Adaptive Distributed Force Transmission Rotary Anchoring System and Method for Main Cable Inclination Variation

Abstract

This invention provides an adaptive distributed force transmission rotary anchoring system and method for main cable inclination angle changes. The system includes an arc-shaped cable guide body positioned outside the steel-concrete composite platform; arc plates on the cable guide body located on the outer side of the axial bottom of the arc-shaped steel shell; a rotating cable saddle head installed within the rotating cable saddle seat; end elastic balance sliding pairs contacting the outer wall of the arc-shaped steel shell; and elastic deformation sliding pairs further contacting the inner arc-shaped walls of the cable guide plates on both sides of the rotating cable saddle head and the outer walls of the arc-shaped steel shell on both sides of the rotating cable saddle seat. This system is an adaptive angle-changing distributed force transmission system for steel-concrete composite suspension bridges. It can extend the design service life of anchorages, solve the problems of traditional reinforced concrete anchorages being unable to adapt to changes in the main cable strand angle during construction and bridge completion, and address the excessive stress concentration at the cable saddle. It also simplifies construction and saves costs to some extent.

Description

Technical Field

[0001] This invention belongs to the field of bridge technology, specifically to suspension bridges, and more specifically to a distributed force transmission rotary anchoring system and method that adapts to changes in the inclination angle of the main cable. Background Technology

[0002] During the construction of the anchor span of a slewing cable suspension bridge, from the first cable strand to the final bridge alignment, the angle at which the cable strand enters the anchor saddle groove will inevitably change with the construction process. This change will cause the saddle groove diaphragm to be subjected to considerable compressive force, resulting in changes in the diaphragm spacing, making normal construction impossible, or even posing considerable safety hazards.

[0003] The slewing cable suspension bridge uses traditional concrete anchorages. The cable saddles set on the anchorages cannot rotate. The entire construction process generates excess force pointing outward on the cable saddles, which has a certain impact on the overall stability of the cable saddles.

[0004] Traditional anchorages, designed to meet the needs of slewing cable suspension bridges, typically use several cable saddles to complete the main cable rotation. However, this method has a significant drawback: it results in noticeable localized stress concentration in the anchorage concrete at the corresponding cable saddles. The presence of both tensile and compressive forces in the adjacent area can lead to concrete cracking and affect the overall service life of the bridge.

[0005] In the traditional construction of anchorages for cable-stayed bridges, the removal of anchorages after the concrete has reached its strength requires a significant amount of manpower and material resources.

[0006] In summary, the traditional anchorage system is not ideal in terms of stress distribution and cannot adapt to the mechanical characteristics of the anchorage span of a slewing cable suspension bridge. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a distributed force transmission slewing anchoring system and method that adapts to changes in the inclination angle of the main cable, thereby solving the technical problem that the adaptability of the slewing anchoring process to the mechanical characteristics of the anchor span of the slewing cable suspension bridge needs to be further improved.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] An adaptive main cable tilt angle distribution force transmission rotary anchoring system includes an arc-shaped cable guide body, which is disposed outside the steel-concrete composite platform.

[0010] The arc-shaped cable guide body includes a cable guide arc plate, a rotating cable saddle head is provided at the middle position of the arc-shaped inner wall of the cable guide arc plate, and end elastic balance sliding pairs are respectively provided at both ends of the arc-shaped inner wall of the cable guide arc plate.

[0011] The steel-concrete composite platform includes an arc-shaped steel shell, and a rotating cable saddle is provided in the middle of the outer wall of the arc-shaped steel shell.

[0012] The cable guide arc plate is located on the outer side of the axial bottom of the arc-shaped steel shell, and the rotating cable saddle head is installed inside the rotating cable saddle seat; the end elastic balance sliding pair is in contact with the outer wall of the arc-shaped steel shell.

[0013] The inner arc-shaped walls of the cable guide plates on both sides of the rotating cable saddle head and the outer walls of the arc-shaped steel shells on both sides of the rotating cable saddle seat are in contact through elastic deformation sliding pairs.

