Wire rope damping shock absorption expansion joints and bridges

Abstract

The present invention discloses a wire rope damping shock-absorbing expansion joint and a bridge. It includes a wire rope damper and two symmetrically arranged anchoring structures, wherein the wire rope damper is fixed between the two anchoring structures, and side longitudinal beams are provided at the top edges of the two opposite sides of the two anchoring structures, and a waterproof structure is provided between the two side longitudinal beams, and the wire rope damper and the side longitudinal beams are arranged parallel to the side walls of the anchoring structures. The present invention adopts a wire rope damper as an energy dissipation component, so that the expansion joint has the energy dissipation and shock absorption function, and the structure is simple; the expansion and contraction function is achieved by utilizing the expansion and contraction of the scissors support system, so as to meet the displacement requirements of the engineering structure when the temperature changes, and the movement is more flexible, the structure is novel, and the installation and maintenance are extremely convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of civil engineering, and in particular relates to a steel wire rope damping and shock absorbing expansion joint and a bridge. Background Art

[0002] "Thermal expansion and contraction" is the most basic physical property of structures or structural components. For bridge structures, when the temperature rises, the beams will stretch; when the temperature drops, the beams will shorten. This characteristic has an important impact on the stress of the bridge structure, affecting the use and safety of the structure. Therefore, expansion joints are set every time the bridge structure reaches a certain length to adapt to the deformation caused by temperature changes.

[0003] At present, the expansion joints commonly used in bridges are modular expansion joints and comb plate expansion joints.

[0004] 1) Modular expansion joints

[0005] Each load-bearing sliding member (crossbeam, middle beam and supporting frame) of the modular telescopic device is supported on an elastic support, and each group of load-bearing member units adopts an elastic support system of a crossbeam and a displacement system jointly acted by series shear springs.

[0006] When a vehicle passes through the telescopic device, horizontal, vertical, torsional and other impact loads are generated. The vertical force and torque are transmitted through the center beam, side beam, cross beam and elastic support, the horizontal force is transmitted through the displacement spring, and the rubber material is used to buffer the load, so that the impact load is safely and reliably transmitted to the beam body and pier.

[0007] The displacement control system relies on the displacement springs that are symmetrically arranged in series under the middle beam to push the middle beam to move evenly to achieve uniform control of the seam width, so that the seam width of each unit remains consistent; the symmetrically arranged structure has a dual protection function.

[0008] Machined cavities are set on the center beam and side beams of the telescopic device. The rubber sealing belt is pre-pressed and embedded in the cavity by means of special fixtures. It is tightly combined with the cavity and can reliably isolate rainwater on the bridge deck to prevent the lower structure of the bridge from being eroded by rainwater.

[0009] 2) Expansion joint of comb plate

[0010] The comb plate telescopic device is mainly composed of short tooth plate, long tooth plate, waterproof sealing belt, rebound spring, multi-directional displacement seat and anchor bolts. The new comb plate telescopic device adopts a tension and compression ball bearing structure, which realizes the rotation of the beam body through the spherical surface. The elastic block at the bottom of the tension and compression bearing can release the pre-deformation and compensate for the gap caused by the wear of the spherical surface, so that the two spherical surfaces are always in a fit state.

[0011] Modular expansion joints and comb plate expansion joints are the two most widely used expansion joints in bridge expansion joint products. They are also the most easily damaged components in earthquakes and often need to be replaced after earthquakes. In recent years, these two types of expansion joints have made certain technical progress in shock and noise reduction through technological innovation, but due to the lack of a clear damping system, their energy dissipation and shock reduction effects are very limited, and they have not fundamentally overcome the damage caused by earthquakes to the structure or the expansion joints themselves. Summary of the invention

[0012] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology and to provide a wire rope damping shock-absorbing expansion joint and a bridge with simple structure and good shock-absorbing effect.

