Bionic elastic anchoring and pulling device for border trees and root system growth-promoting typhoon-preventing method

Abstract

The invention discloses a bionic elastic anchoring device for border trees. The bionic elastic anchoring device is composed of a central controller and at least three anchoring units. The anchoring units are asymmetrically arranged in a bionic radial mode with the trunk as the center. Each anchoring unit is composed of a ground anchor assembly, an elastic inhaul cable assembly with one end connected with the ground anchor assembly and a trunk connecting assembly connected with the trunk and the other end of the elastic inhaul cable assembly. According to the multi-angle and asymmetric anchoring design, according to the local prevailing wind direction, more dense anchor points or anchor points with higher tensile force are arranged on the windward side, the bionic elastic anchoring device based on the shape simulates the plate root effect, the anchor points are arranged on the natural foundation of a tree, namely the edge of a root system net, and the tree is connected with the ground in an elastic mode; therefore, the working mechanism of a natural root system is simulated and assisted to the greatest extent to jointly resist typhoons.

Description

Technical Field

[0001] This invention relates to equipment with specific mechanical structure and function, serving as equipment to ensure the safety of urban infrastructure, intelligent basic general equipment, engineering components, special mechanical equipment manufacturing and intelligent protection system, specifically relating to a biomimetic elastic anchoring device and root-promoting typhoon protection method for roadside trees. Background Technology

[0002] Improving the typhoon resistance of urban street trees is a pressing issue that the industry urgently needs to address. Jiang Shuilong's paper, "Measures to Enhance the Typhoon Resistance of Urban Street Trees in Zhangzhou City," published in *Housing and Real Estate*, discusses tree species selection standards, planting specifications, and daily management practices from the aspects of tree species selection, design, construction, and maintenance, aiming to improve the typhoon resistance of urban street trees. However, the method used is to support the trees with four-legged fir wood and steel pipes, embedding the supports deep into the tree pit soil or fixing them with nails at the rear end. This method offers extremely limited typhoon resistance. Patent CN217038206U, on the other hand, includes two arc-shaped clamps and two connecting rods. The two arc-shaped clamps are rotatably connected, with their sides in contact. Each of the two arc-shaped clamps is fixedly connected with four brackets. This simple structure provides safe support for street trees and allows multiple street trees to be connected as a whole. Its main advantages are quick installation and convenient operation. Patent CN209234488U includes a main fixing ring with four sets of fixing struts evenly arranged around it. Each of the four sets of fixing struts has a deep-buried soil fixing device at its bottom. The deep-buried soil fixing device includes a fixing cavity, and deep-buried fixing plates are movably connected to the bottom of the outer walls of the fixing cavity. Elastic fixing blocks are also provided on the outer walls of the fixing cavity. Furthermore, both existing patents rely on a single device or method, offering limited enhancement to the typhoon resistance of roadside trees. Both also use rigid supports, which are prone to secondary damage such as bark abrasion, trunk breakage, or root uprooting. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a biomimetic elastic anchoring device for roadside trees, which greatly enhances the ability of roadside trees to resist typhoons, avoids rigid support, and can prevent secondary damage such as bark abrasion, trunk breakage, or root "prying". The multi-angle, asymmetrical anchoring design, based on the local prevailing wind direction, sets denser or stronger anchor points on the windward side, mimicking the "buttress root" effect. Based on this form, the biomimetic elastic anchoring device places the anchoring points at the edge of the tree's "natural foundation" (root network), connecting the tree to the ground in an elastic manner, thereby maximally simulating and assisting the working mechanism of the natural root system to jointly resist typhoons.

[0004] To achieve the above objectives, the technical solution of the present invention is to design a biomimetic elastic anchoring device for roadside trees, which consists of a central controller and at least three anchoring units.

[0005] The anchoring units are arranged in a biomimetic radial asymmetrical pattern centered on the tree trunk; each anchoring unit consists of a ground anchor component, an elastic cable component connected to the ground anchor component at one end, and a tree trunk connection component connected to the tree trunk and the other end of the elastic cable component.

