Main cable limiting anchor rod device of rotary cable suspension bridge, suspension bridge and method

Abstract

According to the main cable limiting anchor rod device of the rotary cable suspension bridge, the suspension bridge and the method, vertical displacement of a main cable is restrained through a rigid anchor rod, the problem that a flexible anchor cable can only bear one-way tension is solved, and the construction complexity and the maintenance cost are reduced; according to the technical scheme, the device comprises a rigid anchor rod assembly, a cable clamp connecting assembly and an anchoring connecting assembly; the two ends of the rigid anchor rod assembly are connected with the cable clamp connecting assembly and the anchoring connecting assembly through connecting pieces correspondingly. The anchoring connecting assembly comprises an anchoring part base, a plurality of vertical perforated plates are arranged below the anchoring part base, ribbed steel bars penetrate through holes of the perforated plates to form shear keys, a lower lug plate is arranged above the anchoring part base, at least two connecting holes are formed in the center of the lower lug plate, and the connecting holes are connected with the lower lug plate. The lower lug plate is connected with the rigid anchor rod assembly through a connecting piece, a standby lug plate is arranged in the vertical direction of the lower lug plate and used for replacing an anchor rod, and at least two connecting holes used for replacing the anchor rod are formed in the standby lug plate.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and particularly relates to a main cable limiting anchor rod device, a suspension bridge and a method for a rotary cable suspension bridge. Background Technique

[0002] The statements in this part only provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] At present, in conventional two-tower suspension bridges or similar two-tower suspension bridges, when the main cable span is greater than the stiffening girder span, flexible anchor cables are generally used to limit the main cable in the area without suspenders. That is, one or more pairs of vertical suspenders are arranged in the area without suspenders and anchored to the foundation, thereby reducing the free length of the main cable. Research and implementation have been carried out on the Hunan Aizhai Bridge, the Jinshajiang Bridge at Tiger Leaping Gorge, etc. However, for a single-tower asymmetric high-low cable suspension bridge, there are the following three problems: First, the flexible anchor cable can only bear unidirectional tension and cannot provide constraints in the pressure direction. Therefore, it needs to be tensioned like a conventional suspender to limit the downward displacement of the main cable, and the solution of the cable force mainly depends on the experience of designers. The cable force size will affect the dead load state of the main cable, resulting in the main cable bearing the gravity load outside the stiffening girder, causing the reduction of the main cable performance and the increase of the complexity of solving the reasonable state; Second, since the flexible anchor cable needs to be tensioned during the construction process, tensioning equipment and temporary anchor fittings should be set up for installation. Therefore, a large construction space needs to be reserved. However, the low-side main cable of a single-tower suspension bridge is often located in the anchor or the stiffening girder, and the vertical length and tensioning space of the anchor cable are limited, which increases the design and construction difficulty; Third, the flexible anchor cable is prone to fatigue under long-term alternating loads, so it is difficult to avoid replacement. However, since it bears a part of the dead load, the tension of the temporary suspender is large during the replacement process, resulting in too high cost. Summary of the Invention

[0004] Aiming at the above problems, the present invention provides a main cable limiting anchor rod device, a suspension bridge and a method for a rotary cable suspension bridge. By using a rigid anchor rod to restrain the vertical displacement of the main cable, the problem that the flexible anchor cable can only bear unidirectional tension is solved, and the construction complexity and maintenance cost are reduced.

[0005] To achieve the above object, the present invention is realized by the following technical solutions:

[0006] In the first aspect, the present invention provides a main cable limiting anchor rod device for a rotary cable suspension bridge, including: a rigid anchor rod assembly, a cable clamp connection assembly and an anchoring connection assembly; both ends of the rigid anchor rod assembly are respectively connected to the cable clamp connection assembly and the anchoring connection assembly through connecting members;

[0007] The anchoring connection assembly includes an anchor base, and multiple vertical perforated plates are arranged below the anchor base. Ribbed steel bars pass through the holes of the perforated plates to form shear keys. An ear plate is arranged above the anchor base, and at least two connection holes are arranged in the center of the ear plate. The ear plate is connected to the rigid anchor rod assembly through a connecting piece. A spare ear plate is arranged in the vertical direction of the ear plate for use when replacing the anchor rod, and at least two connection holes for replacing the anchor rod are arranged in the spare ear plate.

