Fabricated round bamboo composite structural slope protection structure

Abstract

The utility model provides an assembly type round bamboo composite lattice slope protection structure which comprises a precast beam group, longitudinal beams and transverse beams are assembled through connecting node devices to form a latticed square frame structure; the foundation beam is fixed at the bottom of the slope and is connected with the bottom of the precast beam group; the slope crest protection structure is arranged on the slope crest and connected with the top of the precast beam group; the connecting node device can be connected with the end of the precast beam in four directions, and the upper portion of the connecting node device is an anchoring plate provided with a through hole for an anchor rod to penetrate through and be used for anchoring. According to the slope protection structure, the cross beams and the longitudinal beams are prefabricated in a factory, connecting node devices are machined, the slope protection structure can be assembled after being conveyed to a site, links such as steel bar binding, formwork installation, concrete pouring, formwork removal and maintenance on site are not needed, the slope protection structure can rapidly play a role, the slope protection structure is particularly suitable for emergency rescue, site construction manpower can be greatly saved, and the construction efficiency is improved. And the quality safety risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a prefabricated round bamboo composite grid slope protection structure. Background Technology

[0002] Grid slope protection is widely used in various civil engineering projects, especially in slope protection for highways, railways, water conservancy projects and municipal engineering projects. It is used to eliminate safety hazards such as soil erosion and slope instability, and to ensure the safety and stability of the project.

[0003] The existing cast-in-place reinforced concrete grid slope protection has the following disadvantages: 1. Poor construction conditions: The working surface is on a slope, making it inconvenient for workers to tie reinforcing bars, install formwork, and pour concrete, and posing significant safety risks. For slopes with steep inclines, scaffolding must be erected, increasing project costs. 2. Difficult quality control: Due to working on a slope, special measures are needed for reinforcing bars and formwork (such as driving fixing bars into the slope), and the weight of the reinforced concrete (especially the flowing state of the concrete during pouring) can easily cause slippage, leading to structural deformation or even collapse. 3. Complex procedures and long construction period: After the anchor bolts are installed, the cast-in-place reinforced concrete requires pouring the bottom layer of concrete, tying reinforcing bars, erecting formwork, pouring concrete, removing formwork, and curing concrete. The grid structure with embedded anchor bolts requires the concrete to reach a certain strength, and the anchor cables can only function after the concrete has reached its tensile strength. 4. High project cost. Cast-in-place concrete work requires a significant amount of on-site manual labor, and the efficiency is significantly reduced on slopes, resulting in high labor costs and high expenses for safety protection measures, thus increasing the overall project cost. 5. High construction safety risks. Due to the slope location, personnel safety requirements are high, and there are significant safety hazards, such as the risk of personnel rolling down the slope and causing injury or death. 6. Significant disturbance to the slope soil, especially during rainy or snowy weather, which can easily cause localized soil collapse.

[0004] For example, patent number CN118547634A discloses a method for constructing slope protection in water conservancy projects, including the following steps: Step 1: Cleaning the slope surface, using a lawnmower to cut away weeds on the slope surface, and removing gravel and other debris after clearing the weeds; Step 2: Leveling the slope surface, filling the depressions on the slope surface according to the designed angle, and transferring soil to the protrusions on the slope surface until the slope surface is level and the angle conforms to the design angle; Step 3: Concrete pouring, pouring grid-shaped concrete on the leveled slope surface, and after the concrete dries, laying a layer of loose sand within the grid formed by the concrete; Step 4: Laying the retaining bricks, using auxiliary handling equipment to move the retaining bricks to the predetermined position, and then laying them manually; Step 5: After the retaining bricks are laid, covering the slope surface with a protective net to maintain the stability of the slope surface and prevent soil erosion that could lead to slope collapse. The above plan requires on-site concrete pouring and curing. Since the pouring is carried out on a slope, the concrete pouring can only be carried out in stages, resulting in a long construction period. Utility Model Content

[0005] In view of the shortcomings of existing technologies, the purpose of this utility model is to solve the problem of the long construction cycle of traditional slope protection.

[0006] The technical solution of this utility model is:

[0007] A prefabricated round bamboo composite lattice slope protection structure includes:

[0008] Precast beam assemblies are formed by assembling longitudinal beams and transverse beams through connecting node devices to create a grid-like square frame structure.