[0014] The present invention also has the following technical features:

[0015] Specifically, the elastic deformation sliding pair includes an arc-shaped groove with its opening facing outward in the radial direction. Multiple detachable spring buffers are installed in the bottom of the arc-shaped groove on the radially outer side, and the spring buffers are in contact with the cable guide arc plate. Multiple hemispherical hinge sliding pairs are installed on the side wall on the radially inner side of the arc-shaped groove. The hemispherical hinge sliding pairs are in contact with the arc-shaped steel shell.

[0016] Preferably, the spring buffer body includes a buffer base, which is installed at the bottom of the arc-shaped groove. One end of the buffer outer cylinder is vertically fixed on the buffer base. The central axis of the buffer outer cylinder is radially arranged. One end of the buffer inner cylinder is fitted inside the other end of the buffer outer cylinder. A buffer top plate is vertically fixed on the other end of the buffer inner cylinder. The buffer top plate rests against the inner wall of the cable guide arc plate. A buffer spring is fitted around the buffer outer cylinder and the buffer inner cylinder. One end of the buffer spring rests against the buffer base, and the other end of the buffer spring rests against the buffer top plate.

[0017] Furthermore, the buffer base is provided with a locking hole and a traction hole. The two ends of the locking hole penetrate the side wall of the buffer base, the outer end of the traction hole penetrates the side wall of the buffer base, and the inner end of the traction hole is connected to the middle position of the locking hole and is set perpendicularly.

[0018] A locking spring seat is fixedly installed in the locking holes on both sides of the traction hole. A locking guide rod is installed on the locking spring seat. The inner end of the locking guide rod passes through the locking spring seat and can move telescopically relative to the locking spring seat. A locking pin is fixedly provided on the outer end of the locking guide rod. A locking spring is fitted on the locking guide rod. One end of the locking spring abuts against the locking spring seat, and the other end of the locking spring abuts against the locking pin.

[0019] One end of the traction rope is connected to the inner end of the locking guide rod. The other end of the traction rope passes around the pulley installed at the corner of the locking hole and the traction hole and enters the traction hole. The other end of the traction rope extends out of the traction hole and is connected to the annular pull rod. Pulling the annular pull rod can control the locking pin to extend or extend into the locking hole.

[0020] Multiple spring buffer mounting slots are provided in the bottom of the radially outer side of the arc-shaped groove. The grooves are opened in the axial direction, and two spring buffers are installed in each spring buffer mounting slot. Two pairs of locking pin holes are provided on the side wall of each spring buffer mounting slot. The locking pin head can enter the locking pin hole to lock the buffer base on the arc-shaped groove.

[0021] Specifically, the hemispherical hinge sliding pair includes a hemispherical hinge, the tail end of which is fixedly installed on the radially inner sidewall of the arc-shaped groove, the ball head end of which is installed in the ball head hinge seat, and the ball head end of which is locked in the ball head hinge seat by a locking ring. The ball head hinge seat is fixed on the radially outer side of the second sliding support, and a second sliding roller assembly is provided on the radially inner side of the second sliding support. The second sliding roller assembly is in contact with the arc-shaped steel shell.

[0022] Preferably, a rubber plate is provided inside the arc-shaped groove at the position where it contacts the cable guide arc plate.

[0023] Specifically, the end elastic balance sliding pair includes multiple radially arranged spring guide telescopic rods. The large ends of the multiple spring guide telescopic rods are fixedly installed on the inner wall of the cable guide arc plate, and the small ends of the multiple spring guide telescopic rods are all installed on the radially outer side of the first sliding support. Each spring guide telescopic rod is fitted with a return spring. One end of the return spring abuts against the inner wall of the cable guide arc plate, and the other end of the return spring abuts against the outer side of the first sliding support. The radially inner side of the first sliding support is provided with a first sliding roller assembly, which contacts the arc-shaped steel shell.

