Wind-resistant devices and construction methods for the main girder of cable-stayed-suspension bridge during construction

Abstract

This invention relates to the field of bridge engineering technology, specifically to a wind-resistant device and construction method for the main girder of a cable-stayed-suspension bridge during construction. It includes: a first connecting part, a second connecting part, a crossbeam, and anchor cables. The first connecting part is fixedly connected to the main girder in the suspension zone, with at least two sets of the first connecting parts connected to both ends of the main girder in the suspension zone, distributed on both sides of the main girder in the suspension zone. The second connecting part is fixedly connected to the main girder in the cable-stayed zone, with at least two sets of the second connecting parts connected to one end of the main girder in the cable-stayed zone near the main girder in the suspension zone, distributed on both sides of the main girder in the cable-stayed zone. The crossbeam is connected to two main cables in the overlapping zone. One end of the anchor cable is connected to the first connecting part, passes through the crossbeam in the middle, and the other end is connected to the second connecting part. This invention can improve the wind resistance performance of the main girder in the suspension zone, and is highly targeted, has good wind control effect, and is convenient to install and apply.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, specifically to a wind-resistant device and construction method for the main beam of a cable-stayed-suspension bridge during construction. Background Technology

[0002] The cable-stayed-suspension bridge, as a novel bridge system, is a long-span cable-stayed load-bearing bridge with enormous development potential. Compared to traditional cable-stayed bridges, the cable-stayed-suspension bridge has a larger span and a more scientifically designed stress distribution; compared to traditional suspension bridges, it offers better wind resistance and higher structural stiffness. The structure of a cable-stayed-suspension bridge generally includes: bridge towers, stiffening girders, stay cables, main cables, suspenders, anchorages, and foundations. Based on the distribution of the stay cables and suspenders, the stiffening girder segment within the main span can be divided into: the cable-stayed zone, the suspension zone, and the overlapping zone.

[0003] In the construction of cable-stayed-suspension bridges, the closure of the bridge structure generally includes two schemes: mid-span closure and overlapping zone closure. Mid-span closure refers to starting construction from the cable-stayed sections on both sides and closing in the central suspension section. Overlapping zone closure refers to simultaneous construction of the cable-stayed sections on both sides and the central suspension section, with closure finally occurring in the overlapping zone. It is clear that overlapping zone closure is more efficient than mid-span closure. However, during construction of overlapping zone closure, the main girder and main cable in the suspension section are generally temporarily connected by hinges, resulting in lower stiffness and weaker wind resistance. Currently, to improve the wind resistance of the main girder in the suspension section, conventional suspension bridge wind-resistant measures are often adopted, such as cross cables, central fasteners, vertical anchor cables, temporary connections, and wind-resistant cables. However, these methods are not specifically tailored to the characteristics of cable-stayed-suspension bridges, have poor control effects, and require large amounts of materials. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a wind-resistant device and construction method for the main girder of a cable-stayed-suspension bridge during construction. Compared with the measures of traditional suspension bridges to improve the wind resistance of the main girder in the suspension zone, this invention has the advantages of being highly targeted, having a good wind control effect, and being easy to install and apply.

[0005] The technical solution of this invention is: a wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge, comprising:

[0006] The first connecting part is fixedly connected to the main beam of the suspension area. At least two sets of the first connecting parts are connected to both ends of the main beam of the suspension area. The first connecting parts are distributed on both sides of the main beam of the suspension area.

[0007] The second connecting part is fixedly connected to the main beam of the cable-stayed zone. At least two sets of the second connecting parts are connected to one end of the main beam of the cable-stayed zone near the main beam of the suspension zone. The second connecting parts are distributed on both sides of the main beam of the cable-stayed zone.

[0008] A crossbeam, which connects the two main cables in the overlapping area;

[0009] An anchor cable, one end of which is connected to the first connecting part, passes through the crossbeam in the middle, and the other end is connected to the second connecting part.

[0010] According to the wind-resistant device for the main beam during the construction period of a cable-stayed-suspension bridge provided in this application, the first connection part includes an anchor ring and a base plate. The anchor ring is fixedly connected to the base plate for fixing the anchor cable. The base plate is fixedly connected to the main beam in the suspension zone.

