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Non-excavated micro-pile group/bundle pile-slab wall support structure and construction method

A non-excavation, supporting structure technology, applied in the direction of foundation structure engineering, excavation, sheet pile wall, etc., to achieve the effect of saving construction procedures

Pending Publication Date: 2020-11-13
信息产业部电子综合勘察研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the existing micropile generally only constructs the micropile group in the lower part of the excavation area, it is only aimed at the protection of the rock formation, and in some non-excavation areas, especially in areas with strong expansive force and loess areas , there is no relevant technical means for slope protection

Method used

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  • Non-excavated micro-pile group/bundle pile-slab wall support structure and construction method
  • Non-excavated micro-pile group/bundle pile-slab wall support structure and construction method
  • Non-excavated micro-pile group/bundle pile-slab wall support structure and construction method

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Embodiment 1

[0060] The present invention also provides a construction method for a non-excavation micro-pile group / bundle pile slab wall support structure, the construction method is suitable for slopes formed by expansive soil regions and loess regions, and includes the following steps:

[0061] Step 1) Drilling:

[0062] Drill straight holes on the same horizontal line along the upper end of the slope protection body to construct upper grouting pipes of multiple unit modules,

[0063] In the lower part of the upper grouting pipes of multiple unit modules and on the same transverse horizontal line, the middle spiral grouting pipes of multiple unit modules are constructed,

[0064] And the lower grouting pipes of multiple unit modules are constructed on the same horizontal horizontal line in the middle spiral micro-pile group of multiple unit modules;

[0065] Step 2) build the miniature pile group:

[0066] Construct the upper support body along the inner wall of the upper grouting pip...

Embodiment 2

[0084] The present invention also provides a construction method of a non-excavation type miniature pile group / bundle pile slab wall support structure, the construction method is suitable for slope protection with rock formations, comprising the following steps:

[0085] Step 1) Drilling:

[0086] Drill straight holes on the same horizontal line along the upper end of the slope protection body to construct upper grouting pipes of multiple unit modules,

[0087] Constructing middle grouting pipes of multiple unit modules on the lower part of the upper grouting pipes of multiple unit modules and on the same transverse horizontal line,

[0088] And the lower grouting pipes of multiple unit modules are constructed on the same horizontal horizontal line in the medium and micro pile groups of multiple unit modules;

[0089] Step 2) build the miniature pile group:

[0090] Lower the upper reinforcement cage to the first base along the inner side of the inner wall of the upper grout...

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Abstract

The invention provides a non-excavated micro-pile group / bundle pile-slab wall support structure and a construction method. The non-excavated micro-pile group / bundle pile-slab wall support structure comprises one or more micro-pile combined units fixed into a slope protection body, and each micro-pile combined unit comprises an upper micro-pile group, a middle micro spiral pile group and a lower micro-pile group arranged on the slope protection body on the same bevel face from top to bottom; and the upper micro-pile groups, the middle micro spiral pile groups and the lower micro-pile groups arefixed through concrete connecting pieces, and by adopting the concrete connecting pieces as the datum, the surfaces of the upper micro-pile group, the middle micro spiral pile group and the lower micro-pile group in each micro-pile combined unit are poured with reinforced concrete for connection to form a reinforced concrete slab surface layer of one unit. The invention discloses the constructionmethod of a system.

Description

technical field [0001] The invention relates to the technical field of slope protection, in particular to a slope protection technology in loess areas, in particular to a non-excavation type miniature pile group / bundle pile slab wall support structure and a construction method. Background technique [0002] Micro-piles generally refer to small-diameter bored piles with a pile diameter of 70-300mm, and their slenderness is relatively large. Only light construction equipment is needed during construction, the pile position layout is flexible, the construction speed is fast, the adaptability to the construction site is strong, and the impact on the environment is small. In recent years, it has been continuously applied to landslide control, slope reinforcement and other projects. [0003] The construction operation of micro piles is mainly divided into four stages, one is drilling according to the requirements, the other is an uninterrupted cleaning process of the holes during...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D15/02E02D15/04E02D5/76E02D5/34E02D5/56E02D5/52
CPCE02D5/34E02D5/526E02D5/56E02D5/76E02D15/02E02D15/04E02D17/20E02D17/207E02D2250/0023
Inventor 南亚林梁迪张辉韩晓雷张鹏秦仕伟刘魁刘衡王馨宋学庆田超杨旭
Owner 信息产业部电子综合勘察研究院