Soil nailing wall slope supporting structure

Abstract

The utility model relates to a soil nailing wall slope supporting structure which comprises a slope, soil nails, a reinforcing mesh, a supporting mesh frame, a concrete layer and a waterproof platform. A drainage pipe is horizontally arranged in the slope, and one end of the drainage pipe penetrates through the slope surface to communicate with the outside; the soil nails are anchored in the slope surface, the reinforcing mesh is laid on the slope surface, the supporting mesh frame is laid on the reinforcing mesh, and the reinforcing mesh and the supporting mesh frame extend upwards to the slope top and are laid on the surface of the slope top after being bent; fasteners are arranged at the tail portions of the soil nails, and the supporting vertical frame and the supporting transverse frame are fixed to the side slope. The concrete layer is arranged on the slope surface and covers the supporting net rack; anchoring parts are vertically arranged on the slope crest to fix the supporting net rack and the supporting vertical rack on the slope crest; the waterproof platform is arranged on the slope top and located on the supporting net frame of the slope top, the supporting structure and the slope top are integrated, the integrity and rigidity of the soil nailing wall structure are enhanced, various stresses on a slope can be better dispersed and borne, and the stability and safety of the slope are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slope support, and particularly relates to a soil nailing wall slope support structure. Background Art

[0002] The miscellaneous fill layer mainly consists of construction waste, brick slag, and planting soil, with many vegetation roots and uneven soil distribution. During the slope support construction of the miscellaneous fill layer, problems such as slope surface instability, landslides, and collapses are likely to occur.

[0003] Firstly, the mixing of different materials in the miscellaneous fill layer results in uneven soil quality, low strength and density, and low overall shear strength, making it prone to landslides and collapses.

[0004] Secondly, the materials of different components in the miscellaneous fill layer have large differences in water permeability, which easily leads to local water accumulation or seepage problems, thereby triggering slope surface instability and landslides.

[0005] Finally, the vegetation roots in the miscellaneous fill layer will damage the soil structure, reduce the soil strength, and reduce the stability of the slope surface.

[0006] In summary, due to the complex composition, uneven soil strength, and large difference in water permeability of the miscellaneous fill layer, when using the existing soil nailing wall structure for slope surface support, there are problems such as water seepage, poor anchoring effect, and easy occurrence of instability and landslides.

[0007] Based on this, it is necessary to study a soil nailing wall slope support structure. Content of the Utility Model

[0008] In view of this, the purpose of the utility model is to provide a soil nailing wall slope support structure, which can effectively solve the problems of instability and landslides that are prone to occur when using soil nailing wall support for the miscellaneous fill layer due to the complex composition, poor soil strength, and strong water permeability of the miscellaneous fill layer.

[0009] To achieve the above purpose, the technical solution adopted by the utility model is:

[0010] A soil nailing wall slope support structure includes a slope, soil nails, a steel mesh, a support grid, a concrete layer, and a waterproof platform;

[0011] A drain pipe is horizontally arranged in the slope, and one end of the drain pipe penetrates through the slope surface and communicates with the outside;

[0012] Multiple groups of soil nails are provided, and the soil nails are vertically anchored in the slope surface, and the tails of the soil nails extend outside the slope surface;

[0013] The steel mesh is laid on the slope surface, and the upper part of the steel mesh extends to the top of the slope and is horizontally laid on the surface of the top of the slope after being bent;

[0014] The support grid includes support vertical frames and support horizontal frames;

[0015] The support vertical frames are vertically and spacedly laid on the steel mesh, and the upper part of the support vertical frames extends to the slope top and is horizontally laid on the steel mesh at the slope top after being bent;

[0016] The support horizontal frames are horizontally and spacedly laid on the support vertical frames and intersect with the support vertical frames to form a rectangular grid structure;

[0017] The tail of the soil nail is located at the intersection point of the support vertical frame and the support horizontal frame, and a fastener is arranged at the tail of the soil nail, and the fastener fixes the support vertical frame and the support horizontal frame on the slope;

[0018] The concrete layer is arranged on the slope surface and covers the support grid;

[0019] At least one group of support horizontal frames is arranged on the part of the support vertical frame extending to the slope top;

[0020] Anchor fasteners are vertically arranged at the slope top to fix the support horizontal frame and the support vertical frame located at the slope top on the slope top;

[0021] The waterproof platform is arranged at the slope top and covers the support horizontal frame at the slope top.