[0011] According to the wind resistance device for the main beam during the construction period of a cable-stayed-suspension bridge provided in this application, the second connection part includes a shell, a traction device and a steering groove. The shell is a cavity structure with one end open. The traction device is connected to the anchor cable and installed in the shell to provide cable force to the anchor cable. The steering groove is connected to the opening of the shell and is used to guide the anchor cable to turn.

[0012] According to the wind resistance device for the main girder during the construction period of a cable-stayed-suspension bridge provided in this application, the traction device includes a slider, a lead screw, and an anchor plate. The slider is connected to the anchor cable and can slide horizontally inside the shell. One end of the lead screw is connected to the slider, and the other end extends away from the opening of the shell and penetrates the shell. The anchor plate is connected to the end of the lead screw that penetrates the shell and is used to fix the lead screw and the slider.

[0013] According to the wind-resistant device for the main beam of a cable-stayed-suspension bridge during construction provided in this application, cable clamps are connected to the crossbeam for connecting the main cable; turning holes are opened through both ends of the crossbeam for the anchor cable to pass through.

[0014] According to the wind-resistant device for the main beam of a cable-stayed-suspension bridge during construction provided in this application, the turning hole is a circular hole with arc-shaped chamfers at both ends to prevent the anchor cable from being damaged due to long-term friction.

[0015] According to the wind-resistant device for the main beam during the construction period of a cable-stayed-suspension bridge provided in this application, one end of the anchor cable is connected to the first connecting part, and the other end is connected to the second connecting part on the same side. The middle of the anchor cable passes through one end of the crossbeam on the opposite side.

[0016] According to the wind-resistant device for the main beam during the construction period of the cable-stayed-suspension bridge provided in this application, one end of the anchor cable is connected to the anchor ring of the first connecting part, and the other end is connected to the slider of the second connecting part on the same side. The middle of the anchor cable passes through the turning hole at the opposite end of the crossbeam, so that the anchor cable is in a zigzag shape on the plane. Multiple anchor cables are connected and cross each other in the above manner.

[0017] Based on the same inventive concept, this application also provides a construction method for a wind-resistant device for the main girder during the construction period of any of the above-described cable-stayed-suspension cooperative bridge systems, comprising:

[0018] Preliminary preparations: Assemble multiple sets of the first connecting parts, multiple sets of the second connecting parts, and the crossbeam;

[0019] Install the first connecting part: fix multiple sets of the first connecting parts to both ends of the main beam in the suspension area, and distribute them symmetrically on both sides of the main beam in the suspension area;

[0020] Install the crossbeam: Open the cable clamp and put the cable clamp on the main cable;

[0021] Install the second connecting part: Fix multiple sets of the second connecting parts to one end of the main beam in the cable-stayed zone near the suspension zone, and distribute them symmetrically on both sides of the main beam in the cable-stayed zone;

[0022] Install anchor cable: Connect one end of the anchor cable to the anchor ring of the first connecting part, pass through the turning hole of the crossbeam in the middle, and connect the other end to the slider of the second connecting part;

[0023] Adjusting the anchor cable tension: Activate the traction device to tension the anchor cable to achieve the predetermined tension;

[0024] According to the construction method of the wind-resistant device of the main beam of the cable-stayed-suspension bridge during the construction period provided in this application, one end of the anchor cable is connected to the anchor ring of the first connecting part, and the other end is connected to the slider of the second connecting part on the same side. The middle of the anchor cable passes through the turning hole at the opposite end of the crossbeam, so that the anchor cable is in the shape of a broken line in the plane. Multiple anchor cables are connected and cross each other in the above manner.

[0025] According to the construction method of the main beam wind-resistant device for cable-stayed-suspension bridge construction period provided in this application, the method of tensioning the anchor cable by the traction device is as follows: slide the slider away from the opening of the shell, and after the anchor cable reaches the predetermined cable force, connect and fix the anchor plate to one end of the screw rod that passes through the shell to maintain the cable force of the anchor cable.

[0026] The advantages of this application are:

[0027] 1. The wind-resistant device of this application is not only structurally reasonable and easy to install and apply, but also solves the problems of weak wind resistance of the main girder during the construction period in the suspended zone and easy loosening of anchor cables due to large deformation of the main cable during the construction period. After simple modification, this device can also be applied to the construction of the main girder of the suspension bridge;

[0028] 2. The first connection part of this application is connected to the anchor cable through the anchor ring and fixedly connected to the main beam of the suspension area through the base plate. The structure is simple and reliable, and easy to install and disassemble.

