A cable anchorage end energy absorption and vibration damping device imitating the vein structure of Victoria amazonica leaf and its operation method

Abstract

The present invention discloses a cable anchor end energy absorption and vibration reduction device imitating the leaf vein structure of Victoria amazonica and its operation method. The device disperses and transfers the load to the connection bottom surface through a multi-level leaf vein structure, thereby improving the bearing capacity of the connector and effectively reducing the stress concentration problem existing in traditional rope anchors. At the same time, the staggered structure between the leaf veins forms a unit lattice, which improves the stability of the leaf vein structure and avoids the phenomenon of instability and deformation during the load-bearing process. At the same time, the presence of the lattice structure enables the leaf vein as a whole to have a certain deformation capacity. The presence of the leaf bottom plate ensures the integrity of the structure and avoids the local leaf vein structure from being overstretched and deformed to cause damage when bearing a large load. The lattice structure is combined with the leaf bottom plate. When the impact load is transmitted to the leaf vein structure, the leaf vein drives the leaf bottom plate to deform and store and absorb energy. When the force is released, the leaf bottom plate vibrates and dissipates energy. The combination of the multi-level leaf vein structure and the lattice structure can disperse the load and dissipate the impact energy, thereby improving its own ability to resist pull-out and impact loads.

Description

Technical Field

[0001] The present invention relates to the fields of construction engineering, road and bridge engineering, and vehicle engineering, and particularly relates to an energy-absorbing and vibration-damping device for a cable anchoring end imitating the vein structure of a Victoria amazonica leaf, which can be specifically applied to designs such as cable anchoring and vehicle shock absorption. Background Art

[0002] In the fields of construction, bridges, machinery and other engineering fields, the performance of the steel cable anchoring end often has an important impact on whether the equipment can work properly. However, traditional steel cable anchoring ends have certain limitations and deficiencies when facing impacts and vibrations. These deficiencies mainly include the following aspects: First, the rigid structure of traditional steel cable anchoring ends makes it difficult to absorb and disperse energy when subjected to impacts and vibrations, resulting in the impact force being directly transmitted to the fixed structure or equipment, which may cause the steel cable to break and even may cause damage or destruction of the structure; Second, the steel cable anchoring end has poor adaptability to periodic vibrations or impact loads. Under frequent vibration or impact loads, the steel cable anchoring end is prone to fatigue and damage, thus reducing its long-term reliability and service life. Therefore, it is crucial to reduce the impacts and vibrations on the steel cable anchoring end. Traditional energy-absorbing and vibration-damping devices often have problems such as large weight, large volume and complex installation. Therefore, there is a need for a novel cable anchoring end that can overcome these problems and provide better impact resistance and vibration absorption performance.

[0003] Bionics has been applied to various academic fields in recent years. The biological structures in nature have provided new ideas and theories for human scientific and technological innovation. There have long been reports such as "Victoria amazonica carrying people". Through observation, it is found that the vein structure on the back of the Victoria amazonica leaf endows the Victoria amazonica leaf with excellent load-bearing and punching shear resistance capabilities; the branching structure of the Victoria amazonica leaf veins and the sickle-shaped diaphragms between the main veins form an excellent reticular skeleton. The veins on the back of the leaf are thick and raised, radially distributed from the center to the periphery, with radial symmetry. The main vein extends to the bottom, getting thinner from thick, ensuring the integrity of the leaf and improving its ability to resist local damage, thus having stability. The vein structure of the Victoria amazonica leaf enables it to grow in an aquatic environment and withstand the impact force of water flow, which has important reference significance for the design of related engineering structures. Summary of the Invention

[0004] Objective of the Invention: To overcome the deficiencies of the prior art, the present invention provides an energy-absorbing and vibration-damping device for the cable anchorage end with a structure imitating the vein structure of a Victoria leaf, which has a lower weight, a compact volume, and a more simplified installation process. At the same time, it can effectively absorb and disperse impact and vibration energy, providing better vibration-damping and protection performance for structures in the engineering field. The energy-absorbing and vibration-damping part adopts the structure of a bionic Victoria leaf vein, which has flexibility and compressive capacity to effectively absorb and disperse external impact and vibration energy. The application of this bionic structure can significantly reduce the impact and vibration on the structure, improve the stability and safety of the structure, simplify the installation and maintenance process, and improve the reliability and service life of the system.

