A stress-controlled cable-slinging anchoring system
By introducing cable adjustment and diversion mechanisms into the cable slewing anchorage system of a suspension bridge, the problem of uneven stress caused by construction deviations in traditional cable saddle systems has been solved, achieving uniform stress distribution and stability of the anchorage system, thus improving the safety of the suspension bridge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD
- Filing Date
- 2024-01-29
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional cable saddle systems are prone to uneven stress distribution due to construction deviations during the rotation of the main cable of a suspension bridge. This may lead to local stress concentration and instability of the anchorage system, posing a safety hazard, especially in mountainous environments with harsh geological conditions.
The system employs a stress-controlled cable slewing anchorage system, which includes a main cable saddle, a slewing cable saddle, a cable adjustment mechanism, and an anchorage structure. The cable height is adjusted by the clamping part and the height adjustment mechanism of the cable adjustment mechanism. Combined with the linkage mechanism and the angle adjustment mechanism, the system ensures that the cable rotates smoothly along the designed line, the diversion cable saddle disperses stress, and the buffer mechanism reduces local stress concentration.
This effectively avoids stress concentration caused by construction errors, ensures consistent stress distribution in the anchorage system, improves the safety and stability of the suspension bridge, and reduces the design difficulty of the anchorage system.
Smart Images
Figure CN117888446B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of suspension bridge technology, and in particular to a stress-controlled cable slewing anchorage system. Background Technology
[0002] To achieve 180° rotation of the main cable of a slewing cable suspension bridge, a suitable cable saddle system is required to meet the needs of internal force transmission between the main cable and the anchorage and spatial displacement of the main cable. Traditional cable saddle systems consist of two symmetrically positioned slewing saddles on either side of the cable slewing channel and a main cable saddle positioned at the top of the cable slewing channel. The slewing saddles are specifically fixed to the sides of the anchorage structure inside the cable slewing channel, while the main cable saddle is specifically fixed to the side of the top of the anchorage structure inside the cable slewing channel. Both the slewing saddles and the main cable saddle are horizontally positioned, using slots on the saddle body to achieve horizontal rotation and support for the main cable. However, while traditional horizontal slewing cable saddle systems solve the problem of main cable rotation, construction deviations can lead to discrepancies between the actual and designed alignments, affecting stress distribution and even causing localized stress concentrations. This is unsuitable for mountainous terrain with harsh geological conditions, as it can easily cause anchorage system instability and subsequent safety accidents.
[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention
[0004] The purpose of this application is to provide a stress-controlled cable slewing anchor system to solve or alleviate the problems existing in the prior art.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A stress-controlled cable slewing anchor system, the anchor system comprising a main cable saddle, a slewing cable saddle, a cable adjustment mechanism, and an anchor structure;
[0007] The anchorage structure is provided with a cable rotation channel; the cable saddles are symmetrically distributed on both sides of the cable rotation channel, and the main cable saddle is set at the central axis at the top of the cable rotation channel;
[0008] The cable adjustment mechanisms are symmetrically distributed on both sides of the cable rotation channel. The cable passes through the cable adjustment mechanism, the cable saddle, and the main cable saddle at the top of the cable rotation channel on the same side in sequence, and then passes through the cable saddle and the cable adjustment mechanism on the other side in sequence to complete the rotation.
[0009] The cable adjustment mechanism is fixedly installed in the cable rotation channel. The cable adjustment mechanism includes a clamping part and a height adjustment mechanism. The clamping part is used to fix the cable, and the height adjustment mechanism is used to adjust the setting height of the clamping part.
[0010] In the stress-controlled cable slewing anchorage system described above, preferably, the cable adjustment mechanism includes a linkage mechanism, and the clamping part includes a first clamp and a second clamp. The linkage mechanism is used to simultaneously drive the first clamp and the second clamp to slide towards the cable.
[0011] In the stress-controlled cable slewing anchorage system described above, preferably, the first clamp and the second clamp are symmetrically distributed on both sides of the cable in the horizontal direction;
[0012] The linkage mechanism includes a mounting plate and a crank-slider structure, a pull rod, and a slide rail disposed at the ends of the first clamp and the second clamp away from the cable.
