Slope protection structure for waterfront roadbed and its construction method

Abstract

The present invention discloses a slope protection structure for a waterfront subgrade and its construction method. The slope protection structure is at least used to protect the slope of the waterfront subgrade. The waterfront subgrade includes a reinforced soil-rock mixture layer and a fill subgrade layer placed on the reinforced soil-rock mixture layer. The side of the fill subgrade layer facing the water forms a slope. The slope protection structure includes a rigid slope foundation, a slope protection main body, a first waterproof layer, two fixed columns, and a first tensioning tendon. The rigid slope foundation is fixed on the side of the reinforced soil-rock mixture layer facing the water and is used to support the bottom of the slope. The first waterproof layer is attached to the slope surface and covers the slope surface. The two fixed columns are used to be spaced apart on the slope surface. The first end of the first tensioning tendon is connected to the fixed column, and the second end of the first tensioning tendon passes through the first waterproof layer and is buried in the fill subgrade layer to tension the fixed column. The slope protection main body is laid on the slope surface and its two ends are respectively pressed by the two fixed columns. The bottom of the slope protection main body is supported on the rigid slope foundation.

Description

Technical Field

[0001] The present invention relates to the technical field of subgrade slope design and construction, and particularly to a slope protection structure for a water-adjacent subgrade and a construction method thereof. Background Art

[0002] Before a new road is constructed, road route selection needs to be carried out, which is a very important preliminary preparation work. During the process of road route selection, it is inevitable that the road will be adjacent to water. For example, some sections of the road will inevitably be selected in water-adjacent areas near fish ponds, rivers, lakes, paddy fields and other waters. The water-adjacent areas are usually formed by sediment deposition and belong to water-adjacent soft soil subgrades. Since the water-adjacent soft soil subgrade belongs to poor geology with low strength, it is necessary to consider whether the bearing capacity of the subgrade meets the specification requirements when constructing a road on the water-adjacent soft soil subgrade. A slope protection structure is usually provided at the edge of the water-adjacent soft soil subgrade, and the stability of the slope protection structure is beneficial to improving the bearing capacity of the water-adjacent soft soil subgrade. If the slope protection structure is unstable, it is easily washed away by surface water, which will in turn affect the stability of the water-adjacent soft soil subgrade and also cause safety problems for the road built on the water-adjacent soft soil subgrade.

[0003] In the related art, the slope protection structures involved only adopt simple methods such as stone masonry and shotcrete protection for construction. Although the slope protection structures formed by these methods have certain functions of waterproofing and preventing washing away, during long-term use, the slope protection structures are easily hollowed out under the repeated erosion of rising and falling water, which will in turn cause the water-adjacent soft soil subgrade to be eroded by water, and finally easily cause the instability and collapse of the water-adjacent soft soil subgrade, which poses a huge safety hazard to the road. Of course, not limited to the water-adjacent soft soil subgrade, similar problems also exist in the non-soft soil subgrades adjacent to water. That is to say, similar problems exist in all water-adjacent subgrades.

[0004] How to improve the protection ability of the slope protection structure of the water-adjacent subgrade is an important engineering problem that needs to be urgently researched and solved by those skilled in the art. Summary of the Invention

[0005] The embodiments of the present invention disclose a slope protection structure for a water-adjacent subgrade and a construction method thereof to solve the problem that the protection ability of the slope protection structure in the related art in the background art is poor.

[0006] To solve the above technical problems, the present application provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention discloses a slope protection structure for a waterfront subgrade. The slope protection structure is at least used to protect the slope of the waterfront subgrade. The waterfront subgrade includes a reinforced soil-rock mixture layer provided on a waterfront soft soil layer and a fill subgrade layer placed on the reinforced soil-rock mixture layer. An inclined slope is formed on one side of the fill subgrade layer facing the water; the slope protection structure includes a rigid slope foundation, a slope protection main body, a first waterproof layer, two fixing columns, and a first tensioning tendon.

[0008] The rigid slope foundation is fixed on the waterfront side of the reinforced soil-rock mixture layer and is used to support the bottom of the slope. The first waterproof layer is pasted on the slope surface of the slope and covers the slope surface; the two fixing columns are used to be spaced apart and placed on the slope surface; the first end of the first tensioning tendon is connected to the fixing column, and the second end of the first tensioning tendon passes through the first waterproof layer and is buried in the fill subgrade layer to tension the fixing column.

[0009] The slope protection main body is laid on the slope surface. Both ends of the slope protection main body are respectively pressed by the two fixing columns, and the bottom of the slope protection main body is supported on the rigid slope foundation.

[0010] Optionally, in the above slope protection structure, the slope protection structure further includes a planting soil layer. The planting soil layer is accommodated in the space surrounded by the slope protection main body, the two fixing columns, and the first waterproof layer, and is clamped between the slope protection main body and the first waterproof layer.

[0011] Optionally, in the above slope protection structure, the slope protection main body includes a plurality of protection units. The plurality of protection units are arranged in sequence from the top of the slope surface to the bottom of the slope surface and cover the slope surface. Both ends of each protection unit include pressed edges, and the pressed edges at both ends of each protection unit are respectively pressed and fixed by the two fixing columns.

[0012] Optionally, in the above slope protection structure, each protection unit is provided with a receiving groove. The receiving groove is filled with planting soil. A plurality of through holes are formed in the inner wall of the receiving groove facing the planting soil layer. Plants are planted in the planting soil, and the through holes are used for the roots of the plants to pass through and extend into the planting soil layer.

[0013] Optionally, in the above slope protection structure, the protection unit includes a bottom plate and a groove plate. The bottom plate is pasted on the slope surface, the groove plate is fixed on the bottom plate, and the groove plate and the bottom plate enclose the receiving groove. Both ends of the bottom plate protrude out of the receiving groove respectively to form the pressed edges.

[0014] Optionally, in the above-mentioned slope protection structure, the slot opening of the receiving slot is a horizontal slot so that the planting soil forms a horizontal planting ground at the slot opening, and the multiple protection units form multiple step structures extending from the bottom of the slope to the top of the slope.

[0015] Optionally, in the above-mentioned slope protection structure, the fixed column includes a column body and a clamping protrusion fixed to the side of the column body facing away from the first waterproof layer, the first end of the first tensioning rib is connected to the column body, and the clamping protrusion is clamped together with the pressed edge.

[0016] Optionally, in the above-mentioned slope protection structure, the first tensioning reinforcement includes a main reinforcement and a plurality of diffusion reinforcements, the first end of the main reinforcement is connected to the fixed column, and the second end of the main reinforcement passes through the first waterproof layer and is fixed in the fill roadbed; the first ends of the plurality of diffusion reinforcements are connected to the portion of the main reinforcement located in the fill roadbed, and the second ends of the plurality of diffusion reinforcements extend in the fill roadbed toward the two sides of the main reinforcement that are opposite to each other.

[0017] Optionally, in the above-mentioned slope protection structure, the first ends of the multiple diffusion bars are staggeredly connected to the main bars and are distributed at acute angles to the main bars; and / or, there are multiple first tensioning bars, and the main bars of the multiple first tensioning bars connected to the same fixed column are parallel.