[0013] The technical solution adopted by the present invention is: a wire rope damping shock-absorbing expansion joint, including a wire rope damper and two symmetrically arranged anchoring structures, the wire rope damper is fixed between the two anchoring structures, the top edges of the two opposite sides of the two anchoring structures are provided with side longitudinal beams, a waterproof structure is arranged between the two side longitudinal beams, and the wire rope damper and the side longitudinal beams are arranged parallel to the side walls of the anchoring structure.

[0014] Furthermore, it also includes a top-level scissors-strut support system fixed between two anchor structures, wherein the top-level scissors-strut support system includes a middle longitudinal beam, a bottom beam, a slider and two rows of scissors-strut structures, wherein the two rows of scissors-strut structures are distributed at both ends of the middle longitudinal beam, and a plurality of wire rope dampers are arranged between the two rows of scissors-strut structures, wherein the top of the scissors-strut structure is connected to one end of the side longitudinal beam and the middle longitudinal beam, and the bottom of the scissors-strut structure is connected to one end of the bottom beam and the slider, and the slider can slide vertically.

[0015] Furthermore, the scissors strut structure includes multiple scissors struts, the top of the scissors strut on one side of the edge is connected to one end of the side longitudinal beam, and the bottom is connected to the slider, the top of the scissors strut on the other side of the edge is connected to one end of the middle longitudinal beam, and the bottom is connected to one end of the bottom beam; the top of the scissors strut located in the middle is connected to one end of the middle longitudinal beam, and the bottom is connected to one end of the bottom beam.

[0016] Furthermore, the scissors strut includes a first strut and a second strut, and the middle parts of the first strut and the second strut are connected by a pin to form an X-shaped structure.

[0017] Furthermore, the edges of the side longitudinal beams and the middle longitudinal beams are straight lines, or the edges of the side longitudinal beams and the middle longitudinal beams are concave-convex shapes that match each other.

[0018] Furthermore, one side of the wire rope damper is fixedly connected to the bottom of the middle longitudinal beam, and the other side of the wire rope damper is fixedly connected to the top of the bottom beam, and the middle longitudinal beam and the bottom beam are arranged vertically correspondingly.

[0019] Furthermore, it also includes one or more bottom-level scissors-strut support systems, wherein the bottom-level scissors-strut support systems are arranged below the top-level scissors-strut support systems. When multiple bottom-level scissors-strut support systems are included, the multiple bottom-level scissors-strut support systems are arranged up and down along the depth direction of the gap, and one or more wire rope dampers are arranged in the bottom-level scissors-strut support systems. The bottom-level scissors-strut support systems are connected to the top-level scissors-strut support systems through bottom beams and sliders, and adjacent bottom-level scissors-strut support systems are connected through pins and sliders.

[0020] Furthermore, one side of the wire rope damper is fixed on a first connection node between two corresponding scissors struts in two rows of scissors strut structures, and the other side of the wire rope damper is fixed on a second connection node between another two corresponding scissors struts in two rows of scissors strut structures, the first connection node and the second connection node are arranged adjacent to each other or across the nodes, and the first connection node and the second connection node are arranged horizontally, obliquely, or vertically.

[0021] Furthermore, two sides of the wire rope damper are respectively fixedly connected to the front baffles of the two anchoring structures.

[0022] Furthermore, the wire rope damper includes a first rope clamp, a second rope clamp and a wire rope, the first rope clamp, the second rope clamp and the wire rope are all linear structures, the first rope clamp, the second rope clamp and the wire rope are arranged parallel to the side wall of the anchoring structure, and the wire rope is fixed between the first rope clamp and the second rope clamp.

[0023] Furthermore, the steel wire rope is a linear structure formed by spirally winding steel wire rope strands.

[0024] Furthermore, the steel wire rope includes a plurality of separated steel wire rope loops, the plurality of steel wire rope loops are distributed in a straight line, one end of the plurality of steel wire rope loops are fixed to the first rope clamp, and the other end of the plurality of steel wire rope loops are fixed to the second rope clamp.

