Slope supporting system and construction method thereof

Abstract

The invention discloses a slope supporting system and a construction method thereof. The slope supporting system comprises a plurality of FRP bed boards, and stress release holes and connecting rings are arranged on the FRP bed boards; a plurality of grouting anchor rods are further arranged between the FRP bed boards, the grouting anchor rods are driven into the side slope, limiting pressing rods are arranged on the peripheries of the ends of the grouting anchor rods, and the limiting pressing rods are connected with the connecting rings; a pair of connecting rings which are correspondingly arranged on the adjacent FRP bed boards and are not connected with the limiting pressing rods are connected through self-locking fasteners; the system further comprises an on-slope FRP drainage ditch assembly and an under-slope FRP drainage ditch assembly. According to the side slope supporting system, the difficulty of side slope supporting can be simplified, the construction speed of side slope supporting can be increased, meanwhile, the supporting strength and stability of a side slope can be guaranteed, and the FRP bed board is high in adaptability, is not limited by construction conditions and can be conveniently constructed under various conditions; and the subsequent maintenance is relatively simple, and local repair can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a slope support system and a construction method thereof. Background Art

[0002] During the construction of large-scale engineering infrastructure, slopes are often encountered. In order to ensure the safety of the slopes, the slopes will be reinforced and supported. Existing slope reinforcement is mostly to drive a certain number of anchor rods into the soil, and then spray a concrete surface layer on the slope. The support structure is formed through the interaction of anchor rods, soil and sprayed concrete surface layer. This construction method has a large construction volume. Once the concrete is formed, the stress in the soil is not easy to release, and it will cause problems such as slippage in the later stage. Moreover, this structure cannot be recycled and reused. There are also prefabricated slope support structures. Prefabricated panels are laid on the slopes for fixing to achieve the purpose of reinforcement. These panels are mostly prefabricated concrete plates, steel plates or aluminum plates. These types of plates are large in size and weight, and are difficult to install and lay. They need to be set on the slopes for a long time to work, and they cannot effectively release soil pressure and improve soil stress conditions. Summary of the invention

[0003] The purpose of the present invention is to provide a slope support system and a construction method thereof in view of the problems existing in the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A slope support system comprises a plurality of FRP panels, wherein the FRP panels are provided with a plurality of stress release holes, and the FRP panels are provided with a plurality of connecting rings around the panels; the plurality of FRP panels are laid on the slope in sequence, and a plurality of grouting anchor rods are provided between adjacent FRP panels, the grouting anchor rods are driven into the slope, and a plurality of limiting pressure rods are provided on the outer periphery of the ends of the grouting anchor rods, and the limiting pressure rods are connected to the connecting rings adjacent to the grouting anchor rods; a pair of connecting rings on adjacent FRP panels which are arranged correspondingly and are not connected to the limiting pressure rods are connected by self-locking fasteners; and the system also comprises an on-slope FRP drainage ditch assembly connected to the FRP panels above the slope, and a below-slope FRP drainage ditch assembly connected to the FRP panels below the slope.

[0005] The slope support system can simplify the difficulty of slope support and improve the construction speed of slope support by setting the FRP slab and the grouting anchor rods, while also ensuring the support strength and stability of the slope. Moreover, the FRP slab has strong adaptability and is not limited by construction conditions, and can be conveniently constructed under various conditions. Subsequent maintenance is also relatively simple, and local repairs are possible.

[0006] After the FRP slabs are laid on the slope in an orderly manner, they can provide a stable slope surface for the slope, prevent soil erosion, and improve the stress of the soil; combined with the stress release holes arranged thereon, they can not only release the stress of the slabs themselves, allowing the slabs to be supported in a stable state, but also release the lateral soil pressure of soil landslide (collapse), which can reduce soil landslide and prevent the expansion and spread of soil landslide.

[0007] The provision of the grouting anchor rods, on the one hand, can enhance the supporting force, bearing capacity and stability, prevent soil deformation, collapse and slippage, adapt to complex geological conditions and improve the seismic performance of soil; on the other hand, the limit pressure rods connected thereto can be used to connect the FRP panels, fix and press the FRP panels, so that the force of the FRP panels can be transmitted to the grouting anchor rods to form support, and the force of the grouting anchor rods can be transmitted to each FRP panel to disperse and release unstable forces.

[0008] The setting of the connecting ring facilitates the connection between the limiting pressure rod and the FRP decking, and the self-locking fasteners can also be used to connect adjacent FRP decking together, so that the FRP decking on the entire slope forms an integral structure connected together, which can effectively resist local soil sliding and avoid soil and water flow.