[0006] The multi-angle, asymmetrical anchoring design, based on the prevailing wind direction, places denser or stronger anchor points on the windward side, mimicking the "buttress root" effect. The natural root system is a shallow, broad, asymmetrical network structure. Based on this morphology, the biomimetic elastic anchoring device places the anchoring points at the edge of the tree's "natural foundation" (root network), connecting the tree to the earth in an elastic manner. This maximizes the simulation and support of the natural root system's working mechanism, working together to resist typhoons.

[0007] The ground anchor assembly is a helical ground anchor; the elastic cable assembly consists of an elastic cable, a tension sensor, and an electrically controlled elastic damper, both of which are connected to the central controller signal.

[0008] The trunk connection assembly consists of a wide flexible strap with a width of not less than 5cm and an elastic sheath; the elastic sheath is wrapped around the trunk, and the wide flexible strap is wrapped around the outside of the elastic sheath; a pressure sensor is installed on the inside of the flexible strap, and the pressure sensor is connected to the central controller signal.

[0009] Pressure sensors within the flexible, wide binding straps monitor the pressure exerted on the tree trunk and prevent excessive strangulation. The wide straps, typically made of flexible, abrasion-resistant materials such as nylon or polyester, are usually over 5 cm wide to distribute pressure. The elastic sheath may contain padding or elastic material to further protect the bark and allow for minor movement.

[0010] The elastic cable is a rope containing highly elastic rubber; the anchoring point of the spiral ground anchor is located outside the projection range of the tree root crown of the roadside tree.

[0011] The spiral anchor is driven into the ground at a certain angle (such as 30-45 degrees) to the horizontal plane, and its cable outlet faces away from the tree trunk; It simulates the growth direction of the main supporting roots of trees, which can more effectively resist horizontal tension and prevent the ground anchor from being easily pulled out in the vertical direction.

[0012] The trunk connection components are installed at 1 / 3 to 1 / 2 of the trunk height.

[0013] A biomimetic elastic anchoring device for roadside trees consists of at least three anchoring units and a rigid or semi-rigid structure fixedly connected to the outside of the anchoring units.

[0014] The rigid structure consists of several vertical baffles fixed to the ground. The part of the vertical baffles located below the ground is connected to the helical anchor via a connecting rod. One end of the connecting rod is fixedly connected to the vertical baffle, and the other end of the connecting rod is hinged to a sleeve, which is fitted over the helical anchor. The vertical baffles can be arranged in a ring array around the three anchoring units, with the vertical baffle closest to the anchoring unit being fixedly connected to the helical anchor.

[0015] After the sleeve is inserted into the ground by the vertical baffle, the angle is adjusted appropriately to facilitate the insertion of the spiral anchor. Since the sleeve is hinged to one end of the connecting rod, it will not affect the insertion of the spiral anchor even if the angle of the sleeve is not quite the same as that of the connecting rod at the beginning. If the typhoon wind force is too strong, the typhoon resistance of this elastic anchoring device can be improved due to the action of the vertical baffle.

[0016] The semi-rigid structure is a protective netting surrounding the anchoring unit. The protective netting is barrel-shaped and has a certain distance between it and the anchoring unit.

[0017] The rigid structure consists of simulated soil or street tree soil blocks fixed to elastic cables of anchor units and branch elastic cables fixed to elastic cables. The simulated soil or street tree soil blocks are set on street tree soil on the ground, and the branch elastic cables are completely located within the simulated soil or street tree soil blocks.

[0018] The design incorporates maximum biomimicry, using simulated soil on the elastic anchoring structure or extending a portion of the soil from the roadside trees upwards. This extended portion is enclosed by a plastic baffle to maintain the shape of the soil (i.e., the soil block of the roadside trees above ground). Alternatively, simulated soil can be used in certain areas to enhance typhoon resistance, mimicking the shape of the ground-based root system and reducing the amount of simulated soil used, thus reducing the overall weight of the structure.