[0025] Furthermore, the anchoring structure includes a cover plate, a bottom plate, an inclined plate, a front baffle and a side plate, and the cover plate, the bottom plate, the inclined plate, the front baffle and the side plates are connected to form a closed steel anchor box structure, the side longitudinal beams are fixed at the connection between the cover plate and the front baffle, the cover plate is provided with sealing strips around, and the bottom plate and the inclined plate are provided with stiffening ribs.

[0026] A bridge comprises a left beam, a right beam and the above-mentioned steel wire rope damping shock absorbing expansion joint, wherein the steel wire rope damping shock absorbing expansion joint is installed in the gap between the left beam and the right beam, and two anchoring structures are fixedly connected to the left beam and the right beam respectively.

[0027] The present invention adopts a wire rope damper as an energy dissipation component, so that the expansion joint has the function of energy dissipation and shock absorption, and the structure is simple; the expansion and contraction of the scissors brace support system is used to achieve the expansion and contraction function, and the displacement requirements of the structure under temperature changes are met. The scissors brace support system of each expansion joint unit includes two rows of scissors brace structures. During the displacement and expansion process, each row of scissors brace structures does not need to be synchronized, and the multi-directional displacement function of the beam end can be realized, and the movement is more flexible. The wire rope damper of the present invention is combined with the scissors brace support system, which can dissipate energy and reduce shock in both the longitudinal and transverse directions of the bridge. It has a novel structure and is extremely convenient to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention.

[0029] Figure 2 It is a schematic diagram of the wire rope damper of the present invention.

[0030] Figure 3 It is a schematic diagram of the anchoring structure of the present invention.

[0031] Figure 4 It is a plan view of the anchoring structure of the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of Example 2 of the present invention.

[0033] Figure 6 for Figure 5 Middle Ⅰ-Ⅰ cross section.

[0034] Figure 7 for Figure 5 Middle II-II cross section.

[0035] Figure 8 for Figure 5 Schematic diagram of the scissors bracing system for the middle and top floors.

[0036] Fig. 9 for Figure 5 Schematic diagram of the connection of the wire rope damper.

[0037] Fig.10 It is a structural schematic diagram of the side longitudinal beam and the middle longitudinal beam of the present invention.

[0038] Fig.11 This is a schematic diagram of the structure of Example 3 of the present invention.

[0039] Fig.12 This is a schematic diagram of the structure of Example 4 of the present invention.

[0040] In the figure: 1-anchor structure; 2-wire rope damper; 3-top scissors brace support system; 4-waterstop; 5-gap; 6-side longitudinal beam; 7-middle longitudinal beam; 8-bottom beam; 9-slider; 10-scissors brace structure; 11-scissors brace; 12-first strut; 13-second strut; 14-pin; 15-bottom scissors brace support system; 16-first connection node; 17-second connection node; 18-first rope clamp; 19-second rope clamp; 20-wire rope; 22-cover plate; 23-bottom plate; 24-inclined plate; 25-front baffle; 26-side plate; 27-sliding member; 28-stiffening rib; 29-anchor bolt; 30-expansion slot; 31-left connector; 32-right connector; 33-connecting belt; 34-groove; 35-left beam body; 36-right beam body; 37-sealing strip. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Example 1

[0043] like Figure 1-4 As shown, the present invention provides a wire rope damping shock-absorbing expansion joint, comprising a wire rope damper 2 and two symmetrically arranged anchoring structures 1, wherein the wire rope damper 2 is fixed between the two anchoring structures 1, and side longitudinal beams 6 are provided on the top edges of the opposite sides of the two anchoring structures 1, and a waterproof structure is provided between the two side longitudinal beams 6, and the wire rope damper 2 and the side longitudinal beams 6 are arranged parallel to the side wall of the anchoring structure 1 (i.e., the front baffle 25).