[0018] Optionally, in the above-mentioned slope protection structure, the fixed column is provided with a reinforcement hole, a hanging structure is fixed in the reinforcement hole, the first end of the main reinforcement is engaged with the hanging structure, and the reinforcement hole is filled and fixed with a blocking object.

[0019] Optionally, in the above-mentioned slope protection structure, the hard slope foundation includes outer baffles and inner baffles distributed at intervals, connecting baffles distributed in groups, second tension bars distributed in groups, cast fillers and mixed fillers;

[0020] The inner baffle and the outer baffle are sequentially inserted into the water-facing soft soil layer in the water-facing direction; each group of the connecting baffles includes two connecting baffles that are inserted between the inner baffle and the outer baffle and supported between the inner baffle and the outer baffle, and the two ends of the grouped second tensioning bars are respectively connected to the inner baffle and the outer baffle, and at least one group of the second tensioning bars is provided between the opposite surfaces of the same group of connecting baffles;

[0021] The same group of connecting baffles, the inner baffles and the outer baffles form a first filling space, and the cast filler is filled in the first filling space; a second filling space is formed between two adjacent groups of connecting baffles, and the mixed filler is filled in the second filling space.

[0022] Optionally, in the above-mentioned slope protection structure, a plurality of guide protrusions are fixed at intervals on the opposite surfaces of the inner baffle plate and the outer baffle plate, and the guide protrusions extend along the plug-in direction of the inner baffle plate and the outer baffle plate, and each of the connecting baffle plates is tightly attached to the two opposite guide protrusions and plugged between the inner baffle plate and the outer baffle plate; the two ends of the same group of the second tensioning ribs are respectively connected to the two opposite guide protrusions.

[0023] Optionally, in the above-mentioned slope protection structure, a plurality of reinforcing ribs are fixed to opposite surfaces of the same group of the connecting baffles, and the reinforcing ribs extend along the plug-in direction.

[0024] Optionally, in the above-mentioned slope protection structure, the hard slope foundation further includes a second waterproof layer, which is laid on the bottom of the space between the inner baffle and the outer baffle of the water-adjacent soft soil layer.

[0025] Optionally, in the above-mentioned slope protection structure, the reinforced soil-rock mixture layer includes waste tires, a soil-rock mixture and connecting pieces. The waste tires are distributed in multiple layers, and each layer of the waste tires includes multiple rows of the waste tires. In the vertical direction, the two opposite rows of the waste tires in two adjacent layers are staggered; any two adjacent waste tires are fixedly connected by the connecting pieces, and the soil-rock mixture is filled in the waste tires and in the gaps between the waste tires.

[0026] Optionally, in the above-mentioned slope protection structure, the connecting member is a threaded connecting member, and a plurality of the connecting members are connected between two adjacent waste tires.

[0027] In a second aspect, an embodiment of the present invention discloses a construction method for a slope protection structure of a waterside roadbed, wherein the slope protection structure of the waterside roadbed is the slope protection structure described in the first aspect, and the slope protection structure is used at least to protect the slope of the waterside roadbed, wherein the waterside roadbed includes a reinforced soil-rock mixture layer provided on a waterside soft soil layer and a fill roadbed layer provided on the reinforced soil-rock mixture layer, wherein the side of the fill roadbed layer facing the water forms the inclined slope; the construction method comprises the following steps:

[0028] Constructing the hard slope foundation on the soft soil layer near the water;

[0029] Excavating the area on the water-facing soft soil layer located inside the hard side slope foundation, and laying a reinforced soil-rock mixed layer in the excavated area, with the water-facing side of the hard side slope foundation and the inside of the hard side slope foundation facing away from each other;

[0030] Lay the embankment roadbed on the hard slope foundation layer by layer, and bury the first end of the first tensioning tendon in the embankment roadbed. An inclined slope is formed on the water-facing side of the embankment roadbed.

[0031] Lay the first waterproof layer on the slope surface of the slope, and lay the slope protection main body and the fixing columns on the first waterproof layer so that the bottom of the slope protection main body supports on the hard slope foundation, and both ends of the slope protection main body are respectively pressed by the two fixing columns, and make the first end of the first tensioning tendon pass through the first waterproof layer and tighten the fixing columns.

[0032] The slope protection structure of the water-facing roadbed disclosed in the embodiment of the present invention has the following technical effects:

[0033] The slope protection structure disclosed in the embodiment of the present invention can protect the reinforced soil-rock mixture layer of the water-facing roadbed at the bottom of the water-facing roadbed by implanting a hard slope foundation on the water-facing soft soil layer, and at the same time, protect the embankment roadbed above the reinforced soil-rock mixture layer of the water-facing roadbed through the slope protection structure. In this structure, the two fixing columns are fixed on the slope surface of the slope of the embankment roadbed by the tension of their respective corresponding first tensioning tendons, and then the slope protection main body covering the slope surface is fixed on the slope surface by the two fixing columns tightened by the first tensioning tendon. In this kind of structure, the slope protection structure and the hard slope foundation can respectively protect the reinforced soil-rock mixture layer and the embankment roadbed of the water-facing roadbed. Compared with the prior art in which only simple methods such as stone masonry and shotcrete are used to protect the slope surface, the slope protection structure of the water-facing roadbed disclosed in the embodiment of the present invention can improve the protection effect on the water-facing roadbed, and can better reduce the probability of the water-facing roadbed being washed out, eroded, and collapsed. Description of the Drawings

[0034] Figure 1 is a partial structural schematic diagram of the slope protection structure of the water-facing roadbed disclosed in the embodiment of the present invention in a cross-sectional state;

[0035] Figure 2 is Figure 1 an enlarged schematic diagram of the structure of part A in

[0036] Figure 3 is a connection schematic diagram of the fixing column and the first tensioning tendon involved in the embodiment of the present invention, Figure 3 in which the fixing column is in a cut-away state;

[0037] Figure 4 is a structural schematic diagram of the reinforced soil-rock mixture layer disclosed in the embodiment of the present invention;

[0038] Figure 5It is a partial structural schematic diagram of a rigid slope foundation disclosed in an embodiment of the present invention;

[0039] Figure 6 It is a structural schematic diagram of a protection unit filled with planting soil involved in an embodiment of the present invention;

[0040] Figure 7 It is a structural schematic diagram of a protection unit without planting soil disclosed in an embodiment of the present invention;

[0041] Figure 8 It is a construction method flowchart of a slope protection structure for a waterfront roadbed disclosed in an embodiment of the present invention.