[0022] Further, the concrete layer extends upward to the slope top and is connected to the water retaining platform, and the concrete layer and the water retaining platform are of an integral casting structure.

[0023] Further, the support vertical frame includes two vertically arranged vertical steel bars, the support horizontal frame includes two horizontally arranged horizontal steel bars, the tail of the soil nail is simultaneously located between the two vertical steel bars and the two horizontal steel bars, and the fastener abuts against the outer end surfaces of the two horizontal steel bars to fix the support grid on the slope.

[0024] Further, the fastener includes abutting columns fixed on the upper and lower sides of the soil nail, the abutting columns are parallel to the soil nail, and the end parts of the two abutting columns respectively abut against the outer surfaces of the two horizontal steel bars.

[0025] Further, an anchoring hole is formed at the slope top, the anchor fastener is an anti-floating anchor rod, an anti-floating plate is fixedly sleeved on the anti-floating anchor rod, the anti-floating plate is distributed in the anchoring hole, and a plurality of through holes penetrating up and down are formed in the anti-floating plate.

[0026] Further, the anchor fasteners are distributed on both sides of the support vertical frame, and the anchor fasteners and the soil nails are arranged in a staggered manner along the length direction of the slope.

[0027] Further, a drainage channel is arranged at the bottom of the slope of the slope.

[0028] The beneficial effects of the above technical solutions are:

[0029] The upper part of the steel bar mesh of the utility model extends to the top of the slope and is horizontally laid on the surface of the slope top after being bent. The upper part of the supporting vertical frame extends to the top of the slope and is horizontally laid on the steel bar mesh at the slope top after being bent. At least one group of supporting cross frames is arranged on the part of the supporting vertical frame extending to the top of the slope. Anchor fittings are vertically arranged at the slope top to fix the supporting cross frames and the supporting vertical frames at the slope top on the slope top. The waterproof platform is arranged at the slope top and covers the supporting cross frames at the slope top, integrating the supporting structure with the slope top.

[0030] First of all, since there are often vegetation roots and loose soil bodies in the miscellaneous fill soil layer, it is easy to form a water seepage channel. The water retaining platform can block surface water from seeping into the slope interior by forming a physical barrier at the slope top, effectively controlling the entry of water into the miscellaneous fill soil layer and improving the anti-seepage ability of the slope.

[0031] Secondly, the steel bar mesh and the supporting vertical frame extend upward to the slope top, and are fixedly connected through the supporting cross frames and the anchor fittings. Moreover, the supporting structure is integrated with the slope top through the water retaining platform, enhancing the integrity and stiffness of the soil nail wall structure, being able to better disperse and bear various stresses on the slope, effectively coping with the problem of uneven soil strength caused by brick slag, construction waste and other heterogeneous substances in the miscellaneous fill soil layer, and improving the stability and safety of the slope.

[0032] To sum up, through the design of extending the steel bar mesh and the supporting grid frame upward to the slope top and setting the water retaining platform for water blocking and reinforcement, combined with the criss-cross supporting grid frame structure and the sprayed concrete layer, the problems of instability and landslide that are likely to occur during the soil nail wall support for the miscellaneous fill soil layer due to the complex composition, poor soil strength and strong water permeability of the miscellaneous fill soil layer can be effectively solved, with remarkable anti-seepage, anti-slip and anti-loss effects, and being able to significantly improve the quality and stability of the slope support for the miscellaneous fill soil layer. Brief Description of the Drawings

[0033] Figure 1 It is a schematic side sectional view of the utility model;

[0034] Figure 2 It is a schematic front view of the slope surface of the utility model;

[0035] Figure 3 It is a schematic top view of the utility model;

[0036] Figure 4 It is a schematic top view of the anti-floating plate.