[0005] Technical Solution: An energy-absorbing and vibration-damping device for the cable anchorage end with a structure imitating the vein structure of a Victoria leaf, the device consists of an energy-absorbing disc, an outer support shell, a cable, a reaction fastener, and a cable outer sleeve. The outer cable of the cable is fixed to the multi-level vein structure of the energy-absorbing disc through the reaction fastener. At the same time, on the end section of the outer cable, a side anchoring device is set, and the side anchoring device is embedded in the concrete structure to prevent the outer cable from sliding when being tensioned. The central cable of the cable passes through the central hole of the energy-absorbing disc and is fixed at the position close to the energy-absorbing disc by the bottom anchoring, being connected as a whole with the energy-absorbing disc. The cable passes through the cable hole of the outer support shell at the upper part. The leaf surface bottom plate of the energy-absorbing disc is installed in alignment with the vertical limit slot of the outer support shell to restrict the vertical deformation between the two. At the same time, the limit block of the energy-absorbing disc is installed in alignment with the circumferential limit slot of the outer support shell to restrict the torsional deformation between the two. The cable outer sleeve is installed outside the cable hole of the outer support shell and sleeves the cable to isolate the contact between the cable and the external concrete and prevent the concrete from restricting the sliding of the cable. As an energy-absorbing device in the cable anchorage end, this device is integrally buried in the concrete, provides an anchoring reaction force through the outer support shell, and uses the energy-absorbing disc to absorb the sudden load transmitted by the cable.

[0006] The energy-absorbing disc consists of a three-level branched vein structure with variable height, circumferential ribs, and a leaf surface bottom plate. And a central hole is provided in the center for the central cable of the cable to pass through. Six three-level branched vein structures with variable height are arranged circumferentially and evenly, and the circumferential ribs are arranged at the head and tail and the midpoint of each level of branches.

[0007] The three-level branched vein structure with variable height has three levels, and the branch height decreases gradually and evenly with the increase of the radius, and the branch width also decreases gradually level by level. According to the actual proportion of plants, it is set to 4:3:2. And fastener platforms are provided at the head and tail sections of each level of structure for installing reaction fasteners. At the end of the vein structure, a section extends as a limit block, and a cable end protection hole is provided on its upper part to protect the outer cable of the cable from being cut by the relative movement between the outer support shell and the energy-absorbing disc. The forking angles of each level of branches are the same, all 60°, and the angle bisector coincides with the extension line of the upper-level branch, forming a fractal structure.

[0008] The described outer support shell is generally in a bowl-shaped structure. A reaction platform corresponding to the fastener platform of the energy-absorbing disc is provided on the bottom surface of the inner wall to provide a vertical upward reaction force for the reaction fastener. Vertically-limiting notch grooves are provided in the circumferential direction of the inner wall to restrict the vertical deformation of the leaf surface bottom plate of the energy-absorbing disc. At the same time, circumferential-limiting notch grooves and the limiting blocks of the energy-absorbing disc are provided to jointly limit the torsional deformation between the two. Mechanical key grooves are provided on the outer wall to form a mechanical connection with the external concrete to prevent the overall sliding of the device. At the center of the outer support shell, a cable hole is provided for passing the cable and providing a position for the installation of the cable sleeve.

[0009] The described cable is a general multi-strand steel wire cable. When installed in this device, the cable is divided into a central cable and an outer layer cable. This division is only for illustrative description, and each cable can still be composed of multiple strands wound. The whole cable penetrates into the device through the cable hole of the outer support shell. The central cable passes through the central hole of the energy-absorbing disc, and a bottom anchor is installed at a position close to the bottom surface of the energy-absorbing disc. The central cable will directly bear most of the tensile loads under normal working conditions. When the cable is subjected to tension, the force will be transmitted from the bottom anchor to the energy-absorbing disc, and the energy-absorbing disc will transmit the load to the outer support shell and further to the external concrete. The outer layer cable is distributed along the three-level leaf veins of the energy-absorbing disc and bifurcates as the leaf veins bifurcate. It is fixed by the reaction fastener and extends out of the device at the end. A side anchor device is installed at the end of the cable and buried in the external concrete to prevent the cable from sliding. When the end of the outer layer cable is anchored, when the cable is subjected to a sudden load, the outer layer cable will be tightened, and the load inside the cable will be transmitted through the reaction fastener to the multi-level leaf veins and further to the leaf surface bottom plate. The cable, together with the reaction fastener, bottom anchor and side anchor device, acts together to make the device an integral whole and can effectively transmit and absorb loads.

[0010] The described reaction fastener consists of a clamping piece, a fixing screw and a reaction spring. The reaction fastener is arranged at the bifurcations of the multi-level leaf veins of the energy-absorbing disc. The clamping piece is used to fix the outer layer cable and is fixed to the multi-level leaf veins by the fixing screw. The reaction spring is in a compressed state in the overall device. When the cable is subjected to a sudden load, the cable drives the energy-absorbing disc to move upward, further compressing the reaction spring to provide a surface pressure for the energy-absorbing disc, so that the whole energy-absorbing disc is under load.