[0008] Further, the rigid anchor rod assembly includes two anchor rods, and an upper ear plate and a lower ear plate are arranged on each anchor rod. The two ends of the anchor rod are respectively connected to the upper ear plate and the lower ear plate of the anchor rod through fasteners. The upper ear plate of the anchor rod is connected to the upper ear plate of the cable clamp connection assembly through a connecting piece; the lower ear plate of the anchor rod is connected to the ear plate through a connecting piece.

[0009] Further, alternatively, the rigid anchor rod assembly further includes two damper assemblies arranged on both sides of the two anchor rods. The damper assembly is a viscous fluid damper. Damper ear plates are arranged at both ends of the viscous fluid damper and are respectively connected to the cable clamp connection assembly and the anchoring connection assembly through connecting pieces.

[0010] Further, the upper ear plate and the lower ear plate of the anchor rod are made of cast steel or forged steel; the anchor rod is made of alloy steel, and the cross-section is circular or I-shaped.

[0011] Further, the cable clamp connection assembly is composed of two semi-circular cable clamps. The connection seam between the two cable clamps is a serrated connection seam and is clamped through fasteners; the upper ear plate is arranged on one of the cable clamps for connecting the upper ear plate of the anchor rod, and at least two connection holes are arranged on the upper ear plate.

[0012] In a second aspect, the present invention further provides a single-tower suspension bridge, including a main cable limit anchor device of a rotary cable suspension bridge as described above, as well as a main cable, suspension cables, stiffening girders, cable towers, and anchorages; one end of the main cable is fixedly connected to the anchorage at one end of the suspension bridge. The main cable rigid limit anchor device is arranged at a position close to the end of the main cable and is connected to the main cable through a cable clamp connection assembly. The main cable rigid limit anchor device is fixedly connected to the anchorage through an anchor base; the other end of the main cable passes through the top of the cable tower arranged in the middle of the suspension bridge and is fixedly connected to the anchorage at the other end of the suspension bridge; the stiffening girder is arranged below the main cable and is connected through suspension cables.

[0013] In a third aspect, the present invention further provides a design method for a main cable limit anchor device of a rotary cable suspension bridge, including the following steps:

[0014] S1. Establish the full-bridge dead load mechanical model of the single-tower suspension bridge;

[0015] S3. Preliminary determine the mechanical parameters of the anchor rod, and obtain the maximum design tensile and compressive forces of the anchor rod under the basic combination during the operation stage, as well as the stress amplitude of the fatigue load;

[0016] S3. Check the tensile strength, compressive strength, and fatigue strength of the anchor rod. At the same time, judge whether the vertical displacement of the main cable in the area without suspenders in the full-bridge dead load mechanical model meets the requirements. If not, return to the previous step to re-determine the parameters for calculation. If it meets the requirements, proceed to the next step;

[0017] S4. Determine the quantity and model of the fasteners on the anchor rod, the thickness of the ear plate, and the size of the connecting piece. At the same time, perform anti-slip and strength calculations on the cable clamp connection assembly, and perform anti-pulling calculations on the shear key of the anchor connection assembly.

[0018] Furthermore, for the main cable rigid limit anchor rod device that needs to achieve seismic resistance, the connecting piece on the anchor rod should be replaced with a shear pin device. Then, the parameters of the shear pin device should be determined according to the seismic force. The bearing capacity of the shear pin device needs to be greater than the shear force during the completed bridge operation stage, but less than the shear force under the seismic fortification intensity.

[0019] Fourthly, the present invention also provides an installation method for the main cable limit anchor rod device of a swing cable suspension bridge, including the following steps:

[0020] S1. When constructing the reinforcement bars of the anchor block or the stiffening girder at the corresponding position, accurately embed the anchor connection assembly;

[0021] S2. After the main cable erection is completed, install the cable clamp connection assembly;

[0022] S3. After the main cable reaches the completed bridge alignment, accurately measure the distance between the upper ear plate and the lower ear plate connection holes, consider the environmental temperature to correct the length of the anchor rod, and then accurately install it.

