Distributed force transfer type rotary anchoring system and method self-adaptive to dip angle change of main cable

Abstract

The invention provides a distributed force transfer type rotary anchoring system and method self-adaptive to main cable inclination angle change. The system comprises an arc-shaped cable guide body which is arranged outside a steel-concrete combined platform body; 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 in the rotating cable saddle seat. The end elastic balance sliding pair is in contact with the outer wall of the arc-shaped steel shell; the arc-shaped inner walls of the cable guide arc plates on the two sides of the rotating cable saddle head are in contact with the outer walls of the arc-shaped steel shells on the two sides of the rotating cable saddle base through elastic deformation sliding pairs respectively. The system is a suspension bridge steel-concrete combined distribution force transfer system with the self-adaptive angle change, the design service life of an anchorage can be prolonged, and the problems that a traditional reinforced concrete anchorage cannot adapt to the change of the angle of a main cable strand and stress at a cable saddle is excessively concentrated in the process from construction to bridge forming are solved; meanwhile, construction is simplified to a certain extent, and cost is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridges, relates to suspension bridges, and specifically relates to a distributed force transmission type rotary anchoring system and method capable of adaptively changing the inclination angle of a main cable. Background Art

[0002] During the construction of the anchor span of a revolving cable suspension bridge, from the first cable strand to the completed bridge line, the angle at which the cable strand enters the anchor saddle and saddle groove will inevitably change with the construction process. This change will cause the saddle and saddle groove partitions to be subjected to considerable extrusion pressure, resulting in changes in the partition spacing, making normal construction impossible and even posing considerable safety hazards.

[0003] The revolving cable suspension bridge adopts traditional concrete anchors. The cable saddles installed on the anchors cannot rotate. The entire construction process generates redundant force pointing outward on the cable saddle, which has a certain impact on the overall stability of the cable saddle.

[0004] In order to meet the needs of revolving cable suspension bridges, traditional anchorages generally set up several saddles to complete the main cable rotation. However, this method has an obvious drawback that there will be obvious local stress concentration in the anchorage concrete at the corresponding saddle. There will be both tension and pressure in the adjacent area, which may cause concrete cracking and affect the service life of the entire bridge.

[0005] In the traditional anchor pouring construction of a revolving cable suspension bridge, it takes a lot of manpower and material resources to remove the concrete after it has formed strength.

[0006] In summary, the stress-bearing effect of the traditional anchoring system is not ideal and cannot adapt to the mechanical characteristics of the anchor span of the revolving cable suspension bridge. Summary of the invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a distributed force transmission type rotary anchoring system and method that is adaptive to the change of the main cable inclination angle, so as to solve the technical problem that the adaptability of the rotary anchoring process and the mechanical characteristics of the anchor span of the rotary cable suspension bridge in the prior art needs to be further improved.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0009] A distributed force transmission type rotary anchoring system capable of self-adapting to the change of main cable inclination angle comprises an arc-shaped fairlead body which is arranged outside a steel-concrete composite platform body.

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

[0011] The steel-concrete combined platform body comprises an arc-shaped steel shell, and a rotating cable saddle is arranged in the middle of the outer wall of the arc-shaped steel shell.

[0012] The cable guide arc plate is located outside the axial bottom of the arc-shaped steel shell, the rotating cable saddle head is installed in 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 arc inner walls of the cable guide arc plates on both sides of the rotating cable saddle saddle head and the outer walls of the arc steel shells on both sides of the rotating cable saddle saddle seat are in contact with each other 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 body, the groove opening of the arc-shaped groove body is opened toward the radial outside, and a plurality of detachable spring buffer bodies are installed in the groove bottom on the radial outside of the arc-shaped groove body, and the spring buffer bodies are in contact with the cable guide arc plate; a plurality of hemispherical joint sliding pairs are installed on the side wall on the radial inside of the arc-shaped groove body; the hemispherical joint sliding pair is in contact with the arc-shaped steel shell.

[0016] Preferably, the spring buffer body includes a buffer base, which is installed on the bottom of the arc-shaped groove body, one end of the buffer outer tube is vertically fixed on the buffer base, the central axis of the buffer outer tube is radially arranged, one end of the buffer inner tube is sleeved on the other end of the buffer outer tube, and a buffer top plate is vertically fixed on the other end of the buffer inner tube, and the buffer top plate is pressed against the inner wall of the cable guide arc plate; a buffer spring is sleeved outside the buffer outer tube and the buffer inner tube, one end of the buffer spring is pressed against the buffer base, and the other end of the buffer spring is pressed against the buffer top plate.

