Wind-resistant device and wind-resistant system of cable-stayed bridge

Abstract

The application relates to a wind-resistant device and a wind-resistant system of a cable-stayed bridge, which are used for being installed on a main tower cross beam and a main beam, and the wind-resistant device comprises a steel block, the steel block is used for being fixed on the main beam, the steel block is provided with a sliding groove extending along the longitudinal bridge direction; a cross beam block is used for being fixed on the main tower cross beam, the cross beam block is arranged on one side of the steel block along the transverse bridge direction, and a buffer pad is arranged between the steel block and the cross beam block; a connecting shaft is fixed on the cross beam block and extends into the sliding groove, the connecting shaft can move relative to the steel block along the extension direction of the sliding groove; and a limiting system is installed in the steel block, when the steel block moves along the longitudinal bridge direction, the limiting system limits the longitudinal relative displacement of the connecting shaft and the steel block. The wind-resistant device can resist the wind in the longitudinal bridge direction and the transverse bridge direction, has good bridge anti-seismic effect, and solves the problems that the functions of various wind-resistant devices or components in the bridge structure are relatively single and the economy is poor.

Description

Technical Field

[0001] This application relates to the field of bridge technology, specifically to a wind-resistant device and system for cable-stayed bridges. Background Technology

[0002] With the rapid development of coastal cities in my country, the demand for cross-sea passages is also increasing. Among them, cross-sea steel truss bridges have become increasingly popular in recent years due to their advantages such as good landscape effect and large traffic capacity. However, due to the large wind load at sea, the wind resistance of bridges is often a key focus during the design process.

[0003] Semi-floating cable-stayed bridges are among the most common types of medium-to-large span truss bridges at sea. Due to their structural form, the longitudinal wind force on the main girder is transmitted to the cable anchor points of the main tower through the stay cables. Compared to structural systems with longitudinal restraint supports at the main tower, this results in a larger wind load lever arm at the tower base, leading to a relatively large bending moment at the tower base and particularly prominent longitudinal wind resistance issues. On the other hand, because the main girder is a steel truss girder, its structural height is relatively high compared to ordinary main girders, and the impact of lateral wind forces often requires close attention. Currently, common measures to address the longitudinal wind problem of cable-stayed bridge main girders include installing multiple elastic cables or dampers at the bottom of the main girder at the main tower to resist longitudinal wind effects; while for crosswinds, the usual practice is to install multiple lateral wind-resistant supports on the main tower. These methods do provide good wind resistance, but overall, the functions of each device or component are relatively singular, and their overall number is large, resulting in poor economic efficiency. Summary of the Invention

[0004] This application provides a wind-resistant device and wind-resistant system for cable-stayed bridges, which can solve the technical problems in related technologies where the functions of various wind-resistant devices or components in bridge structures are relatively simple, the overall number is large, and the economic efficiency is poor.

[0005] In a first aspect, embodiments of this application provide a wind-resistant device for a cable-stayed bridge, for installation on the main tower crossbeam and the main beam, comprising: a steel stop block for fixing to the main beam, the steel stop block having a groove extending along the longitudinal direction of the bridge; a crossbeam stop block for fixing to the main tower crossbeam, the crossbeam stop block being disposed on one side of the steel stop block along the transverse direction of the bridge, and a buffer pad being sandwiched between the steel stop block and the crossbeam stop block; a connecting shaft fixed to the crossbeam stop block, the connecting shaft extending into the groove, the connecting shaft being movable relative to the steel stop block in the groove along the extension direction of the groove; and a limiting system installed in the steel stop block, the limiting system restricting the longitudinal relative displacement between the connecting shaft and the steel stop block when the steel stop block moves along the longitudinal direction of the bridge.

[0006] In conjunction with the first aspect, in one embodiment, the wind-resistant device includes two steel blocks symmetrically arranged along the crossbeam block. Each of the two steel blocks has a sliding groove on both sides, allowing the end of the connecting shaft away from the crossbeam block to extend out of the steel block. The steel blocks have a limiting space. The limiting system includes multiple sliding members disposed within the limiting space and symmetrically distributed on opposite sides of the connecting shaft. Each sliding member includes a sliding plate and an elastic member located between the sliding plate and the connecting shaft. One end of the elastic member is fixed to the sliding plate, and the other end is connected to the connecting shaft.