[0019] A method for promoting root growth and preventing typhoon damage in roadside trees, employing the aforementioned biomimetic elastic anchoring device, includes the following steps: S1: Determine at least one anchoring point in the outer area of ​​the root system of the roadside trees; S2: Install the anchor unit at the anchoring point to anchor it in the soil; S3: Determine the connection point on the trunk or main branch of the roadside tree and install the trunk connection component; S4: Connect the spiral anchor and the trunk connection assembly through the elastic cable assembly, and apply a preload to keep the elastic cable in a stretched state; The pre-tensioning force applied by the elastic cable generates continuous micro-stress in the soil of the tree root area, which stimulates the roots of the roadside trees to grow adaptively in order to resist the stress, thereby promoting root development.

[0020] The method further includes step S5: applying a bio-fertilizer or nutrient agent that promotes root growth to the soil in the area where the spiral anchor is installed.

[0021] Before, after, or simultaneously with the installation of the anchor unit in step S2, at least one aeration pipe and / or growth-promoting pipe is also installed in the soil of the root zone. The ventilation pipe has ventilation holes on its wall, and its upper opening is higher than the ground surface, which is used to transport air to the root area. Growth-promoting tubes are used to deliver liquid fertilizers, biological agents, or nutrient solutions to the root zone.

[0022] The advantages and beneficial effects of this invention are as follows: By mimicking the elastic anchoring system of natural root systems, roadside trees are provided with flexible ground support that allows them to sway with the wind and absorb typhoon energy. Simultaneously, by improving the soil environment in the root zone, using physical guidance and biochemical methods, healthy root growth is promoted both deeply and extensively. Ultimately, this comprehensive approach systematically enhances the wind resistance of roadside trees, effectively preventing wind-falling accidents and promoting the long-term health of the trees.

[0023] The multi-angle, asymmetrical anchoring design, based on the prevailing wind direction, places denser or stronger anchor points on the windward side, mimicking the "buttress root" effect. The natural root system is a shallow, broad, asymmetrical network structure. Based on this morphology, the biomimetic elastic anchoring device places the anchoring points at the edge of the tree's "natural foundation" (root network), connecting the tree to the earth in an elastic manner. This maximizes the simulation and support of the natural root system's working mechanism, working together to resist typhoons.

[0024] The central controller is configured to receive the tension data monitored in real time by the tension sensor, and dynamically adjust the damping coefficient of the electronically controlled elastic damper according to the preset tension threshold and wind speed warning information, so as to realize adaptive intelligent control of the tree trunk sway.

[0025] Pressure sensors within the flexible, wide binding straps monitor the pressure exerted on the tree trunk and prevent excessive strangulation. The wide straps, typically made of flexible, abrasion-resistant materials such as nylon or polyester, are usually over 5 cm wide to distribute pressure. The elastic sheath may contain padding or elastic material to further protect the bark and allow for minor movement.

[0026] The anchoring point should be far from the trunk. In biomimetic designs, the anchoring point should be placed at the edge of the main root distribution area or even further away (imitating the end of the lateral support root) to provide the maximum stabilizing torque.

[0027] Simulating the growth direction of the tree's main supporting roots allows for more effective resistance to horizontal tension, preventing the anchor from being easily pulled out vertically. Providing constraint at higher elevations can more effectively counteract wind torque, preventing the trunk from breaking at the roots, similar to how trees balance torque through their canopy distribution.

[0028] At both ends of the cable (where it connects to the trunk and damper), use universal shackles or ball joints. This ensures that the cable can withstand pure tension in any direction of oscillation without bending stress due to angle issues, thus guaranteeing the accuracy of the tension sensor measurements and the durability of the entire system.

[0029] The root system primarily resists the horizontal pulling force that "uproots" the tree. The biomimetic anchoring device mainly provides elastic restraint in the horizontal direction, allowing the trunk to sway within a safe range, rather than being completely rigidly fixed. The elastic anchoring device becomes a "smart seatbelt system"—it doesn't prevent the tree from swaying, but rather sets a safe sway boundary and provides strong restraint when the tree is about to exceed that boundary. This simulates the process in natural root systems where lateral roots are tightly wrapped by the soil and provide frictional resistance.