[0044] The present invention adopts a wire rope damper as an energy dissipation component, so that the expansion joint has energy dissipation and shock absorption functions and has a simple structure; the support system of the single joint only has side beams and no middle beam, so there is no need for scissor braces, and the two side longitudinal beams are directly anchored to the steel anchor box. At this time, the first rope clamp and the second rope clamp on both sides of the wire rope damper are respectively fixedly connected to the front baffles of the two anchoring structures.

[0045] In the above scheme, the wire rope damper 2 includes a first rope clamp 18, a second rope clamp 19 and a wire rope 20. The first rope clamp 18, the second rope clamp 19 and the wire rope 20 are all linear structures. The first rope clamp 18, the second rope clamp 19 and the wire rope 20 are arranged parallel to the side wall of the anchoring structure 1 (i.e., the front baffle 25), and the wire rope 20 is fixed between the first rope clamp 18 and the second rope clamp 19. The first rope clamp 18 and the second rope clamp 19 have the same structure. The first rope clamp includes two linear steel plates. The two steel plates are connected by bolts. The two opposite surfaces of the two steel plates are respectively provided with a plurality of semicircular holes for accommodating the wire rope to pass through. The semicircular holes at corresponding positions on the two steel plates are buckled to form a rope clamp hole for fixing the wire rope. The wire rope 20 can be a linear structure formed by spirally winding steel wire rope strands, that is, in the form of a spring, such as Figure 2 The steel wire rope 20 may also include a plurality of separate steel wire rope loops, the plurality of steel wire rope loops are arranged in a straight line, the distance between the steel wire rope loops and the angle arrangement of the steel wire rope loops can be determined as required, one end of the plurality of steel wire rope loops are fixed to the first rope clamp, and the other end of the plurality of steel wire rope loops are fixed to the second rope clamp.

[0046] In the above scheme, the anchoring structure 1 plays the role of anchoring the steel wire rope damper and the scissors brace support system. The anchoring structure 1 includes a cover plate 22, a bottom plate 23, an inclined plate 24, a front baffle 25 and two side plates 26. The cover plate 22, the bottom plate 23, the inclined plate 24, the front baffle 25 and the two side plates 26 are connected to form a closed steel anchor box structure. The side longitudinal beam 6 is fixed at the connection between the cover plate 22 and the front baffle 25. The cover plate 22 is provided with a sealing strip 37 around it, and the bottom plate 23 and the inclined plate 24 are provided with stiffening ribs 28. In actual application, a vertical sliding member 27 (the sliding member itself is fixed) is pre-embedded on the side wall of the gap below the bottom plate. The sliding member 27 can be a flat steel plate or a slideway such as a channel steel, and the slider is arranged in a manner to fit the sliding member.

[0047] The steel anchor box is anchored to the steel plate on the beam body by anchor bolts 29. The beam body is shown as a concrete beam in the figure. The anchor steel plate and sliding member need to be pre-buried. This anchor structure can also be used for steel box beams. The inclined plate and bottom plate of the steel anchor box on one side are designed with a transverse expansion groove 30. Under the action of an earthquake, lateral relative movement may occur between adjacent anchor structures. The expansion groove can release the lateral displacement of the steel anchor box, thereby causing the two rope clamps of the wire rope damper to produce axial relative movement, which plays the role of energy dissipation and shock reduction of the wire rope damper.

[0048] In the above scheme, the waterproof structure includes one or more water stop strips 4 arranged between two side longitudinal beams 6, and the water stop strips 4 include an integrally connected left connector 31, a right connector 32 and a connecting strip 33, the two sides of the connecting strip 33 are respectively connected to the left connector 31 and the right connector 32, and the center of the connecting strip 33 is a bent V-shaped or arc-shaped groove 34. The attached figure of this embodiment only takes the V-shaped groove as an example, and the formed groove allows the collected rainwater to be discharged from both ends of the groove.