[0009] Furthermore, the stress release holes are circular holes, and a plurality of the stress release holes are arranged in an array on the FRP decking. Grass seeds are respectively arranged in the gaps between adjacent FRP deckings and in the stress release holes, so that the grass seeds can take root in the soil, thereby reinforcing the slope and reducing soil erosion.

[0010] Furthermore, the connecting rings include edge connecting rings arranged at the four sides of the FRP deck, and corner connecting rings arranged at the four corners of the FRP deck, and the edge connecting rings and the corner connecting rings are respectively integrally formed with the FRP deck or pre-embedded and connected to the FRP deck.

[0011] Furthermore, the edge connecting ring is a U-shaped structure, having a first connecting rib preset in the FRP deck, the ends of the first connecting rib are respectively provided with radial silk threads, and second connecting ribs are provided between adjacent first connecting ribs; the corner connecting ring is an open ring structure, the open ends of the open ring structure are all located in the FRP deck and are respectively connected to the second connecting ribs.

[0012] Furthermore, one end of the grouting anchor rod is a pointed end, and the other end is provided with a grouting port. The rod body of the grouting anchor rod is provided with a plurality of grouting holes, and burrs staggered from the grouting holes.

[0013] Furthermore, a flip-over lock is provided at the end of the limiting pressure rod, and a pressing groove is provided below the limiting pressure rod near the end, and the pressing groove is clamped with the connecting ring and locked by the lock.

[0014] Furthermore, the self-locking fastener includes a locking plate, a clamping portion is provided below the locking plate, the clamping portion is provided with a clamping space for connecting and accommodating the ring body of the adjacent connecting ring, a pair of elastic self-locking arc arms are provided below the clamping portion, and the ends of the elastic self-locking arc arms are provided with free ends expanding outward; a pulling and pressing handle is provided above the locking plate.

[0015] Furthermore, the slope FRP drainage ditch assembly includes a U-shaped upper drainage ditch, the upper end surface of the upper drainage ditch is provided with an upper ditch edge of the outer edge, the upper ditch edge on one side is connected to an upper transition bevel integral therewith, and the upper transition bevel is also provided with the stress release hole and the connecting ring.

[0016] Furthermore, the downhill FRP drainage ditch assembly includes a U-shaped lower drainage ditch, the upper end face of which is provided with a lower ditch edge with an outer edge, and the lower ditch edge on one side is connected to a lower transition bevel integral therewith, and the stress release hole and the connecting ring are also provided on the lower transition bevel.

[0017] The upper transition bevel and the lower transition bevel are structures connected as one body with the respective upper ditch edges and lower ditch edges, and can directly cover the upper corners and the lower corners of the slope when laid. Such a structure can well protect the upper and lower corner structures of the slope and prevent these parts from being damaged. At the same time, this FRP gutter assembly is laid in an integrated manner, with higher structural stability. There is no need to set up additional protective structures at the upper and lower corners separately, which simplifies the construction.