[0037] Reference numerals: 1 is a slope, 2 is a soil nail, 3 is a steel mesh, 4 is a support grid, 5 is a concrete layer, 6 is a waterproof platform, 7 is a drain pipe, 8 is a fastener, 9 is an anchor, 10 is a drainage channel, 101 is a slope surface, 102 is the slope top, 103 is the slope bottom, 401 is a support vertical frame, 402 is a support horizontal frame, 403 is a vertical reinforcement, 404 is a horizontal reinforcement, 801 is a butting column, 901 is an anti-floating plate, and 902 is a through-flow hole. Detailed implementation manners

[0038] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners:

[0039] This embodiment aims to provide a soil-nailed wall slope support structure, which is mainly used for soil-nailed wall slope support of a foundation pit in a miscellaneous fill soil layer, aiming to solve the problems of instability and landslide that are likely to occur when soil-nailed wall support is carried out on the miscellaneous fill soil layer due to the complex composition, poor soil strength, and strong water permeability of the miscellaneous fill soil layer.

[0040] A soil-nailed wall slope support structure, as Figure 1 , includes a slope 1, soil nails 2, a steel mesh 3, a support grid 4, a concrete layer 5, and a waterproof platform 6.

[0041] A drain pipe 7 is horizontally penetrated in the slope 1, and one end of the drain pipe 7 penetrates through the slope surface 101 to communicate with the outside. The drain pipe 7 is mainly used to drain the accumulated water inside the slope 1. Regarding the specific structure and method of penetrating the drain pipe 7 in the slope 1 support structure, existing technologies are all adopted and will not be elaborated here.

[0042] Multiple groups of soil nails 2 are provided. First, a number of hole positions are vertically drilled on the slope surface 101, and then the soil nails 2 are inserted into the hole positions. At the same time, concrete is injected into the hole positions, and the soil nails 2 are vertically anchored in the slope surface 101 at the same time. The tail of the soil nail 2 extends outside the slope surface 101. The specific anchoring structure and method of the soil nail 2 all adopt existing technologies and will not be elaborated here.

[0043] The steel mesh 3 is laid on the slope surface 101, and the upper part of the steel mesh 3 extends to the slope top 102 and is horizontally laid on the surface of the slope top 102 after being bent.

[0044] The support grid 4 includes a support vertical frame 401 and a support horizontal frame 402; as Figure 1 , Figure 2 and Figure 3, the supporting vertical frames 401 are vertically and spacedly laid on the steel mesh 3. The upper part of the supporting vertical frames 401 extends to the slope top 102 and is horizontally laid on the steel mesh 3 at the slope top 102 after being bent. The supporting horizontal frames 402 are horizontally and spacedly laid on the supporting vertical frames 401 and intersect with the supporting vertical frames 401 to form a rectangular grid structure. The tail of the soil nail 2 is located at the intersection point of the supporting vertical frames 401 and the supporting horizontal frames 402. A fastener 8 is provided at the tail of the soil nail 2, and the fastener 8 fixes the supporting vertical frames 401 and the supporting horizontal frames 402 on the slope 1. The supporting longitudinal frames and the supporting horizontal frames 402 of the steel mesh 3 frame are arranged in a staggered manner to form a rectangular frame structure. The soil nail 2 is located between the intersection points, and the supporting grid 4 and the steel mesh 3 are fastened to the surface of the slope 1 through the fastener 8 at the tail of the soil nail 2, which can form a supporting effect on the steel mesh 3, improve the stability of the slope 1, and effectively prevent the slope 1 from becoming unstable and landsliding.