[0007] In conjunction with the first aspect, in one embodiment, the limiting system further includes: a sliding cylinder, the sliding cylinder passing through the connecting shaft, and the elastic element connected to the sliding cylinder, and the elastic element connected to the connecting shaft through the sliding cylinder.

[0008] In conjunction with the first aspect, in one embodiment, the steel stop block includes two parallel vertical baffles and a base plate vertically fixed between the two vertical baffles. The two vertical baffles are used to fix the main beam, and the sliding groove is formed in the two vertical baffles.

[0009] In conjunction with the first aspect, in one embodiment, the steel block further includes two fixing plates, which are disposed between the two vertical baffles. The two fixing plates are arranged parallel to each other, and the two fixing plates and the two vertical baffles form the limiting space. The two ends of the sliding plate are slidably installed between the two fixing plates.

[0010] In conjunction with the first aspect, in one embodiment, the steel block is provided with a stiffening baffle inside, the stiffening baffle is arranged parallel to the bottom plate, and the plane on which the surface of the stiffening baffle is located intersects perpendicularly with the surface of the buffer pad block.

[0011] In conjunction with the first aspect, in one embodiment, the crossbeam stop block is provided with a fixed circular tube, the connecting shaft passes through the fixed circular tube, and the fixed circular tube is fixed to the connecting shaft.

[0012] In conjunction with the first aspect, in one embodiment, a plurality of shear studs are arranged on the outer periphery of the fixed circular tube, the shear studs are located inside the crossbeam stop block, and the shear studs extend radially along the fixed circular tube.

[0013] In conjunction with the first aspect, in one embodiment, the width of the groove in the vertical direction is greater than the diameter of the connecting shaft.

[0014] Secondly, this application provides a wind-resistant system for a cable-stayed bridge, comprising: a main tower crossbeam with crossbeam blocks installed thereon; a main beam with steel blocks fixed thereon, the steel blocks having grooves extending longitudinally along the bridge direction, the crossbeam blocks being disposed on one side of the steel blocks transversely along the bridge direction, and a buffer pad being sandwiched between the steel blocks and the crossbeam blocks; a connecting shaft fixed to the crossbeam blocks, the connecting shaft extending into the groove, the connecting shaft being movable relative to the steel blocks in the groove along the extension direction of the groove; and a limiting system installed in the steel blocks, the limiting system restricting the longitudinal relative displacement between the connecting shaft and the steel blocks when the steel blocks move longitudinally along the bridge direction.

[0015] The beneficial effects of the technical solutions provided in this application include:

[0016] By installing crossbeam blocks on the main tower crossbeam and steel blocks with grooves on one side of the crossbeam blocks on the main beam, with connecting shafts passing through the grooves and crossbeam blocks respectively, the connecting shafts can move relative to the steel blocks when there is longitudinal wind. This allows the steel blocks to follow the longitudinal displacement of the main beam under operating conditions, but the limiting system can restrict the longitudinal displacement of the main beam under extreme wind conditions or seismic action. Furthermore, through the cooperation of the steel blocks, crossbeam blocks, and buffer pads, the main beam can be provided with transverse bridge resistance. This solves the technical problem in related technologies where the functions of various wind-resistant devices or components in bridge structures are relatively simple, the overall number is large, and the economic efficiency is poor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of the wind-resistant system in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the overall structure of the wind-resistant device in the embodiments of this application;

[0020] Figure 3 for Figure 2 Sectional view of AA;

[0021] Figure 4 for Figure 2 Sectional view of BB;

[0022] Figure 5This is a schematic diagram of the connecting shaft in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the structure of the fixed circular tube in an embodiment of this application.

