Reinforced soil protective barrier linear corner wrapping structure

Abstract

The utility model provides a reinforced soil protective barrier linear corner wrapping structure which comprises at least two structural layers formed by a geogrid wrapping soil bag layer and compacted soil, each structural layer is provided with a linear corner part, and the linear corner parts are arranged on the upper portion and the lower portion of the structural layers respectively. The geogrid structure is characterized in that geogrids are laid on the two side faces of the linear corner part respectively, at least two layers of geogrids are laid at the corner of the linear corner part independently, and the geogrids laid on the two side faces of the linear corner part are connected with the two layers of geogrids laid at the corner independently. The flatness and wrapping performance of the reinforced soil protective barrier corner can be effectively controlled, the construction efficiency is improved, meanwhile, the cost is reduced, and the overall stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of geogrid reinforced soil laying, and specifically relates to a straight-angle wrapping structure for a reinforced soil protection barrier. Background Technique

[0002] The reinforced soil protection barrier is mainly used to buffer the lateral impact force generated by an explosion during an explosion, absorb the explosion energy, and protect nearby personnel and buildings. It is a flexible structure with geogrids laid in the soil mass.

[0003] The reinforced soil protection barrier has a wide range of applications in many fields. When constructing the corner, special attention needs to be paid to the control of flatness to ensure the overall effect and use safety of the barrier. However, during the construction process, only manual control of flatness is relied on, and it is difficult to ensure the flatness of the geogrids at the corner, resulting in the exposure of soil bags and affecting the integrity of the corner wrapping.

[0004] To meet the integrity of the wrapping, adjustments are usually made repeatedly, which is laborious and material-consuming. While increasing the construction cost, it is difficult to achieve the desired effect; if not handled properly, it will affect the stability of the reinforced soil protection barrier.

[0005] Therefore, how to design a straight-angle wrapping structure for a reinforced soil protection barrier, which can effectively control the flatness and wrapping property of the corner of the reinforced soil protection barrier, improve the construction efficiency while reducing the cost, and improve the overall stability. This is an urgent technical problem to be solved in the current technical field. Content of the Utility Model

[0006] The utility model provides a straight-angle wrapping structure for a reinforced soil protection barrier to solve the above problems and deficiencies existing in the prior art, which can effectively control the flatness and wrapping property of the corner of the reinforced soil protection barrier, improve the construction efficiency while reducing the cost, and improve the overall stability.

[0007] To achieve the above object of the utility model, the utility model adopts the following technical solutions:

[0008] A straight-angle wrapping structure for a reinforced soil protection barrier includes a structural layer formed by wrapping a soil bag layer and compacted soil with geogrids. The structural layer includes at least two layers arranged up and down, and each layer of the structural layer has a straight-angle corner part. It is characterized in that geogrids are respectively laid on the two side surfaces of the straight-angle corner part, at least two layers of geogrids are separately laid at the corner of the straight-angle corner part, and the geogrids laid on the two side surfaces of the straight-angle corner part are connected to the two layers of geogrids separately laid at the corner.

[0009] Improvement to the above technical solution: The geogrid wrapped by the straight corner part of each structural layer includes a first outer grid A, a second outer grid B, a first additional paving grid C and a second additional paving grid D. The length direction of the first outer grid A is perpendicular to the left side surface of the straight corner part, and one end of it is laid flat on the bottom surface of the straight corner part, and the remaining wrapped part is wrapped upward around the left side surface and the top surface of the straight corner part; the length direction of the second outer grid B is perpendicular to the right side surface of the straight corner part, and one end of it is laid flat on the bottom surface of the straight corner part, and the remaining wrapped part is wrapped upward around the right side surface and the top surface of the straight corner part. The first outer grid A and the second outer grid B overlap at the bottom surface of the straight corner part; the first additional paving grid C and the second additional paving grid D are arranged side by side on the left and right sides of the bisector of the straight corner part. One end of the first additional paving grid C is laid flat on the bottom surface of the straight corner part, and the remaining wrapped part is bent upward to wrap the left side surface, the right side surface and the top surface of the upper corner of the straight corner part. One end of the second additional paving grid D is laid flat on the bottom surface of the straight corner part, and the remaining wrapped part is bent upward to wrap the right side surface, the left side surface and the top surface of the upper corner of the straight corner part. The first additional paving grid C and the second additional paving grid D overlap at the corner of the straight corner part.