[0030] The elasticity of a cable is not necessarily better the softer it is. Its mechanical curve (tension-elongation curve) is designed so that this elastic cable has a progressive stiffness curve of "soft at the beginning and stiffer at the end". Initial stage (light wind): It is easily stretched, providing elasticity. Later stage (strong wind): The stiffness increases sharply, providing strong restraint. The composite structure of "rubber core (providing initial elasticity) + high-strength fiber load-bearing layer (providing strength at the end)" can be achieved and perfectly meets the requirements of biomimicry. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a first embodiment of the biomimetic elastic anchoring device for roadside trees according to the present invention; Figure 2 yes Figure 1 A magnified view of the middle section; Figure 3 yes Figure 1 A magnified view of the lower left portion; Figure 4 This is a schematic diagram of Embodiment 2 of the present invention; Figure 5 yes Figure 4 A magnified view of the lower left corner; Figure 6 yes Figure 5 Top view; Figure 7 This is a schematic diagram of Embodiment 3 of the present invention; Figure 8 This is a schematic diagram of Embodiment 4 of the present invention.

[0032] In the diagram: 1. Central controller; 2. Street tree; 3. Spiral ground anchor; 4. Elastic cable; 5. Tension sensor; 6. Electrically controlled elastic damper; 7. Module body; 8. Shackle; 9. Strap; 10. Elastic sheath; 11. Anchor head; 12. D-ring; 13. Vertical baffle; 14. Connecting rod; 15. Sleeve; 16. Arc hinge; 17. Protective fence; 18. Street tree soil block; 19. Branch elastic cable; 20. Plastic baffle. Detailed Implementation

[0033] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0034] Example 1: As Figures 1 to 3 As shown (for ease of illustration), Figure 1 (Only two anchoring units are shown). This invention is a biomimetic elastic anchoring device for roadside trees, consisting of a central controller 1 and three anchoring units. The anchoring units are arranged asymmetrically in a biomimetic radial pattern with the tree trunk as the center. Each anchoring unit consists of a ground anchor assembly, an elastic cable assembly connected to the ground anchor assembly at one end, and a trunk connection assembly connected to the trunk of the roadside tree 2 and connected to the other end of the elastic cable assembly.

[0035] The ground anchor assembly is a helical ground anchor 3; the elastic cable assembly consists of an elastic cable 4, a tension sensor 5, and an electrically controlled elastic damper 6, and both the tension sensor 5 and the electrically controlled elastic damper are connected to the central controller 1 via signals.

[0036] The central controller is configured to receive real-time tension data monitored by the tension sensor, and dynamically adjust the damping coefficient of the electro-hydraulic damper based on a preset tension threshold and wind speed warning information, thereby achieving adaptive intelligent control of tree trunk sway. The electro-hydraulic damper can be a magnetorheological fluid damper or an electrorheological fluid damper. Between the elastic cable and the ground anchor assembly, a sensor-damper integrated module (i.e., an electronically controlled elastic damper and a tension sensor are integrated into an execution measurement module, which is connected in series between the elastic cable and the ground anchor assembly; the execution measurement module includes a rigid module body 7; the outer cylinder of the electronically controlled elastic damper is fixedly installed on one side of the module body; the tension sensor is fixedly installed on the other side of the module body; the sensing axis of the tension sensor, the actuation axis of the electronically controlled elastic damper, and the central force transmission axis of the module body are coincident or parallel; the two ends of the module body are provided with a first connector and a second connector for series connection to the anchor system; the first connector is fixedly installed at the end of the tension sensor away from the module body, and the second connector is fixedly installed at the free end of the piston rod of the electronically controlled elastic damper. The execution measurement module also includes a protective shell, which covers the module body, the electronically controlled elastic damper, and the tension sensor; the first connector and the second connector at both ends of the module body are respectively connected to the helical ground anchor 3 and the cable through shackles 8).