[0024] In the picture:

[0025] 1. Main beam;

[0026] 2. Main tower crossbeam;

[0027] 3. Steel stop block; 31. Slide groove; 32. Vertical baffle; 33. Base plate; 34. Fixing plate; 35. Reinforcing partition; 36. Vertical web plate;

[0028] 4. Crossbeam stop; 41. Fixed round pipe; 411. Shear stud;

[0029] 5. Buffer pads;

[0030] 6. Connecting shaft;

[0031] 72. Sliding plate; 73. Elastic element; 74. Sliding cylinder; 75. Baffle. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0033] This application provides a wind-resistant device for cable-stayed bridges, which can solve the technical problems in related technologies where the functions of various wind-resistant devices or components in bridge structures are relatively simple, the overall number is large, and the economy is poor.

[0034] See Figure 1The image shows a wind-resistant device for a cable-stayed bridge provided in this application embodiment, used for installation on the main tower crossbeam 2 and the main beam 1. It may include: a steel block 3, which is fixed to the main beam 1 and has a groove 31 extending longitudinally along the bridge direction; a crossbeam block 4, which is fixed to the main tower crossbeam 2 and is disposed on one side of the steel block 3 along the transverse direction, with a buffer pad 5 sandwiched between the steel block 3 and the crossbeam block 4. The buffer pad 5 allows the steel block 3 and the crossbeam block 4 to effectively resist lateral wind forces when subjected to transverse wind forces; and a connecting shaft 6, which is fixed to the crossbeam block 4 and extends into the... The connecting shaft 6 can move relative to the steel stop 3 along the extension direction of the sliding groove 31 within the sliding groove 31. When there is wind in the longitudinal direction of the bridge, the connecting shaft 6 can move within the sliding groove 31, that is, the connecting shaft 6 moves relative to the steel stop 3. A limiting system is installed in the steel stop 3. When the steel stop 3 moves along the longitudinal direction of the bridge, the limiting system restricts the longitudinal relative displacement between the connecting shaft 6 and the steel stop 3. That is, the limiting system can limit the relative displacement between the steel stop 3 and the connecting shaft 6. The relative displacement between the steel stop 3 and the connecting shaft 6 can also have a maximum limit. This limit can be determined by the limiting system or by the length of the sliding groove 31 along the longitudinal direction of the bridge.

[0035] This embodiment of the application sets a crossbeam stop 4 on the main tower crossbeam 2 and a steel stop 3 with a groove 31 on one side of the crossbeam stop 4 on the main beam 1. The connecting shaft 6 passes through the groove 31 and the crossbeam stop 4 respectively. The crossbeam stop 4 is fixed to the main tower crossbeam 2 and remains stationary when the wind blows. The connecting shaft 6 fixed in the crossbeam stop 4 is also stationary. This allows the connecting shaft 6 to move relative to the steel stop 3 when there is longitudinal wind, that is, the steel stop 3 moves relative to the connecting shaft 6. The groove 31 allows the steel stop 3 to follow the longitudinal displacement of the main beam 1 under operating conditions, but the limiting system can limit the longitudinal displacement of the main beam 1 under extreme wind conditions or seismic action. Through the cooperation of the steel stop 3, the crossbeam stop 4 and the buffer pad 5, the main beam can be provided with transverse resistance. At this time, the transverse force on the main beam 1 can be transferred to the main tower, thereby... The buffer pad 5 acts as a lateral wind-resistant support or lateral seismic stop, and can be made of rubber. One side of the buffer pad 5 can be glued and fixed to the side of the steel stop 3 near the crossbeam stop 4, while the other side can be in contact with the crossbeam stop 4 or have a small gap, so that the buffer pad 5 can minimize the impact when the steel stop 3 moves. Under extreme wind conditions or seismic forces, when the displacement of the main beam along the longitudinal direction of the bridge is too large, the cable-stayed bridge structure system changes from a semi-floating system to a longitudinally constrained system. The longitudinal wind force or seismic force on the main beam will be transferred to the crossbeam of the main tower through the wind-resistant device described in this embodiment, which plays a role in wind and seismic resistance. Compared with the semi-floating cable-stayed bridge system, which transfers the horizontal force of the main beam to the anchor cable position on the higher main tower through the stay cables, the former force transmission method has a shorter lever arm, thereby generating a smaller bending moment on the bottom section of the main tower and achieving better wind and seismic resistance. This solves the technical problems in related technologies where the functions of various wind-resistant devices or components in bridge structures are relatively simple, the overall number is large, and the economy is poor.