[0024] Specifically, the steel-concrete composite platform also includes multiple stiffening plates axially arranged on the inner wall of the arc-shaped steel shell; a bottom grid is provided on the bottom surface inside the rotating cable saddle, and the bottom grid is located on the radial inner side of the arc-shaped steel shell; the arc-shaped steel shell is filled with filling concrete; and limit plates are also provided on the axial upper part of both ends of the outer circumferential side of the arc-shaped steel shell.

[0025] Preferably, the arc-shaped outer wall of the cable guide plate is provided with multiple pairs of main cable constraint blocks.

[0026] This invention also protects a rotary anchoring method, which employs a distributed force transmission rotary anchoring system with adaptive main cable inclination change as described above.

[0027] Compared with the prior art, the present invention has the following technical effects:

[0028] (I) The system of the present invention is an adaptive angle-changing steel-concrete composite distributed force transmission system for suspension bridges, which can extend the design service life of anchorages, solve the problems that traditional reinforced concrete anchorages cannot adapt to changes in the angle of the main cable strands and excessive stress concentration at the cable saddle during the construction to bridge completion process, and at the same time simplify construction and save costs to a certain extent.

[0029] (II) The system of the present invention can adaptively change its own angle during the process from construction to bridge completion without changing the IP point. This solves the problem that the saddle at the slewing cable anchor has a certain angle with the saddle in the early stage of main cable erection, which causes the saddle groove partition to deform greatly under the influence of the pull-out force. It also solves the problem that the saddle of the traditional concrete anchor cannot adaptively change its own angle as the construction process progresses, which generates an extra force pointing outward on the saddle throughout the process.

[0030] (III) The system of the present invention can uniformly transmit the main cable force of the entire cable guide group to the steel-concrete composite platform through the hemispherical hinge sliding pair of the elastic deformation sliding pair, thereby avoiding the occurrence of local stress concentration.

[0031] (IV) The arc-shaped steel shell of the steel-concrete composite platform of the present invention can not only improve the anchor strength, but also reduce the friction with the hemispherical hinge sliding pair. It can also be used as a mold in the construction process, eliminating the need for the preparation of the pouring template and the dismantling work in the construction process, saving time and manpower costs.

[0032] (V) In the arc-shaped cable assembly of the system of the present invention, the arc-shaped cable body and the elastic deformation sliding pair achieve compression deformation between them through the spring buffer body.

[0033] (VI) In the arc-shaped cable assembly of the system of the present invention, the arc-shaped cable body and the elastic deformation sliding pair transmit the pressure between the two during the rotation of the main cable through the rubber plate.

[0034] (VII) The elastic deformation sliding pair of the system of the present invention and the steel-concrete composite platform are kept in contact and do not collide during the change of the main cable angle by means of a hemispherical hinge sliding pair and a spring buffer.

[0035] (VIII) When installing the sliding roller assembly of the hemispherical hinge sliding pair of the present invention, make its displacement path as vertical as possible to match the actual displacement path. Even if there is a certain deviation, it can adjust itself under the gradually increasing load during construction after installation. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of a distributed force transmission rotary anchoring system that adapts to changes in the inclination angle of the main cable.

[0037] Figure 2This is a top view schematic diagram of a distributed force transmission rotary anchoring system that adapts to changes in the inclination angle of the main cable.

[0038] Figure 3 This is a schematic diagram of the overall structure of the arc-shaped cable guide.

[0039] Figure 4 This is a schematic diagram of the overall structure of the steel-concrete composite platform.

[0040] Figure 5 This is a schematic diagram of the internal structure of the steel-concrete composite platform.

[0041] Figure 6 This is a schematic diagram of the overall structure of the end elastic balance sliding pair.

[0042] Figure 7 This is a schematic diagram of the overall structure of an elastic deformation sliding pair.

[0043] Figure 8 This is a schematic diagram of the overall structure of the spring buffer.

[0044] Figure 9 This is a schematic diagram of the internal structure of the buffer base.