[0023] Furthermore, when the anchor rod needs to be replaced, first measure whether the main cable is in the completed bridge alignment. If the main cable is not in the completed bridge alignment, use the spare ear plate of the anchor connection assembly as a reaction frame, and tension or push the main cable to make it reach the completed bridge alignment; when the main cable meets the completed bridge alignment, remove the old anchor rod, replace it with a new anchor rod, and finally remove the temporary tensioning or pushing device to complete the replacement of the anchor rod.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are:

[0025] The two ends of the rigid anchor rod assembly of the present invention are respectively connected to the cable clamp connection assembly and the anchoring connection assembly through connectors; multiple vertical perforated plates are arranged below the anchor base of the anchoring connection assembly, and ribbed steel bars pass through the holes of the perforated plates to form shear keys. The lower ear plate above the anchor base is connected to the rigid anchor rod assembly through a connector, and a spare ear plate is arranged in the vertical direction of the lower ear plate for use when replacing the anchor rod. This design method enables the rigid limit anchor rod to bear both tension and pressure simultaneously. Without tensioning, it can effectively restrict the vertical displacement of the main cable and will not affect the dead load state of the main cable, providing a stable and reliable guarantee for the displacement control of the main cable of the single-tower suspension bridge. At the same time, it avoids the need to consume excessive costs when replacing the anchor rod. Only by installing the same anchor rod on the spare ear plate can the replacement be completed.

[0026] Each anchor rod in the rigid anchor rod assembly of the present invention is made of alloy steel, and the cross-section is circular or I-shaped. Moreover, the length of the single rigid anchor rod compared with the anchor of the flexible cable can be reduced by about 1m, greatly reducing the requirements for the installation space. At the same time, since the anchor rod does not bear the dead load of the stiffening girder, large-tonnage tensioning equipment is not required during construction and replacement, reducing the construction difficulty and enabling the smooth completion of relevant work even in a space-limited situation; for the single-tower suspension bridge in a strong earthquake area, two damper assemblies (viscous fluid dampers) are arranged on both sides of the rigid anchor rod assembly, and the high-strength bolts on the anchor rod are replaced with shear pin devices. When the seismic force exceeds the bearing capacity of the shear pin device of the anchor rod, the anchor rod breaks, and the damper participates in energy dissipation, effectively absorbing the instantaneous seismic action and avoiding the damage of the suspension cables and the anchoring system, greatly improving the safety of the single-tower suspension bridge under seismic action. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0028] Figure 1 It is a structural diagram of the single-tower suspension bridge and the limit anchor rod layout of the present invention;

[0029] Figure 2 It is an elevation view of the general rigid limit anchor rod device of the present invention;

[0030] Figure 3 It is a cross-sectional view of the rigid limit anchor rod device of the present invention;

[0031] Figure 4 It is an elevation view of the seismic-resistant rigid limit anchor rod device of the present invention;

[0032] Figure 5 It is a structural diagram of the anchoring connection assembly of the present invention.

[0033] In the figure: 1. Main cable; 2. Suspender; 3. Stiffening girder; 4. Cable tower; 5. Anchor; 6. Limit anchor rod device; 7. Rigid anchor rod assembly; 8. Saddle connection assembly; 9. Anchoring connection assembly; 10. Anchor rod; 11. Upper ear plate of the anchor rod; 12. Lower ear plate of the anchor rod; 13. Upper ear plate; 14. Lower ear plate; 15. Anchor base; 16. Perforated plate; 17. Reinforcing bar; 18. Spare ear plate; 19. Connector; 20. Shear pin device; 21. Damper assembly. Detailed implementation mode

[0034] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0035] It should be noted that the terms used herein are only for describing specific implementation modes and are not intended to limit the exemplary implementation modes according to the present invention. As used herein, unless the present invention clearly states otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0036] In the single-tower suspension bridge structure, since the span of the main cable on the low side is greater than the span of the stiffening girder, limit anchor rods are added in the range of the main cable without suspenders, and the vertical displacement of the main cable is restricted by the rigid anchor rods.