[0042] Explanation of reference numerals:

[0043] 10 - Slope protection structure, 11 - Rigid slope foundation, 111 - Outer baffle, 112 - Inner baffle, 113 - Connecting baffle, 1131 - Grouting hole, 114 - Second tensioning tendon, 115 - Cast-in filling, 116 - Mixed filling, 117 - Guide protrusion, 118 - Reinforcing rib, 119 - Second waterproof layer, 12 - Slope surface protection main body, 121 - Protection unit, 1211 - Bottom plate, 1212 - Groove plate, 1201 - Suppressed edge, 1202 - Perforation, 13 - First waterproof layer, 14 - Fixed column, 141 - Column body, 1411 - Reinforcing bar passing hole, 1412 - Hanging structure, 142 - Pressing protrusion, 15 - First tensioning tendon, 151 - Main bar, 152 - Diffusing bar, 16 - Planting soil layer, 17 - Planting soil, 18 - Plant;

[0044] 20 - Waterfront roadbed, 201 - Slope, 21 - Reinforced soil-rock mixture layer, 211 - Waste tire, 212 - Soil-rock mixture, 213 - Connector, 22 - Filled roadbed layer;

[0045] 30 - Waterfront soft soil layer, 31 - Shore soft soil;

[0046] 40 - Water. Detailed implementation manners

[0047] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0048] The following will detail the technical solutions disclosed in each embodiment of the present application in conjunction with the drawings.

[0049] Please refer to Figures 1 to 8, Embodiments of the present invention disclose a slope protection structure 10 for a waterfront roadbed. The slope protection structure 10 is used to protect the slope 201 of the waterfront roadbed 20. The waterfront roadbed 20 involved in the embodiments of the present invention may include a reinforced soil-rock mixture layer 21 and a fill roadbed layer 22. The reinforced soil-rock mixture layer 21 is provided on the waterfront soft soil layer 30, and the fill roadbed layer 22 is provided on the reinforced soil-rock mixture layer 21. The fill roadbed layer 22 may be a roadbed structure formed by piling up sand and gravel. During the process of road construction, a road surface may be laid on the fill roadbed layer 22. The waterfront side of the fill roadbed layer 22 forms an inclined slope 201. Specifically, the slope 201 may form an acute angle with the road surface. The bottom of the slope 201 is closer to the water area adjacent to the waterfront roadbed 20.

[0050] The slope protection structure 10 disclosed in the embodiments of the present invention includes a rigid slope foundation 11, a slope surface protection main body 12, a first waterproof layer 13, two fixed columns 14, and a first tensioning tendon 15. The number of the first tensioning tendons 15 is multiple.

[0051] The rigid slope foundation 11 is a structure maintained at the bottom front of the waterfront roadbed 20. Specifically, the rigid slope foundation 11 is fixed on the waterfront side of the reinforced soil-rock mixture layer 21, that is, the rigid slope foundation 11 faces the area where water 40 exists in the waterfront soft soil layer 30 (this area can be considered as the shore soft soil 31). The rigid slope foundation 11 is a rigid building body that can prevent the erosion of water 40 in the adjacent water area. During the specific construction process, a local area of the waterfront soft soil layer 30 may be deeply dug to implant the rigid slope foundation 11 into a deeper part of the waterfront soft soil layer 30, thereby improving the stability of the rigid slope foundation and making it not easily washed away or washed off, etc. The rigid slope foundation 11 is also a foundation for supporting the slope 201. The rigid slope foundation 11 can separate the reinforced soil-rock mixture layer 21 of the waterfront roadbed 20 from the water 40, so that the reinforced soil-rock mixture layer 21 is not easily eroded by the water 40. It should be noted that the shore soft soil 31 is a part of the waterfront soft soil layer 30, and another part of the waterfront soft soil layer 30 can be considered to be located below the reinforced soil-rock mixture layer 21 and the rigid slope foundation 11. It should be noted that the part of the waterfront soft soil layer 30 located below the reinforced soil-rock mixture layer 21 and the rigid slope foundation 11 is not shown in Figure 1 the figure.

[0052] The first waterproof layer 13 is attached to the slope surface of the slope 201 and covers the slope surface. The first waterproof layer 13 performs a waterproof function, thereby preventing the water 40 from rising and falling from the water level from seeping into the fill roadbed 22. There are many structures of the first waterproof layer 13, which are not limited by the embodiment of the present invention. For example, in one embodiment, the first waterproof layer 13 can be a waterproof felt layer. In other embodiments, the first waterproof layer 13 can be a W-OH (i.e., modified hydrophilic polyurethane) protective layer. Specifically, the first waterproof layer 13 can be formed by spraying a modified hydrophilic polyurethane (water) solution with a mass concentration of 12%-15%, and the spraying concentration can be 2.0L / m 2 -2.5L / m 2 During preparation and spraying, the solution temperature can be controlled at 1°C-2°C. Modified hydrophilic polyurethane is a green polymer compound. When mixed with water to form a solution and sprayed on the ground, it forms a polymer film. The water permeability of this polymer film decreases rapidly with the increase of the concentration of (modified hydrophilic polyurethane). Therefore, the first waterproof layer 13 using a W-OH protective layer has good waterproof properties.

[0053] In an embodiment of the present invention, there may be two fixing columns 14, and they are used to be arranged at intervals on the slope surface of the slope 201. Specifically, the two fixing columns 14 can be parallel to each other. The fixing column 14 is fixedly connected to the waterside roadbed 20. Specifically, the first end of the first tensioning bar 15 is connected to the fixing column 14, and the second end of the first tensioning bar 15 passes through the first waterproof layer 13 and is buried in the fill roadbed 22 to tighten the fixing column 14. In this case, the second end of the first tensioning bar 15 is fixed in the fill roadbed 22. Under the tensioning action of the first tensioning bar 15, the fixing column 14 is tightly attached to the first waterproof layer 13 on the slope surface, thereby achieving the fixation of the fixing column 14 on the slope surface.

[0054] The main slope protection structure 10 is constructed from a main body 12, which is installed on the pavement. Specifically, the main body 12 is installed on the first waterproof layer 13. Two fixing columns 14 hold the main body 12 in place at each end. The bottom of the main body 12 is supported on a hard slope foundation 11, preventing it from sliding down the slope.

[0055] The slope protection structure 10 disclosed in the embodiments of the present invention can protect the reinforced soil-rock mixture layer 21 of the water-facing subgrade 20 at the bottom of the water-facing subgrade 20 by implanting a rigid slope foundation 11 on the water-facing soft soil layer 30. At the same time, the slope protection structure 10 protects the fill subgrade layer 22 of the water-facing subgrade 20 located above the reinforced soil-rock mixture layer 21. In this structure, the two fixing columns 14 are fixed on the slope surface of the slope 201 of the fill subgrade layer 22 by the tension of their respective corresponding first tension ribs 15. Furthermore, the slope protection main body 12 covering the slope surface is fixed on the slope surface by the two fixing columns 14 tightened by the first tension ribs 15. In this structure, the slope protection structure 10 and the rigid slope foundation 11 can respectively protect the reinforced soil-rock mixture layer 21 and the fill subgrade layer 22 of the water-facing subgrade 20. Compared with the prior art in which only simple methods such as stone masonry and shotcrete are used to protect the slope surface, the slope protection structure 10 of the water-facing subgrade disclosed in the embodiments of the present invention can improve the protection effect on the water-facing subgrade 20 and can better reduce the probability of the water-facing subgrade 20 being washed out, eroded, and collapsed.

[0056] The fixing column 14 can be a UHPC column made by casting UHPC. Of course, the fixing column 14 can also be a precast member made of ordinary reinforced concrete. In the embodiments of the present invention, the fixing column 14 can be made of other types of materials suitable for river embankment construction, and the embodiments of the present invention do not make limitations. It should be noted that all components included in the slope protection structure 10 of the water-facing subgrade disclosed in the embodiments of the present invention can be prefabricated, used, and sold in the form of product components, so as to be directly used during the road construction process. During the road construction process, the slope protection structure 10 can be laid section by section in the forward direction of the road.