[0045] Figure 10 This is a schematic diagram of the spring buffer mounting slot.

[0046] Figure 11 This is an exploded structural diagram of a hemispherical hinge sliding pair.

[0047] The meanings of the labels in the figure are as follows: 1-arc-shaped cable guide body, 2-steel-concrete composite platform body, 3-elastic deformation sliding pair.

[0048] 101-Guide cable arc plate, 102-Rotating cable saddle head, 103-End elastic balance sliding pair, 104-Main cable constraint block.

[0049] 10301-Spring-guided telescopic rod, 10302-First sliding support, 10303-Reset spring, 10304-First sliding roller assembly.

[0050] 201-Arc-shaped steel shell, 202-Rotating cable saddle seat, 203-Stiffening plate, 204-Bottom grid, 205-Filling concrete, 206-Limiting plate.

[0051] 301-Arc-shaped groove, 302-Rubber plate, 303-Spring buffer body, 304-Hemispherical hinge sliding pair, 305-Spring buffer body mounting groove, 306-Locking pin hole.

[0052] 30301 - Buffer base, 30302 - Buffer outer cylinder, 30303 - Buffer inner cylinder, 30304 - Buffer top plate, 30305 - Buffer spring.

[0053] 3030101-Locking hole, 3030102-Traction hole, 3030103-Locking spring seat, 3030104-Locking guide rod, 3030105-Locking pin, 3030106-Locking spring, 3030107-Traction rope, 3030108-Pulley, 3030109-Ring pull rod.

[0054] 30401-Hemispherical hinge, 30402-Ball joint, 30403-Locking ring, 30404-Second sliding support, 30405-Second sliding roller assembly.

[0055] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0056] It should be noted that, unless otherwise specified, all components in this invention are components known in the prior art.

[0057] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0058] Example 1:

[0059] This embodiment presents a distributed force transmission rotary anchoring system that adapts to changes in the main cable's inclination angle, such as... Figure 1 and Figure 2 As shown, it includes an arc-shaped cable guide body 1, which is disposed on the outside of the steel-concrete composite platform 2.

[0060] like Figure 3 As shown, the arc-shaped cable guide body 1 includes a cable guide arc plate 101. A rotating cable saddle head 102 is provided at the middle position of the arc-shaped inner wall of the cable guide arc plate 101, and end elastic balance sliding pairs 103 are respectively provided at both ends of the arc-shaped inner wall of the cable guide arc plate 101.

[0061] like Figure 4 As shown, the steel-concrete composite platform 2 includes an arc-shaped steel shell 201, and a rotating cable saddle seat 202 is provided in the middle of the outer wall of the arc-shaped steel shell 201.

[0062] like Figure 1 and Figure 2 As shown, the cable guide plate 101 is located on the outer side of the axial bottom of the arc-shaped steel shell 201, and the rotating cable saddle head 102 is installed inside the rotating cable saddle seat 202; the end elastic balance sliding pair 103 is in contact with the outer wall of the arc-shaped steel shell 201.

[0063] like Figure 1 and Figure 2As shown, the inner arc-shaped walls of the cable guide arc plates 101 on both sides of the rotating cable saddle head 102 and the outer walls of the arc-shaped steel shells 201 on both sides of the rotating cable saddle seat 202 are in contact with each other through elastic deformation sliding pairs 3.

[0064] As one specific solution in this embodiment, such as Figure 6 As shown, the end elastic balance sliding pair 103 includes a plurality of radially arranged spring guide telescopic rods 10301. The large ends of the plurality of spring guide telescopic rods 10301 are fixedly installed on the inner wall of the cable guide arc plate 101, and the small ends of the plurality of spring guide telescopic rods 10301 are all installed on the radial outer side of the first sliding support 10302. A return spring 10303 is fitted on each spring guide telescopic rod 10301. One end of the return spring 10303 abuts against the inner wall of the cable guide arc plate 101, and the other end of the return spring 10303 abuts against the outer side of the first sliding support 10302. A first sliding roller group 10304 is provided on the radial inner side of the first sliding support 10302, and the first sliding roller group 10304 contacts the arc-shaped steel shell 201.