[0013] Along the direction perpendicular to the cable rotation, the first clamp, the second clamp, the crank-slider structure, and the slide rail are arranged on one side of the mounting plate;
[0014] The slide rail is fixedly connected to the mounting plate, and the crank-slider structure is slidably disposed in the slide rail; the slider end of the crank-slider structure is connected to the first clamp and the second clamp; the pull rod is rotatably connected to the slide rail, and the crank end of the crank-slider structure is fixedly connected to the rotation center axis of the pull rod; the pull rod is used to drive the crank-slider structure to slide horizontally along the slide rail;
[0015] The crank ends of the two crank-slider structures are bent in opposite directions, and the two tie rods are connected by a connecting frame located on the other side of the mounting plate.
[0016] In the stress-controlled cable slewing anchor system described above, preferably, the slider ends of the two crank-slider structures are axially telescopically connected to the first clamp and the second clamp, respectively.
[0017] In the stress-controlled cable slewing anchor system described above, preferably, the cable adjustment mechanism includes a support plate, the clamping part and the linkage mechanism are disposed on the upper side of the support plate, and the height adjustment mechanism is disposed on the lower side of the support plate.
[0018] In the stress-controlled cable slewing anchor system described above, preferably, an angle adjustment mechanism is fixedly installed on the lower side of the support plate to adjust the horizontal angle of the upper structure of the support plate;
[0019] The height adjustment mechanism is in contact with the lower side of the support plate.
[0020] In any of the stress-controlled cable slewing anchorage systems described above, preferably, the cable saddle is fixedly connected to the anchorage structure via a grid pre-embedded in the lower anchorage structure of the cable slewing channel and a grid in the inner anchorage structure of the cable slewing channel.
[0021] The saddle body of the cable saddle is slidably connected to the two grids along the cable rotation direction.
[0022] The stress-controlled cable slewing anchor system described above preferably includes a diversion saddle.
[0023] The diversion saddle is fixedly installed at the top of the cable rotation channel and symmetrically distributed along the main saddle. The main saddle includes a first main saddle and a second main saddle. The slots of the first main saddle and the slots of the second main saddle are arranged opposite to each other along the central axis of the top of the cable rotation channel. The first main saddle and the second main saddle are axially connected by a force transmission mechanism.
[0024] The force transmission mechanism is fixedly installed in the cable rotation channel; the diversion saddle includes a saddle body;
[0025] The cable includes a first cable and a second cable. The first main cable saddle is used for the inverted U-shaped rotation of the first cable at the top of the cable slewing channel, and the second main cable saddle and the branch cable saddle are used for the M-shaped rotation of the second cable at the top of the cable slewing channel.
[0026] In the stress-controlled cable slewing anchor system described above, preferably, the diversion saddle is fixedly connected to the anchor structure via a grid pre-embedded in the lower anchor structure of the cable slewing channel and a grid in the inner anchor structure of the cable slewing channel.
[0027] Multiple buffer mechanisms are provided between the saddle body of the diversion saddle and the grid of the anchor structure embedded in the inner side of the cable rotation channel. The saddle body of the diversion saddle is flexibly connected to the grid of the anchor structure embedded in the inner side of the cable rotation channel through multiple buffer mechanisms.
[0028] In the stress-controlled cable slewing anchor system described above, preferably, the saddle body of the diversion saddle is connected to the grid limiting sliding connection of the anchor structure pre-embedded in the lower side of the cable slewing channel.
[0029] Compared with the closest prior art, the technical solution of this application has the following beneficial effects:
[0030] The cable is clamped and fixed by the clamping part of the cable adjustment mechanism, and the setting height of the clamping part is adjusted by the height adjustment mechanism. This allows the cable to enter or exit the cable saddle horizontally at the designed height, improving the smoothness of the cable's alignment when entering and exiting the anchoring system. This avoids construction errors that cause the actual alignment height to deviate from the design height or even cause excessive bending, which could affect stress distribution or even cause stress concentration at the bend. This ensures that the stress distribution of the anchoring system is consistent with the design and achieves stress control. Attached Figure Description
[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein:
[0032] Figure 1 This is a rear-view perspective view of a cable adjustment mechanism provided according to some embodiments of this application;
[0033] Figure 2 This is a front perspective perspective view of a cable adjustment mechanism according to some embodiments of this application;
[0034] Figure 3 This is a schematic diagram of the plan layout of a stress-controlled cable slewing anchorage system according to some embodiments of this application;
[0035] Figure 4 This is a schematic diagram of a three-dimensional structure of a main cable saddle according to some embodiments of this application;
[0036] Figure 5 This is a schematic diagram of a three-dimensional structure of a cable saddle according to some embodiments of this application;
[0037] Figure 6 This is a schematic diagram of a three-dimensional structure of a diversion saddle according to some embodiments of this application.
