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Supporting structure suitable for non-closed foundation pit

A support structure, non-closed technology, applied in the direction of basic structure engineering, excavation, construction, etc., to achieve the effect of wide application, guaranteed stability, and reliable reinforcement effect

Pending Publication Date: 2018-06-12
SHANGHAI PUDONG ARCHITECTURAL DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the existing construction plan is continued, the non-closed foundation pit project will be at greater risk

Method used

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  • Supporting structure suitable for non-closed foundation pit
  • Supporting structure suitable for non-closed foundation pit
  • Supporting structure suitable for non-closed foundation pit

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A support structure suitable for non-closed foundation pits, such as Figure 1~3 As shown, it is arranged around the wall of the foundation pit, including the retaining pile 1, the ring beam 2, the support 3, the MJS reinforcement 4, the retaining plate 5 and the reinforcement 6 in the pit arranged on the soil of the pit wall. The surrounding protection pile 1 is arranged as usual in the general area (outside the existing pipeline area), and is arranged outside the excavation sideline 7 of the foundation pit, and the outer side of the surrounding protection pile 1 is provided with a water-stop curtain 13. In the existing pipeline area, the surrounding protection pile 1 is constructed to the top of the existing pipeline 8; the ring beam 2 is arranged close to the inside of the retaining pile 1 to form a horizontal closed beam system; the support 3 is arranged horizontally in the foundation pit, and the end is connected with the ring beam 2; Around the existing pipeline 8...

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Abstract

The invention relates to a supporting structure suitable for a non-closed foundation pit. The supporting structure is arranged around the pit wall of a foundation pit and comprises enclosing piles (1)and ring beams (2), and the ring beams (2) are attached to the inner sides of all the enclosing piles (1) for arrangement to form a horizontally-enclosed beam system. The supporting structure furthercomprises an MJS reinforcing body (4) and a soil retaining board (5). Waterproof curtains (13) are arranged at the outer sides of the enclosing piles (1) outside an existing pipeline area of the foundation pit wall. The pile bottoms of the enclosing piles (1) are constructed to the position above an existing pipeline (8) in the existing pipeline area of the foundation pit wall. The MJS reinforcing body (4) is arranged around the existing pipeline (8) in the pit wall at the outer side of the foundation pit. The soil retaining board (5) is arranged between an excavation face of the foundation pit and a soil mass free face below the existing pipeline (8), and the two ends of the soil retaining board (5) are connected with the enclosing piles (1) at the two sides of the existing pipeline (8)correspondingly. Compared with the prior art, the supporting structure suitable for the non-closed foundation pit has the advantages of being capable of protecting the ambient environment, wide in application face, safe and reliable in structure and the like.

Description

technical field [0001] The invention relates to a support structure, in particular to a support structure suitable for non-closed foundation pits. Background technique [0002] During the construction of municipal pipelines, limited by site conditions, such as dense distribution of existing pipelines in the direction of pipeline jacking, insufficient pipe jacking force, temporary adjustment of pipeline routes, etc., the original trenchless construction technology of some road sections had to be changed to open excavation law construction. [0003] Due to the existence of existing pipelines, the foundation pit enclosure structure of the open cut method cannot be constructed on one or more sides, thus forming a non-closed foundation pit. In the case of a small buried depth of the pipeline, the excavation of the earthwork and the laying of the pipeline can be successfully realized in the non-closed foundation pit by locally strengthening the water-stopping measures. However, ...

Claims

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Application Information

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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 李永刚盛棋楸高云开梁红波程昕晨刘潇
Owner SHANGHAI PUDONG ARCHITECTURAL DESIGN & RES INST
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