[0065] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, multiple pairs of main cable constraint blocks 104 are provided on the arc-shaped outer wall of the cable guide plate 101; in this embodiment, the main cable of the suspension bridge is arranged on the arc-shaped outer wall of the cable guide plate 101 of the arc-shaped cable guide body 1, and is limited by the main cable constraint blocks 104.

[0066] As one specific solution in this embodiment, such as Figure 4 and Figure 5 As shown, the steel-concrete composite platform 2 also includes multiple stiffening plates 203 axially arranged on the inner wall of the arc-shaped steel shell 201; the bottom surface of the rotating cable saddle 202 is provided with a bottom grid 204, which is located on the radial inner side of the arc-shaped steel shell 201; the arc-shaped steel shell 201 is filled with filling concrete 205; and limit plates 206 are also provided on the axial upper part of both ends of the outer circumferential side of the arc-shaped steel shell 201.

[0067] As one specific solution in this embodiment, such as Figure 7 As shown, the elastic deformation sliding pair 3 includes an arc-shaped groove 301 with the groove opening facing outward in the radial direction. Multiple detachable spring buffers 303 are installed in the bottom of the groove on the radially outer side of the arc-shaped groove 301, and the spring buffers 303 are in contact with the cable guide arc plate 101. Multiple hemispherical hinge sliding pairs 304 are installed on the side wall on the radially inner side of the arc-shaped groove 301. The hemispherical hinge sliding pairs 304 are in contact with the arc-shaped steel shell 201.

[0068] Further preferred, such as Figure 8As shown, the spring buffer body 303 includes a buffer base 30301, which is installed at the bottom of the arc-shaped groove 301. One end of the buffer outer cylinder 30302 is vertically fixed on the buffer base 30301. The central axis of the buffer outer cylinder 30302 is radially arranged. One end of the buffer inner cylinder 30303 is fitted inside the other end of the buffer outer cylinder 30302. A buffer top plate 30304 is vertically fixed on the other end of the buffer inner cylinder 30303. The buffer top plate 30304 rests on the inner wall of the cable guide arc plate 101. A buffer spring 30305 is fitted outside the buffer outer cylinder 30302 and the buffer inner cylinder 30303. One end of the buffer spring 30305 rests on the buffer base 30301, and the other end of the buffer spring 30305 rests on the buffer top plate 30304.

[0069] Further preferred, such as Figure 9 As shown, the buffer base 30301 has a locking hole 3030101 and a traction hole 3030102. The two ends of the locking hole 3030101 pass through the side wall of the buffer base 30301, the outer end of the traction hole 3030102 passes through the side wall of the buffer base 30301, and the inner end of the traction hole 3030102 is connected to the middle position of the locking hole 3030101 and is set vertically.

[0070] like Figure 9 As shown, a locking spring seat 3030103 is fixedly installed in the locking holes 3030101 on both sides of the traction hole 3030102. A locking guide rod 3030104 is installed on the locking spring seat 3030103. The inner end of the locking guide rod 3030104 passes through the locking spring seat 3030103 and can extend and retract relative to the locking spring seat 3030103. A locking pin head 3030105 is fixedly provided on the outer end of the locking guide rod 3030104. A locking spring 3030106 is fitted on the locking guide rod 3030104. One end of the locking spring 3030106 abuts against the locking spring seat 3030103, and the other end of the locking spring 3030106 abuts against the locking pin head 3030105.

[0071] like Figure 9 As shown, one end of a traction rope 3030107 is connected to the inner end of the locking guide rod 3030104. The other end of the traction rope 3030107 passes over the pulley 3030108 installed at the corner of the locking hole 3030101 and the traction hole 3030102 and enters the traction hole 3030102. The other end of the traction rope 3030107 extends out of the traction hole 3030102 and is connected to the annular pull rod 3030109. Pulling the annular pull rod 3030109 can control the locking pin head 3030105 to extend or extend into the locking hole 3030101.

