A reinforced mesh layered rolling retaining wall structure and its construction method

Abstract

The present invention relates to the technical field of retaining walls, and specifically relates to a reinforced mesh layered rolling retaining wall structure and its construction method. The retaining wall structure includes: a main body, which is composed of a wall body and a base. A heel plate is provided at the rear end of the wall body corresponding to the base. A first slope is provided between the top of the heel plate and the rear part of the wall body, and a hinge groove is horizontally opened on the surface of the middle part of the first slope; a soil pressing plate, which is inclined and arranged above the heel plate and is matched with the hinge groove through the bottom end. A hydrophobic filler is provided between the soil pressing plate and the wall body; an anchoring reinforcement mesh, which is composed of multiple anchor bars. Each anchor bar is respectively connected to the top end of the soil pressing plate and horizontally extends to the side away from the wall body. The soil pressing plate of the present invention is a preliminary soil retaining component and is adapted to the slope of the hillside soil surface, while the main body is the main soil retaining component. The hydrophobic filler filled between the two serves as a buffer zone to absorb and decompose the internal pressure brought by the angle change of the soil pressing plate, thereby avoiding the displacement of the main body and prolonging the service life of the structure.

Description

Technical Field

[0001] The present invention relates to the technical field of retaining walls, and particularly relates to a reinforced mesh layered rolling retaining wall structure and a construction method thereof. Background Art

[0002] A retaining wall is a structure that supports the embankment fill or the slope soil mass to prevent the fill or the soil mass from deforming and becoming unstable. Most of the existing retaining walls adopt reinforced concrete cantilever retaining walls. However, when the bearing capacity of the foundation bearing stratum is low or it is backfill soil, the foundation bearing capacity of the relatively high retaining wall of this structure cannot meet the requirements, and there are potential safety hazards. Summary of the Invention

[0003] The present invention provides a reinforced mesh layered rolling retaining wall structure, in which the soil pressing plate is a preliminary soil retaining component and is adapted to the slope of the surface of the slope soil mass, while the main body is the main soil retaining component, and the hydrophobic filler filled between the two serves as a buffer zone to absorb and decompose the internal pressure brought by the angle change of the soil pressing plate, thereby avoiding the displacement of the main body and prolonging the service life of the structure.

[0004] In order to achieve the above object, the present invention provides the following technical solution: A reinforced mesh layered rolling retaining wall structure, which includes: a main body, the main body is composed of a wall body and a base, the base is provided with a toe plate corresponding to the front end of the wall body, and a heel plate corresponding to the rear end of the wall body, a first slope is provided between the top of the heel plate and the rear part of the wall body, and a hinge groove is horizontally opened on the surface of the middle part of the first slope; a soil pressing plate, the soil pressing plate is obliquely arranged above the heel plate and is matched with the hinge groove through the bottom end, a hydrophobic filler is arranged between the soil pressing plate and the wall body, and a vegetation layer is arranged on the top of the hydrophobic filler; an anchoring steel mesh, the anchoring steel mesh is composed of multiple anchor bars, and each of the anchor bars is respectively connected to the top end of the soil pressing plate and horizontally extends to the side away from the wall body.

[0005] Preferably, the soil pressing plate is spliced by a plurality of precast plates, and circular inserting bars are arranged along the edges at the bottom of each of the precast plates, and circular inserting grooves are arranged along the edges at the top of each of the precast plates. Two adjacent precast plates are hinged and matched through the circular inserting bars and the circular inserting grooves.

[0006] Preferably, the anchoring steel mesh is arranged in multiple layers, and each of the anchoring steel meshes is respectively fixedly connected to the top of the corresponding precast plate.

[0007] Preferably, horizontal support layers are respectively arranged in the hydrophobic filler corresponding to the tops of each of the precast plates.

[0008] Preferably, a second slope is provided between the top of the toe slab and the wall body, and anchor holes perpendicular to the surface of the second slope are provided through the base; an anchor pipe extending downward from the base is provided in the anchor hole, the top end of the anchor pipe is fixedly connected to the second slope, and an anchor block is provided at the bottom end.