[0038] Explanation of reference numerals in the attached figures:
[0039] 1. Cable slewing channel; 2. Anchorage structure; 3. Cable adjustment mechanism; 4. First cable; 5. Second cable; 6. First main cable saddle; 7. Second main cable saddle; 8. Force transmission mechanism; 9. Diverter cable saddle; 10. Rotating cable saddle; 11. Clamping part; 12. Crank-slider structure; 13. Buffer mechanism; 14. Cable saddle body; 15. Grid; 16. Groove; 17. Mounting plate; 18. Support plate; 19. Slide rail; 20. Tie rod; 21. Connecting frame; 22. Angle adjustment mechanism; 23. Height adjustment mechanism; 24. Rotating shaft; 25. Friction pair; 26. Limiting block. Detailed Implementation
[0040] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.
[0041] In the following description, the terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.
[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to limit this disclosure.
[0043] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; direct connections or indirect connections through intermediate components; wired connections, radio connections, or wireless communication signal connections. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0044] The cable-stayed horizontal slewing anchorage system is set at the end of the suspension bridge along the longitudinal direction. For clarity, it is defined that the farthest point of the cable-stayed channel 1 from the suspension bridge along the longitudinal direction is the top of the cable-stayed channel 1, and the farthest point of the anchorage structure 2 from the suspension bridge along the longitudinal direction is the top of the anchorage structure 2.
[0045] The following will be combined with the appendix Figure 1-6 A stress-controlled cable slewing anchorage system of this application will be further described in detail.
[0046] A stress-controlled cable slewing anchor system, the anchor system including a main cable saddle, a slewing cable saddle 10, a cable adjustment mechanism 3, and an anchor structure 2;
[0047] The anchorage structure 2 is provided with a cable rotation channel 1; the cable saddles 10 are symmetrically distributed on both sides of the cable rotation channel 1, and the main cable saddle is set at the central axis at the top of the cable rotation channel 1.
[0048] The cable adjustment mechanism 3 is symmetrically distributed on both sides of the cable rotation channel 1. The cable passes through the cable adjustment mechanism 3, the cable saddle 10 and the main cable saddle at the top of the cable rotation channel 1 on the same side in sequence, and then passes through the cable saddle 10 and the cable adjustment mechanism 3 on the other side in sequence to complete the rotation.
[0049] The cable adjustment mechanism 3 is fixedly installed in the cable rotation channel 1. The cable adjustment mechanism 3 includes a clamping part 11 and a height adjustment mechanism 23. The clamping part 11 is used to fix the cable, and the height adjustment mechanism 23 is used to adjust the setting height of the clamping part 11.
[0050] In a specific embodiment of this application, both the saddle 10 and the main saddle are horizontally positioned in the cable rotation channel 1, and both the saddle 10 and the main saddle include a saddle body 14 and a grid 15. One end of the saddle body 14 has a horizontally opening 16, with the opening 16 of the saddle 10 and the main saddle facing outwards from the cable rotation channel 1. The saddle 10 is fixedly mounted on the anchor structure 2 inside the cable rotation channel 1. After the cable passes sequentially through the cable adjustment mechanism 3, the saddle 10, and the main saddle at the top of the cable rotation channel 1 on the same side, it then sequentially passes through the saddle 10 and the cable adjustment mechanism 3 on the other side to complete an inverted U-shaped rotation. Specifically, along the cable rotation direction, the first cable adjustment mechanism 3 is fixedly mounted on the upstream side of the saddle 10 on the same side, and the other cable adjustment mechanism 3 is fixedly mounted on the downstream side of the saddle 10 on the same side.