[0072] like Figure 10 As shown, multiple spring buffer mounting slots 305 are provided in the bottom of the radially outer side of the arc-shaped groove 301. The groove direction of the spring buffer mounting slots 305 is axial. Two spring buffers 303 are installed in each spring buffer mounting slot 305. Two pairs of locking pin holes 306 are provided on the side wall of each spring buffer mounting slot 305. The locking pin head 3030105 can enter the locking pin hole 306 to lock the buffer base 30301 on the arc-shaped groove 301.

[0073] Further preferred, such as Figure 11 As shown, the hemispherical hinge sliding pair 304 includes a hemispherical hinge 30401. The tail end of the hemispherical hinge 30401 is fixedly installed on the radially inner side wall of the arc-shaped groove 301. The ball end of the hemispherical hinge 30401 is installed in the ball head hinge seat 30402. The ball head end of the hemispherical hinge 30401 is locked in the ball head hinge seat 30402 by a locking ring 30403. The ball head hinge seat 30402 is fixed on the radially outer side of the second sliding support 30404. A second sliding roller group 30405 is provided on the radially inner side of the second sliding support 30404. The second sliding roller group 30405 is in contact with the arc-shaped steel shell 201.

[0074] Further preferred, such as Figure 10 As shown, a rubber plate 302 is provided at the position where the arc-shaped groove 301 contacts the cable guide arc plate 101.

[0075] Example 2:

[0076] This embodiment provides a rotary anchoring method, which is the distributed force transmission rotary anchoring system with adaptive main cable inclination angle change given in Embodiment 1.

[0077] This method is performed according to the following steps:

[0078] Step 1: The bottom of the adaptive main cable tilt angle distribution force transmission rotary anchoring system is poured with concrete to form a plane to facilitate subsequent construction. The rotating cable saddle 202 is erected, and the steel-concrete composite platform 2 is poured in sections. The sections of the arc-shaped steel shell 201 are connected by welding until the capping work is completed.

[0079] Step 2: Install the ball joint 30402 to the hemispherical hinge 30401 on the arc groove 301, install the locking ring 30403 to prevent the two from separating during use, and install the second sliding roller group 30405 below the second sliding support 30404.

[0080] Step 3: Install the spring buffer 303. Pull the annular pull rod 3030109 on the buffer base 30301, causing the locking pin 3030105 to retract under the traction of the pull rope 3030107. The buffer base 30301 is pushed into the spring buffer mounting groove 305. After it is fully pushed in, release the annular pull rod 3030109. The locking pin 3030105 automatically springs back and inserts into the locking pin holes 306 on both sides of the spring buffer mounting groove 305 to complete the locking. If the spring buffer 303 needs to be replaced later, use a hydraulic jack to temporarily replace the spring buffer 303. Compress the spring buffer 303, pull the annular pull rod 3030109 to remove it, install the new spring buffer 303 according to the above installation method, and then remove the hydraulic jack.

[0081] Step four: Insert a rubber plate 302 into the gap between the arc-shaped cable guide body 1 and the elastic sliding deformation sliding pair 3 to form an arc-shaped cable guide pair. Fix the arc-shaped cable guide body 1 and the elastic sliding deformation sliding pair 3 to prevent the elastic sliding deformation sliding pair 3 from having excessive displacement, which is not conducive to subsequent installation.

[0082] Step 5: Install the arc-shaped cable guide pair to the steel-concrete composite platform 2. Align the rotating cable saddle head 102 on the arc-shaped cable guide 1 with the rotating cable saddle seat 202 on the steel-concrete composite platform 2, and release the temporary fixation between the arc-shaped cable guide 1 and the elastic deformation sliding pair 3.

[0083] Step six: Pull the first cable strand through the cable guide arc plate 101 of the arc-shaped cable guide body 1 to complete the cable strand rotation.