[0018] A construction method for a slope support system, the construction method comprising the following steps: The prepared FRP decking, the on-slope FRP drainage ditch assembly and the down-slope FRP drainage ditch assembly are transported to the construction site, the slope is divided into laying grids, and the laying sequence is set according to the laying grids; According to the laying grid, a plurality of grouting anchor rods are arranged at intervals, wherein a grouting anchor rod must be set at the cross intersection of four adjacent FRP paving plates, and the depth of the grouting anchor rod driven into the slope is not less than 3m. During actual construction, the grouting anchor rod is set at the depth required by the specification; There are two ways to distribute the grouting anchor rods. One is to arrange them at intervals of 6-10m as designed. The grouting anchor rods between two adjacent FRP decks can be arranged at intervals in the horizontal and vertical directions. The other is to set them at the cross intersection of every four FRP decks, that is, to make the limit pressure rods on the grouting anchor rods simultaneously connect the four corner connection rings at the cross intersection. Laying the FRP slabs in sequence according to the laying order, connecting the limit pressure rods on the grouting anchor rods to the multiple connecting rings between the adjacent FRP slabs and tightening them; Buckling the self-locking fasteners on the connecting rings between the adjacent FRP deck boards that are not connected to the limiting pressure rods, so that a pair of adjacent and corresponding connecting rings are connected together; The on-slope FRP drainage ditch assembly is laid on the slope, and the connecting ring between the on-slope FRP drainage ditch assembly and the FRP decking located above is also connected to the limiting pressure rod or the self-locking fastener; The downslope FRP drainage ditch assembly is laid below the slope, and the connecting ring between the downslope FRP drainage ditch assembly and the FRP decking below is also connected to the limiting pressure rod or the self-locking fastener; Grass seeds are respectively arranged in the gaps between adjacent FRP decks, in the gaps between the FRP decks and the on-slope FRP gutter assembly, in the gaps between the FRP decks and the down-slope FRP gutter assembly, and in the stress release holes; After a period of time, the limit of the limit pressure rod is released, the self-locking fastener is pulled out, and the FRP floor panels are disassembled in sequence, and the recovered FRP floor panels are ready for next use.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. The slope support system can simplify the difficulty of slope support and improve the construction speed of slope support through the arrangement of the FRP slabs and the grouting anchor rods, while also ensuring the support strength and stability of the slope. Moreover, the FRP slabs have strong adaptability and are not limited by construction conditions. They can be conveniently constructed under various conditions. Subsequent maintenance is also relatively simple and can be partially repaired. 2. After the FRP slabs are orderly laid on the slope, they can provide a stable slope surface for the slope, prevent soil erosion, and improve soil stress. In combination with the stress release holes arranged thereon, they can not only The grouting anchor rod can be set up to release the stress of the plate itself, so that the plate can be supported in a stable state, and the lateral earth pressure of soil landslide (collapse) can be released, which can reduce soil landslide and avoid the expansion and spread of soil landslide; 3. The setting of the grouting anchor rod can, on the one hand, enhance the supporting force, bearing capacity and stability, prevent soil deformation, collapse and slippage, adapt to complex geological conditions and improve the seismic performance of soil; on the other hand, the limit pressure rod connected thereto can be used to connect the FRP deck, fix and press the FRP deck, so that the force of the FRP deck can also be transmitted to the grouting anchor rod to form support, and can also transmit the force of the grouting anchor rod to each The FRP decking can disperse and release unstable forces; 4. The setting of the connecting ring facilitates the connection between the limit pressure rod and the FRP decking, and the self-locking fasteners can also be used to connect adjacent FRP decking together, so that the FRP decking on the entire slope forms an integral structure connected together, which can effectively resist local soil sliding; 5. The on-slope FRP drainage ditch assembly and the down-slope FRP drainage ditch assembly can respectively reinforce the drainage ditch above and below the slope, and the upper transition bevel and the lower transition bevel are structures connected as one with their respective upper ditch edges and lower ditch edges, which can directly connect the slope when paving. The upper and lower corners are covered, and such a structure can well protect the upper and lower corner structures of the slope to prevent these parts from being damaged. At the same time, the FRP gutter assembly is laid in an integrated manner, and the structural stability is higher; 6. Through this construction method, a support system can be effectively formed on the slope of the building foundation pit. The support has high stability and firmness, can effectively prevent soil erosion, and avoid disasters such as slope sliding and collapse. Moreover, the construction is relatively simple, the construction efficiency and quality can be improved, and the later maintenance is also convenient. Local damage can be repaired separately. The FRP paving board has a long service life, and these boards can be recycled for reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the FRP deck in the slope support system of the present invention; Figure 2 It is a partial schematic diagram of the FRP deck connection in the slope support system of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of a slope support system of the present invention; Figure 4 A schematic diagram of a connection structure of the edge connection ring in the FRP deck of the present invention; Figure 5 A schematic diagram of a connection structure of an angle connection ring in an FRP deck of the present invention; Figure 6 It is a schematic diagram of the structure of the grouting anchor rod in the slope support system of the present invention; Figure 7 It is a structural schematic diagram of the upper limit pressure rod of the grouting anchor rod of the present invention; Figure 8 It is a top view schematic diagram of the end structure of the limit pressure rod of the present invention; Fig. 9 It is a structural schematic diagram of the connection between the limit pressure rod and the connecting ring of the present invention; Fig.10 A schematic diagram of the structure of the grouting anchor rod and the limiting pressure rod of the present invention; Fig.11 A schematic diagram of the structure of the self-locking fastener of the present invention; Fig.12 A schematic diagram of a structure in which a self-locking fastener of the present invention is connected to a connecting ring; In the figure: 1. FRP decking; 2. stress relief hole; 3. connection ring; 301. edge connection ring; 302. corner connection ring; 4. grouting anchor rod; 401. grouting port; 402. grouting hole; 403. burr; 5. limit pressure rod; 501. pressure groove; 502. connection port; 503. connection groove; 6. self-locking fastener; 7. FRP drainage ditch assembly on the slope; 701. upper drainage ditch; 702. upper ditch edge; 703. upper transition Bevel; 8. Downhill FRP drainage ditch assembly; 801. Lower drainage ditch; 802. Lower ditch edge; 803. Lower transition bevel; 9. First connecting rib; 10. Second connecting rib; 11. Silk thread; 12. Lock; 1201. Limiting lock plate; 1202. Limiting groove; 1203. Locking rod; 13. Connecting column; 14. Locking plate; 15. Clamping part; 16. Clamping space; 17. Elastic self-locking arc arm; 18. Pull and press handle. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] like Figure 1 to Figure 3 As shown, a slope support system includes a plurality of FRP panels 1, wherein the FRP panels 1 are provided with a plurality of stress release holes 2, and the FRP panels 1 are provided with a plurality of connecting rings 3 around them; the plurality of FRP panels 1 are laid on the slope in sequence, and a plurality of grouting anchor rods 4 are provided between adjacent plurality of FRP panels 1, wherein the grouting anchor rods 4 are driven into the slope, and a plurality of limiting pressure rods 5 are provided on the outer periphery of the ends of the grouting anchor rods 4, and the limiting pressure rods 5 are connected to a plurality of connecting rings 3 adjacent to the grouting anchor rods 4; a pair of connecting rings 3 correspondingly arranged on adjacent FRP panels 1 and not connected to the limiting pressure rods are connected by a self-locking fastener 6; and the system also includes an on-slope FRP drainage ditch assembly 7 connected to the FRP panels 1 above the slope, and a below-slope FRP drainage ditch assembly 8 connected to the FRP panels 1 below the slope.