[0037] Embodiment 1

[0038] A main cable limit anchor rod device for a rotary cable suspension bridge disclosed in this embodiment, as Figure 2 - Figure 3 shown, includes: a rigid anchor rod assembly 7, a saddle connection assembly 8, and an anchoring connection assembly 9; both ends of the rigid anchor rod assembly 7 are respectively connected to the saddle connection assembly 8 and the anchoring connection assembly 9 through a connector 19;

[0039] The anchoring connection assembly 9 includes an anchor base 15. A plurality of vertical perforated plates 16 are arranged below the anchor base 15. Ribbed reinforcing bars 17 pass through the holes of the perforated plates 16 to form shear keys. A lower ear plate 14 is arranged above the anchor base 15. At least two connector holes 19 are arranged in the center of the lower ear plate 14. The lower ear plate 14 is connected to the rigid anchor rod assembly 7 through a connector 19. A spare ear plate 18 is arranged in the vertical direction of the lower ear plate 14 for use when replacing the anchor rod 10. At least two connector holes 19 for replacing the anchor rod 10 are opened in the spare ear plate 18, as Figure 5 shown.

[0040] Furthermore, the rigid anchor rod assembly 7 includes two anchor rods. An upper ear plate 11 and a lower ear plate 12 of the anchor rod are arranged on each anchor rod 10. Two ends of the anchor rod 10 are respectively connected to the upper ear plate 11 and the lower ear plate 12 of the anchor rod through fasteners. The upper ear plate 11 of the anchor rod is connected to the upper ear plate 13 of the cable clip connection assembly 8 through a connecting piece 19; the lower ear plate 12 of the anchor rod is connected to the lower ear plate 14 through a connecting piece 19.

[0041] Furthermore, or, as Figure 3 - Figure 4 As shown, the rigid anchor rod assembly 7 further includes two damper assemblies 21 arranged on both sides of the two anchor rods 10. The damper assembly 21 is a viscous fluid damper. Both ends of the viscous fluid damper are provided with damper ear plates and are respectively connected to the cable clip connection assembly 8 and the anchoring connection assembly 9 through a connecting piece 19. For a single-tower suspension bridge in a strong earthquake area, when using the damper assembly 21, the high-strength bolts on the anchor rod 10 are replaced with shear pin devices 20. When the seismic force exceeds the bearing capacity of the shear pin device 20 of the anchor rod 10, the anchor rod 10 breaks. At this time, the damper participates in energy dissipation to absorb the instantaneous seismic action and avoid damage to the suspension cables 2 and the anchoring system.

[0042] Furthermore, the upper ear plate 11 and the lower ear plate 12 of the anchor rod are made of cast steel or forged steel; the anchor rod 10 is made of alloy steel, and the cross-section is circular or I-shaped.

[0043] Furthermore, the cable clip connection assembly 8 is composed of two semi-circular cable clips. The connection seam between the two cable clips is a serrated connection seam and is clamped through fasteners; the upper ear plate 13 is arranged on one of the cable clips and is used to connect the upper ear plate 11 of the anchor rod. At least two connecting piece 19 holes are arranged on the upper ear plate 13. The cable clip adopts the structural form of a conventional cable clip of the suspension cable 2. The main structure of the cable clip is made of cast steel or forged steel. A high-friction gasket is arranged inside the cable clip to disperse local stress. When using the damper assembly 21, the number of connecting piece 19 holes on the upper ear plate 13 is four.

[0044] Embodiment 2

[0045] This embodiment provides a single-tower suspension bridge, as Figure 1As shown in the figure, it includes a rigid limiting anchor rod device 6 of the main cable 1 as described above, as well as the main cable 1, the sling 2, the stiffening girder 3, the cable tower 4 and the anchor 5; one end of the main cable 1 is fixedly connected to the anchor 5 at one end of the suspension bridge, and the rigid limiting anchor rod device 6 of the main cable 1 is arranged at a position close to the end of the main cable 1 and is connected to the main cable 1 through a cable clamp connection assembly 8. The rigid limiting anchor rod device 6 of the main cable 1 is fixedly connected to the anchor 5 through an anchor base 15; the other end of the main cable 1 passes through the top of the cable tower 4 arranged in the middle of the suspension bridge and is fixedly connected to the anchor 5 at the other end of the suspension bridge; the stiffening girder 3 is arranged below the main cable 1 and is connected through the sling 2.