[0017] Furthermore, a locking hole and a traction hole are provided in the buffer base, both ends of the locking hole pass through the side wall of the buffer base, the outer end of the traction hole passes through 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 vertically arranged.

[0018] A locking spring seat is fixedly installed in the locking holes on both sides of the traction hole, and 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, and the outer end of the locking guide rod is fixedly provided with a locking pin head; a locking spring is sleeved on the locking guide rod, one end of the locking spring is against the locking spring seat, and the other end of the locking spring is against the locking pin head.

[0019] One end of a traction rope is connected to the inner end of the locking guide rod, and the other end of the traction rope enters the traction hole after passing through a pulley installed at a corner of the locking hole and the traction hole. The other end of the traction rope extends out of the outer end of the traction hole and is connected to an annular pull rod; pulling the annular pull rod can control the locking pin head to extend out or into the locking hole.

[0020] A plurality of spring buffer body installation grooves are opened in the groove bottom on the radial outer side of the arc-shaped groove body, the groove direction of the spring buffer body installation grooves is axial, and two spring buffer bodies are installed in each spring buffer body installation groove; two pairs of locking pin holes are opened on the side wall of each spring buffer body installation groove, and the locking pin head can enter the locking pin hole to realize the locking of the buffer base on the arc-shaped groove body.

[0021] Specifically, the hemispherical joint sliding pair includes a hemispherical joint, the tail end of the hemispherical joint is fixedly mounted on the radial inner side wall of the arc-shaped groove body, the ball head end of the hemispherical joint is installed in the ball head hinge seat, the ball head end of the hemispherical joint is locked in the ball head hinge seat by a locking ring, the ball head hinge seat is fixed on the radial outer side of the second sliding support, and a second sliding roller group is arranged on the radial inner side of the second sliding support, and the second sliding roller group is in contact with the arc-shaped steel shell.

[0022] Preferably, a rubber plate is provided in the groove of the arc-shaped groove body at a position in contact with the cable guide arc plate.

[0023] Specifically, the end elastic balanced sliding pair includes a plurality of radially arranged spring-guided telescopic rods, the large ends of the plurality of spring-guided telescopic rods are fixedly mounted on the inner wall of the cable guide arc plate, and the small ends of the plurality of spring-guided telescopic rods are all mounted on the radial outer side of the first sliding support; a return spring is mounted on each spring-guided telescopic rod, one end of the return spring is pressed against the inner wall of the cable guide arc plate, and the other end of the return spring is pressed against the outer side of the first sliding support; a first sliding roller group is arranged on the radial inner side of the first sliding support, and the first sliding roller group is in contact with the arc-shaped steel shell.

[0024] Specifically, the steel-concrete composite platform also includes a plurality of stiffening plates axially arranged on the inner wall of the arc-shaped steel shell; a bottom surface grid is arranged on the bottom surface of the interior of the rotating saddle, and the bottom surface 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 a limit plate is also arranged on the axial upper part of the circumferential ends of the outer wall of the arc-shaped steel shell.

[0025] Preferably, a plurality of pairs of main cable restraining blocks are provided on the arc-shaped outer wall of the cable guide arc plate.

[0026] The present invention also protects a rotary anchoring method, which adopts the distributed force transmission type rotary anchoring system that is adaptive to the change of the main cable inclination angle 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 a steel-concrete composite distributed force transmission system for suspension bridges with adaptive angle change, which can extend the design service life of anchors, solve the problems of traditional reinforced concrete anchors being unable to adapt to changes in the angle of the main cable strands during the construction and completion of the bridge, and excessive stress concentration at the saddle, and at the same time simplify the construction to a certain extent and save costs.

[0029] (II)) The system of the present invention can adaptively change its own angle while ensuring that the IP point does not change during the process from construction to completion of the bridge. This solves the problem that the saddle at the anchorage of the rotary cable has a certain angle with the saddle in the early stage of erecting the main cable, causing the saddle groove partition of the saddle to undergo a large deformation under the influence of the upward pull force, and the saddle of the traditional concrete anchorage cannot adaptively change its own angle as the construction process progresses, generating redundant force on the saddle pointing out of the surface during the entire process.