[0009] Preferably, a construction method includes the following steps:

[0010] Step 1, trim the slope surface of the mountain slope soil body, and level the foundation pit groove along the bottom of the slope;

[0011] Step 2, sequentially lay several prefabricated main bodies into the base groove, and make each main body arranged neatly along the length direction by filling the gap between the filling base and the foundation pit groove;

[0012] Step 3, drill a channel along the anchor hole to the bottom of the mountain slope soil body, and insert the anchor pipe along the channel;

[0013] Step 4, install the soil pressing plate, make the soil pressing plate fit with the surface of the mountain slope soil body by filling hydrophobic filler, and then anchor the soil pressing plate through anchor bars to form an anchor reinforcement mesh;

[0014] Step 5, lay a vegetation layer on the top of the hydrophobic filling.

[0015] Preferably, in the step 3, after drilling, high-pressure pump water is flushed through the anchor pipe to the bottom of the mountain slope soil body, then the slurry is pumped out by a water pump to form an anchoring space, and finally concrete is pumped into the anchoring space through the anchor pipe, and the anchor pipe is anchored to the second inclined plane.

[0016] Preferably, in the step 4, the soil pressing plates are installed in layers and multiple times. After the assembly of each layer of precast slab, hydrophobic filler and a horizontal support layer are filled in sequence until it is flush with the top of the precast slab and then gravity compaction is carried out. The horizontal support layer is taken from the mountain slope soil body.

[0017] The beneficial effects of the present invention are as follows: The soil pressing plate is a preliminary soil retaining component and is adapted to the slope of the hillside soil body surface, while the main body is the main soil retaining component, and the hydrophobic filler filled between the two serves as a buffer zone. When the hillside soil body undergoes flow deformation, the inclination angle of the soil pressing plate changes. At this time, the hydrophobic filler absorbs and decomposes the extrusion force of the soil pressing plate through stress deformation. The soil pressing plate is composed of multiple precast plates spliced together. During the construction process, the dependence on large machinery can be reduced, and the adjustment of the size and shape of the soil pressing plate is more flexible and convenient. Each anchor bar extends into the hillside soil body by passing through the precast plate, thereby improving the fixing force of each precast plate. The horizontal support layer is used to shape the top of each layer of hydrophobic filler, thereby improving the horizontal support force of the hydrophobic filler between the soil pressing plate and the wall body. The concrete solidified in the anchoring space forms an integral structure with the anchor pipe and the anchor hole. By using the guidance of the anchor pipe, the anchoring effect between the main body and the hillside soil body can be achieved through the form of concrete pouring, effectively avoiding the problem of the main body shifting. The soil pressing plates installed in layers can adaptively fit the surface of the hillside soil body. After each layer of precast plate is in place, the hydrophobic filler and the horizontal support layer are subjected to gravity rolling by a rolling device, so that each precast plate is in close contact with the hillside soil body, avoiding internal landslides of the hillside soil body caused by voids and effectively extending the service life of the slope protection. The anchor net extends horizontally into the hillside soil body, thereby increasing the lateral fixing tension of each precast plate and making the overall soil pressing plate more stable. In addition, during the process of terrain change, the spliced soil pressing plate can change locally according to the situation, thereby avoiding the overall displacement of the soil pressing plate and reducing the workload of later repair work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] In the figure: 1, wall body; 2, base; 3, toe slab; 4, heel slab; 5, first slope; 6, hinge groove; 7, hydrophobic filler; 8, vegetation layer; 9, anchor bar; 10, precast plate; 11, round insert; 12, round slot; 13, horizontal support layer; 14, second slope; 15, anchor pipe; 16, anchor block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the scope of protection of the present invention.

[0022] According to Figure 1 As shown, a reinforced mesh layered rolling retaining wall structure includes: a main body, which is composed of a wall body and a base 2. The base 2 is provided with a toe plate 3 corresponding to the front end of the wall body 1, and a heel plate 4 corresponding to the rear end of the wall body 1. There is a first slope 5 between the top of the heel plate 4 and the rear part of the wall body 1, and an articulated groove 6 is horizontally opened on the middle surface of the first slope 5; a soil pressing plate, which is inclined above the heel plate 4 and is matched with the articulated groove 6 through the bottom end. There is a hydrophobic filler 7 between the soil pressing plate and the wall body 1, and a vegetation layer 8 is provided on the top of the hydrophobic filler; an anchor reinforcement mesh, which is composed of multiple anchor bars 9, and each of the anchor bars 9 is respectively connected to the top end of the soil pressing plate and horizontally extends away from the wall body 1.

