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Combined supporting construction method of two rows of grouting piles and pull anchoring and shotcreting layer

A technology of anchoring, spraying and joint support, which is applied in the direction of excavation, sheet pile wall, foundation structure engineering, etc., can solve the problems of poor slope stability and large foundation pit excavation depth, so as to improve efficiency, protect the environment, The effect of shortening the construction period

Active Publication Date: 2015-02-04
安徽水利开发有限公司
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  • Claims
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Problems solved by technology

[0002] With the continuous development of urban construction, the construction of construction projects, municipal engineering and various large-scale projects has been rapidly expanded, and the problem of deep foundation pit support has gradually emerged. The depth is large, the stability of the slope is poor, and the support system is limited by the objective conditions of the excavation work face and the surrounding adjacent buildings and structures. Efficiency and coordination with the environment are issues that need to be considered comprehensively, and its comprehensive effect is the goal that is constantly pursued in engineering

Method used

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  • Combined supporting construction method of two rows of grouting piles and pull anchoring and shotcreting layer
  • Combined supporting construction method of two rows of grouting piles and pull anchoring and shotcreting layer
  • Combined supporting construction method of two rows of grouting piles and pull anchoring and shotcreting layer

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Embodiment Construction

[0034] see figure 1 , figure 2 , image 3 and Figure 4 , the combined support structure of the double-row grouted piles and the tension-anchor-sprayed layer in this embodiment is

[0035] A double row of grouting piles consisting of a front row of piles 1 and a rear row of piles 2 is set up. The front row of piles 1 and the rear row of piles 2 are respectively arranged at equal intervals by reinforced crushed stone grouting piles and plain piles. The rear row of piles 2 are jointly connected by the top ring beam 3; the anchor-spraying layer 4 is formed on the excavation support surface; Stone grouting pile 2a is to be in the position of left and right staggered.

[0036] The pile core of the reinforced crushed stone grouting pile is a reinforced steel unit, and the pile body is formed by mixing crushed stone and cement slurry under high pressure. The plain pile 1b in the front row and the plain pile 2b in the back row are plain concrete piles.

[0037] Such as image 3...

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Abstract

The invention discloses a combined supporting construction method of two rows of grouting piles and a pull anchoring and shotcreting layer. The combined supporting construction method is characterized in that the two rows of grouting piles formed by a front row of piles and a back row of piles are arranged, the front row of piles and the back row of piles are respectively arranged at equal distance and intervals by stiffened gravel grouting piles, plain piles and the like, and the front row of piles and the back row of piles are connected together by a top ring beam; the pull anchoring and shotcreting layer is formed at an excavation and support surface; cores of the stiffened gravel grouting piles are stiffened structural steel units, bodies of the stiffened gravel grouting piles are obtained by high-pressure mixed molding of road metal and cement paste, and the plain piles are plain concrete piles. The combined supporting construction method aims at construction occasions that the cutting depth of a foundation pit is large, the slope stability is poor and a support system is restricted by an excavation working face and surrounding objective conditions, and the construction difficulty is reduced, the construction efficiency is improved and the construction cost is reduced on the premise of meeting requirements on safety, strength and stability.

Description

technical field [0001] The invention relates to a combined support construction method of a reinforced gravel grouting pile spray-anchor structure, more specifically, a support construction method applied in deep foundation pits, side slopes and other occasions. Background technique [0002] With the continuous development of urban construction, the construction of construction projects, municipal engineering and various large-scale projects has been rapidly expanded, and the problem of deep foundation pit support has gradually emerged. The depth is large, the stability of the slope is poor, and the support system is limited by the objective conditions of the excavation work face and the surrounding adjacent buildings and structures. Efficiency and coordination with the environment are issues that need to be considered comprehensively, and its comprehensive effect is the goal that is constantly pursued in engineering. Contents of the invention [0003] The invention provi...

Claims

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Application Information

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IPC IPC(8): E02D17/04
CPCE02D5/36E02D5/76E02D15/02E02D15/04E02D17/04E02D2250/0023E02D2300/002E02D2600/30
Inventor 徐小娥陶成祥梅云鹏刘亮张松涛刘通胡广超杨光
Owner 安徽水利开发有限公司
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