[0024] The slope support system can simplify the difficulty of slope support and improve the construction speed of slope support by setting the FRP slab 1 and the grouting anchor rod 4, while also ensuring the support strength and stability of the slope. Moreover, the FRP slab 1 has strong adaptability and is not limited by construction conditions, and can be conveniently constructed under various conditions. Subsequent maintenance is also relatively simple, and local repairs are possible.

[0025] After the FRP slabs 1 are laid on the slope in an orderly manner, they can provide a stable slope surface for the slope, prevent soil erosion, and improve the stress of the soil; in combination with the stress release holes arranged thereon, it can not only release the stress of the slabs themselves, allowing the slabs to be supported in a stable state, but also release the lateral soil pressure of soil landslide (collapse), which can reduce soil landslide and prevent the expansion and spread of soil landslide.

[0026] The setting of the grouting anchor rod 4, on the one hand, can enhance the supporting force, bearing capacity and stability, prevent soil deformation, collapse and slippage, adapt to complex geological conditions and improve the seismic resistance of soil; on the other hand, the limit pressure rod 5 connected thereto can be used to connect the FRP deck 1, fix and press the FRP deck 1, so that the force of the FRP deck 1 can also be transmitted to the grouting anchor rod 4 to form support, and the force of the grouting anchor rod 4 can also be transmitted to each FRP deck 1 to disperse and release unstable force.

[0027] The setting of the connecting ring 3 facilitates the connection between the limiting pressure rod 5 and the FRP deck 1, and also enables the adjacent FRP decks 1 to be connected together by using the self-locking fasteners 6, so that the FRP decks 1 on the entire slope form an integral structure connected together, which can effectively resist local soil sliding and avoid soil and water flow.

[0028] The above-slope FRP drainage ditch assembly 7 and the below-slope FRP drainage ditch assembly 8 can respectively reinforce the drainage ditch above and below the slope to prevent deformation and collapse of the drainage ditch, so as not to affect the normal drainage of the slope. The setting of the upper and lower drainage ditch can also guide the water flow on the slope surface into the ditch and discharge it in a specific direction, reduce the surface water on the slope, and prevent the erosion of the soil by the water flow. Through effective drainage, the drainage ditch can also stabilize the slope surface and prevent the occurrence of dangerous situations such as slope deformation and landslide.

[0029] The FRP deck 1, the on-slope FRP drainage ditch assembly 7 and the down-slope FRP drainage ditch assembly 8 are all made of fiber reinforced plastics, which contain reinforcing materials such as glass fiber, carbon fiber or boron fiber, so that their strength is greatly improved and their weight is light. Compared with steel plates and aluminum plates, their specific strength is higher.