[0036] See Figure 2As shown, in some optional embodiments, the wind-resistant device includes two steel blocks 3, which are symmetrically arranged along the crossbeam block 4. The presence of two opposing steel blocks 3 on both sides of the crossbeam block 4 allows for greater stability when the steel blocks 3 shift relative to the crossbeam block 4. Each of the two steel blocks 3 has a sliding groove 31 on both sides, allowing the end of the connecting shaft 6 away from the crossbeam block 4 to extend out of the steel block 3. The steel blocks 3 have a limiting space, and the limiting system includes multiple sliding members disposed within the limiting space, symmetrically distributed on the connecting shaft 6. On opposite sides, the sliding element includes a sliding plate 72 and an elastic element 73 located between the sliding plate 72 and the connecting shaft 6. One end of the elastic element 73 is fixed to the sliding plate 72, and the other end is connected to the connecting shaft 6. That is, when the connecting shaft 6 extends into the cavity of the steel stop 3, part of the connecting shaft 6 is located within the limiting space. Through the combined action of the elastic element 73 and the sliding plate 72 symmetrically arranged on both sides of the connecting shaft 6, the displacement of the steel stop 3 relative to the connecting shaft 6 when the bridge is subjected to longitudinal wind can be buffered, reducing the problem that the connecting shaft 6 may directly contact the end of the slide groove 31 under extreme wind, which may cause large vibrations. Preferably, the elastic element 73 can be a spring. When the connecting shaft 6 moves along the longitudinal direction of the bridge in the slide groove 31 and contacts the steel stop 3, the spring on one side is just compressed to its maximum. In some other embodiments, when the connecting shaft 6 moves along the longitudinal direction of the bridge in the slide groove 31 and contacts the steel stop 3, the spring on one side may not be in the minimum compression state.

[0037] See Figure 3 and Figure 4 As shown, in some optional embodiments, the limiting system further includes a sliding cylinder 74, which passes through the connecting shaft 6, and the elastic element 73 is connected to the sliding cylinder 74. The elastic element 73 is also connected to the connecting shaft 6 via the sliding cylinder 74. That is, the elastic element 73 and the sliding plate 72 are indirectly connected to the connecting shaft 6 via the sliding cylinder 74. This arrangement facilitates installation during construction. In other embodiments, the elastic element 73 can occupy a large area within the limiting space. The connecting shaft 6 can be directly connected to the elastic element 73, or it can be in a static, spaced-out state. When longitudinal winds act on the bridge, movement causes the connecting shaft 6 and the elastic element 73 to come into direct contact. It should be understood that the elastic element 73 in this embodiment can be a spring or other elastic object. Preferably, a baffle 75 may be provided within the limiting space. Two baffles 75 are provided, each baffle 75 being located between the steel block 3 and the sliding plate 72. Preferably, the plane of the baffle 75 is perpendicular to the plane of the sliding plate 72. When the sliding plate 72 slides to abut against the baffle 75, it is limited and cannot move further.

[0038] In some optional embodiments, the steel block 3 includes two parallel vertical baffles 32 and a bottom plate 33 vertically fixed between the two vertical baffles 32. The two vertical baffles 32 are used to fix the main beam 1. The groove 31 is formed between the two vertical baffles 32. In this case, the steel block can be a box-shaped steel structure. Parts of the two vertical baffles 32 extend into the bottom of the main beam 1 and are fixed. Then, the side of the two vertical baffles 32 closest to the main beam 1 does not need to be provided with a top plate to save some resources. Preferably, two vertical web plates 36 are also provided between the two vertical baffles 32. The two vertical web plates 36, the two vertical baffles 32, and the bottom plate 33 together form a complete box-shaped steel structure.