[0057] In one embodiment, the slope protection main body 12 can be pressed tightly and directly adhered to the first waterproof layer 13. In another embodiment, the slope protection structure 10 disclosed in the embodiments of the present invention can further include a planting soil layer 16. The planting soil layer 16 can be accommodated in the space surrounded by the slope protection main body 12, the two fixing columns 14, and the first waterproof layer 13, and is clamped between the slope protection main body 12 and the first waterproof layer 13. In this case, the planting soil layer 16 can further protect the first waterproof layer 13, and green plants can be planted on the planting soil layer 16, so that the slope protection structure 10 can be greened, and thus the slope protection structure 10 has the ability to beautify the environment.

[0058] In the slope protection structure 10 disclosed in the embodiments of the present invention, the slope surface protection main body 12 can be an integral structure or a split structure. In order to achieve flexible installation, in one embodiment, the slope surface protection main body 12 can include a plurality of protection units 121, and the plurality of protection units 121 can be arranged in sequence from the top of the slope surface to the bottom of the slope surface and cover the slope surface. Both ends of each protection unit 121 include pressed edges 1201, and the pressed edges 1201 at both ends of each protection unit 121 are respectively pressed and fixed by two fixing columns 14.

[0059] In the embodiments of the present invention, the structure of the protection unit 121 can be various. For example, the protection unit 121 can be a precast cement reinforced concrete slab. The protection unit 121 can be in a flat plate shape or a non-flat plate shape, which is not limited in the embodiments of the present invention. In one embodiment, the protection unit 121 can be provided with a receiving groove, and the receiving groove can be filled with planting soil 17. The inner wall of the receiving groove facing the planting soil layer 16 can be provided with a plurality of through holes 1202. The planting soil 17 is used for planting plants 18. The through holes 1202 are used for the roots of the plants 18 to pass through and extend into the planting soil layer 16. In this case, the plants 18 growing in the planting soil 17 in the receiving groove can not only play the role of greening the slope protection structure 10, but also, during the growth process, grow in the planting soil layer 16 through their roots passing through the through holes 1202. Furthermore, the roots of the plants 18 play the role of further fastening the protection unit 121 to the planting soil layer 16, and finally the slope surface protection main body 12 can be fixed more stably, achieving the purpose of further improving the protection function. During the installation of the protection unit 121, the seedlings or seeds of the plants 18 can be planted in the planting soil 17 in the receiving groove. Of course, the seedlings or seeds can also be planted after the installation of the protection unit 121 is completed. It should be noted that the planting soil 17 herein is placed in the receiving groove, while the planting soil layer 16 is located between the protection unit 121 and the first waterproof layer 13, and the two belong to different components in the slope protection structure 10.

[0060] In the embodiments of the present invention, the structure of the protection unit 121 can be various, and the embodiments of the present invention do not limit it. In one embodiment, the protection unit 121 can include a bottom plate 1211 and a groove plate 1212. The bottom plate 1211 can be attached to the slope surface, the through holes 1202 are opened on the bottom plate 1211, the groove plate 1212 is fixed on the bottom plate 1211, and encloses a receiving groove with the bottom plate 1211. Specifically, the groove plate 1212 can be fixed on the surface of the bottom plate 1211 facing away from the slope. Both ends of the bottom plate 1211 can protrude out of the receiving groove respectively to form the pressed edges 1201. In this structure, the bottom plate 1211 can be attached to the slope surface (the planting soil layer 16 on the slope surface), which is beneficial to the tight fit between the protection unit 121 and the slope surface, and is beneficial to improving the installation stability of the protection unit 121. Specifically, the bottom plate 1211 can be a plate-like structural member with a length of 2m - 2.5m, a width of 25cm - 35cm, and a thickness of 2cm - 4cm. The groove plate 1212 can be a U-shaped plate, the thickness of the groove plate 1212 can be 2cm - 4cm, and the width of the pressed edge 1201 can be 2cm - 3cm. The part of the bottom plate 1211 located in the receiving groove can be provided with through holes 1202. The aperture of the through holes 1202 can be 1cm - 3cm, and the distance between two adjacent through holes 1202 can be 1cm - 3cm.

[0061] Furthermore, the notch of the receiving groove can be a horizontal notch so that the planting soil 17 forms a horizontal planting surface at the notch. The multiple protection units 121 form multiple step structures extending from the bottom of the slope surface to the top of the slope surface. This structure can make the slope protection main body 12 be a stepped structure, so that the slope protection structure 10 forms a structure that is not likely to cause people to slide into the water. During the process of rising and falling water, the slope protection structure 10 is beneficial for the fallen water personnel to climb out of the water and get rid of danger. Thus, it can be seen that the slope protection structure 10 disclosed in the embodiments of the present invention has good safety performance.

[0062] In order to facilitate the pressing operation of the fixing column 14 on the multiple protection units 121, in a specific embodiment, the fixing column 14 can include a column body 141 and a pressing protrusion 142 fixed on the side of the column body 141 facing away from the first waterproof layer 14. The first end of the first tensioning rib 15 can be connected to the column body 141, and the pressing protrusion 142 is in pressing fit with the pressed edge 1201. Optionally, the column body 141 and the pressing protrusion 142 can be an integral structure, or can be prepared separately and then fixed and connected through fasteners (such as threaded fasteners, rivets, etc.). In a more specific structure, the column body 141 and the pressing protrusion 142 can form a structure with a T-shaped cross-section. The cross-section of the column body 141 can be a shape with a width of 15cm - 20cm and a length of 25cm - 30cm. The cross-section of the pressing protrusion 142 can be a shape with a thickness of 2cm - 3cm and a length of 3cm - 5cm.

[0063] The first tensioning rib 15 plays a major fixing role. As described above, the second end of the first tensioning rib 15 is buried in the fill roadbed 22 to achieve its own fixation, and the first tensioning rib 15 indirectly fixes the slope protection main body 12 through the tensioning fixing column 14. The structure of the first tensioning rib 15 can be various, and the embodiments of the present invention do not limit it. For example, some steel bar structures with strong gripping force after being buried can be selected to achieve it. In one embodiment, the first tensioning rib 15 can be a mesh structure. The mesh structure can cover a larger area in the fill roadbed 22, so that it can be fixed more firmly by the fill roadbed 22, and can enable the first tensioning rib 15 to generate a greater and more stable tension force on the fixing column 14.