[0009] An anchoring system, including an anchor rod, one end of which is fixed to a connecting node device and the other end is anchored in the slope body.

[0010] Preferably, the connecting node device is a square box, comprising:

[0011] Side panels are symmetrically arranged on the four sides of the box, and through holes are reserved on the side panels;

[0012] Anchor plate, installed on the upper surface of the box, is provided with anchor connection holes;

[0013] The ends of the crossbeams and longitudinal beams are connected to the sides of the connecting node device to form a grid-like square frame structure. One end of the anchor rod is fixed to the anchor plate, and the other end is obliquely anchored in the slope body.

[0014] Preferably, the anchor plate has a cross-shaped rib on the side near the cavity of the connecting node device. The rib includes a first rib and a second rib, the intersection of which is aligned with the anchor connection hole. The first rib and the second rib are arranged along the diagonal of the anchor plate.

[0015] Preferably, a prefabricated lattice beam slope protection structure further includes a foundation beam, fixed to the bottom of the slope and connected to the bottom of the prefabricated beam assembly.

[0016] Preferably, a prefabricated lattice beam slope protection structure further includes a slope top protection structure, which is installed at the slope top and connected to the top of the prefabricated beam assembly.

[0017] Preferably, the connecting node device is a square box made of welded steel.

[0018] Preferably, the anchor plate has a cross-shaped rib on the side near the cavity of the connecting node device. The cross-shaped rib includes a first rib and a second rib, the intersection of which is aligned with the center of the anchor bolt connection hole. The first rib and the second rib are arranged along the diagonal of the anchor plate, so that the slope sliding force borne by the anchor bolt is transmitted to the cross-shaped rib to the cross beams and longitudinal beams of the precast beam assembly.

[0019] Preferably, the crossbeams and longitudinal beams are composite beams made of round bamboo, comprising a spliced ​​round bamboo frame, a fiber winding layer, and a filling material. The spliced ​​round bamboo frame is composed of one or more hollow round bamboos arranged alternately at their large and small ends. The fiber winding layer is bound to the periphery of the spliced ​​round bamboo frame, and the filling material is used to fill the gaps between the fiber layer and the round bamboos, as well as between the round bamboos themselves.

[0020] Preferably, a protective layer is provided around the fiber winding layer;

[0021] Preferably, each hollow round bamboo has an external connecting rod at both ends of its inner cavity. The end face of the external connecting rod is flush with the end face of the hollow round bamboo. The outer end of the external connecting rod has a connecting screw hole. Adhesive filler is provided between the hollow round bamboo and the external connecting rod.

[0022] Compared with the prior art, the advantages of this utility model are:

[0023] 1. The slope protection structure of this utility model adopts prefabricated crossbeams, longitudinal beams and connecting node devices, which are transported to the site for assembly and installation. There is no need for on-site steel bar binding, formwork installation, concrete pouring, formwork removal and curing. Only bolt connection is required, which saves a lot of manpower on site, reduces quality and safety risks, and can be used immediately after installation. The construction period is short and it can play a role quickly, which is especially suitable for emergency rescue needs.

[0024] 2. The slope protection structure of this utility model is equipped with an anchoring system, which has a flexible adjustment function. When adjustment is required, the concrete protective layer can be removed first, and then the anchor rods can be tightened to secure the slope protection structure. If necessary, the slope protection structure beams can be adjusted or replaced, and then reinstalled after the position is adjusted. It can also be completely dismantled and reinstalled. This advantage is more prominent when used as a fill slope protection.

[0025] 3. The precast beam assembly in this utility model is composed of round bamboo, bamboo fiber (glass fiber), and concrete, replacing steel reinforcement except for connecting steel. Round bamboo is a natural material with a short growth cycle; after harvesting, the bamboo forest can naturally sprout new bamboo shoots, making it a green and sustainable building material. Bamboo absorbs a large amount of carbon dioxide during its growth process. Bamboo resources are abundant and inexpensive, significantly reducing project costs. Furthermore, the extensive use of bamboo effectively utilizes idle bamboo forest resources.