[0023] In this structure, the soil pressing plate is a preliminary soil retaining component and is adapted to the slope of the hillside soil body surface, while the main body is the main soil retaining component, and the hydrophobic filler 7 filled between the two serves as a buffer zone. When the hillside soil body undergoes flow deformation, the inclination angle of the soil pressing plate changes. At this time, the hydrophobic filler 7 absorbs and decomposes the extrusion force of the soil pressing plate through stress deformation.

[0024] Among them, the soil pressing plate is composed of multiple precast plates 10 spliced together, and circular insertion bars 11 are provided along the edges at the bottom of each precast plate 10, and circular insertion slots 12 are provided along the edges at the top. Adjacent two precast plates 10 are articulated and matched through the circular insertion bars 11 and the circular insertion slots 12. The split soil pressing plate can reduce the dependence on large machinery during the construction process and make the adjustment of the size and shape of the soil pressing plate more flexible and convenient.

[0025] The anchor reinforcement mesh is arranged in multiple layers, and each anchor reinforcement mesh is fixedly connected to the top of the corresponding precast plate 10. In this structure, each anchor bar extends into the hillside soil body by passing through the precast plate 10 to improve the fixing force of each precast plate 10.

[0026] Horizontal support layers 13 are respectively provided in the hydrophobic filler 7 corresponding to the tops of each precast plate 10. The horizontal support layers 13 are used to shape the top of each layer of hydrophobic filler 7, thereby improving the horizontal support force of the hydrophobic filler 7 between the soil pressing plate and the wall body 1.

[0027] A second slope 14 is provided between the top of the toe slab 3 and the wall body 1, and anchor holes perpendicular to the surface of the second slope 14 are provided through the base 2; an anchor pipe 15 extending downward from the base 2 is provided in the anchor holes, the top end of the anchor pipe 15 is fixedly connected to the second slope 14, and an anchor block 16 is provided at the bottom end.

[0028] With the guidance of the anchor pipe 15, the anchoring effect between the main body and the hillside soil can be achieved through the form of concrete pouring for this structure.

[0029] A construction method includes the following steps:

[0030] Step 1: Trim the slope surface of the hillside soil and level the foundation pit along the bottom of the slope.

[0031] Step 2: Lay several precast main bodies into the foundation pit in sequence, and make each main body arranged neatly along the length direction by filling the gap between the base and the foundation pit.

[0032] Step 3: Drill a channel along the anchor hole to the bottom of the hillside soil and insert the anchor pipe 15 along the channel; after the channel drilling is completed, high-pressure water is also pumped through the anchor pipe 15 to wash the bottom of the hillside soil, and then the slurry is pumped out by a water pump to form an anchoring space. Finally, concrete is pumped into the anchoring space through the anchor pipe 15, and the anchor pipe 15 is anchored to the second inclined surface.

[0033] In this step, the concrete solidified in the anchoring space forms an integral structure with the anchor pipe 15 and the anchor hole, thereby improving the anchoring force of the anchor pipe 15 and effectively avoiding the problem of the main body displacement.

[0034] Step 4: Install the soil pressing plate, make the soil pressing plate fit the surface of the hillside soil by filling the hydrophobic filler 7, and then anchor the soil pressing plate through the anchor bars 9 to form an anchored reinforcement mesh; among them, the soil pressing plate is installed in multiple layers. After the assembly of each layer of precast slab 10, the hydrophobic filler 7 and the horizontal support layer 13 are filled in sequence until it is flush with the top of the precast slab 10 and then gravity compaction is carried out. The horizontal support layer 13 is taken from the hillside soil.

