of social economy, urban land use is becoming more and more tense. In engineering construction, it is inevitable to encounter deep filling soil foundation, the degree of compaction of deep backfill soil, and soil collapsibility are complex and difficult to deal with. When the building is weak or eroded by water, the bea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/00E02D5/36
CPCE02D3/00E02D5/36
Inventor 陈忍清王大军陈岩
Owner 山西晋建加固特种建筑工程有限公司
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