[0026] The detailed structure of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the lattice slope protection of this utility model;

[0028] Figure 2 This is a cross-sectional schematic diagram of the grid-structured slope protection of this utility model;

[0029] Figure 3 for Figure 2 A magnified view of a section at point A;

[0030] Figure 4 This is a side view of the lattice slope protection structure of this utility model;

[0031] Figure 5 for Figure 4 A partial sectional view at point B;

[0032] Figure 6 This is a structural schematic diagram of the connection node device and anchor plate of this utility model;

[0033] Figure 7 This is a schematic diagram of the longitudinal beam and transverse beam of this utility model.

[0034] The components are as follows: 1. Foundation beam; 2. Longitudinal beam; 3. Connecting node device; 4. Crossbeam; 5. Slope; 6. Slope top protection structure; 8. Anchor bolt; 11. Protective layer; 12. Fiber winding layer; 13. Assembled round bamboo frame; 14. External connecting rod; 15. Adhesive filler; 16. Connecting bolt hole; 17. Bolt; 21. Side plate; 22. Connecting through hole; 26. Anchor plate; 27. Anchoring connection hole; 28. Cross-shaped rib plate; 29. ​​Concrete protective layer. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise defined, the technical or scientific terms used in this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The words "comprising" or "including" and similar terms used in this disclosure mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The words "connected" or "linked" and similar terms are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] like Figures 1-5 As shown, this utility model provides a prefabricated round bamboo composite grid slope protection structure, including: a prefabricated beam group, which is assembled from longitudinal beams 2 and transverse beams 4 through connecting node devices 3 to form a grid-like square frame structure; a foundation beam 1, fixed to the bottom of the slope and connected to the bottom of the prefabricated beam group; a slope top protection structure 6, set at the top of the slope and connected to the top of the prefabricated beam group; and an anchoring system, including anchor rods 8, one end of which is anchored to the connecting node device 3, and the other end is embedded in the slope body 5. The transverse beams 4, longitudinal beams 2, and connecting node devices 3 are prefabricated in the factory and transported to the site for assembly and construction. There is no need for on-site steel reinforcement binding, formwork installation, concrete pouring, formwork removal, curing, etc.; only bolts 17 are needed for connection. This saves a significant amount of manpower on-site and reduces quality and safety risks. Furthermore, it is ready to use immediately and functions quickly, making it particularly suitable for emergency rescue needs.

[0037] It is worth noting that the anchor bolt 8 in this utility model can also be replaced by an existing anchor cable.

[0038] Specifically, such as Figure 6 As shown, the connecting node device 3 is a square box made of welded steel, including: side plates 21, symmetrically arranged on the four sides of the box, with pre-reserved through holes on the side plates 21; anchor plate 26, installed on the upper surface of the box, with anchor connection holes 27; the ends of the crossbeam 4 and the longitudinal beam 2 are connected to the sides of the connecting node device 3 to form a grid-like square frame structure; one end of the anchor rod 8 is fixed with anchor 17 through the anchor connection hole 27 of the anchor plate 26, and the other end is obliquely anchored in the slope 5.

[0039] Specifically, the anchor plate 26 is provided with a cross-shaped rib on the side near the cavity of the connecting node device 3. The rib includes a first rib and a second rib, the intersection of which is aligned with the center of the anchor connection hole 27. The first rib and the second rib are arranged along the diagonal of the anchor plate 26. The outer end of the cross-shaped rib 28 is 2-3 mm thicker than the wall thickness of the side plate 21 of the connecting node device 3. This facilitates the embedding of the anchor plate 26 into the cavity of the connecting node device 3 and limits the misalignment to a maximum of 4-6 mm, preventing excessive slippage when the anchor rod 8 is tensioned. It also allows the slope 5 sliding force borne by the anchor rod 8 to be transmitted to the cross beam 4 and longitudinal beam 2 of the precast beam assembly through the cross-shaped rib 28.

[0040] Specifically, such as Figure 7 As shown, the crossbeam 4 and longitudinal beam 2 are round bamboo composite beams, including a spliced ​​round bamboo frame 13, a fiber winding layer 12, and filling material. The spliced ​​round bamboo frame 13 is composed of one or more hollow round bamboos arranged alternately at their large and small ends. The fiber winding layer 12 is bound to the periphery of the spliced ​​round bamboo frame 13. The filling material is used to fill the gaps between the fiber layer and the round bamboos, as well as between the round bamboos. A protective layer 11 is provided around the fiber winding layer 12. Each hollow round bamboo has an external connecting rod 14 in its inner cavity at both ends. The end face of the external connecting rod 14 is flush with the end face of the hollow round bamboo. The outer end of the external connecting rod 14 has a connecting screw hole 16. An adhesive filler 15 is provided between the hollow round bamboo and the external connecting rod 14.