[0029] 3. The second connecting part of this application serves both to connect the anchor cable and to provide cable force to the anchor cable, resulting in a simplified and efficient structure;

[0030] 4. The traction device of this application achieves the effect of tensioning anchor cables through a simple mechanical structure, which facilitates construction operations by technicians;

[0031] 5. The crossbeam of this application can change the connection path of the anchor cable, further increasing the tension of the anchor cable to maintain greater cable force;

[0032] 6. The two ends of the turning hole on the crossbeam of this application are provided with arc-shaped chamfers, which can protect the anchor cable from damage due to long-term contact and friction with the crossbeam;

[0033] 7. The anchor cable connection path of this application is in the shape of a broken line in the plane, which can further improve the wind resistance of the main beam in the suspended area and provide a stable and reliable construction environment for the closure operation in the overlapping area; Attached Figure Description

[0034] Figure 1 This is a schematic elevation view of the wind-resistant device for the main girder during the construction period of the cable-stayed-suspension bridge in this application;

[0035] Figure 2 This is a schematic diagram of the plan structure of the wind-resistant device for the main girder during the construction period of the cable-stayed-suspension cooperative system bridge in this application;

[0036] Figure 3 This is a structural schematic diagram of the beam in this application;

[0037] Figure 4 This is a schematic diagram of the structure of the first connecting part of this application;

[0038] Figure 5 This is a schematic diagram of the structure of the second connecting part of this application;

[0039] Wherein: 1-first connecting part; 11-anchor ring; 12-base plate; 2-second connecting part; 20-shell; 21-traction device; 211-slider; 212-lead screw; 213-anchor plate; 22-turning groove; 3-crossbeam; 31-cable clamp; 32-turning hole; 4-anchor cable. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. Moreover, 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 explicitly 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.

[0043] This invention relates to a wind-resistant device and construction method for the main girder of a cable-stayed-suspension bridge during construction. Compared with traditional measures to improve the wind resistance of the main girder in the suspension zone of a suspension bridge, this invention, based on the characteristics of a cable-stayed-suspension bridge, installs a wind-resistant device in the overlapping zone. It utilizes the stable structure of the cable-stayed zone to improve the wind resistance of the main girder in the suspension zone, which not only has a good wind control effect but is also easy to install and apply.

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0045] A wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge, specifically, such as... Figure 1 , 2As shown, the structure includes a first connecting part 1, a second connecting part 2, a crossbeam 3, and an anchor cable 4. The first connecting part 1 is fixedly connected to the main beam in the suspension zone, and at least two sets of first connecting parts 1 are connected to both ends of the main beam in the suspension zone. The first connecting parts 1 are distributed on both sides of the main beam in the suspension zone. The second connecting part 2 is fixedly connected to the main beam in the cable-stayed zone, and at least two sets of second connecting parts 2 are connected to one end of the main beam in the cable-stayed zone near the main beam in the suspension zone. The second connecting parts 2 are distributed on both sides of the main beam in the cable-stayed zone. The crossbeam 3 is connected to the two main cables in the overlapping zone. One end of the anchor cable 4 is connected to the first connecting part 1, passes through the crossbeam 3 in the middle, and the other end is connected to the second connecting part 2.

[0046] In fact, this invention is a wind-resistant device for the main girder of the suspended zone during the closure of the overlapping zone in a cable-stayed-suspension bridge during the construction period. The working principle is to use the stability of the statically indeterminate structure in the cable-stayed zone to apply restraint to the main girder of the suspended zone, which has weaker wind resistance, so as to improve the wind resistance of the main girder of the suspended zone.

[0047] In this invention, the second connecting part 2 connects to the main beam of the cable-stayed zone to connect the statically indeterminate structure of the cable-stayed zone; the first connecting part 1 connects to the main beam of the suspension zone to apply restraint to the main beam of the suspension zone; the anchor cable 4 is a connecting structure that connects the first connecting part 1 and the second connecting part 2 into a whole; the crossbeam 3 can further improve the connection strength of the anchor cable 4.

[0048] In some embodiments, such as Figure 4 As shown, the first connecting part 1 described above has been optimized. In this embodiment, the first connecting part 1 includes an anchor ring 11 and a base plate 12. The anchor ring 11 is fixedly connected to the base plate 12 and is used to fix the anchor cable 4. The base plate 12 is fixedly connected to the main beam of the suspension area.