[0011] The operation method of a cable anchoring end energy-absorbing and vibration-damping device imitating the leaf vein structure of Victoria amazonica includes the following steps:

[0012] First, install the cable on the energy-absorbing disc;

[0013] Install the reaction fastener;

[0014] Install the bottom anchor and the side anchor device;

[0015] Install the outer support shell;

[0016] Install the cable sleeve, and the installation of the device body is completed.

[0017] The device is embedded in concrete and the cables are tensioned, allowing it to begin anchoring and absorbing energy. The device is based on an energy-absorbing disc with a structure modeled after the veins of a Victoria amazonica leaf. When the cables drive the disc's displacement, surface pressure is applied to it via reaction fasteners and an external support shell, absorbing the energy from sudden loads. Without violating the core spirit of this patent, by modifying the external support shell and cable structure, the device can also be used in applications such as vehicle shock absorption.

[0018] Beneficial effects: Compared with the prior art, the present invention has the following features:

[0019] The use of Victoria amazonica as a biomimetic model, leveraging the structural advantages of its dorsal veins, is of significant value. Through a multi-level vein structure, the load is dispersed and transferred to the bottom surface of the connection, improving the bearing capacity of the connector and effectively reducing the stress concentration problem that exists in traditional rope anchors. Furthermore, the interlaced structure between the veins forms a unit lattice, enhancing the stability of the vein structure and preventing instability and deformation during load. The lattice structure also gives the veins a certain degree of deformation capacity.

[0020] Vibration energy is absorbed by energy-absorbing discs that mimic the veins of Victoria amazonica leaves, effectively protecting the cable anchorage from the effects of impact loads. The presence of the leaf base ensures structural integrity, preventing damage caused by excessive stretching and deformation of the local vein structure when subjected to large loads. The lattice structure is combined with the leaf base. When impact loads are transmitted to the leaf vein structure, the veins drive the leaf base to deform, storing and absorbing energy. When the force is released, the leaf base vibrates and dissipates energy. The multi-level leaf vein structure combined with the lattice structure can disperse loads and dissipate impact energy, improving its ability to resist pullout and impact loads.

[0021] Prefabricated engineering is simple and easy to implement, requires little material, has low production costs, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the cable anchor end energy absorption device structure imitating the vein structure of Victoria amazonica leaf;

[0023] Figure 2 Exploded view of the cable anchor end energy absorption device imitating the leaf vein structure of Victoria amazonica;

[0024] Figure 3 Schematic diagram of the energy absorbing disc structure;

[0025] Figure 4 Schematic diagram of the energy absorbing disc structure;

[0026] Figure 5 Schematic diagram of the outer supporting shell structure;

[0027] Figure 6 Schematic diagram of the cable and its anchorage;

[0028] Figure 7 Schematic diagram of the reaction force fastener

[0029] Figure 8 Schematic diagram of the installation positions of the cable and the reaction force fastener;

[0030] Figure 9 Schematic cross - sectional view of the energy - absorbing device at the cable anchorage end with the structure imitating the vein of Victoria leaf;

[0031] Figure 10 Schematic diagram of the working principle of the energy - absorbing device at the cable anchorage end with the structure imitating the vein of Victoria leaf;

[0032] Figure 11 Schematic diagram of the assembly process of the energy - absorbing device at the cable anchorage end with the structure imitating the vein of Victoria leaf.

[0033] Explanation of the main marks in the figure: 1 - energy - absorbing disc, 2 - outer supporting shell, 3 - cable, 4 - reaction force fastener, 5 - cable outer sleeve;

[0034] 101 - multi - level vein structure I, 102 - multi - level vein structure II, 103 - multi - level vein structure III;

[0035] 104 - fastener platform, 105 - limit block, 106 - cable end protection hole, 107 - leaf surface bottom plate, 108 - circumferential rib, 109 - central hole;

[0036] 201 - reaction force platform, 202 - circumferential limit notch, 203 - cable hole, 204 - vertical limit notch, 205 - mechanical keyway;

[0037] 301 - central cable, 302 - outer layer cable, 303 - bottom anchorage, 304 - side anchorage device;

[0038] 401 - clamping piece, 402 - fixing screw, 403 - reaction spring. Specific implementation manners

[0039] The present invention will be described in detail below with reference to the accompanying drawings:

[0040] In the description of the present invention, it should be clear that the words indicating directions such as up, down, inside, circumferential, etc. are descriptions made based on the relative positions of the components in the drawings, rather than that the components must be arranged in this direction in actual applications. Embodiment