[0030] (III) The system of the present invention can evenly 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 system 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 preparation of the casting formwork and the removal operation during the construction process, saving time and manpower costs.

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

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

[0034] (VII) The elastic deformation sliding pair of the system of the present invention and the steel-concrete composite platform body are used to achieve that the arc-shaped cable guide group and the steel-concrete composite platform body maintain contact and do not collide during the change of the main cable angle through the hemispherical joint sliding pair and the spring buffer body.

[0035] (VIII) When installing the sliding roller assembly of the hemispherical joint sliding pair of the system of the present invention, its displacement path is as vertically upward as possible to match the actual displacement path. Even if there is a certain deviation, it can complete the adjustment itself under the action of the gradually increasing load during the construction process after the installation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0038] Figure 3 It is a schematic diagram of the overall structure of the arc-shaped fairlead.

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

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

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

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

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

[0044] Fig. 9 It is a schematic diagram of the internal structure of the buffer base.

[0045] Fig.10 It is a structural schematic diagram of the spring buffer body installation groove.

[0046] Fig.11 It is a schematic diagram of the decomposed structure of the hemispherical joint sliding pair.

[0047] The meanings of the various numbers in the figure are: 1-arc-shaped fairlead body, 2-steel-concrete composite platform body, 3-elastic deformation sliding pair.

[0048] 101-cable guide arc plate, 102-rotating saddle head, 103-end elastic balance sliding pair, 104-main cable restraint block.

[0049] 10301-spring guided telescopic rod, 10302-first sliding support, 10303-reset spring, 10304-first sliding roller group.

[0050] 201-arc steel shell, 202-rotating cable saddle, 203-stiffening plate, 204-bottom grille, 205-filling concrete, 206-limiting plate.

[0051] 301-arc groove body, 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 head, 3030106-locking spring, 3030107-traction rope, 3030108-pulley, 3030109-annular pull rod.

[0054] 30401-hemispherical hinge, 30402-ball head hinge seat, 30403-locking ring, 30404-second sliding support, 30405-second sliding roller set.

[0055] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

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

[0057] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0058] Embodiment 1:

[0059] This embodiment provides a distributed force transmission type rotary anchoring system that is adaptive to the change of the main cable inclination angle. Figure 1 and Figure 2 As shown, it includes an arc-shaped fairlead 1, which is arranged outside the steel-concrete combined platform body 2.

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

[0061] like Figure 4 As shown, the steel-concrete composite platform body 2 includes an arc-shaped steel shell 201 , and a rotating saddle 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 arc plate 101 is located outside the axial bottom of the arc-shaped steel shell 201, and the rotating cable saddle head 102 is installed in the rotating cable saddle seat 202; the end elastic balance sliding pair 103 contacts the outer wall of the arc-shaped steel shell 201.

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

[0064] As a specific solution of this embodiment, Figure 6 As shown, the end elastic balanced sliding pair 103 includes a plurality of radially arranged spring-guided telescopic rods 10301, the large ends of the plurality of spring-guided telescopic rods 10301 are fixedly mounted on the inner wall of the cable guide arc plate 101, and the small ends of the plurality of spring-guided telescopic rods 10301 are all mounted on the radial outer side of the first sliding support 10302; each spring-guided telescopic rod 10301 is provided with a reset spring 10303, one end of the reset spring 10303 is pressed against the inner wall of the cable guide arc plate 101, and the other end of the reset spring 10303 is pressed against the outer side of the first sliding support 10302; a first sliding roller group 10304 is arranged on the radial inner side of the first sliding support 10302, and the first sliding roller group 10304 is in contact with the arc-shaped steel shell 201.

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

[0066] As a specific solution of this embodiment, Figure 4 and Figure 5 As shown, the steel-concrete composite platform body 2 also includes a plurality of stiffening plates 203 axially arranged on the inner wall of the arc-shaped steel shell 201; a bottom surface grid 204 is arranged on the bottom surface inside the rotating saddle 202, and the bottom surface grid 204 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 a limit plate 206 is also arranged on the axial upper part of the outer wall of the arc-shaped steel shell 201 at both ends in the circumferential direction.

