Large-deformation multidirectional limiting inhaul cable device for bridge

Abstract

The utility model discloses a large-deformation multidirectional limiting inhaul cable device for a bridge, which comprises an anchoring component, a limiting component and an inhaul cable, and the limiting component is divided into an upper limiting component and a lower limiting component; the anchoring assembly is divided into an upper anchoring assembly and a lower anchoring assembly; the inhaul cable is mainly made of a novel negative Poisson's ratio (NPR) material. The anchoring assembly is pre-buried in a bridge structure at a bridge support and is used for mounting the limiting assembly; the interior of the limiting assembly is of a pottery-pot-shaped variable-diameter cavity structure, so that the two ends of the inhaul cable can be fixedly connected to the limiting assembly correspondingly, and therefore the whole inhaul cable device is formed, the device and a bridge support have the mutual synergistic effect, displacement deformation of a bridge is limited in multiple angles and multiple directions, the earthquake disaster resisting capacity of the whole bridge is improved, and the service life of the bridge is prolonged. And in addition, the device in the scheme is simple and clear in structural design, and installation, disassembly, maintenance and the like of the device in the scheme can be completed with relatively short time cost and relatively low economic cost.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping devices for improving the seismic performance of bridges in civil engineering. It is mainly used to limit the large deformation of the bridge as a whole at the epicenter, and particularly relates to a multi-directional limiting cable device for bridges that can deform greatly. Background Technology

[0002] Bridges, during their design and construction, generally need to adhere to relevant standards and policies to implement corresponding seismic resistance measures, thereby avoiding or mitigating casualties and economic losses caused by earthquakes. In bridge structures, bridge bearings are crucial force-transfer devices connecting the superstructure and substructure. They transfer the reaction forces and deformations of the superstructure to the substructure, ensuring a balanced and reasonable overall stress distribution on the bridge structure. Therefore, they are one of the key components requiring attention in the seismic design of bridges.

[0003] Currently, there are many types of traditional bridge seismic bearings in use, including friction pendulum bearings, plate rubber bearings, and seismic pot bearings. These bearings can effectively mitigate the impact of earthquakes on bridges in the horizontal direction, significantly improving the overall seismic resistance of bridges. However, they are somewhat insufficient in the vertical direction. Although various new types of bridge bearings are emerging, many of which can limit the impact of earthquakes on bridges in the vertical direction to varying degrees, most have limitations such as high cost or difficult construction, making their practicality and applicability limited. Therefore, it is necessary to propose a bridge device that can effectively mitigate the impact of earthquakes on bridges in both the vertical and horizontal directions, while also being flexible, easy to construct and maintain, thereby extending the service life of bridges and further improving their overall seismic performance.

[0004] In addition, it should be noted that because bridge bearings are usually located in relatively narrow spaces and have relatively complex structures, repairing them often requires a long time and high economic costs, which brings difficulties to the daily maintenance, installation and disassembly of the bearings. Summary of the Invention

[0005] In view of this, the purpose of this utility model is to propose a bridge cable device with large deformation and multidirectional limiting, which is simple in structure, reliable in implementation, convenient in application, and has good application results.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A bridge-use multi-directional cable-stayed device with large deformation capacity, comprising:

[0008] Upper anchoring components are pre-embedded in the bridge superstructure at the bridge bearings;

[0009] The lower anchoring component is embedded in the substructure of the bridge at the bridge bearing and is opposite to the upper anchoring component.

[0010] The upper limit component is fixedly connected to the upper anchoring component;

[0011] The lower limit component is fixedly connected to the lower anchoring component and is opposite to the upper limit component;

[0012] The cable has one end inserted upward into the upper limit component and fixedly connected to it, and the other end inserted downward into the lower limit component and fixedly connected to it.

[0013] As one possible implementation, the upper anchoring component of this solution further includes an upper anchoring body, which is a cylindrical structure with one end open, and its closed end is embedded in the superstructure of the bridge at the bridge bearing.

[0014] Accordingly, the lower anchoring assembly includes a lower anchoring body, which is a cylindrical structure with one end open, and its closed end is embedded in the substructure of the bridge at the bridge bearing.

