Deep mixing pile-micro pre-stressed steel pipe concrete pile-vertical anchor rod composite foundation pit support method

A technology for steel pipe concrete piles and deep mixing piles, which is applied in foundation structure engineering, sheet pile walls, excavation, etc., and can solve the problems of damage, bending resistance, shear resistance, overturning resistance and slip resistance, which affect the safety of foundation pit buildings and other issues, to achieve short construction period, improve anti-overturning and anti-sliding ability, and favorable effects of environmental protection
CN101851925AInactive Publication Date: 2010-10-06WUHAN SURVEYING GEOTECHN RES INST OF MCC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN SURVEYING GEOTECHN RES INST OF MCC
Publication Date
2010-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a deep mixing pile-micro pre-stressed steel pipe concrete pile-vertical anchor rod composite foundation pit support method. The method comprises the following steps: (1) constructing the deep mixing pile; (2) grouting at an anchoring end; and (3) forming the micro pre-stressed steel pipe concrete pile. The method has the advantages that as the deep mixing pile is equipped with the micro pre-stressed steel pipe pile and an anchor rod or an anchor rope, the bending and shearing bearing capacity thereof is improved; the antidumping and anti-slip capability of the wall body of the mixing pile is improved under the condition of not exceeding a land red line; and meanwhile the combined support method has the advantages of short construction period, low noise, no pollution and no soil squeezing and is very beneficial to environmental protection during the construction process, thus being a novel combined support member and a method which are worth to be popularized and applied.
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Description

technical field

[0001] The invention relates to the technical field of construction, in particular to a composite foundation pit supporting method of deep mixing piles + micro prestressed steel pipe concrete piles + vertical anchor rods. Background technique

[0002] The safety of the foundation pit is directly related to the safety of life and property. How to ensure the safety of the foundation pit under economical and reasonable conditions depends on the reliability of the support system. However, the conventionally used gravity retaining wall with deep mixing piles has poor bending resistance, shear resistance, overturning resistance and slip resistance, and is easily damaged under the action of earth pressure, which affects the safety of the foundation pit and surrounding buildings. Therefore, it is necessary to improve the prior art. Contents of the invention

[0003] The purpose of the present invention is to develop a kind of deep mixing pile+miniature prestressed...

Claims

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