[0051] In actual use, the cable is first clamped and fixed by the clamping part 11 of the cable adjustment mechanism 3, and then the height of the clamping part 11 is adjusted by the height adjustment mechanism 23. This allows the cable to enter or exit the cable saddle 10 horizontally at the designed height, improving the smoothness of the cable's alignment when entering and exiting the anchoring system. This avoids construction errors that could cause the actual alignment height to deviate from the design height or even result in excessive bending, which could affect stress distribution or even cause stress concentration at the bend. This ensures that the stress distribution of the anchoring system is consistent with the design and achieves stress control.
[0052] The cable adjustment mechanism 3 includes a linkage mechanism, and the clamping part 11 includes a first clamp and a second clamp. The linkage mechanism is used to simultaneously drive the first clamp and the second clamp to slide towards the cable.
[0053] By setting a linkage mechanism to simultaneously drive the first clamp and the second clamp to slide closer to the cable, the clamping part 11 has a self-centering function for fixing the cable. That is, due to the simultaneous drive of the linkage mechanism, the first clamp and the second clamp always slide the same distance when clamping the cable, thereby keeping the cable fixed in a horizontal position at the cable adjustment mechanism 3. This avoids changes in the horizontal position of the cable caused by different displacements of the first clamp and the second clamp during multiple clamping adjustments, which would affect the cable profile.
[0054] The first clamp and the second clamp are symmetrically distributed on both sides of the cable in the horizontal direction;
[0055] The linkage mechanism includes a mounting plate 17 and a crank-slider structure 12, a pull rod 20, and a slide rail 19 disposed at the ends of the first clamp and the second clamp away from the cable.
[0056] Along the direction perpendicular to the cable rotation, the first clamp, the second clamp, the crank-slider structure 12, and the slide rail 19 are arranged on one side of the mounting plate 17;
[0057] The slide rail 19 is fixedly connected to the mounting plate 17, and the crank-slider structure 12 is slidably disposed in the slide rail 19; the slider end of the crank-slider structure 12 is connected to the first clamp and the second clamp; the pull rod 20 is rotatably connected to the slide rail 19, and the crank end of the crank-slider structure 12 is fixedly connected to the rotation center axis of the pull rod 20; the pull rod 20 is used to drive the crank-slider structure 12 to slide horizontally along the slide rail 19.
[0058] The crank ends of the two crank-slider structures 12 are bent in opposite directions, and the two pull rods 20 are connected by a connecting frame 21 located on the other side of the mounting plate 17.
[0059] In a specific embodiment of this application, the crank-slider structure 12 includes a first crank-slider structure 12 fixedly connected to the end of the first clamp away from the cable, and a second crank-slider structure 12 fixedly connected to the end of the second clamp away from the cable. The slide rail 19 includes a first slide rail 19 slidably connected to the first crank-slider structure 12, and a second slide rail 19 slidably connected to the second crank-slider structure 12. The pull rod 20 includes a first pull rod 20 rotatably connected to the first slide rail 19, and a second pull rod 20 rotatably connected to the second slide rail 19. Both the first and second pull rods are rotatably connected to a connecting frame 21 disposed on the other side of the mounting plate 17. The mounting plate 17 is vertically disposed perpendicular to the direction of cable rotation, and the slide rail 19 is horizontally fixed to one side of the mounting plate 17 by bolts. The first crank-slider structure 12 is slidably disposed in the first slide rail 19 in the horizontal direction. The slider end of the first crank-slider structure 12 is connected to the first clamp, and the crank end is fixedly connected to the first pull rod 20. The first pull rod 20 is rotatably connected to the first slide rail 19 in the horizontal direction through the rotating shaft 24 disposed in the vertical direction on the first slide rail 19. The crank end of the first crank-slider structure 12 is fixedly connected to the intersection of the first pull rod 20 and the rotating shaft 24. The connection method of the second crank-slider structure 12 with the second slide rail 19, the second pull rod 20, and the second clamp is the same as above, and will not be described again here. The bending direction of the crank end of the first crank structure is opposite to the bending direction of the crank end of the second crank structure. In practical use, the rotation of the first pull rod 20 is transmitted to the second pull rod 20 through the connecting frame 21, thereby causing the second pull rod 20 to rotate in the same direction. However, since the bending directions of the crank ends of the two crank-slider structures 12 are opposite, the sliding directions of the corresponding slider ends are always opposite, thus realizing the simultaneous clamping or unlocking of the cable by the first clamp and the second clamp. The crank-slider structure 12 has the advantages of simple structure, stable force transmission and convenient maintenance. In actual construction, it can quickly and stably achieve the clamping or unlocking of the cable.