[0015] The virtual axes of the upper anchoring body and the lower anchoring body coincide; the upper limit component is fixedly connected inside the cylindrical structure of the upper anchoring body, and the lower limit component is fixedly connected inside the cylindrical structure of the lower anchoring body.

[0016] As a preferred implementation option, the outer side of the open end of the upper anchoring body is preferably connected to a first square steel plate with a square outer contour, and the middle part of the first square steel plate is provided with a first clearance hole corresponding to the outer periphery of the upper anchoring body; the outer side of the open end of the lower anchoring body is preferably connected to a second square steel plate with a square outer contour, and the middle part of the second square steel plate is provided with a second clearance hole corresponding to the outer periphery of the lower anchoring body.

[0017] As a preferred implementation option, the first square steel plate is pre-embedded in the superstructure of the bridge at the bridge bearing, or the lower end face of the first square steel plate is flush with the surface of the superstructure of the bridge at the bridge bearing; the second square steel plate is pre-embedded in the substructure of the bridge at the bridge bearing, or the lower end face of the second square steel plate is flush with the surface of the substructure of the bridge at the bridge bearing.

[0018] As a preferred implementation option, preferably, both the upper anchoring body and the lower anchoring body of this scheme are provided with an anchoring steel bar at their ends away from their open ends; the cable is made of a negative Poisson's ratio material; and the outer periphery of the cable is covered with a rubber layer.

[0019] As a preferred implementation option, the upper limit assembly of this solution preferably includes an upper limit body with a cylindrical structure, the outer contour of which is adapted to the inner wall of the cylindrical structure of the upper anchoring body, and the upper limit body is threadedly connected and fixed to the inner wall of the cylindrical structure of the upper anchoring body; the lower limit assembly includes a lower limit body with a cylindrical structure, the outer contour of which is adapted to the inner wall of the cylindrical structure of the lower anchoring body, and the lower limit body is threadedly connected and fixed to the inner wall of the cylindrical structure of the lower anchoring body.

[0020] One end of the cable is inserted upward into the cylindrical structure of the upper limit body and fixedly connected to the upper limit body, while the other end is inserted downward into the cylindrical structure of the lower limit body and fixedly connected to the lower limit body.

[0021] As a preferred implementation option, the upper limit body of this solution is provided with a first horizontal extension on the outer periphery of the end near the open end of the upper anchoring body, and the first horizontal extension is in contact with the first square steel plate; the lower limit body is provided with a second horizontal extension on the outer periphery of the end near the open end of the lower anchoring body, and the second horizontal extension is in contact with the second square steel plate.

[0022] As a preferred implementation option, the upper limit body of this solution is provided with a first polygonal protrusion at the end near the open end of the upper anchoring body, which is used to cooperate with an external auxiliary tool to facilitate the threaded connection between the upper limit body and the upper anchoring body; the lower limit body is provided with a second polygonal protrusion at the end near the open end of the lower anchoring body, which is used to cooperate with an external auxiliary tool to facilitate the threaded connection between the lower limit body and the lower anchoring body.

[0023] As a preferred implementation option, the upper limit body of this solution is preferably connected to the upper anchoring body at a closed structure, with a first variable diameter cavity that is wider inside and narrower outside; the lower limit body has a second variable diameter cavity that is wider inside and narrower outside.

[0024] The first and second diameter-changing cavities are both filled with concrete layers to fix the ends of the cable within them.

[0025] As a preferred implementation option, the lower anchoring body of this solution is provided with an axially extended cylindrical structure at the end away from its open end. The inner diameter of the axially extended section is smaller than the inner diameter of the cylindrical structure of the lower anchoring body. Both ends of the lower limiting body are open ends. After the lower limiting body is threadedly connected to the lower anchoring body, the second variable diameter cavity communicates with the axially extended section, allowing the other end of the cable to be inserted downward into the axially extended section.

[0026] This solution provides a bridge-use, highly deformable, multi-directional limiting cable device that works in conjunction with bridge supports to restrict bridge displacement and deformation in multiple angles and directions, thereby improving the bridge's overall resistance to earthquakes and extending its service life. Furthermore, the device's structural design is simple and straightforward, allowing for installation, disassembly, maintenance, and repair in a relatively short time and at a low economic cost, while ensuring basic seismic performance.