[0064] The embodiment of the present invention discloses a first tensioning rib 15 with a specific structure. The disclosed first tensioning rib 15 can include a main rib 151 and a plurality of spreading ribs 152. The first end of the main rib 151 can be connected to the fixing column 14, and the second end of the main rib 151 can pass through the first waterproof layer 13 and be fixed in the fill roadbed 22. The first ends of the plurality of spreading ribs 152 can be connected to the part of the main rib 151 located in the fill roadbed 22, and the second ends of the plurality of spreading ribs 152 extend in the fill roadbed 22 respectively toward the two sides where the main rib 151 is distributed away from each other. The first tensioning rib 15 with this structure is connected to the fixing column 14 through the main rib 151, and the plurality of spreading ribs 152 extend dispersedly with the main rib 151 as the main rod, so that the first tensioning rib 15 with this structure forms a structure similar to a tree root and is more firmly fixed in the fill roadbed 22. This is beneficial to ensuring a more firm fixation of the fixing column 14, and further beneficial to achieving a more firm fixation of the slope protection main body 12. In an embodiment where the fixing column 14 includes a column body 141, the first end of the main rib 151 can be connected to the fixing column 14 through the connection with the column body 141.

[0065] In order to improve the gripping force of the first tensioning rib 15, the first ends of the plurality of spreading ribs 152 can be connected to the main rib 151 in an alternating manner. Specifically, the plurality of spreading ribs 152 can be distributed at an acute angle with the main rib 151, for example, at 30° - 60°.

[0066] In an embodiment of the present invention, both the main reinforcement bars 151 and the diffusion reinforcement bars 152 can be made of high-strength steel wires wrapped with high-density polyvinyl chloride plastics. The cross-sectional shape of the main reinforcement bar 151 can be circular, its cross-sectional diameter can be 10 cm - 12 cm, and 10 - 12 high-strength steel wires can be arranged in the middle. The cross-sectional shape of the diffusion reinforcement bar 152 can be rectangular, its cross-sectional size can be 8 mm - 12 mm in length and 2 mm - 2.5 mm in thickness, and 3 - 4 high-strength steel wires are evenly distributed in the middle. The length of the diffusion reinforcement bar 152 can be 25 cm - 30 cm. In an embodiment where there are multiple diffusion reinforcement bars 152, the spacing between two adjacent diffusion reinforcement bars 152 can be 15 cm - 20 cm.

[0067] In an embodiment of the present invention, the first tension reinforcement bars 15 can be distributed in parallel on the same cross-section of the embankment road base layer 22 to form a group distribution, and a group of the first tension reinforcement bars 15 can be distributed at intervals of 2 m - 2.5 m along the road advancing direction.

[0068] In order to improve the tension fixing effect on the fixed column 14, in an embodiment of the present invention, the number of the first tension reinforcement bars 15 can be multiple, and the main reinforcement bars 151 of the multiple first tension reinforcement bars 15 connected to the same fixed column 14 are parallel to each other.

[0069] There are various connection methods between the first tension reinforcement bar 15 and the fixed column 14. For example, the first end of the first tension reinforcement bar 15 can be fixedly connected to the fixed column 14 through a foundation bolt. In other embodiments, the fixed column 14 can be provided with a reinforcement passing hole 1411, a hanging structure 1412 can be fixed in the reinforcement passing hole 1411, the first end of the main reinforcement bar 151 can be in hanging cooperation with the hanging structure 1412, and the reinforcement passing hole 1411 is filled and fixed with a plugging material. The plugging material can be cement, specifically, it can be a plugging material formed after UHPC slurry is poured.

[0070] In an embodiment of the present invention, the structure of the rigid slope foundation 11 can be various, and the embodiments of the present invention do not limit it. For example, the rigid slope foundation 11 can be an ordinary reinforced concrete implant. An embodiment of the present invention discloses a rigid slope foundation 11 with a specific structure. The disclosed rigid slope foundation 11 can include outer baffles 111 and inner baffles 112 distributed at intervals, connection baffles 113 distributed in groups, second tension reinforcement bars 114 distributed in groups, a pouring filling material 115, and a mixed filling body 116.

[0071] The inner baffles 112 and outer baffles 111 are sequentially inserted into the water-facing soft soil layer 30 in the water-facing direction. Each set of connecting baffles 113 can include two connecting baffles 113 spaced apart and supported between the inner baffles 112 and outer baffles 111. The connecting baffles 113 not only prevent the inner baffles 112 and outer baffles 111 from tipping toward each other, but also assist in forming the first filling space and the second filling space. The two ends of the grouped second tensioning ribs 114 can be connected to the inner baffles 112 and outer baffles 111, respectively, to tighten the inner baffles 112 and outer baffles 111, thereby preventing one of the inner baffles 112 and outer baffles 111 from tipping away from the other. Specifically, both ends of the second tensioning ribs 114 can pass through the inner baffle 112 and the outer baffle 111, respectively, to be connected to the inner baffle 112 and the outer baffle 111. At least one set of second tensioning ribs 114 is provided between opposite surfaces of the same set of connection baffles 113.

[0072] The same set of connecting baffles 113, inner baffles 112, and outer baffles 111 can enclose a first filling space, which is filled with cast filler 115. At least one set of second tensioning bars 114 can be distributed between two connecting baffles 113 within the same set of connecting baffles 113. After the cast filler 115 is filled, it can form a skeletonized cast structure with the second tensioning bars 114, thereby improving the structural stability of the hard slope foundation 11.

[0073] A second filling space can be formed between two adjacent sets of connecting baffles 113. Specifically, the portion between the inner baffle 112 and the outer baffle 111, between the two adjacent sets of connecting baffles 113, constitutes the second filling space. A mixed filler 116 fills the second filling space. Mixed filler 116 can be a UHPC (ultra-high performance concrete) mixed filler, i.e., a filler composed of sand and gravel mixed with UHPC. The cast filler 115 can be cast-in-place UHPC.

[0074] This structure uses grouped second tensioning bars 114 to form the skeleton of the hard slope foundation 11, with the inner and outer baffles 112 and 111, along with the grouped connecting baffles 113. This improves the overall strength of the hard slope foundation 11. Simultaneously, the first filling space is filled with cast filler 115, and the second filling space is filled with mixed fill 116, resulting in a solid, strong skeleton structure for the hard slope foundation 11. This allows the hard slope foundation 11 to be more stably maintained at the bottom edge of the waterside roadbed 20.

[0075] In a more specific embodiment, a plurality of guiding protrusions 117 may be fixedly spaced on the opposite surfaces of the inner baffle 112 and the outer baffle 111. The guiding protrusions 117 may extend along the insertion direction of the inner baffle 112 and the outer baffle 111. Each connecting baffle 113 is inserted between the inner baffle 112 and the outer baffle 111 by closely adhering to two opposite guiding protrusions 117. The two ends of the same set of second tension ribs 114 may be respectively connected to two opposite guiding protrusions 117, so as to realize the tension connection between the two ends of the second tension rib 114 and the inner baffle 112 and the outer baffle 111 respectively. This structure enables the connecting baffle 113 to be inserted between the inner baffle 112 and the outer baffle 111 along the corresponding guiding protrusions 117, thus facilitating the directional insertion of the connecting baffle 113 and making the insertion operation simpler. The guiding protrusions 117 may be fixed to the inner baffle 112 or the outer baffle 111 by means of threaded connectors or snap connections. In other embodiments, the guiding protrusions 117 may be integrally formed with the inner baffle 112 or the outer baffle 111. The embodiments of the present invention do not limit the specific fixing manner between the guiding protrusions 117 and the inner baffle 112 or the outer baffle 111. More specifically, guiding protrusions 117 are distributed between two connecting baffles 113 included in the same set of connecting baffles 113. The guiding protrusions 117 can be combined with the poured filling material 115 to further play the role of a skeleton, thereby making the structure of the rigid slope foundation 11 more stable.