[0041] As Figure 1 、 2, as shown in FIGS. 6 and 9, an energy-absorbing and vibration-damping device for a cable anchoring end imitating the vein structure of a Victoria leaf, comprising: an energy-absorbing disc 1, an outer supporting shell 2, a cable 3, a reaction fastener 4 and a cable outer sleeve 5. The outer supporting shell 2 is buckled on the energy-absorbing disc and fixed coaxially with it. The central cable 301 of the cable 3 is installed in the central hole of the energy-absorbing disc 1 and fixed, and the other end passes through the cable hole in the center of the outer supporting shell 2. The outer cable 302 is distributed on the surface of the energy-absorbing disc in a multi-branched structure and fixed. As a whole, this energy-absorbing and vibration-damping device for the cable anchoring end can effectively transfer and absorb loads. During use, it is integrally buried in concrete, and the outer supporting shell provides an anchoring reaction force, and the energy-absorbing disc is used to absorb the sudden load transmitted by the cable.

[0042] As Figure 2 , 4 , as shown in FIGS. 6, 8 and 9, the outer cable 302 of the cable 3 is fixed to the multi-level vein structure I 101, multi-level vein structure II 102, and multi-level vein structure III 103 of the energy-absorbing disc 1 through the reaction fastener 4; at the same time, on the end section of the outer cable 302, a side anchoring device 304 is provided, and the side anchoring device 304 is buried in the concrete structure to prevent the outer cable 302 from sliding when being tensioned. The central cable 301 of the cable 3 passes through the central hole 109 of the energy-absorbing disc and is fixed at the position close to the energy-absorbing disc by the bottom anchoring 303, being connected as a whole with the energy-absorbing disc 1. The cable 3 passes through the cable hole 203 of the outer supporting shell 2 at the upper part.

[0043] The leaf surface bottom plate 107 of the energy-absorbing disc 1 is installed in alignment with the vertical limiting notch 204 of the outer supporting shell 2 to restrict the vertical deformation between the two. At the same time, the limiting block 105 of the energy-absorbing disc 1 is installed in alignment with the circumferential limiting notch 202 of the outer supporting shell to restrict the torsional deformation between the two.

[0044] The cable outer sleeve 5 is installed outside the cable hole 203 of the outer supporting shell 2 and sleeves the cable 3, which is used to isolate the contact between the cable 3 and the external concrete and prevent the concrete from restricting the sliding of the cable. As an energy-absorbing device in the cable anchoring end, this device is integrally buried in concrete, the outer supporting shell provides an anchoring reaction force, and the energy-absorbing disc is used to absorb the sudden load transmitted by the cable.

[0045] As Figure 3 , 4 As shown in FIGS., the energy-absorbing disc described includes: a multi-level branched vein structure with variable height, a circumferential rib 108 and a leaf surface bottom plate 107. And a central hole 109 is provided in the center of the energy-absorbing disc for the central cable 301 of the cable 3 to pass through. Six three-level branched vein structures are evenly arranged circumferentially, and the circumferential rib 108 is arranged at the head and tail and the midpoint of each level of branches.

[0046] As Figure 3 , 4As shown in Figs. 8, the multi-level branched vein structure with variable height is a three-level branched vein structure with gradually decreasing height in sequence in this embodiment, having three levels: the first-level vein structure I 101, the second-level vein structure II 102, and the third-level vein structure III 103. The branch height decreases uniformly step by step with the increase of the radius, and the branch width also decreases step by step. In this embodiment, this ratio is set to 4:3:2. Fastening platforms 104 are provided at the head and tail segments of each level for installing the reaction fasteners 4. At the end of the vein structure, a section extends out as a limit block 105, and a cable end protection hole 106 is provided on its upper part to protect the outer cable 302 of the cable 3 from being cut by the relative movement between the outer support shell 2 and the energy absorption disc 1. The branching angles of each level of branches are the same, all being 60°, and the angle bisector coincides with the extension line of the upper-level branch, forming a fractal structure.

[0047] As Figure 5 , 10 shown, the outer support shell is in an overall bowl-shaped structure. A reaction platform 201 corresponding to the fastening platform 104 of the energy absorption disc 1 is provided on the inner wall bottom surface to provide a vertical upward reaction force for the reaction fasteners. In the circumferential direction of the inner wall, a vertical limiting notch 204 is provided to restrict the vertical deformation of the leaf surface bottom plate 107 of the energy absorption disc 1. At the same time, a circumferential limiting notch 202 and the limit block 105 of the energy absorption disc 1 are provided to jointly limit the torsional deformation between the two. A mechanical keyway 205 is provided on the outer wall to form a mechanical connection with the external concrete to prevent the overall sliding of the device. At the center of the outer support shell, a cable hole 203 is provided for passing through the cable 3 and providing a position for the installation of the cable sleeve 5.