[0027] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: This solution pre-embeds the upper and lower anchoring components in the upper and lower parts of the bridge structure at the bridge bearing, respectively, and then threads the upper and lower limiting components to the upper and lower anchoring components, respectively. This makes the installation of the limiting components highly flexible and convenient. In particular, since both ends of the cable are fixedly connected to the upper and lower limiting components, the cable and limiting components can be easily installed and disassembled. This allows the device to be easily removed and moved together by rotating the threads when it needs to be replaced under certain conditions, without requiring... Removing the anchorage components embedded in the bridge avoids damage to the bridge structure, representing a non-destructive removal. Furthermore, the cables primarily use negative Poisson's ratio (NPR) materials, giving them a degree of flexibility. This facilitates the installation and dismantling of the device in the already confined space of bridge supports. Benefiting from the unique properties of the cable's special material, which also possesses a certain degree of hardness and strength, it can effectively limit the bridge's displacement and deformation in various directions, providing multi-directional restraint capabilities. Moreover, relevant research indicates that compared to traditional cables, which typically exhibit a strain rate of 10 under dynamic loads, this method offers significant advantages. -3 / s -1 ~10 -1 / s -1 For steel strands made of high-strength steel with a range of fluctuations, the typical strain rate of metal-based negative Poisson's ratio (NPR) materials is typically around 10. 2 / s -1 ~10 3 / s -1 Inside is 10% of the steel strand material. 3 ~10 6 The ratio is not equal to that of steel strands. Therefore, this solution uses negative Poisson's ratio (NPR) materials to make cables, which are significantly better than traditional steel strand materials. They can exhibit better toughness and strength, better adapt to large deformations, ensure performance continuity, and can be used for a long time. Furthermore, when working together with bridge bearings, they play a role in damping and isolation, thereby comprehensively improving the seismic performance of the overall bridge structure. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a simplified schematic diagram of the cable device in application of this scheme;

[0030] Figure 2 This is a simplified schematic diagram of the cable-stayed device in this scheme;

[0031] Figure 3 This is a simplified three-dimensional view of the upper and lower anchoring components of the cable device in this scheme.

[0032] Figure 4 This is a simplified two-dimensional cross-sectional schematic diagram of the upper and lower anchoring components of the cable device in this scheme.

[0033] Figure 5 This is a simplified three-dimensional view of the upper limit component and lower limit component of the cable device in this scheme.

[0034] Figure 6 This is a simplified two-dimensional cross-sectional schematic diagram of the upper limit component and lower limit component of the cable device in this scheme;

[0035] Figure 7 This is a simplified schematic diagram of the application and implementation of the cable device in this scheme;

[0036] Figure 8 This is a geometric deformation diagram of the cable in the cable-stayed device of this scheme;

[0037] Figure 9 This is a load-horizontal displacement curve of the cable in this cable-stayed system.

[0038] Figure 10 This is a load-vertical displacement curve of the cable in this cable system. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0040] like Figures 1 to 7 As shown in one embodiment, this invention provides a bridge-use multi-directional limiting cable device with large deformation capacity, comprising:

[0041] Upper anchoring component 1 is pre-embedded in the bridge superstructure at the bridge bearing;

[0042] The lower anchoring component 2 is embedded in the substructure of the bridge at the bridge bearing and is opposite to the upper anchoring component 1.

[0043] The upper limit component 3 is fixedly connected to the upper anchoring component 1;

[0044] The lower limit component 4 is fixedly connected to the lower anchoring component 2 and is opposite to the upper limit component 3;

[0045] One end of the cable 5 is inserted upward into the upper limit component 3 and fixedly connected to the upper limit component 3, while the other end is inserted downward into the lower limit component 4 and fixedly connected to the lower limit component 4.

[0046] In this scheme, both the upper anchoring component 1 and the lower anchoring component 2 can be pre-deployed during bridge structure construction by pre-embedding. As an example of a possible implementation of the anchoring components, the upper anchoring component 1 in this scheme further includes an upper anchoring body 11, which is a cylindrical structure with one open end, and its closed end is pre-embedded in the superstructure of the bridge at the bridge bearing. Correspondingly, the lower anchoring component 2 includes a lower anchoring body 21, which is a cylindrical structure with one open end, and its closed end is pre-embedded in the substructure of the bridge at the bridge bearing.