[0049] Example 2

[0050] like Figure 5-10 As shown, in order to adapt to different expansion joint gap sizes and improve the structural bearing capacity and shock absorption effect, on the basis of Example 1, the wire rope damping shock absorption expansion joint of the present invention can also include a top-level scissors brace support system 3 fixed between two anchoring structures, the top-level scissors brace support system 3 includes one or more middle longitudinal beams 7, bottom beams 8 and sliders 9 and two rows of scissors brace structures 10, the two rows of scissors brace structures 10 are symmetrically distributed at both ends of the middle longitudinal beam 7, at this time, the wire rope damper 2 is not directly connected to the anchoring structure, but is installed between the two rows of scissors brace structures 10, and multiple scissors brace structures 10 are set, the top of the scissors brace structure 10 is connected to the side longitudinal beam 6 and one end of the middle longitudinal beam 7, the bottom of the scissors brace structure 10 is connected to one end of the bottom beam 8 and the slider 9, and the slider 9 can slide vertically. In actual application, a sliding component is embedded in the side wall of the gap, and the slider fits the sliding component. When vibrating, the slider 9 can slide vertically up and down along the sliding component 27, thereby satisfying the telescopic function of the scissors brace support system.

[0051] Specifically, the scissors brace structure 10 includes a plurality of scissors braces 11. The top of one side of the scissors brace located at the edge is connected to one end of the side longitudinal beam 6, and the bottom is connected to the slider 9. The top of the other side of the scissors brace located at the edge is connected to one end of the middle longitudinal beam 7, and the bottom is connected to one end of the bottom beam 8. The top of the scissors brace located in the middle is connected to one end of the middle longitudinal beam 7, and the bottom is connected to one end of the bottom beam 8, that is, the middle scissors brace and the adjacent scissors brace share the middle longitudinal beam and the bottom beam. The scissors brace 11 includes a first brace rod 12 and a second brace rod 13. The middle of the first brace rod 12 and the middle of the second brace rod 13 are connected by a pin 14 to form an X-shaped structure.

[0052] When the wire rope damper 2 is arranged in the top-level scissors support system 3 of this embodiment, one side of the wire rope damper 2 (i.e., the first rope clamp 18) is fixedly connected to the bottom of the middle longitudinal beam 7 by bolts, and the other side of the wire rope damper 2 (i.e., the second rope clamp 19) is fixedly connected to the top of the bottom beam 8 by bolts. At this time, the middle longitudinal beam 7 and the bottom beam 8 are arranged vertically correspondingly.

[0053] The top-level scissors brace support system of this embodiment cooperates with multiple wire rope dampers, and the bottom beam plays the role of horizontally connecting the scissors brace, so that the integrity of the entire support system is better, and at the same time, it also supports the damper. The side longitudinal beams and the middle longitudinal beams directly bear the vehicle load. The side longitudinal beams are fixed to the anchor box, and the middle longitudinal beam is supported on the scissors brace. The middle longitudinal beam transfers the vehicle load to the scissors brace. The scissors brace is similar to the web of the truss structure, but the force is more complicated than the truss. It can rotate around the pin shaft. Here it not only bears axial force, but also bending moment and shear force. According to the force requirements, the scissors brace can be arranged in multiple stiles in the transverse direction of the bridge, that is, the connecting pin shafts of the two scissors braces at the corresponding horizontal positions are regarded as a whole. Under the action of temperature load, the scissors brace achieves the telescopic function through the rotation of the web rod. At this time, the height of the bottom beam will change, and the slider will slide on the sliding member to achieve the telescopic function. When the scissors brace support system moves, the nodes (also called pin shafts) of the scissors brace will produce relative movement, causing the wire rope loop to deform, thereby consuming vibration energy. The wire rope damper adopts ordinary strip wire rope damper, and can be made of stainless steel material to increase durability.