[0048] As referred to Figure 6 , 10As shown, the cable is a general multi-strand steel wire cable. When installed in this device, the cable is split into a central cable 301 and an outer cable 302. This splitting is only for illustrative description here, and each cable is composed of multiple strands wound together. The whole cable penetrates through the cable hole 203 of the outer support shell 2. The central cable 301 passes through the central hole 109 of the energy absorption disc 1, and a bottom anchor 303 is installed at a position close to the bottom surface of the energy absorption disc. The central cable will directly bear most of the tensile loads under normal working conditions. When the cable is subjected to tension, the force will be transmitted from the bottom anchor 303 to the energy absorption disc, and the load will be transmitted by the energy absorption disc to the outer support shell 2 and further transmitted to the external concrete. The outer cable 302 is distributed along the three-level veins of the energy absorption disc 1 and bifurcates as the veins bifurcate. It is fixed by the reaction fastener 4 and extends out of this device at the end. A side anchor device 304 is installed at the end of the cable and buried in the external concrete to prevent the cable from slipping. When the end of the outer cable 302 is anchored, when the cable is subjected to a sudden load, the outer cable 302 will be tightened, and the load inside the cable will be transmitted through the reaction fastener 4 to the multi-level veins and further transmitted to the leaf surface bottom plate 107. The cable, together with the reaction fastener 4, the bottom anchor 303 and the side anchor device 304, acts together to make the device an integral whole and can effectively transmit and absorb energy.

[0049] As Figures 7 - 9 shown, the reaction fastener consists of a clamping piece 401, a fixing screw 402 and a reaction spring 403. The reaction fastener will be set at the bifurcation of the multi-level veins of the energy absorption disc 1. The cross-section of the clamping piece 401 is in the shape of "Ω", which is used to fix the outer cable 302 and is fixed to the multi-level veins by the fixing screw 402. One end of the reaction spring 403 is fixed on the clamping piece 401, and the other end abuts against the outer support shell. In the whole device, the reaction spring is in a compressed state. When the cable 3 is subjected to a sudden load, the cable drives the energy absorption disc 1 to move upward, further compressing the reaction spring 403 to provide surface pressure for the energy absorption disc 1, so that the whole energy absorption disc 1 is loaded and works.

[0050] As Figure 11 shown, the construction method of a cable anchoring end energy absorption and vibration reduction device with a structure imitating the veins of a water lily leaf includes the following steps:

[0051] First, install the cable 3 on the energy absorption disc 1. Pass the central cable 301 of the cable 3 through the central hole 109 of the energy absorption disc 1, and install the bottom anchor 303 at a position close to the bottom surface of the energy absorption disc.

[0052] Distribute the outer cable 302 along the three-level veins of the energy absorption disc 1 and bifurcate as the veins bifurcate. Install the reaction fastener 4 to fix the outer cable 302 and extend out of this device at the end.

[0053] Install the bottom anchor 303 and the side anchor device 304 to fix the ends of the central cable 301 and the outer cable 302.

[0054] Install the outer supporting shell 2. Align and install the leaf surface bottom plate 107 of the energy absorption disc 1 with the vertical limiting notch 204 of the outer supporting shell 2 to restrict the vertical deformation between the two. At the same time, align and install the limiting block 105 of the energy absorption disc 1 with the circumferential limiting notch 202 of the outer supporting shell 2 to restrict the torsional deformation between the two. The reaction spring 403 of the reaction fastener 4 is in a compressed state between the outer supporting shell 2 and the energy absorption disc 1.

[0055] Install the cable outer sleeve 5. The cable outer sleeve 5 is installed outside the cable hole 203 of the outer supporting shell 2 and sleighs the cable 3, and the installation of the device body is completed.

[0056] Embed the device into the concrete, tension the cable, and the device starts to play the role of anchoring and energy absorption. Provide the anchoring reaction force through the outer supporting shell, and use the energy absorption disc to absorb the sudden load transmitted by the cable.