[0047] In this scheme, the positions and specifications of the upper anchoring body 11 and the lower anchoring body 21, the upper limit component 3 and the lower limit component 4 are all corresponding, and the virtual axes of the upper anchoring body 11 and the lower anchoring body 21 coincide; the upper limit component 3 is fixedly connected inside the cylindrical structure of the upper anchoring body 11, and the lower limit component 4 is fixedly connected inside the cylindrical structure of the lower anchoring body 21.

[0048] To improve the pre-embedded reliability of the anchor body, as a preferred implementation option, the outer side of the open end of the upper anchor body 11 is preferably connected to a first square steel plate 12 with a square outer contour, and the middle part of the first square steel plate 12 is provided with a first clearance hole corresponding to the outer periphery of the upper anchor body 11; the outer side of the open end of the lower anchor body 21 is connected to a second square steel plate 22 with a square outer contour, and the middle part of the second square steel plate 22 is provided with a second clearance hole corresponding to the outer periphery of the lower anchor body 21.

[0049] In this scheme, the pre-embedding depth of the device can be determined by recording the thickness of the first square steel plate 12 and the second square steel plate 22, combined with their height exposed on the bridge structure. As a preferred implementation option, the first square steel plate 12 is partially pre-embedded in the superstructure of the bridge at the bridge bearing, or the lower end face of the first square steel plate 12 is flush with the surface of the superstructure of the bridge at the bridge bearing; the second square steel plate 22 is partially pre-embedded in the substructure of the bridge at the bridge bearing, or the lower end face of the second square steel plate 22 is flush with the surface of the substructure of the bridge at the bridge bearing. In this scheme, the first square steel plate 12 and the second square steel plate 22 can also increase the contact surface between the anchor body and the bridge structure, thereby increasing the fastening strength of the pre-embedding.

[0050] To ensure that the device in this scheme can be well fixed to the bridge structure, as a preferred implementation option, an anchoring steel bar 6 is provided on the ends of both the upper anchoring body 11 and the lower anchoring body 21 away from their open ends. In this scheme, the anchoring steel bar 6 is cast into the bridge structure together with the anchoring component using concrete. It is used to enhance the anchoring strength between the anchoring component and the bridge structure and to prevent the anchoring component from accidentally falling off and causing the device in this scheme to fail.

[0051] Regarding the connection method of the anchoring component and the connecting component, as a preferred implementation option, the upper limit component 3 of this solution preferably includes an upper limit body 31 with a cylindrical structure, the outer contour of which is adapted to the inner wall of the cylindrical structure of the upper anchoring body 11, and the upper limit body 31 is threadedly connected and fixed to the inner wall of the cylindrical structure of the upper anchoring body 11; in this solution, the outer periphery of the upper limit body 31 is provided with an external thread structure 311, and correspondingly, the inner wall of the cylindrical structure of the upper anchoring body 11 is provided with an internal thread structure 111 that cooperates with it.

[0052] In this solution, the lower limiting component 4 includes a lower limiting body 41 with a cylindrical structure. Its outer contour is adapted to the inner wall of the cylindrical structure of the lower anchoring body 21. The lower limiting body 41 is threadedly connected and fixed to the inner wall of the cylindrical structure of the lower anchoring body 21. In this solution, the outer periphery of the lower limiting body 41 is provided with an external thread structure 411. Correspondingly, the inner wall of the cylindrical structure of the lower anchoring body 21 is provided with an internal thread structure 211 that cooperates with it.

[0053] In this design, the anchoring components (upper anchoring component 1 and lower anchoring component 2) and the limiting components (upper limiting component 3 and lower limiting component 4) are fixed to the bridge structure together via threaded connections. This ensures the integrity and stability of the entire device. Furthermore, the threaded connection between the anchoring components (upper anchoring component 1 and lower anchoring component 2) and the limiting components (upper limiting component 3 and lower limiting component 4) also prevents poured concrete from leaking out from the joint between them, ensuring smooth and unobstructed disassembly of the limiting components (upper limiting component 3 and lower limiting component 4) and the cable 5. The cable 5, located between the upper limiting component 3 and the lower limiting component 4, is the core load-bearing component in this design.