[0039] In some optional embodiments, the steel block 3 further includes two fixing plates 34, which are disposed between the two vertical baffles 32. The two fixing plates 34 are arranged parallel to each other and together with the two vertical baffles 32 form the limiting space. The two ends of the sliding plate 72 are respectively installed between the two fixing plates 34, that is, the sliding plate 72 slides between the two fixing plates 34. The top and bottom ends of the sliding plate 72 are in contact with the fixing plates 34 respectively. The fixing plates 34 are located in the cavity of the steel block 3, which allows the length of the sliding plate 72 in the vertical direction to be shorter, making it smoother during sliding and less prone to tilting.

[0040] In some optional embodiments, the steel block 3 is provided with a stiffening baffle 35 inside. The stiffening baffle 35 is arranged parallel to the bottom plate 33, and the plane on which the surface of the stiffening baffle 35 is located intersects perpendicularly with the surface of the buffer pad 5. In addition to increasing the stability of the steel block 3, the stiffening baffle 35 can also transfer part of the force to the buffer pad 5 when the bridge is subjected to transverse winds, which can further reduce the overall vibration of the bridge. Preferably, a fixed plate 34 near the main beam 1 can also have the function of the stiffening baffle 35, that is, the plane on which the fixed plate 34 is located also intersects perpendicularly with the surface of the buffer pad 5.

[0041] See Figure 5 As shown, in some optional embodiments, the crossbeam stop 4 is provided with a fixed circular tube 41, and the connecting shaft 6 passes through the fixed circular tube 41 and is fixed to the connecting shaft 6. By providing the fixed circular tube 41, the connecting shaft 6 can easily pass through, which is beneficial for construction and reduces construction steps. In this embodiment, the inner wall of the fixed circular tube 41 is provided with an internal thread, and the part where the connecting shaft 6 is fixed to the fixed circular tube 41 is provided with a thread corresponding to the internal thread. The connecting shaft 6 and the fixed circular tube 41 are then fixed by threaded connection.

[0042] See Figure 6As shown, in some optional embodiments, multiple shear studs 411 are arranged on the outer periphery of the fixed circular tube 41. The shear studs 411 are located inside the crossbeam block 4 and extend radially along the fixed circular tube 41. When the main tower crossbeam 2 is a concrete structure, the crossbeam block 4 is also a concrete structure. Setting shear studs 411 extending into the crossbeam block 4 can strengthen the stability of the crossbeam block 4 and make the fixed circular tube 41 more stable in the crossbeam block 4. In some other embodiments, when the main tower crossbeam 2 is a steel structure, the crossbeam block 4 can also be a steel structure. In this case, setting the fixed circular tube 41 in the crossbeam block 4 eliminates the need for shear studs 411.

[0043] In some alternative embodiments, the width of the groove 31 in the vertical direction is greater than the diameter of the connecting shaft 6. This arrangement allows the main beam 1 to have a negative reaction force in the event of an earthquake, and the connecting shaft 6 can then interact vertically with the steel stop 3, thus resisting some of the upward pull-out force.

[0044] This application embodiment also provides a wind-resistant system for a cable-stayed bridge, which may include: a main tower crossbeam 2, on which a crossbeam stop 4 is installed; a main beam 1, on which a steel stop 3 is fixed, the steel stop 3 having a groove 31 extending along the longitudinal direction of the bridge, the crossbeam stop 4 being disposed on one side of the steel stop 3 along the transverse direction of the bridge, and a buffer pad 5 sandwiched between the steel stop 3 and the crossbeam stop 4; a connecting shaft 6, the connecting shaft 6 being fixed to the crossbeam stop 4, and the connecting shaft 6 extending into the groove 31, the connecting shaft 6 being able to move relative to the steel stop 3 in the groove 31 along the extension direction of the groove 31; and a limiting system, the limiting system being installed in the steel stop 3, the limiting system restricting the longitudinal relative displacement between the connecting shaft 6 and the steel stop 3 when the steel stop 3 moves along the longitudinal direction of the bridge. The wind-resistant system may adopt the wind-resistant structure of any of the above embodiments, and will not be described in detail here.