[0041] Round bamboo composite beams are made of round bamboo, bamboo strips, fiberglass, and concrete, replacing steel reinforcement except for connecting steel. Round bamboo is a natural material with a short growth cycle; after harvesting, bamboo forests can naturally sprout new bamboo shoots, making it a green and sustainable building material. Bamboo absorbs a large amount of carbon dioxide during its growth process; bamboo resources are abundant and inexpensive, significantly reducing project costs. Furthermore, the extensive use of bamboo effectively utilizes idle bamboo forest resources. Bamboo possesses excellent compressive and tensile strength, as well as good toughness, meeting the stress requirements of slope protection structures. When soil expands and deforms upon contact with water, round bamboo, due to its good toughness, can quickly return to its original state. The round bamboo composite beams enclose the round bamboo in concrete, isolating it from external moisture and air, greatly improving the bamboo's durability and meeting project requirements. The round bamboo has a hollow structure; compared to reinforced concrete, round bamboo composite beams of the same volume require approximately 40% less concrete and weigh about 60% of reinforced concrete.

[0042] The above description is a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and concept of this utility model, should be covered within the protection scope of the claims of this utility model.

Claims

1. A prefabricated round bamboo composite lattice slope protection structure, characterized in that, include: The precast beam assembly is formed by assembling longitudinal beams (2) and transverse beams (4) through connecting node devices (3) to form a grid-like square frame structure; Anchoring system, including anchor rod (8), one end of which is fixed to the connecting node device (3), and the other end is anchored in the slope (5); The connecting node device (3) is a square box, comprising: Side plates (21) are symmetrically arranged on the four sides of the box body, and through holes are reserved on the side plates (21); An anchor plate (26) is installed on the upper surface of the box and has anchor connection holes (27). The ends of the crossbeam (4) and the longitudinal beam (2) are connected to the side of the connecting node device (3) to form a grid-like square frame structure. One end of the anchor rod (8) is fixed to the anchor plate (26), and the other end is obliquely anchored in the slope (5).

2. The prefabricated round bamboo composite lattice slope protection structure according to claim 1, characterized in that: The anchor plate (26) has a cross rib (28) on the side near the cavity of the connecting node device (3). The rib includes a first rib and a second rib, the intersection of which is aligned with the anchor connection hole (27). The first rib and the second rib are arranged along the diagonal of the anchor plate (26).

3. A prefabricated round bamboo composite lattice slope protection structure according to claim 1 or 2, characterized in that: It also includes a foundation beam (1), which is fixed to the bottom of the slope and connected to the bottom of the precast beam assembly.

4. A prefabricated round bamboo composite lattice slope protection structure according to claim 1 or 2, characterized in that: It also includes a slope top protection structure (6), which is set at the slope top and connected to the top of the precast beam group.

5. A prefabricated round bamboo composite lattice slope protection structure according to claim 1 or 2, characterized in that: The crossbeam (4) and longitudinal beam (2) are round bamboo composite beams, including a spliced ​​round bamboo frame (13), a fiber winding layer (12), and filling material. The spliced ​​round bamboo frame (13) is composed of one or more hollow round bamboos arranged alternately at their large and small ends. The fiber winding layer (12) is tied to the periphery of the spliced ​​round bamboo frame (13). The filling material is used to fill the gaps between the fiber layer and the round bamboos, as well as between the round bamboos.

6. The prefabricated round bamboo composite lattice slope protection structure according to claim 5, characterized in that: The fiber winding layer (12) is surrounded by a concrete protective layer (11).

7. A prefabricated round bamboo composite lattice slope protection structure according to claim 5, characterized in that: Each hollow round bamboo has an external connecting rod (14) in the inner cavity at both ends. The end face of the external connecting rod (14) is flush with the end face of the hollow round bamboo. The outer end of the external connecting rod (14) is provided with a connecting screw hole (16). Adhesive filler (15) is provided between the hollow round bamboo and the external connecting rod (14).

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