[0010] Improvement to the above technical solution: The first outer grid A and the second outer grid B overlap at the top surface of the straight corner part. The first additional paving grid C and the second additional paving grid D overlap at the top surface of the straight corner part. The first outer grid A and the second outer grid B located at the top surface of the straight corner part and the first additional paving grid C and the second additional paving grid D located at the top surface of the straight corner part are overlapped and connected with a connecting rod and fixed with U-shaped nails.

[0011] Further improvement to the above technical solution: The first outer grid A and the second outer grid B located at the bottom surface of the straight corner part and the first additional paving grid C and the second additional paving grid D located at the bottom surface of the straight corner part are overlapped and connected with a connecting rod and fixed with U-shaped nails.

[0012] Further improvement to the above technical solution: The respective cutting lengths of the first outer grid A and the second outer grid B = design length + layer spacing + wrapping length + overlapping length, and the design length is the distance from the central axis of the reinforced soil protection barrier to the slope surface.

[0013] Further improvement to the above technical solution: The wrapping length is 1 - 1.5 meters, and the overlapping length is 1 - 1.5 meters.

[0014] Further improvement of the above technical solution: The lengths of the first additional paving grid C and the second additional paving grid D are both 3.5 - 4 meters.

[0015] The utility model has the following advantages and positive effects compared with the prior art:

[0016] 1. In the utility model, at least two layers of geogrids are separately paved at the corner of the straight-line corner part. The double-layer wrapping can effectively control the flatness and wrapping property of the corner of the reinforced soil protection barrier, achieving ideal flatness and wrapping requirements, and improving the overall performance and aesthetics of the reinforced soil protection barrier;

[0017] 2. The structure design of the utility model is reasonable, which can make the operation in the construction process simpler and faster, improve the construction efficiency, and enhance the overall stability;

[0018] 3. The utility model has a low rework rate and low labor cost;

[0019] 4. The utility model can adapt to different slope rates and can achieve the same effect in the face of different construction environments and conditions.

[0020] In summary, the utility model has significant advantages in improving the corner flatness and protection effect, improving the construction efficiency, reducing costs, repeatability, etc. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the flat-laying state of the first outer grid A and the second outer grid B in a straight-line corner wrapping structure of a reinforced soil protection barrier of the utility model;

[0022] Figure 2 It is a schematic diagram of the first outer grid A and the second outer grid B in a straight-line corner wrapping structure of a reinforced soil protection barrier of the utility model after flat-laying and adding a geotextile bag layer;

[0023] Figure 3 It is a schematic diagram of the first additional paving grid C and the second additional paving grid D in a straight-line corner wrapping structure of a reinforced soil protection barrier of the utility model after flat-laying and adding a geotextile bag layer;

[0024] Figure 4 It is a schematic diagram of first flat-laying the first outer grid A and the second outer grid B and then flat-laying the first additional paving grid C and the second additional paving grid D in a straight-line corner wrapping structure of a reinforced soil protection barrier of the utility model;

[0025] Figure 5 It is a schematic diagram of three layers of geotextile bag layers after the first additional paving grid C is separately wrapped in a straight-line corner wrapping structure of a reinforced soil protection barrier of the utility model;

[0026] Figure 6 This is a schematic diagram of the three - layer soil bag layer in the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model after the second laid - down grid D is wrapped alone;

[0027] Figure 7 This is a three - dimensional schematic diagram of the three - layer soil bag layer in the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model after both the first laid - down grid C and the second laid - down grid D are laid;

[0028] Figure 8 This is a schematic diagram of the left side of the three - layer soil bag layer in the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model after both the first laid - down grid C and the second laid - down grid D are laid;

[0029] Figure 9 This is a schematic diagram of the single - layer soil bag layer in the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model after the first outer grid A is wrapped alone;