[0037] The trunk connection assembly consists of a wide flexible binding strap 9 with a width of not less than 5cm and an elastic sheath 10; the elastic sheath is wrapped around the trunk, and the wide flexible binding strap is wrapped around the outside of the elastic sheath; a pressure sensor is installed on the inside of the flexible binding strap, and the pressure sensor is connected to the central controller signal.

[0038] The elastic cable is a rope containing highly elastic rubber; the anchoring point of the spiral ground anchor is located outside the projection range of the tree root crown of the roadside tree.

[0039] The anchoring points are designed to be far from the tree trunk. In a biomimetic design, the anchoring points should be placed at the edge of the main root distribution area or even further (mimicking the ends of lateral support roots) to provide maximum stabilizing torque. An environmental monitoring unit, including wind speed and soil moisture sensors, can also be installed, and it is also connected to the central controller. The elastic cable structure consists of: a core layer composed of multiple strands of highly elastic rubber reinforcement in the middle; a load-bearing layer formed by weaving or winding high-strength fiber bundles around the core layer; and a weather-resistant elastomer protective layer formed on the outside of the load-bearing layer through an extrusion coating process. The ends of the elastic cable are formed with connecting anchor heads 11 through an injection molding coating process (the ends of the cable are disassembled to expose the internal fiber bundles and rubber core, forming a "brush head" shape, which is then placed in a mold and injected with high-strength plastic compatible with the protective layer to form a robust anchor head). One of the two anchor heads of the elastic cable is connected to the connecting ring of the ground anchor assembly (i.e., the spiral ground anchor), and the other anchor head is connected via a shackle or directly through a D-ring 12 on the strap. An execution measurement module integrating an electronically controlled elastic damper and a tension sensor is fixedly installed near the anchor head of the helical ground anchor (one end of the execution measurement module is connected to an anchor head of the elastic cable through a first shackle, and the other end is connected to the connecting ring of the helical ground anchor through a second shackle).

[0040] The spiral anchor is driven into the ground at a certain angle (such as 30-45 degrees) to the horizontal plane, and its cable outlet faces away from the tree trunk; The trunk connection components are installed at 1 / 3 to 1 / 2 of the trunk height.

[0041] At both ends of the cable (where it connects to the trunk and damper), use universal shackles or ball joints. This ensures that the cable can withstand pure tension in any direction of oscillation without bending stress due to angle issues, thus guaranteeing the accuracy of the tension sensor measurements and the durability of the entire system.

[0042] The root system primarily resists the horizontal pulling force that "uproots" the tree. The biomimetic anchoring device mainly provides elastic restraint in the horizontal direction, allowing the trunk to sway within a safe range, rather than being completely rigidly fixed. The elastic anchoring device is transformed into a "smart seatbelt system"—it doesn't prevent the tree from swaying, but rather sets a safe sway boundary and provides strong restraint when the tree is about to exceed that boundary. This simulates the process in natural root systems where lateral roots are tightly wrapped by the soil and provide frictional resistance. In low wind speed areas (e.g., <Force 6 winds), the electronically controlled damper is set to a low-damping state by the central controller. At this time, the elastic cable's own rubber core provides a gentle rebound force, allowing the trunk to sway freely and strengthen its own body. In high wind speed warning areas (e.g., ≥Force 6 winds): the controller receives a wind speed warning and preemptively increases the damping coefficient of the damper. At this time, the device enters a "ready state," applying significant resistance to the trunk's sway, constraining the sway amplitude within a smaller "safe range." In extreme wind zones (such as the eyewall of a typhoon): When the tension sensor detects that the tension is approaching the limit of the tree root system or the cable itself, the damper switches to its highest damping state, almost "locked in," providing maximum rigid constraint to prevent the tree from being uprooted. The cable's elasticity is not necessarily better the softer it is; its mechanical curve (tension-elongation curve) is designed so that this elastic cable is a progressive stiffness curve that is "soft initially, stiffer later." Initial stage (light wind): Easily stretched, providing elasticity. Later stage (strong wind): Stiffness increases sharply, providing strong constraint. A composite structure of "rubber core (providing initial elasticity) + high-strength fiber load-bearing layer (providing later strength)" can be achieved and perfectly meets biomimetic requirements.