[0045] In this embodiment, as Figure 2 and Figure 3 , the supporting vertical frame 401 includes two vertically arranged vertical bars 403 arranged at intervals, and the supporting horizontal frame 402 includes two horizontally arranged horizontal bars 404 arranged at intervals. The tail of the soil nail 2 is simultaneously located between the two vertical bars 403 and the two horizontal bars 404. The fastener 8 abuts against the outer end faces of the two horizontal bars 404 to fix the supporting grid 4 on the slope 1.

[0046] In this embodiment, the fastener 8 includes abutting columns 801 welded and fixed on the upper and lower sides of the soil nail 2. The abutting columns 801 are parallel to the soil nail 2. The end parts of the two abutting columns 801 respectively abut against the outer surfaces of the two horizontal bars 404. The fastener 8 is welded and fixed after the soil nail 2, the steel mesh 3 and the supporting grid 4 are built, connecting the soil nail 2, the steel mesh 3 and the supporting grid 4 into a whole. In other embodiments, a threaded section can also be opened at the tail of the soil nail 2, and a fastener 8 in the shape of a disc or the like is used, and the fastener 8 is threadedly connected to the tail of the soil nail 2 and fastens the steel mesh 3 and the supporting grid 4.

[0047] The concrete layer 5 is arranged on the slope surface 101 through the shotcrete process and covers the supporting grid 4. At least one group of supporting horizontal frames 402 is provided on the part of the supporting vertical frame 401 extending to the slope top 102. An anchor 9 is vertically arranged at the slope top 102 to fix the supporting horizontal frame 402 and the supporting vertical frame 401 located at the slope top 102 on the slope top 102. The anchor 9 can be a soil nail 2 or other anchor rod structures. In this embodiment, an anchoring hole is opened at the slope top 102, the anchor 9 is an anti-floating anchor rod, and an anti-floating disc 901 is fixedly sleeved on the anti-floating anchor rod. The anti-floating disc 901 is distributed in the anchoring hole, and a number of through holes 902 penetrating up and down are opened on the anti-floating disc 901. The anti-floating anchor rod and the anti-floating disc 901 can effectively resist the upward buoyancy force, which is suitable for the vertical anchoring situation and the miscellaneous fill soil layer structure with strong water permeability in this embodiment.

[0048] Further, considering that there may be interference problems between the anchor 9 and the soil nail 2, such as Figure 3 , the anchors 9 are distributed on both sides of the support vertical frame 401, and the anchors 9 and the soil nails 2 are arranged alternately along the length direction of the slope 1.

[0049] The waterproof platform 6 is built or cast on the slope top 102 and covers the support cross frame 402 on the slope top 102 to integrate the support structure with the slope top 102. Since there are often vegetation roots and loose soil in the miscellaneous filling layer, it is easy to form a water seepage channel. The water retaining platform forms a physical barrier on the slope top 102, which can prevent surface water from seeping into the slope 1, effectively control the entry of water into the miscellaneous filling layer, and improve the anti-seepage ability of the slope 1. The steel mesh 3 and the support vertical frame 401 extend upward to the slope top 102 and are fixedly connected through the support cross frame 402 and the anchor 9. Moreover, the support structure is integrated with the slope top 102 through the water retaining platform, enhancing the integrity and stiffness of the soil nail 2 wall structure, being able to better disperse and bear various stresses on the slope 1, effectively coping with the problem of uneven soil strength caused by heterogeneous substances such as brick slag and construction waste in the miscellaneous filling layer, and improving the stability and safety of the slope 1.

[0050] Further, the concrete layer 5 extends upward to the slope top 102 and is connected to the water retaining platform. The concrete layer 5 and the water retaining platform are an integral casting structure. Specifically, although the concrete layer 5 is formed by the shotcrete process and the water retaining platform is formed by building or formwork casting, the concrete layer 5 can extend upward to the water retaining platform. Before the concrete of the two solidifies, the concrete of the two is connected into a continuous integral structure to form a continuous waterproof barrier, which can effectively control the entry of water into the miscellaneous filling layer and improve the anti-seepage ability of the slope 1.