[0035] In this step, the soil pressing plates installed in layers can adaptively fit the surface of the hillside soil. When each layer of precast slab 10 is in place, the hydrophobic filler 7 and the horizontal support layer 13 are subjected to gravity rolling by a rolling device, so that each precast slab 10 is in close contact with the hillside soil, avoiding internal landslides of the hillside soil caused by voids and effectively extending the service life of the slope protection. The anchored mesh extends horizontally into the hillside soil, thereby increasing the lateral fixing tension of each precast slab 10 and making the overall soil pressing plate more stable. In addition, during the change of the terrain, the assembled soil pressing plate can change locally according to the situation, thereby avoiding the overall displacement of the soil pressing plate and reducing the workload of later repair work.

[0036] Step Five: Lay a vegetation layer 8 on the top of the hydrophobic fill to protect the structure at the top of the retaining wall and avoid the problem of soil filling loss.

[0037] As mentioned above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. Construction method of a reinforced mesh layered rolling retaining wall structure, the reinforced mesh layered rolling retaining wall structure comprising: A main body, the main body being composed of a wall body and a base (2), the base (2) being provided with a toe slab (3) corresponding to the front end of the wall body (1), and a heel slab (4) corresponding to the rear end of the wall body (1), a first slope (5) being provided between the top of the heel slab (4) and the rear part of the wall body (1), and a hinge groove (6) being horizontally opened on the surface of the middle part of the first slope (5); A soil pressing plate, the soil pressing plate being obliquely arranged above the heel slab (4) and being matched with the hinge groove (6) through the bottom end, a hydrophobic filler (7) being provided between the soil pressing plate and the wall body (1), and a vegetation layer (8) being provided on the top of the hydrophobic filler; An anchoring steel mesh, the anchoring steel mesh being composed of a plurality of anchor bars (9), each of the anchor bars (9) being respectively connected to the top end of the soil pressing plate and horizontally extending to the side away from the wall body (1); The soil pressing plate is spliced by a plurality of prefabricated plates (10), and circular insertion bars (11) are arranged along the edges of the bottoms of the prefabricated plates (10), and circular insertion slots (12) are arranged along the edges of the tops, and two adjacent prefabricated plates (10) are hinged and matched through the circular insertion bars (11) and the circular insertion slots (12); The anchoring steel mesh is arranged in multiple layers, and each of the anchoring steel meshes is respectively fixedly connected to the top of the corresponding prefabricated plate (10); Horizontal support layers (13) are respectively arranged in the hydrophobic filler (7) corresponding to the tops of the prefabricated plates (10); A second slope (14) is provided between the top of the toe slab (3) and the wall body (1), and anchor holes perpendicular to the surface of the second slope (14) are provided through the base (2); an anchor pipe (15) extending downward from the base (2) is arranged in the anchor holes, the top end of the anchor pipe (15) is fixedly connected to the second slope (14), and an anchor block (16) is arranged at the bottom end; It is characterized by including the following steps: Step 1: Trim the slope surface of the mountain slope soil body, and level the foundation pit groove along the bottom of the slope surface; Step 2: Lay a number of prefabricated main bodies into the base layer groove in sequence, and make each main body arranged neatly along the length direction by filling the gaps between the base and the foundation pit groove; Step 3: Drill a channel along the anchor hole to the bottom of the mountain slope soil body, and insert the anchor pipe (15) along the channel; Step 4: Install the soil pressing plate, and make the soil pressing plate fit with the surface of the mountain slope soil body by filling the hydrophobic filler (7), and then anchor the soil pressing plate through the anchor bars (9) to form an anchoring steel mesh; Step 5: Lay a vegetation layer (8) on the top of the hydrophobic filler.

2. The construction method according to claim 1, characterized in that: In the third step, after drilling, high-pressure pump water is flushed to the bottom of the mountain slope soil body through the anchor pipe (15), then the slurry is pumped out by a water pump to form an anchoring space, and finally concrete is pumped into the anchoring space through the anchor pipe (15), and the anchor pipe (15) is anchored to the second inclined surface.

3. The construction method according to claim 1, wherein: In the fourth step, the soil pressing plate is installed in multiple layers. After the assembly of each layer of precast slab (10), hydrophobic filler (7) and horizontal support layer (13) are filled in sequence until it is flush with the top of the precast slab (10), and then gravity compaction is carried out. The horizontal support layer (13) is taken from the soil on the hillside.

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