[0060] The slider ends of the two crank-slider structures 12 are axially telescopically connected to the first clamp and the second clamp, respectively.
[0061] In a specific embodiment of this application, the slider end of the first crank slider structure 12 and the slider end of the second crank slider structure 12 are axially telescopically connected to the first clamp and the second clamp, respectively.
[0062] In actual use, the cable adjustment mechanism 3 is first positioned in the cable rotation channel 1 according to the designed rotation spacing of the cable, so that the centering position of the clamping part 11 is located on the designed rotation line of the cable. When the cable deviates from the horizontal position of the designed line due to construction errors, the axial extension and retraction of the slider end of the crank slider structure 12 and the first and second clamps are adjusted. On the basis of ensuring that the cable enters or exits the cable saddle 10 in the horizontal position of the designed line, the linear smoothness of the cable entering and exiting the anchoring system is maintained and improved, and stress concentration caused by excessive bending is avoided.
[0063] The cable adjustment mechanism 3 includes a support plate 18, a clamping part 11, and a linkage mechanism located on the upper side of the support plate 18, and a height adjustment mechanism 23 located on the lower side of the support plate 18.
[0064] In a specific embodiment of this application, the height adjustment mechanism 23 consists of jacks symmetrically distributed at both ends of the lower side of the support plate 18 along a direction perpendicular to the cable rotation. On the one hand, by adjusting the two jacks, the height of the upper structure of the support plate 18, namely the clamping part 11 and the linkage mechanism, can be adjusted to achieve the adjustment of the cable clamping height. On the other hand, by setting the jacks on the lower side of the support plate 18, the upper structure of the support plate 18 can also be supported.
[0065] An angle adjustment mechanism 22 is fixedly installed on the lower side of the support plate 18 to adjust the horizontal angle of the upper structure of the support plate 18.
[0066] The height adjustment mechanism 23 is in contact with the lower side of the support plate 18.
[0067] In a specific embodiment of this application, the angle adjustment mechanism 22 is a support shaft vertically installed at the center of the lower side of the support plate 18 and rotatably connected to the support plate 18. The support shaft is driven to rotate via gear linkage and can extend and retract axially to drive the upper structure of the support plate 18 to adjust the angle in the horizontal direction, thereby realizing the angle adjustment when the cable enters the anchoring system and turns out of the anchoring system. On the one hand, it can meet the special angle requirements of the cable saddle 10 for the cable entering or turning out; on the other hand, when the horizontal position of the cable entering the anchoring system deviates from the design position due to construction errors. Although the cable alignment can be controlled by adjusting the axial extension and retraction of the slider end of the crank-slider structure 12 with the first and second clamps, the cable does not pass perpendicularly through the clamping part 11. The clamping force of the clamping part 11 on each strand of the cable will have a large deviation, resulting in some strands becoming loose and affecting the stress distribution. Therefore, in actual use, the axial retraction and height adjustment mechanism 23 is first contracted, and then the horizontal angle of the upper structure of the support plate 18 is adjusted by the adjustment mechanism so that the cable intersects the clamping part 11 perpendicularly, further improving the control effect of the cable adjustment mechanism 3 on the cable alignment.
[0068] The cable saddle 10 is fixedly connected to the anchor structure 2 via the grid 15 pre-embedded in the lower anchor structure 2 of the cable rotation channel 1 and the grid 15 of the inner anchor structure 2 of the cable rotation channel 1.
[0069] The saddle body 14 of the saddle 10 is slidably connected to the two grids 15 along the cable rotation direction.