[0054] It should be noted that the edges of the side longitudinal beams 6 and the middle longitudinal beams 7 are not always as Figure 6 , Figure 7 The figure shows a straight line. In order to increase the wheelbase of the beam and the comfort of the vehicle, the edges of the side longitudinal beam and the middle longitudinal beam are made into convex and concave shapes that match each other (such as Fig.10 as shown) or other shapes.

[0055] Example 3

[0056] like Fig.11 As shown, when the beam body or the building structure is thicker, that is, the expansion joint is deeper, on the basis of Example 2, a bottom scissors-strut support system 15 can also be set, and the bottom scissors-strut support system 15 is arranged below the top scissors-strut support system 3 along the gap depth direction, and one or more wire rope dampers are arranged in the bottom scissors-strut support system 15, and the bottom scissors-strut support system includes a slider and two rows of scissors-strut structures (not specifically shown in the figure), and the slider and the two rows of scissors-strut structures are the same as the structure in the top scissors-strut support system, and the scissors-strut structure of the bottom scissors-strut support system is connected to the scissors-strut structure of the top scissors-strut support system through a common bottom beam and a slider, and the bottoms of adjacent scissors struts in each row of scissors-strut structures are connected through a pin shaft.

[0057] Example 4

[0058] like Fig.12 As shown in the figure, when the beam or building structure is thicker, that is, the expansion joint is deeper,

[0059] On the basis of Example 2, multiple bottom-level scissors-strut support systems 15 can also be set up, and the multiple bottom-level scissors-strut support systems 15 are arranged up and down along the depth direction of the gap. One or more wire rope dampers are set in the bottom-level scissors-strut support system. The bottom-level scissors-strut support system includes a slider and two rows of scissors-strut structures. The slider and the two rows of scissors-strut structures are the same as the structure in the top-level scissors-strut support system. The bottom-level scissors-strut support system and the top-level scissors-strut support system are connected through a common bottom beam and a slider, and adjacent bottom-level scissors-strut support systems (i.e., the corresponding upper and lower scissors struts) are connected through a pin and a slider, the bottoms of adjacent scissors struts in each row of scissors strut structures are connected through a pin, and the bottom side of the scissors strut located at the edge is connected to the slider.

[0060] The installation method of the wire rope damper and the pins on the scissors struts in the bottom-level scissors strut support system of Example 3 and Example 4 is as follows: in the area where the wire rope damper is not connected and the wire rope damper does not pass through, the upper and lower adjacent scissors struts (the two scissors struts in the upper and lower scissors strut structures arranged), the left and right adjacent scissors struts (that is, the two scissors struts in the same scissors strut structure), and the front and rear adjacent scissors struts (that is, the corresponding two scissors struts in the two rows of scissors strut structures in the same bottom-level scissors strut support system) are all connected by shorter pins; in the area where the wire rope damper is fixed and the wire rope damper passes through, the pins 14 of the two corresponding front and rear scissors struts in the two rows of scissors strut structures are connected as a whole to form a bottom beam structure similar to the top-level scissors strut support system as the first connection node 16, and the corresponding pins 14 of the other two scissors struts are connected as a whole as the second connection node 17, one side of the wire rope damper 2 (that is, the first rope clamp) is fixed on the first connection node 16, and the other side of the wire rope damper (that is, the second rope clamp) is fixed on the second connection node 17. When the wire rope damper is arranged across the node, that is, the front and rear adjacent scissor struts in the area where the wire rope damper passes are connected by shorter pin shafts, which facilitates the installation of the wire rope damper.