[0067] As a specific solution of this embodiment, Figure 7 As shown, the elastic deformation sliding pair 3 includes an arc-shaped groove body 301, the groove opening of the arc-shaped groove body 301 is opened toward the radial outside, and a plurality of detachable spring buffer bodies 303 are installed in the groove bottom on the radial outside of the arc-shaped groove body 301, and the spring buffer bodies 303 are in contact with the cable guide arc plate 101; a plurality of hemispherical joint sliding pairs 304 are installed on the radial inner side wall of the arc-shaped groove body 301; the hemispherical joint sliding pairs 304 are in contact with the arc-shaped steel shell 201.

[0068] Further preferably, Figure 8As shown, the spring buffer body 303 includes a buffer base 30301, which is installed at the bottom of the arc-shaped groove body 301, one end of a 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 sleeved on the other end of the buffer outer cylinder 30302, and a buffer top plate 30304 is vertically fixed on the other end of the buffer inner cylinder 30303, and the buffer top plate 30304 is pressed against the inner wall of the cable guide arc plate 101; a buffer spring 30305 is sleeved on the buffer outer cylinder 30302 and the buffer inner cylinder 30303, one end of the buffer spring 30305 is pressed against the buffer base 30301, and the other end of the buffer spring 30305 is pressed against the buffer top plate 30304.

[0069] More preferably, Fig. 9 As shown, a locking hole 3030101 and a traction hole 3030102 are provided in the buffer base 30301, both 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 vertically arranged.

[0070] like Fig. 9 As shown, a locking spring seat 3030103 is fixedly installed in the locking holes 3030101 on both sides of the traction hole 3030102, and 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 telescopically move relative to the locking spring seat 3030103. The outer end of the locking guide rod 3030104 is fixedly provided with a locking pin head 3030105; a locking spring 3030106 is sleeved on the locking guide rod 3030104, one end of the locking spring 3030106 is pressed against the locking spring seat 3030103, and the other end of the locking spring 3030106 is pressed against the locking pin head 3030105;

[0071] like Fig. 9 As shown, one end of a traction rope 3030107 is connected to the inner end of the locking guide rod 3030104, and the other end of the traction rope 3030107 passes through a pulley 3030108 installed at the corner of the locking hole 3030101 and the traction hole 3030102 and enters the traction hole 3030102, and 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 out or extend into the locking hole 3030101;

[0072] like Fig.10 As shown, a plurality of spring buffer body installation grooves 305 are opened in the groove bottom on the radial outer side of the arc-shaped groove body 301, and the groove direction of the spring buffer body installation groove 305 is axial. Two spring buffer bodies 303 are installed in each spring buffer body installation groove 305; two pairs of locking pin holes 306 are opened on the side wall of each spring buffer body installation groove 305, and the locking pin head 3030105 can enter the locking pin hole 306 to realize the locking of the buffer base 30301 on the arc-shaped groove body 301.

[0073] Further preferably, Fig.11 As shown, the hemispherical joint sliding pair 304 includes a hemispherical joint 30401, the tail end of the hemispherical joint 30401 is fixedly mounted on the radial inner side wall of the arc-shaped groove body 301, the ball head end of the hemispherical joint 30401 is mounted in the ball head hinge seat 30402, the ball head end of the hemispherical joint 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 radial outer side of the second sliding support 30404, and a second sliding roller group 30405 is arranged on the radial inner side of the second sliding support 30404, and the second sliding roller group 30405 is in contact with the arc-shaped steel shell 201.

[0074] Further preferably, Fig.10 As shown, a rubber plate 302 is provided in the groove of the arc-shaped groove body 301 at a position in contact with the arc guide plate 101 .

[0075] Embodiment 2:

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

[0077] The method proceeds as follows:

[0078] Step 1: Pour concrete at the bottom of the distributed force transmission rotary anchoring system that adapts to the change of the main cable inclination angle to form a plane for subsequent construction, erect the rotating cable saddle 202, cast the steel-concrete composite platform 2 in sections, and connect the sections of the arc-shaped steel shell 201 by welding until the capping work is completed.