[0049] During actual installation, the anchor cable 4 is knotted and tied to the anchor ring 11; the anchor ring 11 is welded or bolted to the base plate 12; the base plate 12 is anchored to the main beam of the suspension area; the base plate 12 has a large bottom area, which can increase the connection area between the first connecting part 1 and the main beam of the suspension area and improve the connection strength between the first connecting part 1 and the main beam of the suspension area.

[0050] In some embodiments, such as Figure 5 As shown, the second connecting part 2 has been optimized. In this embodiment, the second connecting part 2 includes a housing 20, a traction device 21, and a turning groove 22. The housing 20 is a cavity structure with one end open. The traction device 21 is connected to the anchor cable 4 and installed inside the housing 20 to provide cable force for the anchor cable 4. The turning groove 22 is connected to the opening of the housing 20 and is used to guide the anchor cable 4 to turn.

[0051] In actual operation, the shell 20 anchors the main beam of the inclined cable zone; the traction device 21 connects the anchor cable 4; the turning groove 22 guides the anchor cable 4 to turn, avoiding the anchor cable 4 from being directly in contact with the opening edge of the shell 20 for a long time and being damaged due to friction.

[0052] In fact, the second connecting part 2 not only serves to connect the main beam of the cable-stayed zone, but also provides cable force for the anchor cable 4: the traction device 21 connects the anchor cable 4 and can tension the anchor cable 4 to provide cable force for the anchor cable 4.

[0053] In some embodiments, such as Figure 5 As shown, the traction device 21 has been optimized. In this embodiment, the traction device 21 includes a slider 211, a lead screw 212, and an anchor plate 213. The slider 211 is connected to the anchor cable 4 and can slide horizontally inside the housing 20. One end of the lead screw 212 is connected to the slider 211, and the other end extends away from the opening of the housing 20 and penetrates through the housing 20. The anchor plate 213 is connected to one end of the lead screw 212 that penetrates through the housing 20 and is used to fix the lead screw 212 and the slider 211.

[0054] In fact, a small anchor ring is connected to the slider 211, and the anchor cable 4 is knotted and tied to the small anchor ring; the slider 211 is welded together with the lead rod 212, and the lead rod 212 has threads on its circumference; the end of the housing 20 through which the lead rod 212 passes has a hole, and the lead rod 212 can slide horizontally through the hole; the anchor plate 213 has a threaded hole, and the threads on the threaded hole match the threads on the circumference of the lead rod 212.

[0055] In actual operation, the pulling screw 212 causes the slider 211 to slide along the opening away from the housing 20, so that the anchor cable 4 changes from a slack state to a taut state. When the cable force of the anchor cable 4 reaches the predetermined value, the pulling screw 212 is stopped, and the anchor plate 213 is bolted to the end of the screw 212 that passes through the housing 20 until the anchor plate 213 is in contact with the housing 20.

[0056] In some embodiments, such as Figure 3 As shown, the crossbeam 3 has been optimized. In this embodiment, the crossbeam 3 is connected to a cable clamp 31 for connecting the main cable; the two ends of the crossbeam 3 are provided with turning holes 32 for the anchor cable 4 to pass through.

[0057] In fact, the crossbeam 3 is slidably connected to the two main cables in the overlapping area through the cable clamp 31. The crossbeam 3 can automatically adjust its connection position with the main cable according to the stress of the anchor cable 4. The anchor cable 4 can also slide relative to the crossbeam 3 through the turning hole 32 according to its own stress.

[0058] In some embodiments, such as Figure 3 As shown, the steering hole 32 has been optimized. In this embodiment, the steering hole 32 is a round hole with arc-shaped chamfers at both ends.

[0059] In actual operation, the two ends of the circular turning hole 32 are provided with arc-shaped chamfers to prevent the anchor cable 4 from contacting sharp parts and to prevent the anchor cable 4 from being damaged due to long-term friction with sharp parts when sliding in the turning hole 32.

[0060] In some embodiments, such as Figure 1 , 2 As shown, the anchor cable 4 has been optimized. In this embodiment, one end of the anchor cable 4 is connected to the anchor ring 11 of the first connecting part 1, and the other end is connected to the slider 211 of the second connecting part 2 on the same side. The middle of the anchor cable 4 passes through the turning hole 32 on the opposite side of the crossbeam 3, so that the anchor cable 4 is in the shape of a broken line on the plane. Multiple anchor cables 4 are connected and cross each other in the above manner.