[0030] Furthermore, the stress release holes 2 are circular holes, and a plurality of the stress release holes 2 are arranged in an array on the FRP deck 1 , and grass seeds are respectively provided in the gaps between adjacent FRP decks 1 and in the stress release holes 2 .

[0031] The stress release holes 2 and these gaps are set up not only for stress release and loading and unloading, but also for sowing grass seeds at these locations, so that the grass seeds can take root in the soil to reinforce the slope and reduce soil erosion. After the root system is well developed, the plants can become the main ecological reinforcement structure of the slope, so that the FRP slabs can be withdrawn. These grass seeds can also be seeds of other plants.

[0032] Furthermore, the connecting ring 3 includes edge connecting rings 301 arranged on the four sides of the FRP deck 1, and corner connecting rings 302 arranged at the four corners of the FRP deck 1. The edge connecting ring 301 and the corner connecting ring 302 are respectively integrally formed with the FRP deck 1 or pre-embedded and connected to the FRP deck 1.

[0033] When the FRP panels 1 are laid, there are several pairs of corresponding connection rings 3 between adjacent FRP panels 1, including edge connection rings 301 corresponding to the edges, and corner connection rings 302 corresponding to the corners of the four FRP panels 1; when the grouting anchor rod 4 is set between adjacent FRP panels 1, it can use the four limiting pressure rods 5 around its ends to simultaneously connect the four adjacent edge connection rings 301, or the four corner connection rings 302 at the corners; because the intervals between the grouting anchor rods 4 are greater than the side length of the FRP panels 1, the limiting pressure rods 5 are not set at each FRP panel 1, and the FRP panels 1 without the limiting pressure rods 5 use the self-locking fasteners 6 to connect each pair of edge connection rings 301. The size of the corner connection ring 302 is smaller than the size of the edge connection ring 301.

[0034] The FRP decking 1 is a square board of 1m*1m to 3m*3m, and its thickness is 3-10mm. In this embodiment, the size of 1.5m*1.5m is selected. For a board with a smaller thickness, its connecting ring 3 can be made together with the main body by mold integral molding. For a board with a larger thickness, in addition to being integrally molded with the main body material, ribs can also be pre-embedded to connect these connecting rings during manufacturing.

[0035] Specifically, Figure 4 and Figure 5 As shown, the edge connecting ring 301 is a U-shaped structure, having a first connecting rib 9 preset in the FRP deck, the ends of the first connecting rib 9 are respectively provided with radial silk threads 11, and second connecting ribs 10 are provided between adjacent first connecting ribs 9; the corner connecting ring 302 is an open ring structure, the open ends of the open ring structure are all located in the FRP deck 1 and are respectively connected to the second connecting ribs 10.

[0036] Through this arrangement, the first connecting rib 9 and the second connecting rib 10 can connect the edge connecting ring 301 and the corner connecting ring 302 in each FRP plate to form a closed-loop connection structure, which can cover the circumferential range of the entire plate, so as to enhance the strength and integrity of the connecting ring, facilitate the transmission and dispersion of force, and avoid the situation of excessive local force. The radial setting of the silk thread 11 can form a connection relationship with the fiber in the plate, allowing it to take root in the plate better and improve the connection strength.

[0037] Further, combined with Figure 6 As shown, one end of the grouting anchor rod 4 is a pointed end, and the other end is provided with a grouting port 401. The rod body of the grouting anchor rod 4 is provided with a plurality of grouting holes 402, and burrs 403 staggered from the grouting holes.

[0038] The grouting port and the grouting hole are arranged so that grouting can form a permanent supporting structure. The burr arrangement can enhance the bonding ability between the grouting anchor rod and the soil or slurry, and the tip is arranged so that the burr rod can be driven into the soil.

[0039] Furthermore, an anti-rotation groove may be provided along the axial direction on the outer periphery of the grouting anchor rod 4 to enhance its anti-rotation capability.

[0040] Further, combined with Figure 7-9 As shown, a flip-over lock buckle 12 is provided at the end of the limiting pressure rod 5 , and a pressing groove 501 is provided below the limiting pressure rod 5 near the end, and the pressing groove 501 is clamped with the connecting ring 3 and locked by the lock buckle 12 .

[0041] The pressing groove 501 can be pressed on the connecting ring 3, and the locking buckle 12 can buckle the connecting ring 3 after being turned over and connect with the limiting pressure rod 5 to form a locking structure. In this way, the connecting ring can be conveniently connected and a certain downward pressure can be provided to fix and limit the FRP deck 1. This connection method is not only easy to operate, but also can be opened later to disassemble the FRP deck without damage.