[0043] Example 2: The difference from Example 1 is that, as shown in Example 2... Figures 4 to 6 As shown, a biomimetic elastic anchoring device for roadside trees consists of three anchoring units and a rigid structure fixedly connected to the outside of the anchoring units.

[0044] The rigid structure consists of several vertical baffles 13 fixed to the ground. The vertical baffles are also fixedly connected to the spiral anchors in the anchoring unit. (A more preferred option is that the part of the vertical baffle located below the ground is connected to the spiral anchor 3 via a connecting rod. One end of the connecting rod 14 is fixedly connected to the vertical baffle, and the other end of the connecting rod is hinged to a sleeve 15. The sleeve is fitted over the spiral anchor. With this arrangement, after the vertical baffles 13 are fixedly installed on the ground and placed around the anchoring unit, the spiral anchor can be screwed or drilled into the ground. Due to the sleeve 15, the installation of the spiral anchor is not interfered with, and the fixing strength of the spiral anchor is also strengthened.) Three or more vertical baffles can be set around the three anchoring units. If the number exceeds the number of anchoring units, only the vertical baffle 13 closest to the anchoring unit is fixedly connected to the spiral anchor 3. The sleeve 15 has four arc-shaped hinges 16 arranged in a circular array on its ground-facing opening. The hinge shaft of the arc-shaped hinge is equipped with a torsion spring and a limiting block to ensure that the hinge is always in the open state so that the ground-facing opening of the sleeve has an inward-turned edge (this type of hinge is existing technology and will not be described in detail).

[0045] In this embodiment, the elastic cable can be just an elastic cable; or, like in Embodiment 1, it can have a tension sensor, etc., and in that case, it also has a central controller.

[0046] A rigid structure is set outside the elastic structure (anchor unit), so that the elastic structure is fixedly connected to the rigid structure. In this way, when subjected to force (such as tension or push on the elastic structure during a typhoon), the anchor unit is protected on the one hand, and the roadside trees are facilitated to return to their original position on the other hand. The combination of "soft" and "hard" can also protect the elastic structure and avoid damage to the elastic structure when the typhoon is too strong. It can also truly achieve automatic reset (to prevent the elastic structure from being damaged when the typhoon wind is too strong, so that it cannot help the trees return to their original position). After the wind weakens, the elastic structure can help the trees return to their original position.

[0047] Example 3: The difference from Example 2 is that, as shown in Example 2... Figure 7 As shown, a biomimetic elastic anchoring device for roadside trees consists of three anchoring units and a semi-rigid structure connected to the outside of the anchoring units. The semi-rigid structure is a protective net 17 surrounding the outside of the anchor unit. The protective net is barrel-shaped and has a certain distance between it and the anchor unit.

[0048] By setting up a semi-rigid structure for the protective netting, it has a certain degree of freedom (when the typhoon winds are too strong, the elastic anchoring structure and / or roadside trees can also buffer some of the energy when they come into contact with the protective netting), and it can also protect the elastic structure (referring to the anchoring unit) and the roadside trees.

[0049] Example 4: The difference from Example 2 is that, as shown in Example 2... Figure 8As shown, the rigid structure consists of simulated soil or roadside tree soil blocks 18 fixed to the elastic cables of the anchor unit and branch elastic cables 19 fixed to the elastic cables 4. The simulated soil or roadside tree soil blocks 18 are placed on the roadside tree soil on the ground, and the branch elastic cables 19 are completely located within the simulated soil or roadside tree soil blocks. This embodiment does not use tensile sensors or other sensing units, but relies on anchor units that mimic the natural distribution of tree roots to improve typhoon resistance. The simulated soil consists of 50% sieved garden soil, 30% sand, and 20% perlite or vermiculite by mass. Calculate the target weight: Determine how much volume (V) of simulated soil is needed, and the target density (ρ). Total mass M = ρ * V.