[0076] In order to improve the strength of the connecting baffle 113 and avoid the connecting baffle 113 being fractured by the poured filling material 115 or the mixed filling body 116, in the embodiments of the present invention, a plurality of reinforcing ribs 118 may be fixedly provided on the opposite surfaces of the same set of connecting baffles 113. The reinforcing ribs 118 on each connecting baffle 113 can enhance the strength of the connecting baffle 113. Specifically, a plurality of reinforcing ribs 118 may be provided on each connecting baffle 113, so as to further enhance the strengthening effect. In other embodiments, a connecting baffle 113 may also be provided with one reinforcing rib 118. The embodiments of the present invention do not limit the specific number of the reinforcing ribs 118 on the connecting baffle 113. The reinforcing ribs 118 may extend along the insertion direction of the connecting baffle 113, so as to reduce the resistance suffered during the insertion process of the connecting baffle 113. At the same time, the reinforcing ribs 118 are also beneficial to enhancing the bonding strength between the poured filling material 115 and the connecting baffle 113 after solidification.

[0077] As described above, since the outer baffle 111 and the inner baffle 112 are inserted into the water-facing soft soil layer 30, in order to prevent the water in the water-facing soft soil layer 30 from seeping into the hard slope foundation 11 from bottom to top, in the slope protection structure 10 disclosed in the embodiment of the present invention, the hard slope foundation 11 may further include a second waterproof layer 119. The second waterproof layer 119 may be laid on the bottom part of the space between the inner baffle 112 and the outer baffle 111 in the water-facing soft soil layer 30. In such a structure, the second waterproof layer 119 can waterproof at the bottom of the hard slope foundation 11, thereby preventing the water in the water-facing soft soil layer 30 from invading the hard slope foundation 11, which is beneficial to improving the structural stability of the hard slope foundation 11. In other embodiments, the second waterproof layer 119 may also be laid only under the mixed filling body 116. Since the poured filling material 115 is relatively dense and not easily penetrated by water, the second waterproof layer 119 may not be provided under it.

[0078] The second waterproof layer 119 may be a waterproof membrane, a waterproof felt, etc. In other embodiments, the second waterproof layer 119 may be a W-OH waterproof membrane. Specifically, in the process of manufacturing the second waterproof layer 119, it can be made of a W-OH modified hydrophilic polyurethane (water) solution with a mass concentration of 5%-7% and a spraying amount of 1.5L / m 2 -2.0L / m 2 .

[0079] In the embodiment of the present invention, the inner baffle 112, the outer baffle 111 and the connecting baffle 113 may be made of UHPC, that is, the inner baffle 112 may be a UHPC inner baffle, the outer baffle 111 may be a UHPC outer baffle, and the connecting baffle 113 may be a UHPC connecting baffle.

[0080] In an embodiment where the inner baffle 112 is a UHPC inner baffle, the outer baffle 111 is a UHPC outer baffle, the connecting baffle 113 is a UHPC connecting baffle, the mixed filler 116 is a UHPC (i.e., ultra-high performance concrete) mixed filler, and the cast filler 115 is cast-in-place UHPC, the UHPC used in these components can all be supported by waste steel wire rope fiber UHPC concrete with a compressive strength of 100 MPa-120 MPa. The composition and usage (weight ratio) of the waste steel wire rope fiber UHPC are as follows: cement: silica fume: quartz sand: quartz powder: high-efficiency water reducer: water: waste steel wire rope fiber = 100:20-30:100-110:20-30:2-3:45-55:6-8. Scrap steel wire rope fibers can be cut into segments with a length of 1 cm to 1.5 cm. Each steel wire in the scrap steel wire rope can be 0.6 mm to 0.8 mm thick. The cast-in-place UHPC can be rapid-setting UHPC, meaning it contains a predetermined weight ratio of an accelerating setting agent. It should be noted that the numerical ranges listed herein are inclusive.

[0081] As can be seen from the above, in the embodiment of the present invention, UHPC uses waste steel wire rope fibers instead of expensive steel fibers used in the traditional preparation process, which not only can achieve waste utilization but also can reduce the manufacturing cost of UHPC.

[0082] In order to facilitate the insertion of the inner baffle 112 and the outer baffle 111 into the water-adjacent soft soil layer 30, in one embodiment, the bottom of the inner baffle 112 and the outer baffle 111 can be provided with a piercing tip that is convenient for insertion into the water-adjacent soft soil layer 30. In one embodiment, the dimensions of the inner baffle 112 and the outer baffle 111 can be a plate-like member with a length of 0.8m, a width of 8cm, and a height of 5m. The bottom of the connecting baffle 113 can be provided with a grouting hole 1131, and the grouting hole 1131 is used for pouring the filler 115 into the first filling space. In one embodiment, the connecting baffle 113 can be a plate-like structural member with a thickness of 2cm, a length of 0.8m, and a height of 1m.

[0083] In the embodiment of the present invention, the reinforced soil-rock mixture layer 21 serves as the foundation layer of the waterside roadbed 20. The structural stability of the reinforced soil-rock mixture layer 21 directly determines the structural stability of the waterside roadbed 20. The reinforced soil-rock mixture layer 21 can have various structures, for example, it can be a reinforced concrete structure. The embodiment of the present invention discloses a specific structure of the reinforced soil-rock mixture layer 21. The reinforced soil-rock mixture layer 21 may include waste tires 211, a soil-rock mixture 212, and connectors 213. The waste tires 211 are arranged in multiple layers, each layer comprising multiple rows of waste tires 211. Vertically, opposing rows of waste tires 211 in adjacent layers may be staggered, resulting in a close-fitting arrangement of the waste tires 211 in the reinforced soil-rock mixture layer 21, such that any two adjacent waste tires 211 can be securely connected via connectors 213. The soil-rock mixture 212 is filled within the waste tires 211 and in the gaps between them.

[0084] This reinforced soil-rock mixture layer 21 is constructed with multiple layers of waste tires 211 arranged in multiple rows, connected by connectors 213 to form a monolithic framework. The soil-rock mixture 212 is then filled into the waste tires 211 and into the gaps between them. This monolithic framework allows the soil-rock mixture 212 within the reinforced soil-rock mixture layer 21 to be drawn together into a solid, integrated structure, ultimately improving structural stability. Furthermore, using waste tires 211 as the reinforcement for the reinforced soil-rock mixture layer 21 allows for waste recycling.

[0085] In one embodiment, the connector 213 may be a rivet. In another embodiment, the connector 213 may be a threaded connector. The embodiments of the present invention do not limit the specific type of connector 213. In the embodiments of the present invention, two adjacent waste tires 211 may be connected by a single connector 213. To improve the stability of the connection between two adjacent waste tires 211, multiple connectors 213 may be connected between the two adjacent waste tires 211. It should be noted that the embodiments of the present invention do not limit the number of connectors 213 used to connect two adjacent waste tires 211.