[0070] In a specific embodiment of this application, the cable saddle 10 is fixedly connected to the anchor structure 2 via a grid 15 pre-embedded on the top surface of the anchor structure 2 below the cable rotation channel 1 and a grid 15 on the side of the anchor structure 2 inside the cable rotation channel 1. The cable saddle body 14 of the cable saddle 10 and the grids 15 on both sides are slidably connected along the cable rotation direction via friction pairs 25. As the cable's force changes, the cable saddle 10 can smoothly slide and displace to balance and control the cable. Furthermore, the grids 15 are also provided with limit blocks 26 along the cable rotation direction. The limit blocks 26 have a certain distance gap with the cable saddle body 14 of the cable saddle 10, providing sliding space for the cable saddle body 14 while preventing it from sliding out of the grids 15, thus avoiding instability of the overall structure of the cable saddle 10. The friction pairs 25 are made of polytetrafluoroethylene (PTFE).
[0071] The anchoring system includes a diversion saddle 9;
[0072] Diverter saddle 9 is fixedly installed at the top of the cable rotation channel 1 and symmetrically distributed along the main saddle. The main saddle includes a first main saddle 6 and a second main saddle 7. The slots 16 of the first main saddle 6 and the slots 16 of the second main saddle 7 are arranged opposite to each other along the central axis of the top of the cable rotation channel 1. The first main saddle 6 and the second main saddle 7 are axially connected by a force transmission mechanism 8.
[0073] The force transmission mechanism 8 is fixedly installed in the cable rotation channel 1; the diversion saddle 9 includes the saddle body 14;
[0074] The cable includes a first cable 4 and a second cable 5. A first main cable saddle 6 is used for the inverted U-shaped rotation of the first cable 4 at the top of the cable slewing channel 1. A second main cable saddle 7 and a branch cable saddle 9 are used for the M-shaped rotation of the second cable 5 at the top of the cable slewing channel 1.
[0075] In a specific embodiment of this application, the diversion saddle 9 is horizontally positioned in the cable rotation channel 1 and includes a saddle body 14 and a grid 15. One end of the saddle body 14 has a slot 16 horizontally opened in the horizontal direction. Along the cable rotation direction, the diversion saddles 9 are symmetrically distributed on both sides of the main saddles. Along the longitudinal direction of the bridge, the diversion saddles 9 are located between the first main saddle 6 and the second main saddle 7. The first main saddle 6 and the second main saddle 7 are positioned on the top surface of the anchorage structure 2 on the lower side of the top of the cable rotation channel 1 and abut against the force transmission mechanism 8 through their respective grids 15. The slots 16 of the diversion saddle 9 and the first main saddle 6 face the outer side of the cable rotation channel 1, and the slots 16 of the second main saddle 7 face the inner side of the cable rotation channel 1. The slots 16 of the first main saddle 6 and the second main saddle 7 are arranged opposite each other along the central axis of the top of the cable rotation channel 1. The cable slewing channel 1 is specifically an inverted U-shaped structure. After the cable passes horizontally through the slot 16 of the cable saddle 10 on one side of the cable slewing channel 1, it is split into a first cable 4 and a second cable 5 according to a certain ratio. The first cable 4 passes through the slot 16 of the first main cable saddle 6 in an inverted U-shape in the horizontal direction and completes the rotation at the top of the cable slewing channel 1. The second cable 5 passes through the slot 16 of the branch cable saddle 9 on the same side, the slot 16 of the second main cable saddle 7, and the slot 16 of the branch cable saddle 9 on the other side of the second main cable saddle 7 in an M-shape in the horizontal direction and completes the rotation at the top of the cable slewing channel 1. After the first cable 4 and the second cable 5 have completed their rotation, they merge and then pass through the cable saddle 10 on the other side of the cable slewing channel 1 as a whole.