[0054] One end of the cable 5 is inserted upward into the cylindrical structure of the upper limit body 31 and fixedly connected to the upper limit body 31, while the other end is inserted downward into the cylindrical structure of the lower limit body 41 and fixedly connected to the lower limit body 41.

[0055] As a preferred implementation option, the upper limit body 31 of this solution is provided with a first horizontal extension 32 on the outer periphery of the end near the open end of the upper anchoring body 11, and the first horizontal extension 32 is in contact with the first square steel plate 12; the lower limit body 41 is provided with a second horizontal extension 42 on the outer periphery of the end near the open end of the lower anchoring body 21, and the second horizontal extension 42 is in contact with the second square steel plate 22.

[0056] To facilitate the connection between the limiting body and the anchoring body, as a preferred implementation option, the upper limiting body 31 of this solution preferably has a first polygonal protrusion 33 at its end near the open end of the upper anchoring body 11. This protrusion is used to cooperate with an external auxiliary tool to facilitate a threaded connection between the upper limiting body 31 and the upper anchoring body 11. The lower limiting body 41 has a second polygonal protrusion 43 at its end near the open end of the lower anchoring body 21. This second polygonal protrusion 43 is used to cooperate with an external auxiliary tool to facilitate a threaded connection between the lower limiting body 41 and the lower anchoring body 21. Both the first polygonal protrusion 33 and the second polygonal protrusion 43 can be hexagonal structures.

[0057] Regarding the internal structure of the limiting body, as a preferred implementation option, the end of the upper limiting body 31 connected to the upper anchoring body 11 in this solution is a closed structure, and a first variable diameter cavity 312 with a larger inner diameter and a narrower outer diameter is formed inside it; the lower limiting body 41 has a second variable diameter cavity 412 with a larger inner diameter and a narrower outer diameter inside it.

[0058] The first variable diameter cavity 312 and the second variable diameter cavity 412 are both filled with concrete layers 3121 and 4121 to fix the end of the cable 5 therein.

[0059] In this design, the first variable diameter cavity 312 and the second variable diameter cavity 412 can be designed similar to a ceramic jar, and the sharp corners of their inner walls are rounded to ensure the smoothness and flatness of the inner wall surface and prevent premature damage.

[0060] To facilitate the installation of the cable 5, as a preferred implementation option, the lower anchoring body 21 of this solution preferably has an axially extending portion 23 of a cylindrical structure at its end away from its open end. The inner diameter of the axially extending portion 23 is smaller than the inner diameter of the cylindrical structure of the lower anchoring body 21. Both ends of the lower limiting body 41 are open ends. After the lower limiting body 41 is threadedly connected to the lower anchoring body 21, the second variable diameter cavity 412 communicates with the axially extending portion 23, allowing the other end of the cable 5 to be inserted downwards into the axially extending portion 23. To ensure that the cable 5 can be successfully fixed and to fully utilize the anti-seismic effect of this utility model device, the main bodies of the upper limiting component 3 and the lower limiting component 4 are both located on the same central vertical line, and the circular holes at the center of both are coaxial, that is, the circular holes at the center of the anchoring component and the limiting component are continuous and have the same centerline.

[0061] In this design, the cable 5 is made of a negative Poisson's ratio material; the outer periphery of the cable 5 is covered with a rubber layer. Because the cable 5 is made of a negative Poisson's ratio material, which has the unique property of "expanding laterally when stretched and contracting laterally when compressed," it is called a negative Poisson's ratio (NPR) material, also known as a "tensile expansion material." Regarding the length control of the cable 5, its length can be set within the space accommodated between the upper limit component 3 and the lower limit component 4. The main negative Poisson's ratio (NPR) material itself has a certain degree of flexibility, which gives the cable 5 a certain degree of flexibility, providing convenience for the installation and disassembly of this design in the already confined space of the bridge supports. Furthermore, benefiting from the unique properties of the cable 5's special material, coupled with its inherent hardness and strength, it can, to a certain extent, limit the displacement and deformation of the bridge in various directions, possessing multi-directional limiting capabilities. Combined with the damping and isolation effects it provides when working together with the bridge supports, the overall seismic performance of the bridge structure is comprehensively improved.