[0051] Further, a drainage channel 10 is dug along the length direction of the slope bottom 103 of the slope 1 for centralized drainage.

Claims

1. A soil nail wall slope support structure, characterized in that: It includes a slope (1), soil nails (2), a steel mesh (3), a support grid (4), a concrete layer (5), and a waterproof platform (6); A drainage pipe (7) is horizontally arranged in the slope (1), and one end of the drainage pipe (7) passes through the slope surface (101) and is connected to the outside world; The soil nails (2) are provided in multiple groups, the soil nails (2) are vertically anchored in the slope surface (101), and the tails of the soil nails (2) extend outside the slope surface (101); The steel mesh (3) is laid on the slope surface (101), and the upper part of the steel mesh (3) extends to the slope top (102) and is laid horizontally on the surface of the slope top (102) after being bent; The support grid (4) comprises a support vertical frame (401) and a support horizontal frame (402); The support vertical frames (401) are laid on the steel mesh (3) at intervals in a vertical direction, and the upper portion of the support vertical frames (401) extends to the top of the slope (102) and is laid horizontally on the steel mesh (3) at the top of the slope (102) after being bent; The supporting horizontal frames (402) are laid on the supporting vertical frames (401) at intervals horizontally, and are staggered with the supporting vertical frames (401) to form a rectangular grid structure; The tail of the soil nail (2) is located at the intersection of the supporting vertical frame (401) and the supporting horizontal frame (402), and a fastener (8) is provided at the tail of the soil nail (2), and the fastener (8) fixes the supporting vertical frame (401) and the supporting horizontal frame (402) on the slope (1); The concrete layer (5) is arranged on the slope surface (101) and covers the support grid (4); The portion of the support vertical frame (401) extending to the slope top (102) is provided with at least one set of support horizontal frames (402); The slope top (102) is vertically provided with anchoring pieces (9) for fixing the supporting horizontal frame (402) and the supporting vertical frame (401) located on the slope top (102) to the slope top (102); The waterproof platform (6) is arranged on the top of the slope (102) and covers the supporting horizontal frame (402) of the top of the slope (102).

2. The soil nail wall slope support structure according to claim 1, characterized in that: The concrete layer (5) extends upward to the top of the slope (102) and is connected to the water retaining platform. The concrete layer (5) and the water retaining platform are an integrally cast structure.

3. A soil nailing wall slope support structure according to claim 1, characterized in that: The supporting vertical frame (401) includes two vertical bars (403) arranged at intervals, and the supporting horizontal frame (402) includes two horizontal bars (404) arranged at intervals. The tail of the soil nail (2) is located between the two vertical bars (403) and the two horizontal bars (404). The fastener (8) abuts against the outer end surfaces of the two horizontal bars (404) to fix the supporting grid (4) on the slope (1).

4. A soil nail wall slope support structure according to claim 3, characterized in that: The fastener (8) comprises abutment columns (801) fixed on the upper and lower sides of the soil nail (2), the abutment columns (801) are parallel to the soil nail (2), and the ends of the two abutment columns (801) respectively abut against the outer surfaces of the two transverse bars (404).

5. The soil nail wall slope support structure according to claim 1, characterized in that: The slope top (102) is provided with an anchor hole, the anchor member (9) is an anti-floating anchor rod, an anti-floating disc (901) is fixedly mounted on the anti-floating anchor rod, the anti-floating disc (901) is distributed in the anchor hole, and a plurality of through-flow holes (902) are provided on the anti-floating disc (901) that are connected vertically.

6. A soil nail wall slope support structure according to claim 1, characterized in that: The anchor fittings (9) are distributed on both sides of the supporting vertical frame (401), and the anchor fittings (9) and the soil nails (2) are arranged in a staggered manner along the length direction of the slope (1).

7. A soil nailing wall slope support structure according to any one of claims 1 to 6, characterized in that: A drainage channel (10) is arranged at the bottom (103) of the slope (1).

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