[0045] The cable-stayed bridge in this embodiment can be a steel truss cable-stayed bridge. The manufacturing and installation method of the wind-resistant system of a cable-stayed bridge provided in this application embodiment may include the following steps:

[0046] S1: Based on the finite element static calculation model of the cable-stayed bridge, the transverse reaction force and longitudinal displacement value Δ of the steel truss beam at the main tower under the standard combination action including the operating wind load are obtained. Then, through force calculation, the number of wind-resistant devices on the main tower crossbeam 2 is first determined, and then the dimensions of related components such as steel block 3, connecting shaft 6, and crossbeam block 4 are determined.

[0047] S2: During the manufacturing of the steel truss girder, the steel stop block 3 structure at the bottom of the main beam 1 is installed simultaneously. The specific installation steps are as follows: First, weld the two vertical baffles 32 and the two vertical web plates 36 to the bottom of the corresponding inverted main beam 1 according to their positioning. Then, weld the stiffening diaphragm 35 and one of the fixing plates 34 in sequence. Simultaneously, weld the sliding plate 72, spring, and sliding cylinder 74 in the open space to form a limiting system. Then, place the limiting system on the welded fixing plate 34, and finally weld the other fixing plate 34 and the bottom plate 33. When manufacturing the vertical baffle 32, a groove 31 is opened at the corresponding position based on the above-mentioned longitudinal displacement Δ value. The length of the groove 31 along the longitudinal direction of the bridge is determined according to the sum of the above-mentioned Δ value and the diameter of the connecting shaft 6, and its height is determined to be slightly larger than the diameter of the connecting shaft 6. During installation, the two steel stop block 3 structures can be welded and assembled separately without affecting each other.

[0048] S3: The threaded parts of the fixed round tube 41 and the connecting shaft 6 are manufactured and their threads correspond to each other. The shear nail 411 is welded to the outer circumference of the fixed round tube 41. The fixed round tube 41 is fixed to the steel skeleton of the crossbeam block 4 by positioning it at the construction site. It is then embedded into the interior of the crossbeam block 4 when the concrete is poured.

[0049] S4: Finally, align the positions of the two steel blocks 3 with the crossbeam blocks 4 at the construction site, leaving a design gap between the steel blocks 3 and the crossbeam blocks 4 along the transverse direction of the bridge. Then, install the connecting shaft 6, passing it through the groove 31 in one side of the steel block 3. When it passes through the fixed round pipe 41, it needs to be mechanically fixed to the design position using the threads on the component until the connecting shaft 6 passes through the groove 31 in the steel block 3 on the other side. Afterward, place the buffer pad 5 in the design position and fix it to the vertical baffle 32 on the side of the steel block 3 closest to the crossbeam blocks 4.

[0050] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A wind-resistant device for a cable-stayed bridge, used for installation on the main tower crossbeam (2) and the main beam (1), characterized in that, It includes: Steel block (3), the steel block (3) is used to fix the main beam (1), and the steel block (3) is provided with a groove (31) extending along the longitudinal direction of the bridge. A crossbeam stop (4) is used to fix the main tower crossbeam (2). The crossbeam stop (4) is arranged on one side of the steel stop (3) along the transverse direction of the bridge, and a buffer pad (5) is sandwiched between the steel stop (3) and the crossbeam stop (4). A connecting shaft (6) is fixed to the crossbeam stop (4) and extends into the slide groove (31). The connecting shaft (6) can move relative to the steel stop (3) in the slide groove (31) along the extension direction of the slide groove (31). A limiting system is installed in the steel stop (3). When the steel stop (3) moves along the longitudinal direction of the bridge, the limiting system restricts the longitudinal relative displacement between the connecting shaft (6) and the steel stop (3). The wind-resistant device includes two steel blocks (3), which are symmetrically arranged along the crossbeam block (4). Each of the two steel blocks (3) has a sliding groove (31) on both sides, allowing the end of the connecting shaft (6) away from the crossbeam block (4) to extend out of the steel block (3). The steel blocks (3) have a limiting space, and the limiting system includes: Multiple sliding members are provided within the limiting space and are symmetrically distributed on opposite sides of the connecting shaft (6). Each sliding member includes a sliding plate (72) and an elastic member (73) located between the sliding plate (72) and the connecting shaft (6). One end of the elastic member (73) is fixed to the sliding plate (72), and the other end is connected to the connecting shaft (6).