[0086] An embodiment of the present invention discloses a method for constructing a slope protection structure for a waterside roadbed, wherein the slope protection structure 10 of the waterside roadbed 20 is the slope protection structure 10 described in the embodiment above. The slope protection structure 10 is used to at least protect the slope 201 of the waterside roadbed 20. As described above, the waterside roadbed 20 includes a reinforced soil-rock mixture layer 21 disposed on a waterside soft soil layer 30 and a fill roadbed 22 disposed on the reinforced soil-rock mixture layer 21. The side of the fill roadbed 22 facing the water forms an inclined slope 201. The construction method involved may include the following steps:

[0087] S101. Construct a rigid slope foundation 11 on the water-adjacent soft soil layer 30.

[0088] S102. Excavate the area inside the rigid slope foundation 11 on the water-adjacent soft soil layer 30, and lay a reinforced soil-rock mixture layer 21 in the excavated area. The water-facing side of the rigid slope foundation 11 and the inner side of the rigid slope foundation 11 are distributed in opposite directions.

[0089] S103. Lay a fill road base layer 22 on the rigid slope foundation 11 in a layer-by-layer manner, and bury the first end of the first tensioning bar 15 in the fill road base layer 22. An inclined slope 201 is formed on the water-facing side of the fill road base layer 22.

[0090] S104. Lay a first waterproof layer 13 on the slope surface of the slope 201, and lay a slope protection main body 12 and fixing columns 14 on the first waterproof layer 13 so that the bottom of the slope protection main body 12 is supported on the rigid slope foundation 11, and both ends of the slope protection main body 12 are respectively pressed by two fixing columns 14, and the first end of the first tensioning bar 15 passes through the first waterproof layer 13 and tensions the fixing columns 14.

[0091] In a more specific embodiment, the construction method disclosed in the embodiment of the present invention may include:

[0092] S1. Construct a rigid slope foundation 11.

[0093] According to the design drawing, the UHPC inner baffle and the UHPC outer baffle are driven into the preset position of the water-facing soft soil layer 30. When driving, the UHPC inner baffle and the UHPC outer baffle of appropriate height are selected according to the water depth and the thickness of the silt layer of the water-facing soft soil layer 30, and the top of the UHPC inner baffle and the UHPC outer baffle are ensured to be 0.3m-0.5m higher than the water surface of the water 40. The ratio of the length of the UHPC inner baffle and the UHPC outer baffle below the reinforced soil-rock mixture layer 21 to the length above the reinforced soil-rock mixture layer 21 cannot be less than 5:2; after the UHPC inner baffle and the UHPC outer baffle are inserted, the UHPC connecting baffle is inserted along the side of the guide protrusion 117, and then the soil between the UHPC inner baffle and the UHPC outer baffle in the water-facing soft soil layer 30 is excavated. After the soil excavation is completed, the UHPC inner baffle, the UHPC outer baffle and the UHPC are cleaned. The surface of the C contact baffle is cleaned and free of silt; then, the two ends of the second tensioning bar 114 are inserted between the guide protrusions 117 using the rebar planting process; then, the UHPC contact baffle on the other side of the guide protrusion 117 is inserted to form a first filling space between it and the original UHPC contact baffle. Before the UHPC contact baffle is inserted, the position of the grouting hole 1131 is determined based on the measured depth, ensuring that the hole position of the grouting hole 1131 is 10 cm-12 cm higher than the excavation surface. Then, cast-in-place UHPC is prepared and injected into the first filling space formed between the UHPC contact baffles through the grouting hole 1131. After the cast-in-place UHPC solidifies, the second waterproof layer 119 can be sprayed on the bottom of the pit sandwiched between the UHPC inner baffle and the UHPC outer baffle (i.e., the second filling space formed between the two adjacent sets of contact baffles 113), and then the UHPC mixed filler is introduced;

[0094] S2, constructing a reinforced soil-rock mixture layer 21.

[0095] After the structure of the hard slope foundation 11 is stabilized, the silt in the area where the reinforced soil-rock mixture layer 21 is located is excavated, and then waste tires 211 are laid in layers and two adjacent waste tires 211 are connected with connectors 213 and filled with soil-rock mixture 212.

[0096] S3, constructing the fill road base 22.

[0097] After the reinforced soil-rock mixture layer 21 is constructed, the fill roadbed 22 is filled and compacted in layers. The thickness of each layer may not be greater than 30 cm. When each layer of the fill roadbed 22 is filled, the first tensioning reinforcement 15 is arranged on the water side.

[0098] S4, construct slope protection structure 10.

[0099] Before installing the UHPC column, first prepare a 12% modified hydrophilic polyurethane solution and spray it onto the slope of the filled road base layer 22 to form the first waterproof layer 13. Then install the UHPC column on the slope of the first waterproof layer 13, with the bottom of the UHPC column closely attached to the mixed slope foundation 11. Then pass the main reinforcement 151 through the reinforcement hole 1411, and hang the socket hole at the first end of the main reinforcement 151 into the hanging structure (the hanging structure can be reserved steel bars) 1412. Then use a quick-setting UHPC slurry with the same material as the cast-in-place UHPC to pour and seal the reinforcement hole 1411; after the installation of the UHPC column is completed, first install a protection unit 121 and then fill it with planting soil, so that the planting soil is tightly filled between the protection unit 121 and the first waterproof layer 13 to form the planting soil layer 16. Subsequently, the protection unit 121 and the planting soil are alternately installed and filled in turn until the construction of the slope protection main body 12 and the planting soil layer 16 is completed.