[0084] Step seven: Pull the first cable strand, then sequentially pull in the slewing saddle, self-balancing saddle, inverted main cable saddle, self-balancing saddle, and slewing saddle to complete the cable strand rotation. Adaptive angle changes ensure that the force on the guide cable assembly remains on the same plane as the main cable.

[0085] Step 8: Repeat the construction process of Step 7 until all main cable strand traction and subsequent stiffening beam erection are completed.

Claims

1. A distributed force transmission rotary anchoring system for adaptive main cable inclination angle variation, characterized in that, Includes an arc-shaped cable guide body (1), which is set outside the steel-concrete composite platform (2); The arc-shaped cable guide body (1) includes a cable guide arc plate (101), a rotating cable saddle head (102) is provided at the middle position of the arc-shaped inner wall of the cable guide arc plate (101), and end elastic balance sliding pairs (103) are respectively provided at both ends of the arc-shaped inner wall of the cable guide arc plate (101). The steel-concrete composite platform (2) includes an arc-shaped steel shell (201), and a rotating cable saddle seat (202) is provided in the middle of the outer wall of the arc-shaped steel shell (201). The cable guide arc plate (101) is located on the outer side of the axial bottom of the arc-shaped steel shell (201), and the rotating cable saddle head (102) is installed inside the rotating cable saddle seat (202); the end elastic balance sliding pair (103) is in contact with the outer wall of the arc-shaped steel shell (201). The inner arc-shaped walls of the cable guide arc plates (101) on both sides of the rotating cable saddle head (102) and the outer walls of the arc-shaped steel shells (201) on both sides of the rotating cable saddle seat (202) are in contact with each other through elastic deformation sliding pairs (3); The elastic deformation sliding pair (3) includes an arc-shaped groove (301), the groove opening of the arc-shaped groove (301) is opened radially outward, and multiple detachable spring buffers (303) are installed in the bottom of the arc-shaped groove (301) radially outward. The spring buffers (303) are in contact with the cable guide arc plate (101); multiple hemispherical hinge sliding pairs (304) are installed on the side wall of the arc-shaped groove (301) radially inward; the hemispherical hinge sliding pairs (304) are in contact with the arc-shaped steel shell (201).

2. The adaptive main cable inclination angle distribution-type rotary anchoring system as described in claim 1, characterized in that, The spring buffer body (303) includes a buffer base (30301), which is installed at the bottom of the arc-shaped groove (301). One end of the buffer outer cylinder (30302) is vertically fixed on the buffer base (30301). The central axis of the buffer outer cylinder (30302) is radially arranged. One end of the buffer inner cylinder (30303) is fitted inside the other end of the buffer outer cylinder (30302). A buffer top plate (30304) is vertically fixed on the other end of the buffer inner cylinder (30303). The buffer top plate (30304) rests on the inner wall of the cable guide arc plate (101). A buffer spring (30305) is fitted outside the buffer outer cylinder (30302) and the buffer inner cylinder (30303). One end of the buffer spring (30305) rests on the buffer base (30301), and the other end of the buffer spring (30305) rests on the buffer top plate (30304).