[0030] Figure 10 This is a schematic diagram of the single - layer soil bag layer in the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model after the second outer grid B is wrapped alone;

[0031] Figure 11 This is a three - dimensional schematic diagram of the first outer grid A and the second outer grid B wrapped around the three - layer soil bag layer in the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model;

[0032] Figure 12 This is a schematic diagram of the left side of the first outer grid A and the second outer grid B wrapped around the three - layer soil bag layer in the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model;

[0033] Figure 13 This is a three - dimensional view of the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model after all wrapping is completed;

[0034] Figure 14 This is a schematic diagram of the left side of the straight - corner wrapping structure of a reinforced soil protection barrier of the present utility model after all wrapping is completed.

[0035] In the figure: 1. Soil bag layer I; 1.1. The corner of soil bag layer I; 2. Soil bag layer II; 2.1. The corner of soil bag layer II; 3. Soil bag layer III; 3.1. The corner of soil bag layer III.

[0036] Explanation of the position of capital letters in the attached drawings: 1. A in the drawings represents the first outer grille A, B in the drawings represents the second outer grille B, C in the drawings represents the first additional grille C, and D in the drawings represents the second additional grille D; 2. The meaning of the order of two or more letters from left to right in the drawings is that the grilles represented by each letter overlap, and the grilles represented by the letters in the front are located above the grilles represented by the letters in the back. For example, AB in the drawings represents that the first outer grille A overlaps with the second outer grille B, and the first outer grille A is located above the second outer grille B. The meanings of other letter arrangements are similar. DETAILED DESCRIPTION

[0037] See also Figures 1 - 14 The utility model provides an embodiment of a linear corner wrapping structure of a reinforced soil protection barrier, including a structural layer formed by geogrids wrapping earthbag layers and compacted soil. In this embodiment, the structural layers are 3 layers (including earthbag layer I 1, earthbag layer II 2 and earthbag layer III 3), and each structural layer has a linear corner portion. Geogrids are laid on both sides of the linear corner portion, and at least two layers of geogrids are laid separately at the corners on the linear corner portion (including earthbag layer I corner 1.1, earthbag layer II corner 2.1 and earthbag layer III corner 3.1). The geogrids laid on both sides of the linear corner portion are connected to the two layers of geogrids laid separately at the corners.

[0038] Specifically: the geogrid wrapped in the linear corner of each structural layer (earthbag layer I 1, earthbag layer II 2 or earthbag layer III 3) includes a first outer grid A, a second outer grid B, a first additional grid C and a second additional grid D. The length direction of the first outer grid A is perpendicular to the left side of the linear corner, and one end thereof is laid flat on the bottom surface of the linear corner, and the remaining reversed part is reversed upward on the left side and top surface of the linear corner. The length direction of the second outer grid B is perpendicular to the right side of the linear corner, and one end thereof is laid flat on the bottom surface of the linear corner, and the remaining reversed part is reversed upward on the right side and top surface of the linear corner, and the first outer grid A and the second outer grid B overlap at the bottom surface of the linear corner. The first additional grid C and the second additional grid D are arranged side by side on the left and right sides of the bisector of the straight corner portion, one end of the first additional grid C is laid flat on the bottom surface of the straight corner portion, and the remaining reversed portion is bent upward to reverse the left side, right side and top surface of the upper corner of the straight corner portion. One end of the second additional grid D is laid flat on the bottom surface of the straight corner portion, and the remaining reversed portion is bent upward to reverse the right side, left side and top surface of the upper corner of the straight corner portion, and the first additional grid C and the second additional grid D overlap at the corner of the straight corner portion.

[0039] Furthermore, the above-mentioned first outer grille A and the second outer grille B overlap at the top surface of the straight corner portion, the first additional paving grille C and the second additional paving grille D overlap at the top surface of the straight corner portion, the first outer grille A and the second outer grille B located at the top surface of the straight corner portion and the first additional paving grille C and the second additional paving grille D located at the top surface of the straight corner portion are lapped together, connected by connecting rods, and fixed with U-shaped nails.

