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Flexible surface layer fabricated soil nail wall structure for foundation pit slope and construction method of flexible surface layer fabricated soil nail wall structure
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A flexible surface and assembled technology, which is applied in the direction of foundation structure engineering, excavation, sheet pile wall, etc., can solve the problems of weak force at nodes, unclear force mechanism, waste of building materials, etc., so as to achieve little impact on the surrounding environment, The effect of convenient construction and fast progress
Pending Publication Date: 2020-08-11
JIAN YAN FOUND ENG
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[0003] The purpose of the present invention is to provide a flexible surface assembled soil nail wall structure and its construction method for the slope of the foundation pit, to solve the problem of unclear stress mechanism of the traditional soil nail wall structure, weak stress at the nodes, and waste of building materials , poor environmental protection and low construction efficiency technical problems
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Embodiment 1
[0045] Embodiment 1, the construction method of the flexible surface layer assembled soil nail wall structure of the foundation pit slope, includes the following steps.
[0046] Step 1, excavating and repairing the side slope 1 of the foundation pit.
[0047] Step 2, accurately locate the position of the first layer of soil nails 2, and construct the first layer of soil nails 2.
[0048] Step 3, laying the flexible surface layer 3 from top to bottom.
[0049] Step 4, arrange horizontal beams 5 and inclined beams 6 around each soil nail 2 in the first layer of soil nails 2 .
[0050] Step 5, install the prefabricated connector 4 at the position of each soil nail 2 in step 4, and press the lateral side 4.1.1 of the prefabricated connector 4 on the outer surface of the horizontal beam 5, and the vertical The edge 4.1.2 is pressed on the outer surface of the inclined beam 6 .
[0051] In step six, the anchor 9 is used to lock the soil nail 2, and the prefabricated connector 4 i...
Embodiment 2
[0055] Embodiment 2, the construction method of the flexible surface layer assembled soil nail wall structure of the foundation pit slope, includes the following steps.
[0056] Step 1, excavating and repairing the side slope 1 of the foundation pit.
[0057] Step 2, laying the flexible surface layer 3 from top to bottom.
[0058] Step 3, arrange horizontal beams 5 and inclined beams 6 around each soil nail 2 in the first layer of soil nails 2 .
[0059] Step 4, install the prefabricated connecting piece 4 at the position of each soil nail 2 in step 4, and press the lateral side 4.1.1 of the prefabricated connecting piece 4 on the outer surface of the horizontal beam 5, and the vertical The edge 4.1.2 is pressed on the outer surface of the inclined beam 6 .
[0060] Step five, accurately locate the position of the first layer of soil nails 2, and construct the first layer of soil nails 2.
[0061] In step six, the anchor 9 is used to lock the soil nail 2, and the prefabrica...
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Abstract
The invention provides a flexible surface layer fabricated soil nail wall structure for a foundation pit slope and a construction method of the flexible surface layer fabricated soil nail wall structure. Soil nails, flexible surface layers, prefabricated connecting pieces, horizontal beams and inclined beams are included; the flexible surface layers are laid on the side slope; the prefabricated connecting pieces comprise pressing plates and convex blocks; the pressing plates comprise horizontal edges and vertical edges; the convex blocks are arranged at the cross points of the pressing plates,and the vertical sections of the convex blocks are square or rectangular; the prefabricated connecting pieces are arranged in a matrix mode; the convex blocks are vertically pressed on the flexible surface layers; at least one positioning installation hole passage is arranged on the middle part of each prefabricated connecting piece, the horizontal beams are correspondingly arranged between the adjacent prefabricated connecting pieces in the horizontal direction, two ends of the horizontal edges of the pressing plates are pressed on the horizontal beams on both sides; the inclined beams are correspondingly arranged between the adjacent prefabricated connecting pieces in the inclined direction, two ends of the vertical edges of the pressing plates are pressed on the inclined beams on two sides, and the soil nails are correspondingly arranged in the positioning installation hole passages of the prefabricated connecting pieces in a penetrating mode. The technical problems of unclear force mechanism, weak force at joints, waste of building materials, poor environmental protection and low construction efficiency of a traditional soil nail wall structure are solved.
Description
technical field [0001] The invention belongs to the field of geotechnical engineering foundation pit support and design and construction of slopes, in particular to a flexible surface layer assembled soil nail wall structure for foundation pit slopes and a construction method thereof. Background technique [0002] The soil nail wall is a kind of retaining structure used to keep the side wall or slope of the foundation pit stable during soil excavation. It is composed of the reinforced concrete surface layer on the soil surface and the reinforced soil between the soil nails. The current soil nail wall technology is as follows: firstly, soil nails are made and installed after excavation of the foundation pit and slope, and then a steel mesh is laid on the surface of the foundation pit and slope, and then a layer of concrete surface is sprayed to form a soil nail, spray Foundation pit slope support system composed of concrete rigid surface and reinforced soil. The main points...
Claims
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Application Information
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