A deep foundation pit oblique support support structure and construction method

A technology of supporting structure and construction method, which is applied in the direction of basic structure engineering, excavation, construction, etc., can solve the problems of long construction period, large error, and difficulty in controlling the installation accuracy of diagonal braces, so as to reduce manpower and material resources, reduce construction quality, Effect of simple bolting method

Active Publication Date: 2022-05-17
杭州京杭运河二通道建设投资有限公司 +3
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Problems solved by technology

This method requires a large area of ​​earthwork to be excavated in advance, and it is necessary to manually operate the crane to fix and correct the braces, which consumes a lot of manpower and material resources. The construction period is long and the accuracy of the brace installation is difficult to control, resulting in large errors.

Method used

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  • A deep foundation pit oblique support support structure and construction method
  • A deep foundation pit oblique support support structure and construction method
  • A deep foundation pit oblique support support structure and construction method

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the examples.

[0050] The deep foundation pit of this embodiment mainly adopts the support form of drilling to enclose the main pile, two upper and lower inner horizontal braces, one outer horizontal brace, one steel structure diagonal brace and one anchor beam. Supported by slots, the principle of supporting first and then digging is adopted, and layered, segmented, uniform and symmetrical excavation is achieved. At the same time, temporary drainage in the foundation pit is done to ensure drainage inside the foundation pit.

[0051] Such as figure 1 As shown, the deep foundation pit steel pipe oblique support support structure of this embodiment includes steel structure oblique braces 1, main piles 2 and bottom plates 4, the main piles are arranged on both sides of the deep foundation pit, and the oblique braces 1 are located near the main pile 2. soil side, that is, figure 1 The dia...

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Abstract

The invention discloses a deep foundation pit oblique support support structure and a construction method, comprising oblique braces, main piles and a bottom plate, the main piles are arranged on both sides of the deep foundation pit, the oblique braces are located near the soil side of the main piles, and the oblique braces pass through The main pile passes through and is connected with it, the bottom plate is located on the far soil side of the main pile, and the diagonal brace, the main pile and the bottom plate are connected as a whole. In the case of non-excavation in advance, the invention adopts the pipe jacking technology to install the oblique support of steel pipes in deep foundation pits. The invention has a wide range of applications and can be applied to different types of oblique support systems and deep foundations of different depths. pits, and can be applied to soft soil or water-rich soft soil layers, and can cross roads, railways, rivers, and ground buildings for underground pipeline construction.

Description

technical field [0001] The invention relates to a support structure and a construction method thereof, in particular to a deep foundation pit oblique support support structure and a construction method. Background technique [0002] At present, there are some problems in the foundation pit engineering, which are mainly manifested in three aspects: first, the excavation area of ​​the foundation pit project is relatively large; second, the excavation depth of the foundation pit project is relatively deep; third, the surrounding environment of the foundation pit project requires Protect. These three problems all put forward higher requirements for foundation pit technology. In foundation pit engineering, many factors such as safety, operability and economy need to be considered. If only a single support form is used in foundation pit engineering, it will be difficult to meet the technical requirements. Therefore, the ideal way is to choose different support forms for combinat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04E02D15/08
CPCE02D17/04E02D15/08E02D2600/20E02D2300/0029Y02E10/20
Inventor 楼伟中李继才杨文帅郦纲龚政余杰陈秀瑛李月先孙阳吴腾
Owner 杭州京杭运河二通道建设投资有限公司
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