[0040] Still further, the first outer grille A and the second outer grille B located at the bottom surface of the straight corner portion and the first additional paving grille C and the second additional paving grille D located at the bottom surface of the straight corner portion are lapped together, connected by connecting rods, and fixed with U-shaped nails.

[0041] Yet further, the cutting length of each of the above-mentioned first outer grille A and the second outer grille B = design length + layer spacing + wrapping length + lapping length, and the design length is the distance from the central axis of the reinforced soil protection barrier to the slope surface.

[0042] Preferably, the above-mentioned wrapping length is 1 - 1.5 meters, and the lapping length is 1 - 1.5 meters. The lengths of both the first additional paving grille C and the second additional paving grille D are 3.5 - 4 meters.

[0043] The construction equipment for the straight corner wrapping structure of a reinforced soil protection barrier of the present utility model includes: a tensioning device, a fixing device, and a cutting and lapping tool.

[0044] The specific construction method of the straight corner wrapping structure of a reinforced soil protection barrier of the present utility model includes the following steps:

[0045] ① Cut the grille according to the design. The length of the outer grille (the first outer grille A and the second outer grille B) is the design length (the distance from the central axis of the protection barrier to the slope surface) + layer spacing + 1.0-meter wrapping length + 1.0-meter lapping length; the length of the corner additional paving grille (the first additional paving grille C and the second additional paving grille D) is 3.5 meters.

[0046] ② When laying the grille of the first structural layer, the length direction of the outer grille (the first outer grille A and the second outer grille B) is perpendicular to the slope and placed on the well-compacted foundation, and is connected to the additional paving grille (the first additional paving grille C and the second additional paving grille D) by connecting rods. The length direction is aligned with the upper corner vertex near the slope surface (the distance between the edge of the outer grille and the slope surface = layer spacing / tanα, see Figure 12 ), place the reserved wrapping length part outside the wall line, overlap the two grilles in the width direction by 1 - 2 cm, and then tighten the grille (no wrinkles are allowed) and fix it with U-shaped nails (as shown in Figure 1 )

[0047] ③Lay additional geogrids (the first additional geogrid C and the second additional geogrid D). The center line in the length direction of the additional geogrids is laid along the angular bisector on top, starting from the vertex of the corner of this structural layer and laying inwards for 1.5 meters. The reserved wrapped part outside is placed beyond the vertex. The additional geogrids are cut along the center line to the vertex of the corner of this layer. The additional geogrids are further tightened (no wrinkles are allowed) and fixed with U-shaped nails (as Figure 4 shown).

[0048] ④After the first layer of filling is compacted, bend the additional geogrids (the first additional geogrid C and the second additional geogrid D) upwards along the side line of the protective barrier to the side line of the corner slope surface, then continue to bend along the side line of the slope surface to the other slope surface and then bend upwards to the top of this structural layer. Keep it flat and close to the slope surface during bending and fix it with U-shaped nails (as Figure 13 shown).

[0049] ⑤Bend the outer geogrids (the first outer geogrid A and the second outer geogrid B) upwards along the side line of the protective barrier to the top of this structural layer. Keep it flat and close to the slope surface during bending and fix it with U-shaped nails, and connect it with the additional geogrids (the first additional geogrid C and the second additional geogrid D) with connecting rods (as Figure 13 shown).

[0050] ⑥On both sides of the protective barrier, lay the geogrids (outer geogrids, additional geogrids) of the second structural layer simultaneously. Connect the cut geogrids (outer geogrids, additional geogrids) for the second structural layer with the geogrids (outer geogrids, additional geogrids) reserved on the first structural layer at the slope surface with connecting rods. Tighten the laid geogrids with a tension beam, and at the same time, use wooden wedges or piling soil to keep the tightened geogrids in a taut state. Connect the free ends of the geogrids on both sides of the central axis of the protective barrier with connecting rods.

[0051] ⑦Continue the backfill construction of the next layer of soil, and repeat the above operating procedures until the top of the slope (as Figure 13 , 14 shown).

[0052] During the whole construction process, attention should be paid to the laying quality and fixing condition of the geogrid to ensure that its flatness and wrapping property meet the requirements. At the same time, construction safety should also be noted to avoid the occurrence of accidents.

