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Foam concrete expanded-base combined upper soil body light curing core-inserting pile treatment method

A technology of foam concrete and processing method, which is applied in the fields of soil protection, construction, and foundation structure engineering, etc. It can solve the problems of heavy weight, limited increase in the bearing capacity of rigid piles, and low strength of cement mixed soil, etc., and achieves light weight and good construction Simple, simple and convenient effect of cast-in-place construction

Pending Publication Date: 2021-06-25
WUHAN GUANGYI ENG CONSULTING
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the cement-mixed soil has the characteristics of low strength and heavy weight, and the improvement of the bearing capacity of rigid piles is limited. Based on this, a foundation treatment technology for core-inserted piles with foam concrete bottom expansion combined with light solidification of the upper soil is proposed.

Method used

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  • Foam concrete expanded-base combined upper soil body light curing core-inserting pile treatment method
  • Foam concrete expanded-base combined upper soil body light curing core-inserting pile treatment method
  • Foam concrete expanded-base combined upper soil body light curing core-inserting pile treatment method

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] refer to Figure 1 ~ Figure 3 As shown, the foamed concrete bottom expansion in the first embodiment provided by the present invention is combined with the method for treating cored piles with light solidification of the upper soil, comprising the following steps:

[0029] 1) Drive the steel sleeve 6 into the soft soil foundation 5, then drill holes to take out the soil in the steel sleeve 6 to form the inner borehole 7, and drill the inner hole 7 with the reaming drill bit when the hole reaches the bottom Reaming is carried out at the bottom to form bottom reaming 8;

[0030] 2) Pouring the foamed concrete 1 in the steel sleeve 6 to the design elevation to form the bottom layer of foamed concrete 1 as the expansion layer;

[0031] 3) After the pouring of the bottom foam concrete 1 is completed, immediately pour the foam solidified soil 2 in ...

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Abstract

The invention discloses a foam concrete expanded-base combined upper soil body light curing core-inserting pile treatment method. The method comprises the following steps that a steel sleeve is driven into a soft soil foundation, then drilling is carried out, a soil body in the steel sleeve is taken out, an inner drill hole is formed, and the bottom of the inner drill hole is subjected to hole expanding; foam concrete is poured into the steel sleeve to the designed elevation, and bottom-layer foam concrete is formed; after the bottom-layer foam concrete is poured, foam curing soil or upper-layer foam concrete is poured into the steel sleeve to the ground elevation; and the steel sleeve is pulled out, and then a prefabricated rigid pile is inserted into the center of a pouring body in the steel sleeve to a certain depth of the bottom-layer foam concrete. The method has the advantages that the foundation additional stress is reduced, pouring is free of vibration, and the bearing capacity is greatly increased, construction is convenient and easy, and great economic efficiency is achieved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a method for treating core-inserted piles in which the bottom of foam concrete is expanded and the upper soil body is lightly solidified. Background technique [0002] Prefabricated rigid piles are a commonly used form of soft soil foundation treatment. They are widely used in industrial and civil construction, highways, railways, port docks and other projects. When the local foundation soil is soft, the pile diameter or pile length is usually increased to meet the bearing capacity. Force and deformation requirements, resulting in: (1) greatly increased the cost of the project, poor economy; (2) rigid piles increase the additional stress of the foundation, so that the degree of improvement in the bearing capacity of the foundation is relatively reduced; (3) prefabricated rigid piles When the pile diameter is small, the end resistance and side friction resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D3/08
CPCE02D3/00E02D3/08
Inventor 孙立强冯守中李洁周龙郎瑞卿宋文豪
Owner WUHAN GUANGYI ENG CONSULTING
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