[0042] Specifically, the lock buckle 12 includes a limit lock plate 1201, a concave limit groove 1202 is provided in the middle of the limit lock plate 1201, and a locking rod 1203 is provided at one end of the limit lock plate 1201. A connecting port 502 is provided at the end of the limit pressure rod 5, and the other end of the limit lock plate 1201 is rotatably connected to the connecting port 502 through a connecting ear plate and a rotating shaft. The limit pressure rod 5 is bulged downward near the end and is provided with the pressure groove 501, and a penetrating connecting groove 503 is provided on the rod body of the limit pressure rod 5.

[0043] When the limit lock plate 1201 rotates to the bottom of the limit pressure rod 5, the limit groove 1202 is arranged opposite to the pressure groove 501, and the connecting ring is accommodated and clamped therebetween. The locking rod 1203 will pass through the connecting groove 503 and emerge from the top of the limit pressure rod 5, and can be locked by means of gaskets and nuts.

[0044] The other ends of the four limiting pressure rods 5 can be connected to an annular connector, and then the annular connector is connected and fixed to the grouting anchor rod; or each end of the limiting pressure rod 5 can be provided with a connecting column 13, such as Fig.10 As shown, the connecting column 13 passes through the hole on the grouting anchor rod 4 and is locked by a nut or the like.

[0045] Further, combined with Fig.11 and 12 As shown, the self-locking fastener 6 includes a locking plate 14, a clamping portion 15 is provided below the locking plate 14, the clamping portion 15 is provided with a clamping space 16 for connecting and accommodating the ring body of the adjacent connecting ring 3, a pair of elastic self-locking arc arms 17 are provided below the clamping portion 15, and the ends of the elastic self-locking arc arms 17 are provided with free ends expanding outward; a pulling and pressing handle 18 is provided above the locking plate 14.

[0046] The clamping portion 15 and the clamping space 16 can accommodate a pair of connecting rings 3 and clamp the connecting rings 3 therein; the elastic self-locking arc-shaped arms 17 can be opened under the action of external force so that they can clamp the connecting ring 3, and when there is no external force, the pair of elastic self-locking arc-shaped arms 17 can be closed under the action of their own elastic force to form a self-locking structure. The flared structure formed by the free end expanding outward is conducive to opening the elastic self-locking arc-shaped arms when they contact the connecting ring. The pulling and pressing handle 18 is arranged at the top, which is convenient for applying pressure downward to clamp the connecting ring, and also convenient for pulling the self-locking fastener upward to separate the self-locking fastener from the connecting ring. Since its opening is facing downward, the force applied during installation is from top to bottom, which can open a pair of elastic self-locking arc-shaped arms, and when there is no pulling force, the connecting ring itself cannot be separated from the clamping space.

[0047] The elastic self-locking arc-shaped arm 17 has a metal spring inside, which extends to the clamping portion and the free end, and is made of rubber outside to give it certain strength and flexibility.

[0048] In some embodiments, the self-locking fastener 6 may also be a self-tightening nylon rope, which is directly tied to a pair of adjacent connecting rings. This self-locking fastener is simpler and has a lower cost, but requires additional labor hours for tying.

[0049] Furthermore, the slope FRP drainage ditch assembly 7 includes a U-shaped upper drainage ditch 701, the upper end surface of the upper drainage ditch 701 is provided with an outer edge upper ditch edge 702, and the upper ditch edge 702 on one side is connected to an upper transition bevel 703 integral therewith, and the upper transition bevel 703 is also provided with the stress release hole and the connecting ring.

[0050] The downhill FRP drainage ditch assembly 8 includes a U-shaped lower drainage ditch 801, the upper end surface of which is provided with an outer lower ditch edge 802, and the lower ditch edge 802 on one side is connected to a lower transition bevel 803 integral therewith, and the lower transition bevel 803 is also provided with the stress release hole 2 and the connecting ring 3.

[0051] The upper drainage ditch, the upper ditch edge, the upper transition bevel, the lower drainage ditch, the lower ditch edge, and the lower transition bevel can all be made of FRP material and can also be fixed using anchor rods; wherein the upper transition bevel 703 and the lower transition bevel 803 are structures connected as one body with their respective upper ditch edges and lower ditch edges, and can directly cover the upper corner and the lower corner of the slope during laying, such a structure can well protect the upper and lower corner structures of the slope to avoid damage to these parts, and at the same time, this FRP drainage ditch assembly is laid in an integrated manner, with higher structural stability, and no additional protective structures need to be set up at the upper and lower corners separately, thereby simplifying construction.