[0053] Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A reinforced soil protection barrier linear corner wrapping structure, comprising a structural layer formed by geogrids wrapping a soil bag layer and compacted soil, the structural layer having at least two layers arranged up and down, each of the structural layers having a linear corner portion, characterized in that: The geogrids are laid on both side surfaces of the linear corner portion, at least two layers of geogrids are laid separately at the corner on the linear corner portion, and the geogrids laid on both side surfaces of the linear corner portion are connected to the two layers of geogrids laid separately at the corner.

2. The reinforced soil protection barrier straight corner wrapping structure according to claim 1 is characterized in that: The geogrid wrapped by the linear corner portion of each structural layer includes a first outer grid A, a second outer grid B, a first additional grid C and a second additional grid D. The length direction of the first outer grid A is perpendicular to the left side of the linear corner portion, and one end thereof is laid flat on the bottom surface of the linear corner portion, and the remaining reversed portion is reversed upward on the left side and top surface of the linear corner portion; the length direction of the second outer grid B is perpendicular to the right side of the linear corner portion, and one end thereof is laid flat on the bottom surface of the linear corner portion, and the remaining reversed portion is reversed upward on the right side and top surface of the linear corner portion. The first outer grid A and The second outer grid B overlaps at the bottom surface of the straight corner portion; the first additional grid C and the second additional grid D are arranged side by side on the left and right sides of the bisector of the straight corner portion, one end of the first additional grid C is laid flat on the bottom surface of the straight corner portion, and the remaining turned-up portion is bent upward to turn around the left side, right side and top surface of the upper corner of the straight corner portion; one end of the second additional grid D is laid flat on the bottom surface of the straight corner portion, and the remaining turned-up portion is bent upward to turn around the right side, left side and top surface of the upper corner of the straight corner portion; the first additional grid C and the second additional grid D overlap at the corner of the straight corner portion.

3. The reinforced soil protection barrier straight corner wrapping structure according to claim 2 is characterized in that: The first outer grille A and the second outer grille B overlap at the top surface of the straight corner portion, the first additional grille C and the second additional grille D overlap at the top surface of the straight corner portion, the first outer grille A and the second outer grille B at the top surface of the straight corner portion are overlapped with the first additional grille C and the second additional grille D at the top surface of the straight corner portion, connected with connecting rods, and fixed with U-shaped nails.

4. The reinforced soil protection barrier straight corner wrapping structure according to claim 2 or 3, characterized in that: The first outer grille A and the second outer grille B located at the bottom surface of the linear corner portion are overlapped with the first additional grille C and the second additional grille D located at the bottom surface of the linear corner portion, connected by connecting rods, and fixed with U-shaped nails.

5. The reinforced soil protection barrier straight corner wrapping structure according to claim 2 or 3, characterized in that: The cutting length of each of the first outer grid A and the second outer grid B = the designed length + the layer spacing + the reverse length + the overlap length, and the designed length is the distance from the central axis of the reinforced earth protection barrier to the slope surface.

6. The reinforced soil protection barrier straight corner wrapping structure according to claim 4 is characterized in that: The cutting length of each of the first outer grid A and the second outer grid B = the designed length + the layer spacing + the reverse length + the overlap length, and the designed length is the distance from the central axis of the reinforced earth protection barrier to the slope surface.

7. The reinforced soil protection barrier straight corner wrapping structure according to claim 6 is characterized in that: The reverse wrapping length is 1-1.5 meters, and the overlapping length is 1-1.5 meters.

8. The reinforced soil protection barrier straight corner wrapping structure according to claim 2 or 3, characterized in that: The lengths of the first additional grid C and the second additional grid D are both 3.5-4 meters.

9. The reinforced soil protection barrier straight corner wrapping structure according to claim 4 is characterized in that: The lengths of the first additional grid C and the second additional grid D are both 3.5-4 meters.

10. The reinforced soil protection barrier straight corner wrapping structure according to claim 6, characterized in that: The lengths of the first additional grid C and the second additional grid D are both 3.5-4 meters.

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