[0057] Figure 10 Schematic diagram of the working principle of the cable anchoring end energy absorption device imitating the vein structure of the Victoria leaf. As Figure 10 shown:

[0058] (A) The cable outer sleeve isolates the cable from the concrete, ensures that the cable can slide, and transmits the load to the energy absorption disc;

[0059] (B) Mechanical keyways prevent slipping;

[0060] (C) The side anchoring is embedded in the concrete to prevent the outer cable from slipping off;

[0061] (D) The circumferential limiting notch and the limiting block of the energy absorption disc jointly restrict the torsional deformation between the two;

[0062] (E) The reaction fastener connects the outer cable and the energy absorption disc into a whole. When the cable is tensioned, it deforms together with the energy absorption disc;

[0063] (F) The outer supporting shell provides the reaction force for the whole device;

[0064] (G) The reaction spring provides the surface load and deformation space for the energy absorption disc;

[0065] (H) The vertical limiting notch restricts the position of the leaf surface bottom plate of the energy absorption disc. Generally, the load is transmitted to the outer supporting shell from here and further transmitted to the concrete;

[0066] (I) The energy absorption disc deforms and vibrates to dissipate energy;

[0067] (J) The bottom anchorage transfers the load to the energy-absorbing disc. The cable anchorage end energy-absorbing and vibration-damping device with the structure imitating the vein of Victoria leaf takes the energy-absorbing disc 1 with the structure imitating the vein of Victoria leaf as the main body. When the cable 3 drives the energy-absorbing disc 1 to displace, surface pressure is applied to the energy-absorbing disc 1 through the reaction fastener 4 and the outer supporting shell 2 to absorb the energy brought by the suddenly applied load. Without violating the spiritual core of this patent, under the condition of changing the appearance of the outer supporting shell and the cable structure, this device can also be applied to fields such as vehicle shock absorption. The load is transferred to the energy-absorbing disc through the force transfer device and the energy is absorbed through the vibration of the energy-absorbing disc, achieving the functions of impact resistance and energy-absorbing vibration damping.

[0068] The ends of the primary vein structure I 101, the secondary vein structure II 102, and the tertiary vein structure III 103 of the three-level branched vein structure of this device are respectively located on concentric circles with different radii, and the diameters are respectively represented by D1, D2, and D3, and the heights and thicknesses are respectively represented by H1, H2, H3 and W1, W2, W3. Since the energy-absorbing and vibration-damping effect of the energy-absorbing disc 1 is achieved through its own vibration and its own micro-deformation to coordinate the pulse load on the cable, according to the dynamic characteristics of the ribbed thin plate with four-sided consolidation, changing the width of the tertiary branch can effectively coordinate the deformation ability and energy dissipation ability of the energy-absorbing disc during operation. At the same time, according to the characteristics of plants themselves, the ratios of the heights and widths of different-level branches are the same. The relationship among the three is as follows:

[0069] D1 / D2 = 0.65

[0070] D2 / D3 = 0.66

[0071] H1 / W1 = H2 / W2 = H3 / W3 = 2 / 3

[0072] To obtain the optimal tertiary width distribution, taking the thickness b of the leaf surface bottom plate 107 as the reference value, then:

[0073] m = W1 / b

[0074] p = W2 / b

[0075] q = W3 / b

[0076] x = m / p

[0077] y = p / q

[0078] And taking m + p + q = 3b as the constraint condition for finding the optimal solution.

[0079] Among them, m is the ratio of the width of the primary vein structure I 101 to the thickness b of the leaf surface bottom plate 107;

[0080] p is the ratio of the width of the secondary vein structure II 101 to the thickness b of the leaf surface bottom plate 107;

[0081] q is the ratio of the width of the primary vein structure III101 to the thickness b of the leaf surface bottom plate 107;

[0082] b is the thickness of the leaf surface bottom plate 107.

[0083] The structural parameters are shown in Table 1.

[0084] During the test, the device is anchored in the concrete, a same pulse load is applied along the cable, the vibration time history curve on the cable is measured, and then the damping ratio ζ of the overall device is calculated as the measurement criterion. It can be seen from the results in Table 1 that when x = 1.333 and y = 1.5, that is, the width distribution of the third level is 4:3:2, the damping ratio is the largest and the energy dissipation performance is the best.

[0085] Table 1 Damping ratio magnitudes under different structural parameters

[0086] .

Claims

1. A cable anchor end energy absorption and vibration reduction device imitating the leaf vein structure of Victoria amazonica, characterized by: The device comprises: an energy absorbing disc (1), an outer supporting shell (2), a cable (3), a reaction fastener (4) and a cable outer sleeve (5); The outer supporting shell is buckled onto the energy absorbing disk, and the two are fixed coaxially. When in use, the whole is buried in concrete, and the anchoring reaction force is provided by the outer supporting shell and the reaction fastener, and the energy absorbing disk is used to absorb the sudden load transmitted by the cable (3); The cable is a multi-strand steel wire cable, which is split into a central cable (301) and an outer cable (302); the central cable (301) is installed in the central hole of the energy absorbing disk and fixed, and the other end passes through the cable hole in the center of the outer supporting shell (2); the outer cable (302) of the cable has a multi-branch structure and is distributed on the multi-level branched leaf vein structure on the surface of the energy absorbing disk and is fixed with the help of a reaction fastener (4).