[0052] The upper transition bevel 703 and the lower transition bevel 803 can also be connected to the grouting anchor 4 or the connecting ring on the FRP deck 1 through the connecting ring 3 to form a support system together with the entire slope; and can also be in contact and connected with the FRP deck at a later time, without affecting the recycling and reuse of the FRP deck.

[0053] A drainage pipe is also provided in the slope, which is connected and communicated with the lower drainage ditch, and can drain excess water in the slope into the lower drainage ditch to avoid disasters such as collapse and sliding caused by excessive water accumulation in the slope.

[0054] A construction method for a slope support system, the construction method comprising the following steps: The FRP decking, the on-slope FRP drain ditch assemblies and the down-slope FRP drain ditch assemblies are prefabricated in batches, and the fabricated FRP decking, the on-slope FRP drain ditch assemblies and the down-slope FRP drain ditch assemblies are transported to the construction site, the slope is divided into laying grids according to the sizes of the FRP decking, the on-slope FRP drain ditch assemblies and the down-slope FRP drain ditch assemblies, and the laying sequence is set according to the laying grids.

[0055] According to the laying grid, one grouting anchor rod is arranged at the cross intersection of every four FRP slabs, and some grouting anchor rods can be arranged at intervals at other transverse and longitudinal positions according to actual needs. The depth of the grouting anchor rod driven into the slope is not less than 3m, such as 6-9m; the grouting anchor rod can be constructed according to the preset position, driven into the slope first, and the limiting pressure rod can be connected during the laying process of the FRP slabs; the grouting anchor rod can also be driven in after the FRP slabs are laid.

[0056] The FRP panels are laid in sequence according to the laying order, with the spacing between the edges of adjacent FRP panels being about 100 mm, and the limiting pressure rods on the grouting anchor rods are connected to the multiple connecting rings between adjacent FRP panels and fastened.

[0057] The self-locking fastener is buckled and pressed on the connecting rings between the adjacent FRP deck boards that are not connected to the limiting pressure rods, so that a pair of adjacent and corresponding connecting rings are connected together.

[0058] The on-slope FRP drainage ditch assembly is laid above the slope, the upper transition bevel of the on-slope FRP drainage ditch assembly is laid above the slope of the slope, and the connecting ring between the upper transition bevel and the FRP decking located above is also connected to the limiting pressure rod or the self-locking fastener; The downslope FRP drainage ditch assembly is laid below the slope, and the lower transition bevel of the downslope FRP drainage ditch assembly is laid below the slope of the slope. The connecting ring between the lower transition bevel and the FRP deck below is also connected to the limiting pressure rod or the self-locking fastener.

[0059] Grass seeds are sown in the gaps between adjacent FRP decks, in the gaps between the FRP decks and the upper transition bevels of the on-slope FRP gutter assembly, in the gaps between the FRP decks and the lower transition bevels of the down-slope FRP gutter assembly, and in the stress release holes.

[0060] After a period of time, for example, when the root system of vegetation is well developed, or when the stability of the slope is guaranteed, or when other construction is carried out at the location, the limit of the limit pressure rod can be released, the self-locking fastener can be pulled out, and the FRP decking can be disassembled in turn, and the recovered FRP decking can be used next time.

[0061] Through this construction method, a support system can be effectively formed on the slope of the construction foundation pit. The support has high stability and firmness, can effectively prevent soil erosion, and avoid disasters such as slope sliding and collapse. In addition, the construction is relatively simple, the construction efficiency and quality can be improved, and the later maintenance is also convenient. Local damage can be repaired separately. The FRP decking has a long service life and can be recycled and reused.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slope support system, characterized in that: The invention comprises a plurality of FRP deck boards, each of which is provided with a plurality of stress release holes, and a plurality of connecting rings are provided around the FRP deck boards; the plurality of FRP deck boards are laid on the slope in sequence, and a plurality of grouting anchor rods are provided between adjacent plurality of FRP deck boards, the grouting anchor rods are driven into the slope, and a plurality of limiting pressure rods are provided on the outer periphery of the end of the grouting anchor rods, and the limiting pressure rods are connected to the connecting rings adjacent to the grouting anchor rods; a pair of connecting rings on adjacent FRP deck boards which are arranged correspondingly and are not connected to the limiting pressure rods are connected by self-locking fasteners; the invention also comprises an on-slope FRP drainage ditch assembly connected to the FRP deck boards above the slope, and a below-slope FRP drainage ditch assembly connected to the FRP deck boards below the slope.

