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Construction method of flexible surface protection soil nailing wall

A construction method, the technology of soil nailing walls, applied in excavation, foundation structure engineering, construction, etc., to achieve the effects of ensuring construction quality, enhancing integrity, and avoiding pollution

Inactive Publication Date: 2022-04-12
BEIJING ZHONGYAN DADI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that there is no relatively mature construction method for flexible face-retaining soil-nail walls, the present invention proposes a construction method for flexible face-retaining soil-nail walls, which overcomes the deficiencies in the prior art

Method used

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  • Construction method of flexible surface protection soil nailing wall
  • Construction method of flexible surface protection soil nailing wall
  • Construction method of flexible surface protection soil nailing wall

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as Figure 1~4 As shown, a construction method for a wall with soil nails 2 for flexible armor is based on a flexible armor assembly system. Line 4; the reinforced isolation surface protection net 1 is pressed by a three-layer structure, the upper and lower layers are steel mesh, the middle layer is geotextile, and a plurality of transverse steel bars are arranged on the surface of the steel mesh; the connecting plate 3 includes a connecting plate 3 bottom surface, triangular ribs, the bottom surface of the connecting plate 3 is a square structure, the triangular ribs are respectively arranged at the four corner points of the bottom surface of the connecting plate 3 along the diagonal line of the bottom of the connecting plate 3, and there are connecting holes in the middle of the corner ribs; The two ends of the connecting steel strand 4 are provided with connecting hooks, and the middle part is provided with tensioning screws; adopt the following steps to carry o...

Embodiment 2

[0042] During the slope excavation of the foundation pit, the slope is 1:1, and the construction method introduced in this technical plan is adopted for construction. The construction steps are as follows:

[0043] Such as Figure 1~4 As shown, a construction method for a wall with soil nails 2 for flexible armor is based on a flexible armor assembly system. Line 4; the reinforced isolation surface protection net 1 is pressed by a three-layer structure, the upper and lower layers are steel mesh, the middle layer is geotextile, and a plurality of transverse steel bars are arranged on the surface of the steel mesh; the connecting plate 3 includes a connecting plate 3 bottom surface, triangular ribs, the bottom surface of the connecting plate 3 is a square structure, the triangular ribs are respectively arranged at the four corner points of the bottom surface of the connecting plate 3 along the diagonal line of the bottom of the connecting plate 3, and there are connecting holes ...

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Abstract

The invention discloses a construction method of a flexible surface protection soil nailing wall, and belongs to the technical field of soil nailing wall construction in the field of slope supporting and foundation pit supporting. A flexible surface protection assembly system comprises a reinforced isolation surface protection net, soil nails, connecting plates and connecting steel strands; the reinforced isolation surface protection net is formed by pressing a three-layer structure, the upper layer and the lower layer are reinforcing meshes, the middle layer is geotechnical cloth, and a plurality of transverse reinforcing steel bars are arranged on the surfaces of the reinforcing meshes. The connecting plate comprises a connecting plate bottom face and triangular rib plates, the connecting plate bottom face is of a square structure, the triangular rib plates are arranged at the four corner points of the connecting plate bottom face along the diagonal lines of the connecting plate bottom face respectively, and connecting holes are formed in the middles of the corner rib plates. Connecting hooks are arranged at two ends of the connecting steel strand, and a tensioning screw is arranged in the middle of the connecting steel strand; the construction method comprises the following specific construction steps: arranging a reinforced isolation surface protection net; soil nail construction; soil nail connection; and finishing the construction operation. The reinforced isolation surface protection net is adopted to replace a traditional anchor net spraying technology, pollution is avoided, and integrity and safety are improved.

Description

technical field [0001] The invention relates to the construction technology of soil nailing walls in the field of slope support and foundation pit support, and in particular to a construction method of soil nailing walls with flexible face protection. Background technique [0002] Among the many foundation pit support methods, soil nail wall support is the most common support form. Because of its low construction cost and fast construction speed, it is suitable for non-soft soils with low deformation requirements and site grading. It is widely used in the slope or foundation pit engineering of the site. The surface layer of the traditional soil nail wall support system is mostly shotcrete surface layer, but shotcrete has problems such as uneven surface layer thickness and dust pollution. After that, the method of flexible surface protection gradually developed. The flexible surface protection is the use of flexible surface layer ( Such as geotextile) combined with reinforce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
Inventor 朱庆凯宋伟杰李建平刘博刘光磊武思宇
Owner BEIJING ZHONGYAN DADI TECH CO LTD