CT sealed steel pipe pile foundation pit water stop supporting device and construction method thereof

A technology of supporting device and steel pipe pile, which is applied in basic structure engineering, sheet pile wall, excavation and other directions to achieve the effect of construction safety, resource saving and high quality

Inactive Publication Date: 2011-07-27
BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a CT-type locking steel pipe pile foundation pit water-stop support device and construction method, to solve the problem of weak strata wit

Method used

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  • CT sealed steel pipe pile foundation pit water stop supporting device and construction method thereof
  • CT sealed steel pipe pile foundation pit water stop supporting device and construction method thereof
  • CT sealed steel pipe pile foundation pit water stop supporting device and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment one sees figure 1 , figure 2 and Figure 6 , Figure 8 and Figure 9 As shown, a CT-type locking steel pipe pile foundation pit water stop support device includes a closed water stop curtain and a support structure surrounded by steel pipe piles 1, and the support structure includes at least two inner purlins 2 and inner support, the inner purlin is closely attached to the inner surface of the steel pipe pile through the inner support, the steel pipe pile 1 includes a main steel pipe 1.1 and an interlocking steel pipe 1.2, and the outer surface of the main steel pipe 1.1 is welded with an interlocking I Steel 1.4, the occlusal steel pipe 1.2 is circumscribed with the main steel pipe 1.1, and is welded on the outer surface of the main steel pipe through two connecting steel bars 1.5, and the line connecting the centroid of the main steel pipe 1.1 is perpendicular to the axis of the occlusal I-beam 1.4 Or on the same straight line, the occlusal steel pipe ...

Embodiment 2

[0042] Embodiment two see image 3 and Figure 6 As shown, the difference from Embodiment 1 is that the inner support is a combination of a corner support 4 and a horizontal support 3 .

Embodiment 3

[0043] Embodiment three see Figure 4 and Figure 6 As shown, the difference from the first embodiment is that the inner support is a combination of the corner support 4 and the horizontal support 3, and the corner support 4 is two.

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Abstract

The invention relates to a CT sealed steel pipe pile foundation pit water stop supporting device and a construction method thereof. The CT sealed steel pipe pile foundation pit water stop supporting device comprises a closed water stop curtain which is formed by enclosing steel pipe piles, and a supporting structure, wherein the supporting structure comprises at least two internal enclosing purlins and internal supports; the internal enclosing purlins are tightly adhered to the internal surfaces of the steel pipe piles through the internal supports; each steel pipe pile comprises a main steel pipe and an occluded steel pipe; occluded I-steel is welded on the external surface of the main steel pipe; and the occluded steel pipe is externally tangent to the main steep pipe and is welded on the external surface of the main steel pipe through a connecting steel bar. The device has the advantages of simple structure, smart concept and good water stop and supporting effects, and can be widely applied to the water stop and supporting of a soft formation, an artificial sea reclamation formation, an artificial hydraulic reclamation riprap formation and the like with the excavating depth of 8 to 15m.

Description

technical field [0001] The invention relates to a foundation pit water stop supporting device and a construction method. Background technique [0002] At present, with the increasing number of building development projects for artificial land reclamation, in areas with rich groundwater and thick permeable layers such as artificial reclamation, soft ground, artificial dredging and riprap, when carrying out large-scale infrastructure construction, the primary solution The most important problem is the difficulty of water stop and high safety risk. The rigidity of the traditional steel pipe pile cofferdam cannot meet the requirements of deep excavation; the caisson, concrete pile and other cofferdam forms have disadvantages such as complex process, long construction period and high cost. Therefore, choosing a suitable cofferdam form and appropriate construction technology is the fundamental solution to the problem of foundation pit water stop and safety support, and is also th...

Claims

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Application Information

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IPC IPC(8): E02D17/02E02D19/18E02D5/28
Inventor 孙圣明郭志仁尤宏坤涂常立鲍凯王莹张晶何辉斌
Owner BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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