[0079] Step 2: Install the ball head hinge seat 30402 to the hemispherical hinge 30401 on the arc-shaped groove body 301, install the locking ring 30403 to prevent the two from detaching during use, and install the second sliding roller group 30405 under the second sliding support 30404.

[0080] Step 3: Install the spring buffer body 303, pull the annular pull rod 3030109 on the buffer base 30301, so that the locking pin head 3030105 retracts under the traction of the traction rope 3030107, and push the buffer base 30301 along the spring buffer body installation slot 305. After it is fully pushed in, release the annular pull rod 3030109, and the locking pin head 3030105 automatically rebounds and inserts into the locking pin holes 306 on both sides of the spring buffer body installation slot 305 to complete the locking. If the spring buffer body 303 needs to be replaced later, a hydraulic jack is used to temporarily replace the position of the spring buffer body 303, compress the spring buffer body 303, pull the annular pull rod 3030109 to withdraw it, install the new spring buffer body 303 according to the above installation method, and withdraw the hydraulic jack.

[0081] Step 4: insert the rubber sheet 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 deformation sliding pair 3 from having excessive displacement, which is not conducive to subsequent installation.

[0082] Step five, install the arc-shaped cable guide pair and the steel-concrete composite platform 2, align the rotating cable saddle head 102 on the arc-shaped cable guide body 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 body 1 and the elastic deformation sliding pair 3.

[0083] Step six, pulling the first cable strand through the arc guide plate 101 of the arc guide body 1 to complete the rotation of the cable strand.

[0084] Step 7: Pull the first cable strand, and pull it into the rotating saddle, self-balancing saddle, inverted main saddle, self-balancing saddle and rotating saddle in sequence to complete the cable strand rotation. The adaptive angle change ensures that the force of the cable guide group is always in the same plane as the main cable.

[0085] Step 8: Repeat the construction process of step 7 until all main cable strands are pulled and subsequent stiffening beam erection work is completed.

Claims

1. A distributed force transmission type rotary anchoring system that is adaptive to the change of the main cable inclination angle, characterized in that: It comprises an arc-shaped fairlead (1), which is arranged outside a steel-concrete composite platform (2); The arc-shaped cable guide body (1) comprises an arc-shaped cable guide plate (101), a rotating cable saddle head (102) is arranged in the middle of the arc-shaped inner wall of the cable guide arc plate (101), and end elastic balancing sliding pairs (103) are respectively arranged at both ends of the arc-shaped inner wall of the cable guide arc plate (101); The steel-concrete combined platform (2) comprises an arc-shaped steel shell (201), and a rotating saddle (202) is arranged in the middle of the outer wall of the arc-shaped steel shell (201); The cable guide arc plate (101) is located outside the axial bottom of the arc-shaped steel shell (201), and the rotating cable saddle head (102) is installed in 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 arc-shaped inner 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).

2. The distributed force transmission type rotary anchoring system with adaptive main cable inclination angle change according to claim 1 is characterized in that: The elastic deformation sliding pair (3) comprises an arc-shaped groove body (301), the groove opening of the arc-shaped groove body (301) is opened toward the radial outside, a plurality of detachable spring buffer bodies (303) are installed in the groove bottom on the radial outside of the arc-shaped groove body (301), and the spring buffer bodies (303) are in contact with the cable guide arc plate (101); a plurality of hemispherical joint sliding pairs (304) are installed on the radial inside side wall of the arc-shaped groove body (301); the hemispherical joint sliding pairs (304) are in contact with the arc-shaped steel shell (201).

3. The distributed force transmission type rotary anchoring system with adaptive main cable inclination angle change according to claim 2 is characterized in that: The spring buffer body (303) comprises a buffer base (30301), the buffer base (30301) is mounted on the bottom of the arc-shaped groove body (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, and one end of the buffer inner cylinder (30303) is sheathed in the other end of the buffer outer cylinder (30302), and the buffer inner cylinder (303 03), a buffer top plate (30304) is vertically fixed on the other end, and the buffer top plate (30304) is pressed against the inner wall of the cable guide arc plate (101); a buffer outer tube (30302) and a buffer inner tube (30303) are sheathed with a buffer spring (30305), one end of the buffer spring (30305) is pressed against the buffer base (30301), and the other end of the buffer spring (30305) is pressed against the buffer top plate (30304).