[0100] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A slope protection structure for a waterside roadbed, characterized in that: The slope protection structure (10) is at least used to protect the slope (201) of the water-facing roadbed (20), wherein the water-facing roadbed (20) comprises a reinforced soil-rock mixture layer (21) provided on the water-facing soft soil layer (30) and a fill roadbed (22) provided on the reinforced soil-rock mixture layer (21), wherein the fill roadbed (22) forms the inclined slope (201) on the water-facing side; the slope protection structure (10) comprises a hard slope foundation (11), a slope protection body (12), a first waterproof layer (13), two fixing columns (14), and a first tensioning bar (15); The hard slope foundation (11) is fixed on the water-facing side of the reinforced soil-rock mixture layer (21) and is used to support the bottom of the slope (201); the first waterproof layer (13) is attached to the slope surface of the slope (201) and covers the slope surface; the two fixing columns (14) are used to be placed on the slope surface at intervals; the first end of the first tensioning bar (15) is connected to the fixing column (14), and the second end of the first tensioning bar (15) passes through the first waterproof layer (13) and is buried in the fill roadbed (22) to tighten the fixing column (14); The slope protection body (12) is laid on the slope, and the two ends of the slope protection body (12) are respectively pressed by the two fixing columns (14), and the bottom of the slope protection body (12) is supported on the hard slope foundation (11). The slope protection body (12) includes a plurality of protection units (121), and the plurality of protection units (121) are arranged in sequence from the top of the slope to the bottom of the slope and cover the slope. Both ends of each protection unit (121) include pressed edges (1201), and the pressed edges (1201) at both ends of each protection unit (121) are respectively pressed and fixed by the two fixing columns (14). Each protection unit (121) is provided with a receiving groove, and the receiving groove is filled with planting soil (17), and the planting soil (17) is planted with plants (18); The hard slope foundation (11) includes outer baffles (111) and inner baffles (112) distributed at intervals, connecting baffles (113) distributed in groups, second tensioning bars (114) distributed in groups, cast fillers (115) and mixed fillers (116); The inner baffle (112) and the outer baffle (111) are sequentially inserted into the water-facing soft soil layer (30) in the water-facing direction; each group of the connecting baffles (113) includes two connecting baffles (113) that are inserted between the inner baffle (112) and the outer baffle (111) at intervals and supported between the inner baffle (112) and the outer baffle (111); the two ends of the group-distributed second tensioning bars (114) are respectively connected to the inner baffle (112) and the outer baffle (111); and at least one group of the second tensioning bars (114) is provided between opposite surfaces of the same group of connecting baffles (113); The same group of connecting baffles (113), the inner baffle (112), and the outer baffle (111) enclose a first filling space, and the cast filler (115) is filled in the first filling space; a second filling space is formed between two adjacent groups of connecting baffles (113), and the mixed filler (116) is filled in the second filling space; A plurality of guide protrusions (117) are fixed at intervals on the opposing surfaces of the inner baffle (112) and the outer baffle (111), and the guide protrusions (117) extend along the plug-in direction of the inner baffle (112) and the outer baffle (111). Each of the connecting baffles (113) is closely attached to two opposing guide protrusions (117) and plugged between the inner baffle (112) and the outer baffle (111); both ends of the same group of the second tensioning ribs (114) are respectively connected to the two opposing guide protrusions (117). A plurality of reinforcing ribs (118) are fixed to opposite surfaces of the same group of connecting baffles (113), and the reinforcing ribs (118) extend along the plugging direction.

2. The slope protection structure according to claim 1, characterized in that: The slope protection structure (10) further includes a planting soil layer (16), which is accommodated in a space enclosed by the slope protection body (12), the two fixing columns (14) and the first waterproof layer (13), and is sandwiched between the slope protection body (12) and the first waterproof layer (13).

3. The slope protection structure according to claim 2, characterized in that: A plurality of perforations (1202) are provided on the inner wall of the receiving groove facing the planting soil layer (16), and the perforations (1202) are used for allowing the roots of the plants (18) to pass through and extend into the planting soil layer (16).

4. The slope protection structure according to claim 3, characterized in that: The protection unit (121) comprises a bottom plate (1211) and a groove plate (1212), wherein the bottom plate (1211) is attached to the slope surface, and the groove plate (1212) is fixed to the bottom plate (1211) and forms the receiving groove together with the bottom plate (1211), and both ends of the bottom plate (1211) protrude outside the receiving groove to form the pressed edge (1201).

5. The slope protection structure according to claim 3, characterized in that: The slot opening of the receiving slot is a horizontal slot opening so that the planting soil (17) forms a horizontal planting ground at the slot opening, and the plurality of protection units (121) form a plurality of step structures extending from the bottom of the slope surface to the top of the slope surface.

6. The slope protection structure according to claim 2, characterized in that: The fixing column (14) comprises a column body (141) and a pressing protrusion (142) fixed to the side of the column body (141) facing away from the first waterproof layer (13); the first end of the first tensioning rib (15) is connected to the column body (141), and the pressing protrusion (142) is pressed and matched with the pressed edge (1201).

7. The slope protection structure according to claim 1, characterized in that: The first tensioning ribs (15) include a main rib (151) and a plurality of diffusion ribs (152), wherein a first end of the main rib (151) is connected to the fixing column (14), and a second end of the main rib (151) passes through the first waterproof layer (13) and is fixed in the fill roadbed (22); a first end of the plurality of diffusion ribs (152) is connected to a portion of the main rib (151) located in the fill roadbed (22), and a second end of the plurality of diffusion ribs (152) extends in the fill roadbed (22) toward two opposite sides of the main rib (151).

8. The slope protection structure according to claim 7, characterized in that: The first ends of the plurality of diffusion ribs (152) are staggeredly connected to the main ribs (151) and are distributed at an acute angle to the main ribs (151); and / or, the first tensioning ribs (15) are multiple, and the main ribs (151) of the multiple first tensioning ribs (15) connected to the same fixing column (14) are parallel.

9. The slope protection structure according to claim 7, characterized in that: The fixing column (14) is provided with a reinforcement hole (1411), a hanging structure (1412) is fixed in the reinforcement hole (1411), the first end of the main reinforcement (151) is hung and matched with the hanging structure (1412), and the reinforcement hole (1411) is filled and fixed with a blocking object.

10. The slope protection structure according to claim 1, characterized in that: The hard slope foundation (11) further includes a second waterproof layer (119), which is laid on the bottom portion of the space between the inner baffle (112) and the outer baffle (111) of the water-facing soft soil layer (30).

11. The slope protection structure according to claim 1, characterized in that: The reinforced soil-rock mixture layer (21) comprises waste tires (211), a soil-rock mixture (212) and a connecting piece (213). The waste tires (211) are distributed in multiple layers, and each layer of the waste tires (211) comprises multiple rows of the waste tires (211). In the vertical direction, two opposite rows of the waste tires (211) in two adjacent layers are staggered. Any two adjacent waste tires (211) are fixedly connected by the connecting piece (213), and the soil-rock mixture (212) is filled in the waste tires (211) and in the gaps between the waste tires (211).

12. The slope protection structure according to claim 11, characterized in that: The connecting piece (213) is a threaded connecting piece, and a plurality of the connecting pieces (213) are connected between two adjacent waste tires (211).

13. A construction method for a slope protection structure of a waterside roadbed, characterized in that: The slope protection structure (10) of the waterside roadbed is the slope protection structure (10) according to any one of claims 1 to 12, and the slope protection structure (10) is at least used to protect the slope (201) of the waterside roadbed (20), and the waterside roadbed (20) includes a reinforced soil-rock mixture layer (21) provided on the waterside soft soil layer (30) and a fill roadbed (22) provided on the reinforced soil-rock mixture layer (21), and the fill roadbed (22) forms the inclined slope (201) on the side facing the water; the construction method comprises the following steps: constructing the hard slope foundation (11) on the soft soil layer (30) near the water; Excavating the area on the water-facing soft soil layer (30) located inside the hard side slope foundation (11), and laying a reinforced soil-rock mixed layer (21) in the excavated area, with the water-facing side of the hard side slope foundation (11) and the inner side of the hard side slope foundation (11) facing away from each other; Laying a fill roadbed (22) on the hard slope foundation (11) in a layer-by-layer manner, and burying the first end of the first tensioning bar (15) in the fill roadbed (22), so that the side of the fill roadbed (22) facing the water forms an inclined slope (201); A first waterproof layer (13) is laid on the slope surface of the slope (201), and a slope protection body (12) and a fixing column (14) are laid on the first waterproof layer (13) so that the bottom of the slope protection body (12) is supported on the hard slope foundation (11) and the two ends of the slope protection body (12) are respectively pressed by the two fixing columns (14), and the first end of the first tensioning bar (15) passes through the first waterproof layer (13) and tightens the fixing column (14).

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