2. The wind-resistant device for a cable-stayed bridge as described in claim 1, characterized in that, The limiting system also includes: A sliding cylinder (74) is inserted through the connecting shaft (6), and an elastic element (73) is connected to the sliding cylinder (74), and the elastic element (73) is connected to the connecting shaft (6) through the sliding cylinder (74).

3. The wind-resistant device for a cable-stayed bridge as described in claim 1, characterized in that: The steel block (3) includes two parallel vertical baffles (32) and a bottom plate (33) vertically fixed between the two vertical baffles (32). The two vertical baffles (32) are used to fix the main beam (1), and the groove (31) is opened on the two vertical baffles (32).

4. The wind-resistant device for a cable-stayed bridge as described in claim 3, characterized in that: The steel block (3) also includes two fixing plates (34), which are located between the two vertical baffles (32). The two fixing plates (34) are arranged parallel to each other, and the two fixing plates (34) and the two vertical baffles (32) form the limiting space. The two ends of the sliding plate (72) are slidably installed between the two fixing plates (34).

5. The wind-resistant device for a cable-stayed bridge as described in claim 4, characterized in that: The steel block (3) is provided with a stiffening baffle (35) inside. The stiffening baffle (35) is set parallel to the bottom plate (33), and the plane on which the stiffening baffle (35) is located intersects perpendicularly with the plane on which the buffer pad (5) is located.

6. The wind-resistant device for a cable-stayed bridge as described in claim 1, characterized in that: The crossbeam stop block (4) is provided with a fixed round tube (41), the connecting shaft (6) passes through the fixed round tube (41), and the fixed round tube (41) is fixed to the connecting shaft (6).

7. The wind-resistant device for a cable-stayed bridge as described in claim 6, characterized in that: Multiple shear studs (411) are arranged on the outer periphery of the fixed circular tube (41). The shear studs (411) are located inside the crossbeam stop (4) and extend radially along the fixed circular tube (41).

8. The wind-resistant device for a cable-stayed bridge as described in claim 1, characterized in that: The width of the groove (31) in the vertical direction is greater than the diameter of the connecting shaft (6).

9. A wind-resistant system for a cable-stayed bridge, characterized in that, It includes: Main tower crossbeam (2), the main tower crossbeam (2) is equipped with crossbeam blocks (4); The main beam (1) is fixed with a steel block (3), the steel block (3) has a groove (31) extending along the longitudinal direction of the bridge, the crossbeam block (4) is set on one side of the steel block (3) along the transverse direction of the bridge, and a buffer pad (5) is sandwiched between the steel block (3) and the crossbeam block (4). A connecting shaft (6) is fixed to the crossbeam stop (4) and extends into the slide groove (31). The connecting shaft (6) can move relative to the steel stop (3) in the slide groove (31) along the extension direction of the slide groove (31). A limiting system is installed in the steel stop (3). When the steel stop (3) moves along the longitudinal direction of the bridge, the limiting system restricts the longitudinal relative displacement between the connecting shaft (6) and the steel stop (3). The wind-resistant system includes two steel blocks (3), which are symmetrically arranged along the crossbeam block (4). Each of the two steel blocks (3) has a sliding groove (31) on both sides, allowing the end of the connecting shaft (6) away from the crossbeam block (4) to extend out of the steel block (3). The steel blocks (3) have a limiting space, and the limiting system includes: Multiple sliding members are provided within the limiting space and are symmetrically distributed on opposite sides of the connecting shaft (6). Each sliding member includes a sliding plate (72) and an elastic member (73) located between the sliding plate (72) and the connecting shaft (6). One end of the elastic member (73) is fixed to the sliding plate (72), and the other end is connected to the connecting shaft (6).

Images