2. The slope support system according to claim 1, characterized in that: The stress release holes are circular holes, and a plurality of the stress release holes are arranged in an array on the FRP decking. Grass seeds are respectively arranged in the gaps between adjacent FRP deckings and in the stress release holes.

3. The slope support system according to claim 1, characterized in that: The connecting rings include edge connecting rings arranged at the four sides of the FRP deck, and corner connecting rings arranged at the four corners of the FRP deck. The edge connecting rings and the corner connecting rings are respectively integrally formed with the FRP deck or pre-embedded and connected to the FRP deck.

4. The slope support system according to claim 3, characterized in that: The edge connecting ring is a U-shaped structure, having a first connecting rib preset in the FRP deck, the ends of the first connecting rib are respectively provided with radial silk threads, and second connecting ribs are provided between adjacent first connecting ribs; the corner connecting ring is an open ring structure, the open ends of the open ring structure are both located in the FRP deck and are respectively connected to the second connecting ribs.

5. The slope support system according to claim 1, characterized in that: One end of the grouting anchor rod is a pointed end, and the other end is provided with a grouting port. The rod body of the grouting anchor rod is provided with a plurality of grouting holes, and burrs staggered with the grouting holes.

6. The slope support system according to claim 1, characterized in that: The end of the limiting pressure rod is provided with a flip-over lock buckle, and the lower part of the limiting pressure rod close to the end is provided with a pressing groove, and the pressing groove is clamped with the connecting ring and locked by the lock buckle.

7. The slope support system according to claim 1, characterized in that: The self-locking fastener includes a locking plate, a clamping portion is provided below the locking plate, the clamping portion is provided with a clamping space for connecting and accommodating the ring body of the adjacent connecting ring, a pair of elastic self-locking arc arms are provided below the clamping portion, and the ends of the elastic self-locking arc arms are provided with free ends expanding outward; a pulling and pressing handle is provided above the locking plate.

8. The slope support system according to claim 1, characterized in that: The slope FRP drainage ditch assembly includes a U-shaped upper drainage ditch, the upper end surface of the upper drainage ditch is provided with an upper ditch edge of the outer edge, the upper ditch edge on one side is connected to an upper transition bevel integral therewith, and the upper transition bevel is also provided with the stress release hole and the connecting ring.

9. The slope support system according to claim 1, characterized in that: The downhill FRP drainage ditch assembly includes a U-shaped lower drainage ditch, the upper end surface of which is provided with a lower ditch edge with an outer edge, and the lower ditch edge on one side is connected to a lower transition bevel integral therewith, and the lower transition bevel is also provided with the stress release hole and the connecting ring.

10. The construction method of the slope support system according to any one of claims 1 to 9, characterized in that: The construction method comprises the following steps: The prepared FRP decking, the on-slope FRP drainage ditch assembly and the down-slope FRP drainage ditch assembly are transported to the construction site, the slope is divided into laying grids, and the laying sequence is set according to the laying grids; According to the laying grid, a plurality of grouting anchor rods are arranged at intervals, wherein a grouting anchor rod must be set at the cross intersection of four adjacent FRP paving plates, and the depth of the grouting anchor rod driven into the slope is not less than 3m; Laying the FRP slabs in sequence according to the laying order, connecting the limit pressure rods on the grouting anchor rods to the multiple connecting rings between the adjacent FRP slabs and tightening them; Buckling the self-locking fasteners on the connecting rings between the adjacent FRP deck boards that are not connected to the limiting pressure rods, so that a pair of adjacent and corresponding connecting rings are connected together; The on-slope FRP drainage ditch assembly is laid on the slope, and the connecting ring between the on-slope FRP drainage ditch assembly and the FRP decking located above is also connected to the limiting pressure rod or the self-locking fastener; The downslope FRP drainage ditch assembly is laid below the slope, and the connecting ring between the downslope FRP drainage ditch assembly and the FRP decking below is also connected to the limiting pressure rod or the self-locking fastener; Grass seeds are respectively arranged in the gaps between adjacent FRP decks, in the gaps between the FRP decks and the on-slope FRP gutter assembly, in the gaps between the FRP decks and the down-slope FRP gutter assembly, and in the stress release holes; After a period of time, the limit of the limit pressure rod is released, the self-locking fastener is pulled out, and the FRP floor panels are disassembled in sequence, and the recovered FRP floor panels are ready for next use.

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