2. The cable anchor end energy absorption and vibration reduction device with the imitation Victoria leaf vein structure according to claim 1 is characterized in that: The energy absorbing disk comprises: a multi-level branching leaf vein structure, annular ribs (108), a leaf bottom plate (107), and a center hole (109) provided at the center for passing the center cable (301) of the cable (3); the annular ribs (108) are arranged at the head, tail and midpoint of the multi-level branching leaf vein structure; a fastener platform (104) is provided at the head and tail sections of the multi-level branching leaf vein structure for installing the reaction fastener (4); at the end of the multi-level branching leaf vein structure, a section is extended as a limit block (105), and a cable end protection hole (106) is provided on the upper part thereof to protect the outer layer cable (302) of the cable (3) from being cut by the relative movement between the outer support shell (2) and the energy absorbing disk (1).

3. The cable anchor end energy absorption and vibration reduction device with the imitation Victoria leaf vein structure according to claim 1 is characterized in that: The multi-level branched leaf vein structure is evenly arranged in a circumferential direction on the surface of the energy absorbing disk. The branch height decreases evenly step by step with the increase of radius, and the branch width also decreases step by step. The angles of the multi-level branches are the same.

4. The cable anchor end energy absorption and vibration reduction device of the imitation Victoria amazonica leaf vein structure according to claim 2 or 3, characterized in that: The multi-level branched leaf vein structure is a three-level branched leaf vein structure, which includes, from the inside to the outside, a primary leaf vein structure I (101), a secondary leaf vein structure II (102), and a tertiary leaf vein structure III (103), six of which are evenly arranged in a circumferential direction, and the ratio of branch height and width is 4:3:2 at each level, and the angle of branch forking is 60°.

5. The cable anchor end energy absorption and vibration reduction device with an imitation Victoria leaf vein structure according to claim 1 or 2, characterized in that: The outer support shell is in a bowl-shaped structure as a whole. A reaction platform (201) corresponding to the fastener platform (104) of the energy absorbing disk (1) is provided on the bottom surface of the inner wall to provide a vertical reaction force for the reaction fastener (4); a vertical limit slot (204) is provided in the circumferential direction of the inner wall to constrain the vertical deformation of the blade bottom plate (107) of the energy absorbing disk (1); at the same time, the circumferential limit slot (202) and the limit block (105) of the energy absorbing disk (1) are provided to jointly limit the torsional deformation between the two; a mechanical keyway (205) is provided on the outer wall to form a mechanical connection with the external concrete to prevent the entire device from sliding; and a cable hole (203) is provided at the center of the outer support shell to pass the cable (3) and provide a position for installing the cable outer sleeve (5).

6. The cable anchor end energy absorption and vibration reduction device with the imitation Victoria amazonica leaf vein structure according to claim 1, characterized in that: The outer layer cable (302) of the cable (3) is fixed to the multi-level leaf vein structure of the energy absorbing disk (1) through the reaction fastener (4), and at the same time, a side anchoring device (304) is provided at the end of the outer layer cable (302), and the side anchoring device (304) is embedded in the concrete structure to prevent the outer layer cable (302) from sliding when being pulled; the central cable (301) of the cable (3) passes through the central hole (109) of the energy absorbing disk and is fixed with the bottom anchor (303) at a position close to the energy absorbing disk, and is connected to the energy absorbing disk (1) as a whole; the cable (3) passes through the cable hole (203) of the outer support shell (2) at the upper part.

7. The cable anchor end energy absorption and vibration reduction device with the imitation Victoria amazonica leaf vein structure according to claim 2, characterized in that: The blade bottom plate (107) of the energy absorbing disc (1) is mounted in alignment with the vertical limiting notch (204) of the outer supporting shell (2) to constrain vertical deformation between the two. Simultaneously, the limiting block (105) of the energy absorbing disc (1) is mounted in alignment with the annular limiting notch (202) of the outer supporting shell to constrain torsional deformation between the two.