[0046] Embodiment 3

[0047] The design method of a rigid limiting anchor rod device 6 of the main cable 1 in this embodiment includes the following steps:

[0048] S1. Establish a full-bridge dead load mechanical model of the single-tower suspension bridge;

[0049] S2. Initially determine the mechanical parameters of the anchor rod 10, consider the loads during the operation stage, including vehicle load, wind load, temperature load, etc., and obtain the maximum design tension and pressure of the anchor rod 10 under the basic combination during the operation stage, as well as the stress amplitude of the fatigue load;

[0050] S3. Check the tensile strength, compressive strength, compressive stability, and fatigue strength of the anchor rod 10 according to the requirements and specifications. At the same time, judge whether the vertical displacement of the main cable 1 in the area without the sling 2 in the full-bridge model meets the requirements. If not, return to the previous step to redetermine the parameters for calculation. If it meets the requirements, proceed to the next step;

[0051] S4. Determine the number and type of high-strength bolts of the anchor rod 10, the thickness of the ear plate, and the diameter of the connecting piece 19 according to the axial force of the anchor rod 10. At the same time, perform anti-slip and strength calculations on the cable clamp connection assembly 8, and perform anti-pull calculation on the shear key of the anchor connection assembly 9.

[0052] Furthermore, for the rigid limiting anchor rod device 6 of the main cable 1 that needs to achieve seismic resistance function, the high-strength bolts on the anchor rod 10 should be replaced with shear pin devices 20. Then, the parameters of the shear pin devices 20 should be determined according to the seismic force. The bearing capacity of the shear pin devices 20 needs to be greater than the shear force during the completed bridge operation stage, but less than the shear force under the seismic fortification intensity, so as to disconnect during the earthquake action. At this time, the damper participates in energy dissipation.

[0053] Embodiment 4

[0054] This embodiment provides an installation method of a rigid limiting anchor rod device 6 of the main cable 1, including the following steps:

[0055] S1. When constructing the reinforcing steel bars 17 of the anchor 5 or the stiffening girder 3 at the corresponding positions, accurately embed the anchoring connection assembly 9;

[0056] S2. After the main cable 1 is erected, install the cable clamp connection assembly 8;

[0057] S3. After the main cable 1 reaches the completed bridge alignment, accurately measure the distance between the holes of the connecting piece 19 of the upper ear plate 13 and the lower ear plate 14, consider the correction of the length of the anchor rod 10 due to the environmental temperature, and then accurately install it.

[0058] Furthermore, when the anchor rod 10 needs to be replaced, first measure whether the main cable 1 is in the completed bridge alignment. If the main cable 1 is not in the completed bridge alignment, use the spare ear plate 18 of the anchoring connection assembly 9 as a reaction frame, and tension or push the main cable 1 to make it reach the completed bridge alignment; when the main cable 1 meets the completed bridge alignment, remove the old anchor rod 10, replace it with a new anchor rod 10, and finally unload the temporary tensioning or pushing device to complete the replacement of the anchor rod 10.

[0059] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications or deformations that can be made without creative efforts on the basis of the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A main cable limit anchor device for a revolving cable suspension bridge, characterized in that: include: A rigid anchor rod assembly, a cable clamp connection assembly and an anchor connection assembly; both ends of the rigid anchor rod assembly are connected to the cable clamp connection assembly and the anchor connection assembly through connecting pieces respectively; The anchor connection assembly includes an anchor base, a plurality of vertical perforated plates are arranged below the anchor base, ribbed steel bars are passed through the holes of the perforated plates to form shear keys, a lower ear plate is arranged above the anchor base, at least two connecting holes are arranged in the center of the lower ear plate, the lower ear plate is connected to the rigid anchor assembly through a connecting piece, a spare ear plate is arranged in the vertical direction of the lower ear plate for use when replacing the anchor, and at least two connecting holes for replacing the anchor are arranged in the spare ear plate.

2. A main cable limiting anchor rod device for a revolving cable suspension bridge according to claim 1, characterized in that: The rigid anchor rod assembly includes two anchor rods, each of which is provided with an upper ear plate and a lower ear plate of the anchor rod, the two ends of the anchor rod are respectively connected to the upper ear plate and the lower ear plate of the anchor rod by fasteners, the upper ear plate of the anchor rod is connected to the upper ear plate of the cable clamp connection assembly by a connecting piece; the lower ear plate of the anchor rod is connected to the lower ear plate by a connecting piece.