4. The distributed force transmission type rotary anchoring system with adaptive main cable inclination angle change according to claim 3 is characterized in that: The buffer base (30301) is provided with a locking hole (3030101) and a traction hole (3030102), both 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 vertically arranged; A locking spring seat (3030103) is fixedly installed in the locking holes (3030101) on both sides of the traction hole (3030102), and 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 move telescopically relative to the locking spring seat (3030103). The outer end of the locking guide rod (3030104) is fixedly provided with a locking pin head (3030105); a locking spring (3030106) is sleeved on the locking guide rod (3030104), one end of the locking spring (3030106) is pressed against the locking spring seat (3030103), and the other end of the locking spring (3030106) is pressed 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), and the other end of the traction rope (3030107) passes around a pulley (3030108) installed at the corner of the locking hole (3030101) and the traction hole (3030102) and enters the traction hole (3030102), and 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 out or extend into the locking hole (3030101); A plurality of spring buffer body installation grooves (305) are provided in the groove bottom on the radial outer side of the arc-shaped groove body (301), and the groove direction of the spring buffer body installation groove (305) is axial. Two spring buffer bodies (303) are installed in each spring buffer body installation groove (305); two pairs of locking pin holes (306) are provided on the side wall of each spring buffer body installation groove (305), and the locking pin head (3030105) can enter the locking pin hole (306) to realize the locking of the buffer base (30301) on the arc-shaped groove body (301).

5. The distributed force transmission type rotary anchoring system with adaptive main cable inclination angle change according to claim 2, characterized in that: The hemispherical joint sliding pair (304) includes a hemispherical joint (30401), the tail end of the hemispherical joint (30401) is fixedly mounted on the radial inner side wall of the arc-shaped groove body (301), the ball head end of the hemispherical joint (30401) is mounted in the ball head hinge seat (30402), the ball head end of the hemispherical joint (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 radial outer side of the second sliding support (30404), and a second sliding roller group (30405) is arranged on the radial inner side of the second sliding support (30404), and the second sliding roller group (30405) is in contact with the arc-shaped steel shell (201).

6. The distributed force transmission type rotary anchoring system capable of adapting to the change of the main cable inclination angle according to claim 2, characterized in that: A rubber plate (302) is provided in the groove of the arc-shaped groove body (301) at a position in contact with the cable guide arc plate (101).

7. The distributed force transmission type rotary anchoring system with adaptive main cable inclination angle change according to claim 1, characterized in that: The end elastic balanced sliding pair (103) comprises a plurality of radially arranged spring-guided telescopic rods (10301), the large ends of the plurality of spring-guided telescopic rods (10301) are fixedly mounted on the inner wall of the cable guide arc plate (101), and the small ends of the plurality of spring-guided telescopic rods (10301) are mounted on the radial outer side of the first sliding support (10302); a return spring (10303) is sleeved on each spring-guided telescopic rod (10301), one end of the return spring (10303) is pressed against the inner wall of the cable guide arc plate (101), and the other end of the return spring (10303) is pressed against the outer side of the first sliding support (10302); a first sliding roller group (10304) is arranged on the radial inner side of the first sliding support (10302), and the first sliding roller group (10304) is in contact with the arc-shaped steel shell (201).

8. The distributed force transmission type rotary anchoring system capable of adapting to the change of main cable inclination angle according to claim 1, characterized in that: The steel-concrete composite platform (2) further comprises a plurality of stiffening plates (203) axially arranged on the inner wall of the arc-shaped steel shell (201); a bottom surface grille (204) is arranged on the bottom surface inside the rotating cable saddle (202), and the bottom surface grille (204) is located radially inside the arc-shaped steel shell (201); the arc-shaped steel shell (201) is filled with filling concrete (205); and limit plates (206) are also arranged on the axial upper part of the circumferential ends of the outer wall of the arc-shaped steel shell (201).

9. The distributed force transmission type rotary anchoring system with adaptive main cable inclination angle change according to claim 1, characterized in that: A plurality of pairs of main cable restraining blocks (104) are arranged on the arc-shaped outer wall of the cable guide arc plate (101).

10. A rotary anchoring method, characterized in that: The method adopts the distributed force transmission type rotary anchoring system capable of adaptively changing the inclination angle of the main cable as claimed in any one of claims 1 to 9.

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