[0061] In actual operation, the zigzag-shaped anchor cable 4 on the plane essentially increases the connection path of the anchor cable 4, which can strengthen the tension of the anchor cable 4 and increase the cable force of the anchor cable 4; at the same time, the wind-resistant device is expanded from the two-dimensional surface formed by the first connecting part 1, the second connecting part 2, the crossbeam 3 and the anchor cable 4 on the same vertical plane to the three-dimensional space formed by the first connecting part 1 and the second connecting part 2 on the same side, the crossbeam 3 on the opposite side and the anchor cable 4 connected in a three-dimensional manner, which enhances the stability of the wind-resistant device.

[0062] A construction method for the wind-resistant device of the main girder during the construction period of any of the above-described cable-stayed-suspension bridge systems is specifically as follows:

[0063] Preliminary preparations: Assemble multiple sets of first connecting parts 1: Weld or bolt the anchor ring 11 to the base plate 12 together;

[0064] Assemble multiple sets of second connecting parts 2: connect the steering groove 22 to the opening of the housing 20, connect one end of the lead screw 212 to the slider 211, then place the lead screw 212 and the slider 211 inside the housing 20 so that they can slide inside the housing 20, extend the other end of the lead screw 212 away from the opening of the housing 20 and penetrate the housing 20, and then connect the anchor plate 213 to the end of the lead screw 212 that penetrates the housing 20;

[0065] Assemble the crossbeam 3: Fix the two cable clips 31 to the two ends of the crossbeam 3 respectively, and open multiple circular turning holes 32 at both ends of the crossbeam 3. Round the two ends of each prototype turning hole 32.

[0066] Install the first connecting part 1: Fix multiple sets of the first connecting parts 1 to both ends of the main beam in the suspension area, and distribute them symmetrically on both sides of the main beam in the suspension area;

[0067] Install crossbeam 3: Open cable clamp 31 and put the two cable clamps 31 on the two main cables in the suspension area respectively;

[0068] Install the second connecting part 2: Fix multiple sets of the second connecting parts 2 to one end of the main beam in the cable-stayed zone near the suspension zone, and distribute them symmetrically on both sides of the main beam in the cable-stayed zone;

[0069] Install anchor cable 4: Connect one end of anchor cable 4 to anchor ring 11 of first connecting part 1, and pass the other end through turning hole 32 of crossbeam 3 to connect to slider 211 of second connecting part 2.

[0070] Adjust the anchor cable 4 tension: Pull the screw rod 212 to make the slider 211 slide along the opening away from the housing 20, so that the anchor cable 4 changes from a slack state to a taut state. When the tension of the anchor cable 4 reaches the predetermined value, stop pulling the screw rod 212 and bolt the anchor plate 213 to the end of the screw rod 212 that passes through the housing 20 until the anchor plate 213 is in contact with the housing 20.

[0071] In some embodiments, such as Figure 1 , 2 As shown, the installation method of the anchor cable 4 has been optimized. In this embodiment, one end of the anchor cable 4 is connected to the anchor ring 11 of the first connecting part 1, and the other end passes through the turning hole 32 on the opposite side of the crossbeam 3 and is connected to the slider 211 of the second connecting part 2 on the same side, so that the anchor cable 4 is in the shape of a broken line on the plane; multiple anchor cables 4 are connected and cross each other in the above manner.

[0072] In actual operation, the zigzag-shaped anchor cable 4 on the plane essentially increases the connection path of the anchor cable 4, which can strengthen the tension of the anchor cable 4 and increase the cable force of the anchor cable 4; at the same time, the wind-resistant device is expanded from the two-dimensional surface formed by the first connecting part 1, the second connecting part 2, the crossbeam 3 and the anchor cable 4 on the same vertical plane to the three-dimensional space formed by the first connecting part 1 and the second connecting part 2 on the same side, the crossbeam 3 on the opposite side and the anchor cable 4 connected in a three-dimensional manner, which enhances the stability of the wind-resistant device.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge, characterized in that: include: The first connecting part (1) is fixedly connected to the main beam of the suspension area. At least two sets of the first connecting parts (1) are connected to both ends of the main beam of the suspension area. The first connecting parts (1) are distributed on both sides of the main beam of the suspension area. The second connecting part (2) is fixedly connected to the main beam of the cable-stayed zone. At least two sets of the second connecting parts (2) are connected to one end of the main beam of the cable-stayed zone near the main beam of the suspension zone. The second connecting parts (2) are distributed on both sides of the main beam of the cable-stayed zone. A crossbeam (3) is connected to the two main cables in the overlapping area; Anchor cable (4), one end of which is connected to the first connecting part (1) and the other end is connected to the second connecting part (2) on the same side. The middle of the anchor cable (4) passes through one end of the crossbeam (3) on the opposite side.