3. The adaptive main cable inclination angle distribution-type rotary anchoring system as described in claim 2, characterized in that, The buffer base (30301) is provided with a locking hole (3030101) and a traction hole (3030102). The two ends of the locking hole (3030101) penetrate the side wall of the buffer base (30301), the outer end of the traction hole (3030102) penetrates the side wall of the buffer base (30301), and the inner end of the traction hole (3030102) is connected to the middle position of the locking hole (3030101) and is set vertically. A locking spring seat (3030103) is fixedly installed in the locking holes (3030101) on both sides of the traction hole (3030102). A locking guide rod (3030104) is installed on the locking spring seat (3030103). The inner end of the locking guide rod (3030104) passes through the locking spring seat (3030103) and can extend and retract relative to the locking spring seat (3030103). A locking pin head (3030105) is fixedly provided on the outer end of the locking guide rod (3030104). A locking spring (3030106) is fitted on the locking guide rod (3030104). One end of the locking spring (3030106) abuts against the locking spring seat (3030103), and the other end of the locking spring (3030106) abuts against the locking pin head (3030105). One end of a traction rope (3030107) is connected to the inner end of the locking guide rod (3030104). The other end of the traction rope (3030107) passes around the pulley (3030108) installed at the corner of the locking hole (3030101) and the traction hole (3030102) and enters the traction hole (3030102). The other end of the traction rope (3030107) extends out of the outer end of the traction hole (3030102) and is connected to the annular pull rod (3030109). Pulling the annular pull rod (3030109) can control the locking pin head (3030105) to extend or extend into the locking hole (3030101). The arc-shaped groove (301) has multiple spring buffer mounting slots (305) on its radially outer bottom. The grooves of the spring buffer mounting slots (305) are axially oriented, and two spring buffers (303) are installed in each spring buffer mounting slot (305). Two pairs of locking pin holes (306) are provided on the side wall of each spring buffer mounting slot (305). The locking pin head (3030105) can enter the locking pin hole (306) to lock the buffer base (30301) on the arc-shaped groove (301).

4. The adaptive main cable inclination angle change distributed force transmission rotary anchoring system as described in claim 1, characterized in that, The hemispherical hinge sliding pair (304) includes a hemispherical hinge (30401). The tail end of the hemispherical hinge (30401) is fixedly installed on the radially inner side wall of the arc-shaped groove (301). The ball end of the hemispherical hinge (30401) is installed in the ball head hinge seat (30402). The ball head end of the hemispherical hinge (30401) is locked in the ball head hinge seat (30402) by a locking ring (30403). The ball head hinge seat (30402) is fixed on the radially outer side of the second sliding support (30404). A second sliding roller group (30405) is provided on the radially inner side of the second sliding support (30404). The second sliding roller group (30405) is in contact with the arc-shaped steel shell (201).

5. The adaptive main cable inclination angle change distributed force transmission rotary anchoring system as described in claim 1, characterized in that, A rubber plate (302) is provided at the position where the arc-shaped groove (301) contacts the cable guide arc plate (101).

6. The adaptive main cable inclination angle change distributed force transmission rotary anchoring system as described in claim 1, characterized in that, The end elastic balance sliding pair (103) includes multiple radially arranged spring guide telescopic rods (10301). The large ends of the multiple spring guide telescopic rods (10301) are fixedly installed on the inner wall of the cable guide arc plate (101), and the small ends of the multiple spring guide telescopic rods (10301) are all installed on the radial outer side of the first sliding support (10302). Each spring guide telescopic rod (10301) is fitted with a return spring (10303). One end of the return spring (10303) abuts against the inner wall of the cable guide arc plate (101), and the other end of the return spring (10303) abuts against the outer side of the first sliding support (10302). The first sliding support (10302) is provided with a first sliding roller group (10304) on the radial inner side, and the first sliding roller group (10304) contacts the arc-shaped steel shell (201).

7. The adaptive main cable inclination angle distribution-type rotary anchoring system as described in claim 1, characterized in that, The steel-concrete composite platform (2) further includes multiple stiffening plates (203) axially arranged on the inner wall of the arc-shaped steel shell (201); the bottom surface of the rotating cable saddle (202) is provided with a bottom grid (204), which is located on the radial inner side of the arc-shaped steel shell (201); the arc-shaped steel shell (201) is filled with filling concrete (205); and the upper axial part of both ends of the outer wall of the arc-shaped steel shell (201) is also provided with a limiting plate (206).

8. The adaptive main cable inclination angle change distributed force transmission rotary anchoring system as described in claim 1, characterized in that, The cable guide arc plate (101) is provided with multiple pairs of main cable constraint blocks (104) on its arc-shaped outer wall.

9. A rotary anchoring method, characterized in that, The method employs a distributed force transmission rotary anchoring system with adaptive main cable inclination change as described in any one of claims 1 to 8.

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