3. A main cable limit anchor device for a revolving cable suspension bridge as claimed in claim 2, characterized in that: Alternatively, the rigid anchor rod assembly further comprises two damper assemblies arranged on both sides of the two anchor rods, wherein the damper assemblies are viscous fluid dampers, and damper ear plates are arranged at both ends of the viscous fluid dampers, and are respectively connected to the cable clamp connection assembly and the anchor connection assembly through connecting pieces.

4. The main cable limiting anchor rod device of a revolving cable suspension bridge according to claim 1, characterized in that: The anchor rod upper end ear plate and the anchor rod lower end ear plate are made of cast steel or forged steel; the anchor rod is made of alloy steel, and the cross section is circular or I-shaped.

5. The main cable limiting anchor rod device of a revolving cable suspension bridge according to claim 2, characterized in that: The cable clamp connection assembly consists of two semicircular cable clamps, the connecting seam between the two cable clamps is a serrated connecting seam and is clamped by a fastener; the upper ear plate is arranged on one of the cable clamps and is used to connect the upper ear plate of the anchor rod, and at least two connecting holes are arranged on the upper ear plate.

6. A single-tower suspension bridge, characterized in that: It comprises a main cable limiting anchor rod device of a revolving cable suspension bridge as described in any one of claims 1 to 5, as well as a main cable, a sling, a stiffening beam, a cable tower and an anchor; one end of the main cable is anchored to the anchor at one end of the suspension bridge, the main cable rigid limiting anchor rod device is arranged at a position close to the end of the main cable, is connected to the main cable through a cable clamp connection assembly, and the main cable rigid limiting anchor rod device is anchored to the anchor through an anchor base; the other end of the main cable passes through the top of the cable tower arranged in the middle of the suspension bridge, and is anchored to the anchor at the other end of the suspension bridge; the stiffening beam is arranged below the main cable and is connected through a sling.

7. A design method for a main cable limit anchor device of a revolving cable suspension bridge according to any one of claims 1 to 6, characterized in that: The steps include: S1. Establish a full-bridge constant load mechanical model of a single-tower suspension bridge; S2. Preliminarily design the mechanical parameters of the anchor rod to obtain the maximum design tension, pressure, and fatigue load stress amplitude of the anchor rod under the basic combination in the operation stage; S3. Check the tensile strength, compressive strength and fatigue strength of the anchor rod, and determine whether the vertical displacement of the main cable in the non-hanger area in the full-bridge constant load mechanical model meets the requirements. If not, return to the previous step to re-prepare parameters for calculation. If yes, proceed to the next step. S4. Determine the number and type of fasteners on the anchor rod, the thickness of the ear plate, and the size of the connector, and perform anti-slip and strength calculations on the cable clamp connection assembly, and perform anti-pullout calculations on the shear key of the anchor connection assembly.

8. The design method of the main cable limit anchor device of the revolving cable suspension bridge according to claim 7, characterized in that: For the main cable rigid limit anchor device to achieve earthquake resistance, the connecting parts on the anchor should be replaced with shear pin devices. The parameters of the shear pin devices should be determined according to the seismic force. The bearing capacity of the shear pin devices needs to be greater than the shear force in the bridge operation stage, but should be less than the shear force under the earthquake fortification intensity.

9. The method for installing the main cable limit anchor device of a revolving cable suspension bridge according to claims 1 to 6, characterized in that: The following steps are involved: S1. When constructing steel bars for anchorage or stiffening beams at corresponding locations, accurately embed anchor connection components; S2. After the main cable is installed, install the cable clamp connection assembly; S3. After the main cable reaches the completed bridge line shape, accurately measure the distance between the connection holes of the upper ear plate and the lower ear plate, correct the length of the anchor rod considering the ambient temperature, and then accurately install it.

10. The method for installing the main cable limit anchor device of a revolving cable suspension bridge according to claim 9, characterized in that: When the anchor rod needs to be replaced, first measure whether the main cable is in a bridge shape. If the main cable is not in a bridge shape, use the spare ear plate of the anchor connection assembly as a reaction frame to tension or push the main cable to achieve a bridge shape. When the main cable meets the bridge shape, remove the old anchor rod and replace it with a new one. Finally, remove the temporary tensioning or pushing device to complete the replacement of the anchor rod.

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