2. The wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge as described in claim 1, characterized in that, The first connecting part (1) includes an anchor ring (11) and a base plate (12). The anchor ring (11) is fixedly connected to the base plate (12) for fixing the anchor cable (4). The base plate (12) is fixedly connected to the main beam of the suspension area.

3. The wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge as described in claim 1, characterized in that, The second connecting part (2) includes a housing (20), a traction device (21) and a turning groove (22). The housing (20) is a cavity structure with one end open. The traction device (21) is connected to the anchor cable (4) and installed inside the housing (20) to provide cable force to the anchor cable (4). The turning groove (22) is connected to the opening of the housing (20) and is used to guide the anchor cable (4) to turn.

4. The wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge as described in claim 3, characterized in that, The traction device (21) includes a slider (211), a lead screw (212), and an anchor plate (213). The slider (211) is connected to the anchor cable (4) and can slide horizontally inside the housing (20). One end of the lead screw (212) is connected to the slider (211), and the other end extends away from the opening of the housing (20) and penetrates the housing (20). The anchor plate (213) is connected to one end of the lead screw (212) that penetrates the housing (20) and is used to fix the lead screw (212) and the slider (211).

5. The wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge as described in claim 1, characterized in that, The crossbeam (3) is connected to a cable clamp (31) for connecting the main cable; the two ends of the crossbeam (3) are provided with turning holes (32) for the anchor cable (4) to pass through.

6. The wind-resistant device for the main girder during the construction period of a cable-stayed-suspension bridge as described in claim 5, characterized in that, The anchor cable (4) is in the shape of a broken line in the plane, and multiple anchor cables (4) are connected and cross each other in the manner described above.

7. A construction method for the wind-resistant device of the main girder during the construction period of a cable-stayed-suspension cooperative bridge according to any one of claims 1-6, characterized in that: include: Preliminary preparations: Assemble multiple sets of the first connecting parts (1), multiple sets of the second connecting parts (2), and the crossbeam (3); Install the first connecting part (1): Fix multiple sets of the first connecting parts (1) to both ends of the main beam in the suspension area and distribute them symmetrically on both sides of the main beam in the suspension area; Install the crossbeam (3): Open the cable clamp (31) and put the cable clamp (31) onto the main cable; Install the second connecting part (2): Fix multiple sets of the second connecting parts (2) to one end of the main beam in the cable-stayed zone near the suspension zone, and distribute them symmetrically on both sides of the main beam in the cable-stayed zone; Install anchor cable (4): Connect one end of the anchor cable (4) to the anchor ring (11) of the first connecting part (1), pass through the turning hole (32) of the crossbeam (3) in the middle, and connect the other end to the slider (211) of the second connecting part (2). Adjust the anchor cable (4) tension: Start the traction device (21) to tension the anchor cable (4) to achieve the predetermined tension.

8. The construction method for the wind-resistant device of the main girder during the construction period of a cable-stayed-suspension bridge as described in claim 7, characterized in that, One end of the anchor cable (4) is connected to the anchor ring (11) of the first connecting part (1), and the other end passes through the turning hole (32) on the opposite side of the crossbeam (3) and is connected to the slider (211) of the second connecting part (2) on the same side, so that the anchor cable (4) is in the shape of a broken line on the plane; multiple anchor cables (4) are connected and cross each other in the above manner.

9. The construction method for the wind-resistant device of the main girder during the construction period of a cable-stayed-suspension bridge as described in claim 8, characterized in that, The method of tensioning the anchor cable (4) by the traction device (21) is as follows: slide the slider (211) away from the opening of the housing (20), and after the anchor cable (4) reaches the predetermined cable force, connect and fix the anchor plate (213) and the screw rod (212) through one end of the housing (20) to maintain the cable force of the anchor cable (4).

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