[0062] According to relevant research, traditional cables typically use steel strands made of high-strength steel, and their typical strain rate under dynamic loads is 10. -3 / s -1 ~10 -1 / s -1 The strain rate fluctuates within a certain range, while the typical strain rate of metal-based negative Poisson's ratio (NPR) materials is typically in the range of 10. 2 / s -1~10 3 / s -1 Inside is 10% of the steel strand material. 3 ~10 6 The strength and toughness of this material are significantly superior to traditional steel strand materials, indicating that it possesses excellent strength and toughness, allowing for continuous use over a longer period and ensuring performance sustainability. This helps bridges resist large deformations under earthquake influences and better enhances seismic performance. To further improve the overall strength and durability of cable 5, an additional rubber layer is wrapped around the outside of the negative Poisson's ratio (NPR) material, further enhancing the durability of cable 5.

[0063] In this scheme, after the anchoring components (upper anchoring component 1 and lower anchoring component 2) and the limiting components (upper limiting component 3 and lower limiting component 4) are installed and connected to the bridge structure by threads, the cable 5 can be fixed. After the cable 5 is placed in the correct position, well-mixed concrete is poured into the upper limiting component 33 and the lower limiting component 4 respectively, so that the cable 5 can be well fixed and bound to the upper limiting component 3 and the lower limiting component 4. After the concrete has solidified, the installation of the device in this scheme is completed.

[0064] It is important to note that when pouring concrete for the upper limit component 3, the central circular hole of the upper limit component 3 should be sealed first. A guide tube should be inserted to pour the concrete from top to bottom. After pouring, the guide tube should be removed, and the upper limit component 3 should be sealed again to prevent concrete from dripping out. Once the concrete loses its fluidity, the seal can be removed, and the normal curing process can begin. When pouring concrete for the lower limit component 4, to ensure convenient and quick replacement of the limit component and cable 5, the central circular hole at the bottom of the lower limit component 4 should be sealed (i.e., the connection between the lower limit body 41 and the axial extension 23 should be sealed, allowing the cable 5 to pass through, but preventing concrete from flowing into the axial extension 23 of the lower anchoring body 21, thus preventing obstruction of the disassembly of the lower limit component 4 and cable 5).

[0065] According to geometric transformation forms, such as Figure 8 As shown, the calculation methods for the horizontal and vertical forces and displacements of the NPR cable are as follows.

[0066] Fx=Fz*tanα (1)

[0067] ΔL=L / cosα-L (2)

[0068] F=F(ΔL) (3)

[0069] Fx=F*sinα (4)

[0070] Fz=F*cosα (5)

[0071] Where Fx is the horizontal force; Fz is the vertical force; α is the angle between the cable and the vertical direction under horizontal displacement; ΔL is the cable deformation; F is the force in the direction of the cable when the cable deformation is ΔL, and its value is related to the deformation and the mechanical model of the cable, and can be calculated incrementally.

[0072] Taking three NPR cables with a diameter of 15.2 mm, a yield strength of 420 kN, an elastic modulus of 210 GPa, a tensile strength of 1000 MPa, and a cable length of 600 mm as an example, under horizontal load, the load-horizontal displacement curve of the cables is as follows: Figure 9 As shown, the load-vertical displacement curve of the cable is as follows: Figure 10 As shown, bridges equipped with the device described in this patent have excellent energy dissipation and restraint capabilities under major earthquake conditions.

[0073] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A bridge-use multi-directional cable-stayed device with large deformation capacity, characterized in that, It includes: Upper anchoring components are pre-embedded in the bridge superstructure at the bridge bearings; The lower anchoring component is embedded in the substructure of the bridge at the bridge bearing and is opposite to the upper anchoring component. The upper limit component is fixedly connected to the upper anchoring component; The lower limit component is fixedly connected to the lower anchoring component and is opposite to the upper limit component; The cable has one end inserted upward into the upper limit component and fixedly connected to it, and the other end inserted downward into the lower limit component and fixedly connected to it.

2. The bridge-use multi-directional limiting cable device with large deformation as described in claim 1, characterized in that, The upper anchoring assembly includes an upper anchoring body, which is a cylindrical structure with one end open, and its closed end is embedded in the superstructure of the bridge at the bridge bearing. The lower anchoring assembly includes a lower anchoring body, which is a cylindrical structure with one end open, and its closed end is embedded in the substructure of the bridge at the bridge bearing. The virtual axes of the upper anchoring body and the lower anchoring body coincide; the upper limit component is fixedly connected inside the cylindrical structure of the upper anchoring body, and the lower limit component is fixedly connected inside the cylindrical structure of the lower anchoring body.