[0050] Weigh each component: Weigh each material according to the formula ratio.

[0051] Mixing: Thoroughly and evenly mix all components in a container.

[0052] Add water: Slowly add distilled or deionized water while stirring until the substrate reaches the desired moisture level (e.g., field capacity). The density of water is 1 g / cm³, and adding water will significantly increase the overall density.

[0053] Verification: Take a container of known volume, fill it with the mixed matrix, weigh it, and calculate the actual density. Based on the result, fine-tune the ratio of sand to water.

[0054] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A biomimetic elastic anchoring device for roadside trees, characterized in that, It consists of a central controller and at least three anchor units.

2. The biomimetic elastic anchoring device for roadside trees according to claim 1, characterized in that, The anchoring units are arranged asymmetrically in a biomimetic radial pattern with the tree trunk as the center; each anchoring unit consists of a ground anchor component, an elastic cable component connected to the ground anchor component at one end, and a tree trunk connecting component connected to the tree trunk and the other end of the elastic cable component.

3. The biomimetic elastic anchoring device for roadside trees according to claim 2, characterized in that, The ground anchor assembly is a helical ground anchor; the elastic cable assembly consists of an elastic cable, a tension sensor, and an electrically controlled elastic damper, both of which are connected to the central controller signal.

4. The biomimetic elastic anchoring device for roadside trees according to claim 3, characterized in that, The trunk connection assembly consists of a wide flexible strap with a width of not less than 5cm and an elastic sheath; the elastic sheath is wrapped around the trunk, and the wide flexible strap is wrapped around the outside of the elastic sheath; a pressure sensor is provided on the inside of the flexible strap, and the pressure sensor is connected to the central controller signal.

5. The biomimetic elastic anchoring device for roadside trees according to claim 4, characterized in that, The elastic cable is a rope containing highly elastic rubber; the anchoring point of the spiral ground anchor is located outside the projection range of the tree root crown of the roadside tree; the spiral ground anchor is driven into the ground at an angle of 30-45 degrees with the horizontal plane, and its cable outlet direction is opposite to the tree trunk; the trunk connection component is installed at 1 / 3 to 1 / 2 of the tree trunk height.

6. A biomimetic elastic anchoring device for roadside trees, comprising at least three anchoring units and a rigid or semi-rigid structure fixedly connected to the outside of the anchoring units.

7. The biomimetic elastic anchoring device for roadside trees according to claim 6, characterized in that, The rigid structure consists of several vertical baffles fixed to the ground. The portion of the vertical baffles located below the ground is connected to the helical ground anchor via connecting rods. Several vertical baffles are arranged in a circular array around all the anchoring units.

8. The biomimetic elastic anchoring device for roadside trees according to claim 7, characterized in that, The biomimetic elastic anchor device also includes a central controller.

9. A method for promoting root growth and preventing typhoon damage in roadside trees, employing a biomimetic elastic anchoring device as described in any one of claims 1-8, characterized in that, Includes the following steps: S1: Determine at least one anchoring point in the outer area of ​​the root system of the roadside trees; S2: Install the anchor unit at the anchoring point to anchor it in the soil; S3: Determine the connection point on the trunk or main branch of the roadside tree and install the trunk connection component; S4: Connect the spiral anchor and the trunk connection assembly through the elastic cable assembly, and apply a preload to keep the elastic cable in a stretched state; The pre-tensioning force applied by the elastic cable generates continuous micro-stress in the soil of the tree root area, which stimulates the roots of the roadside trees to grow adaptively in order to resist the stress, thereby promoting root development.

10. The method for promoting root growth and preventing typhoons for roadside trees according to claim 9, characterized in that, The method further includes step S5: applying a bio-fertilizer or nutrient agent that promotes root growth to the soil in the area where the spiral anchor is installed.

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