[0061] It is worth pointing out that, in theory, a wire rope damper can be arranged between any two nodes where the scissors brace generates relative motion, which can cause the wire rope loop to deform and dissipate energy through dry friction between the wires. For example, the wire rope damper 2 can be arranged horizontally (the horizontal arrangement is determined by the direction of the line connecting the ends of the first rope clamp and the second rope clamp). In this case, the first connection node 16 and the second connection node 17 are arranged horizontally at the same height, and the first connection node 16 and the second connection node 17 are arranged adjacent to each other. Fig.11As shown; the wire rope damper can also be arranged across nodes. This method is suitable for large expansion joints and occasions where a larger damping parameter is required. In this case, the first connection node and the second connection node are arranged across nodes. The wire rope damper 2 can also be arranged obliquely (the oblique arrangement is determined by the direction of the line connecting the ends of the first rope clamp and the second rope clamp). The first rope clamp and the second rope clamp are fixed at two nodes at different heights and not on a vertical line, that is, the first connection node 16 and the second connection node 17 are arranged obliquely, as shown in FIG. Fig.12 As shown, the first connection node 16 and the second connection node 17 can also be arranged vertically. In short, the arrangement of the wire rope damper is flexible and diverse, and the selection is made according to the conditions of structure, structural stress, processing and manufacturing, etc.

[0062] The present invention also provides a bridge, comprising a left beam 35, a right beam 36 and any one of the wire rope damping and shock-absorbing expansion joints described in the above embodiments 1-4, wherein the wire rope damping and shock-absorbing expansion joint is installed in the gap 5 between the left beam 35 and the right beam 36, and two anchoring structures 1 are fixedly connected to the left beam 35 and the right beam 36 respectively. At this time, each wire rope damping and shock-absorbing expansion joint serves as an expansion joint unit. According to the width of the bridge, a plurality of expansion joint units can be arranged along the transverse direction of the bridge, and adjacent expansion joint units are independent of each other.

[0063] The installation process of the expansion joint of the present invention on the bridge is as follows:

[0064] Prefabricate expansion joints in the factory: 1) First process the scissors brace, and install the middle beam, side beam and bottom beam on the scissors brace; 2) Install the finished wire rope damper between the nodes of the support system according to the requirements of the drawings; 3) Install the anchoring structure to form an independent expansion joint unit; 4) Transport the expansion joint unit to the site and anchor it to the embedded steel plate at the end of the beam with bolts; 5) Install the sealing strip and cover the cover.

[0065] It should be pointed out that if the expansion joint needs maintenance, it is only necessary to pry off the cover plate and unscrew the anchor bolts to remove the expansion joint unit and replace or maintain the corresponding components. There is no need to excavate concrete, so maintenance is extremely convenient.

[0066] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. A steel wire rope damping and shock absorbing expansion joint, characterized in that: The invention comprises a wire rope damper (2) and two symmetrically arranged anchoring structures (1), wherein the wire rope damper (2) is fixed between the two anchoring structures (1), and the two sides of the wire rope damper (2) are respectively fixedly connected to the front baffles of the two anchoring structures (1), and the top edges of the two opposite sides of the two anchoring structures (1) are provided with side longitudinal beams (6), and a waterproof structure is provided between the two side longitudinal beams (6); The invention also comprises a top-layer scissors-bracing support system (3) fixed between two anchoring structures, wherein the top-layer scissors-bracing support system (3) comprises a middle longitudinal beam (7), a bottom beam (8), a slider (9) and two rows of scissors-bracing structures (10), wherein the two rows of scissors-bracing structures (10) are distributed at both ends of the middle longitudinal beam (7), and one or more wire rope dampers (2) are arranged between the two rows of scissors-bracing structures (10), wherein the top of the scissors-bracing structure (10) is connected to one end of the side longitudinal beam (6) and the middle longitudinal beam (7), and the bottom of the scissors-bracing structure (10) is connected to one end of the bottom beam (8) and the slider (9), and the slider (9) is capable of vertical sliding.

2. The steel wire rope damping and shock absorbing expansion joint according to claim 1 is characterized in that: The scissors brace structure (10) comprises a plurality of scissors braces (11); the top of one side of the scissors brace (11) located at the edge is connected to one end of the side longitudinal beam (6), and the bottom is connected to the slider (9); the top of the other side of the scissors brace located at the edge is connected to one end of the middle longitudinal beam (7), and the bottom is connected to one end of the bottom beam (8); the top of the scissors brace located in the middle is connected to one end of the middle longitudinal beam (7), and the bottom is connected to one end of the bottom beam (8).