3. A bridge-use multi-directional limiting cable device with large deformation as described in claim 2, characterized in that, The outer side of the open end of the upper anchoring body is connected to a first square steel plate with a square outer contour. The middle part of the first square steel plate is provided with a first clearance hole corresponding to the outer periphery of the upper anchoring body. The outer side of the open end of the lower anchoring body is connected to a second square steel plate with a square outer contour. The middle part of the second square steel plate is provided with a second clearance hole corresponding to the outer periphery of the lower anchoring body.

4. A bridge-use multi-directional limiting cable device with large deformation as described in claim 3, characterized in that, The first square steel plate is partially embedded in the superstructure of the bridge at the bridge support, or the lower end face of the first square steel plate is flush with the surface of the superstructure of the bridge at the bridge support. The second square steel plate is partially embedded in the substructure of the bridge at the bridge support, or the lower end face of the second square steel plate is flush with the surface of the substructure of the bridge at the bridge support.

5. A bridge-use multi-directional limiting cable device with large deformation as described in claim 3 or 4, characterized in that, An anchoring steel bar is provided at the ends of both the upper anchoring body and the lower anchoring body away from their open ends; The cable is made of a negative Poisson's ratio material; the outer periphery of the cable is covered with a rubber layer.

6. A bridge-use multi-directional limiting cable device with large deformation as described in claim 5, characterized in that, The upper limit assembly includes an upper limit body with a cylindrical structure, the outer contour of which is adapted to the inner wall of the cylindrical structure of the upper anchor body, and the upper limit body is threadedly connected and fixed to the inner wall of the cylindrical structure of the upper anchor body. The lower limiting component includes a lower limiting body with a cylindrical structure, the outer contour of which is adapted to the inner wall of the cylindrical structure of the lower anchoring body, and the lower limiting body is threadedly connected and fixed to the inner wall of the cylindrical structure of the lower anchoring body. One end of the cable is inserted upward into the cylindrical structure of the upper limit body and fixedly connected to the upper limit body, while the other end is inserted downward into the cylindrical structure of the lower limit body and fixedly connected to the lower limit body.

7. A bridge-use multi-directional limiting cable device with large deformation as described in claim 6, characterized in that, The upper limit body has a first horizontal extension on the outer periphery of the end near the open end of the upper anchor body, and the first horizontal extension is in contact with the first square steel plate. The lower limiting body has a second horizontal extension on the outer periphery of the end near the open end of the lower anchoring body, and the second horizontal extension is attached to the second square steel plate.

8. A bridge-use multi-directional limiting cable device with large deformation as described in claim 6, characterized in that, The upper limit body is provided with a first polygonal protrusion at the end near the open end of the upper anchor body, which is used to cooperate with an external auxiliary tool so that the upper limit body and the upper anchor body can be threadedly connected. The lower limiting body has a second polygonal protrusion at the end near the open end of the lower anchoring body, which is used to cooperate with an external auxiliary tool to facilitate the threaded connection between the lower limiting body and the lower anchoring body.

9. A bridge-use multi-directional limiting cable device with large deformation as described in claim 6, characterized in that, The end of the upper limit body that connects to the upper anchor body is a closed structure, and a first variable diameter cavity with a larger inner diameter and a narrower outer diameter is formed inside it. The lower limiting body has a second variable-diameter cavity that is wider inside and narrower outside. The first and second diameter-changing cavities are both filled with concrete layers to fix the ends of the cable within them.

10. A bridge-use multi-directional limiting cable device with large deformation as described in claim 9, characterized in that, The lower anchoring body has an axially extended cylindrical structure at its end away from its open end. The inner diameter of the axially extended section is smaller than the inner diameter of the cylindrical structure of the lower anchoring body. Both ends of the lower limiting body are open ends. After the lower limiting body is threadedly connected to the lower anchoring body, the second variable diameter cavity communicates with the axially extended section, allowing the other end of the cable to be inserted downward into the axially extended section.

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