8. The cable anchor end energy absorption and vibration reduction device with an imitation Victoria leaf vein structure according to claim 6, characterized in that: The entire cable is passed through the cable hole (203) of the outer supporting shell (2); The center cable (301) passes through the center hole (109) of the energy absorbing disc (1) and is installed with a bottom anchor (303) close to the bottom surface of the energy absorbing disc (1). The center cable (301) bears most of the tensile load in the working state. When the cable is tensile, the force will be transferred from the bottom anchor (303) to the energy absorbing disc (1), and the energy absorbing disc (1) will transfer the load to the outer supporting shell (2) and further to the external concrete. The outer layer cable (302) is distributed along the multi-level leaf veins of the energy absorbing disk (1), and bifurcates as the leaf veins bifurcate, is fixed by a reaction fastener (4), and extends out of the device at the end; a side anchoring device (304) is installed at the end of the cable and buried in the external concrete to prevent the cable from sliding; after the end of the outer layer cable (302) is anchored, when the cable is subjected to a sudden load, the outer layer cable (302) will be tightened and the load in the cable will be transferred to the multi-level leaf veins through the reaction fastener (4), and further transferred to the blade bottom plate (107); the cable, the reaction fastener (4), the bottom anchoring device (303) and the side anchoring device (304) work together to connect the device as a whole and effectively transfer the absorbed load; The cable outer sleeve (5) is installed outside the cable hole (203) of the outer supporting shell (2) and covers the cable (3), and is used to isolate the cable (3) from contact with external concrete, thereby preventing the concrete from constraining the cable (3) from sliding.

9. The cable anchor end energy absorption and vibration reduction device with a leaf vein structure imitating Victoria amazonica according to claim 6, characterized in that: The reaction fastener is composed of a clip (401), a fixing screw (402) and a reaction spring (403); the reaction fastener is arranged at the bifurcation of the multi-stage leaf veins of the energy absorbing disk (1); the clip (401) is used to fix the outer layer cable (302) and is fixed to the multi-stage leaf veins by the fixing screw (402); The reaction spring (403) is in a compressed state in the entire device. When the cable (3) is subjected to a sudden load, the cable (3) drives the energy absorbing disc (1) to move upward, further compressing the reaction spring (403) to provide surface pressure for the energy absorbing disc (1), so that the energy absorbing disc (1) as a whole is loaded and works.

10. The method for operating the cable anchor end energy absorption and vibration reduction device with the leaf vein structure imitating Victoria amazonica according to claim 9, characterized in that: (1) First, install the cable on the energy absorbing disc, pass the center cable (301) of the cable (3) through the center hole (109) of the energy absorbing disc (1), and install the bottom anchor (303) at a position close to the bottom surface of the energy absorbing disc; The central cable (301) bears most of the tensile load in the working state. When the cable is tensile, the force will be transferred from the bottom anchor (303) to the energy absorbing plate (1), and the energy absorbing plate (1) will transfer the load to the outer supporting shell (2) and further to the external concrete; (2) The outer layer of the cable (3) (302) is distributed along the multi-level leaf vein structure of the energy absorbing disk (1), and bifurcates along with the bifurcation of the leaf veins, and the reaction fastener (4) is installed to fix it, and the device is extended at the end; The reaction spring (403) is in a compressed state in the entire device. When the cable (3) is subjected to a sudden load, the cable (3) drives the energy absorbing disc (1) to move upward, further compressing the reaction spring (403) to provide surface pressure for the energy absorbing disc (1), so that the energy absorbing disc (1) as a whole can work under load. (3) Install a side anchoring device (304) at the end of the cable and bury it in the external concrete to prevent the cable from sliding; after the end of the outer cable (302) is anchored, when the cable is subjected to a sudden load, the outer cable (302) will be tightened and the load in the cable will be transferred to the multi-level leaf veins through the reaction fastener (4), and further transferred to the leaf bottom plate (107); the cable and the reaction fastener (4), the bottom anchoring device (303) and the side anchoring device (304) work together to connect the device as a whole and effectively transfer and absorb the load; (4) Install the outer supporting shell (2), and install the blade bottom plate (107) of the energy absorbing disk (1) and the vertical limit slot (204) of the outer supporting shell (2) in a positional manner to constrain the vertical deformation between the two. At the same time, the limit block (105) of the energy absorbing disk (1) and the circumferential limit slot (202) of the outer supporting shell are installed in a positional manner to constrain the torsional deformation between the two. (5) Install the outer sleeve (5) of the cable. The outer sleeve (5) of the cable is installed outside the cable hole (203) of the outer supporting shell (2) and covers the cable (3). The installation of the device body is completed; (6) The device is buried in the concrete, the cable is tensioned, and the device begins to play the role of anchoring and energy absorption. When the cable (3) drives the energy absorbing plate (1) to move, the reaction fastener (4) and the outer support shell (2) apply surface pressure to the energy absorbing plate (1) to absorb the energy brought by the sudden load.

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