3. The steel wire rope damping and shock absorbing expansion joint according to claim 2 is characterized in that: The scissors strut (11) comprises a first strut (12) and a second strut (13); the first strut (12) and the second strut (13) are connected at their middle parts via a pin (14) to form an X-shaped structure.

4. The steel wire rope damping and shock absorbing expansion joint according to claim 1, characterized in that: The edges of the side longitudinal beams (6) and the middle longitudinal beams (7) are both straight lines, or the edges of the side longitudinal beams (6) and the middle longitudinal beams (7) are concave-convex shapes that match each other.

5. The steel wire rope damping and shock absorbing expansion joint according to claim 1, characterized in that: One side of the wire rope damper (2) is fixedly connected to the bottom of the middle longitudinal beam (7), and the other side of the wire rope damper (2) is fixedly connected to the top of the bottom beam (8), and the middle longitudinal beam (7) and the bottom beam (8) are arranged vertically correspondingly.

6. The steel wire rope damping and shock absorbing expansion joint according to claim 1, characterized in that: It also includes one or more bottom-level scissors-strut support systems (15), wherein the bottom-level scissors-strut support systems (15) are arranged below the top-level scissors-strut support system (3). When multiple bottom-level scissors-strut support systems are included, the multiple bottom-level scissors-strut support systems (15) are arranged up and down along the depth direction of the gap, and one or more wire rope dampers (2) are arranged in the bottom-level scissors-strut support systems (15). The bottom-level scissors-strut support systems are connected to the top-level scissors-strut support systems via bottom beams and sliders, and adjacent bottom-level scissors-strut support systems are connected via pins and sliders.

7. The steel wire rope damping and shock absorbing expansion joint according to claim 6, characterized in that: One side of the wire rope damper (2) is fixed to a first connection node (16) between two corresponding scissors struts in two rows of scissors strut structures, and the other side of the wire rope damper is fixed to a second connection node (17) between another two corresponding scissors struts in two rows of scissors strut structures, the first connection node (16) and the second connection node are arranged adjacent to each other or across the nodes, and the first connection node (16) and the second connection node (17) are arranged horizontally, obliquely, or vertically.

8. The steel wire rope damping and shock absorbing expansion joint according to claim 1, characterized in that: The wire rope damper (2) comprises a first rope clamp (18), a second rope clamp (19) and a wire rope (20); the first rope clamp (18), the second rope clamp (19) and the wire rope (20) are all linear structures; the first rope clamp (18), the second rope clamp (19) and the wire rope (20) are arranged parallel to the side wall of the anchoring structure (1); and the wire rope (20) is fixed between the first rope clamp (18) and the second rope clamp (19).

9. The steel wire rope damping and shock absorbing expansion joint according to claim 1, characterized in that: The anchoring structure (1) comprises a cover plate (22), a bottom plate (23), an inclined plate (24), a front baffle plate (25) and a side plate (26); the cover plate (22), the bottom plate (23), the inclined plate (24), the front baffle plate (25) and the side plate (26) are connected to form a closed steel anchor box structure; the side longitudinal beam (6) is fixed at the connection between the cover plate (22) and the front baffle plate (25); a sealing strip (37) is provided around the cover plate (22); and stiffening ribs (28) are provided on the bottom plate (23) and the inclined plate (24).

10. A bridge, characterized in that: It comprises a left beam body (35), a right beam body (36) and a wire rope damping shock absorbing expansion joint as described in any one of claims 1 to 9, wherein the wire rope damping shock absorbing expansion joint is installed in the gap between the left beam body (35) and the right beam body (36), and two anchoring structures (1) are fixedly connected to the left beam body (35) and the right beam body (36) respectively.

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