[0076] By splitting the cable into a first cable 4 and a second cable 5, and setting the first cable 4 to rotate in an inverted U-shape at the top centerline of the cable rotation channel 1, and the second cable 5 to rotate in an M-shape at the top of the cable rotation channel 1, specifically, the second cable 5 interacts with the first cable 4 at the centerline of the cable rotation channel 1, rotating in a U-shape. This reduces the longitudinal bridge force applied to the anchorage structure 2 by the first cable 4 through the force transmission mechanism 8, thus avoiding stress concentration at the top centerline of the cable rotation channel 1 in traditional cable saddle systems. At the same time, force analysis shows that the longitudinal bridge force reduced by the first cable 4 at the top centerline of the cable rotation channel 1 is correspondingly dispersed to the split cable saddle 9, that is, increased to the longitudinal bridge force of the second cable 5 on the inner anchorage structure 2 at both sides of the top of the cable rotation channel 1. In summary, the above configuration disperses the stress at the top centerline of the anchorage structure 2 to both sides of the top of the anchorage structure 2, thus avoiding stress concentration at the top centerline of the cable slewing channel 1. Furthermore, by adjusting the distribution ratio of the first cable 4 and the second cable 5, the reduction force of the second cable 5 on the longitudinal bridge force of the first cable 4 and the magnitude of the stress dispersed to the diversion saddle 9 can be adjusted, thereby achieving stress control in the longitudinal bridge direction of the anchorage structure 2. Specifically, the longitudinal bridge force at the top centerline of the anchorage structure 2 can be made the same as the longitudinal bridge force at both sides of the top of the anchorage structure 2, greatly reducing the design difficulty of the anchorage structure 2. On the other hand, the inverted U-shaped slewing profile of the first cable 4 and the M-shaped slewing profile of the second cable 5 fit the slot 16 structure of the traditional main cable saddle and diversion saddle 9, eliminating the need for specially customized cable saddle body 14 and thus avoiding stress concentration of the cable on the main cable saddle and diversion saddle 9.
[0077] The diversion saddle 9 is fixedly connected to the anchor structure 2 via the grid 15 pre-embedded in the lower anchor structure 2 of the cable rotation channel 1 and the grid 15 of the inner anchor structure 2 of the cable rotation channel 1.
[0078] Multiple buffer mechanisms 13 are provided between the saddle body 14 of the diversion saddle 9 and the grid 15 of the anchor structure 2 embedded in the inner side of the cable rotation channel 1. The saddle body 14 of the diversion saddle 9 is flexibly connected to the grid 15 of the anchor structure 2 embedded in the inner side of the cable rotation channel 1 through multiple buffer mechanisms 13.
[0079] In a specific embodiment of this application, the diversion saddle 9 is fixedly connected to the anchor structure 2 via a grid 15 pre-embedded on the top surface of the anchor structure 2 below the cable rotation channel 1 and a grid 15 on the top side of the anchor structure 2 inside the cable rotation channel 1. The diversion saddle 9 includes a saddle body 14, a buffer mechanism 13, and grids 15. The buffer mechanism 13 is a high-strength spring, which is evenly distributed at the four corners between the saddle body 14 of the diversion saddle 9 and the grids 15 pre-embedded on the top side of the anchor structure 2 inside the cable rotation channel 1. During cable rotation, the elastic deformation of the high-strength spring reduces the longitudinal bridge force exerted by the second cable 5 on the anchor structure 2 at both sides of the top of the cable rotation channel 1, thereby reducing the overall stress on the anchor structure 2.
[0080] The saddle body 14 of the diversion saddle 9 is limited and slidably connected to the grid 15 of the anchor structure 2 pre-embedded in the lower side of the cable rotation channel 1.
[0081] In a specific embodiment of this application, to reduce the friction between the saddle body 14 of the diverting saddle 9 and the grid 15 embedded in the anchor structure 2 below the cable rotation channel 1 when the high-strength spring undergoes elastic deformation, the two are slidably connected by a friction pair 25. Simultaneously, a limiting block 26 is also provided in the grid 15 embedded in the anchor structure 2 below the cable rotation channel 1 along the rotation direction of the second cable 5. The limiting block 26 contacts the saddle body 14 of the diverting saddle 9 to restrict the sliding of the saddle body 14 along the rotation direction of the second cable 5, thus preventing instability of the overall structure of the diverting saddle 9. The friction pair 25 is a polytetrafluoroethylene (PTFE) plate.
[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A stress-controlled cable slewing anchorage system, characterized in that, The anchoring system includes a main cable saddle, a slewing cable saddle, a cable adjustment mechanism, and an anchoring structure; The anchorage structure is provided with a cable rotation channel; the cable saddles are symmetrically distributed on both sides of the cable rotation channel, and the main cable saddle is set at the central axis at the top of the cable rotation channel; The cable adjustment mechanisms are symmetrically distributed on both sides of the cable rotation channel. The cable passes through the cable adjustment mechanism, the cable saddle, and the main cable saddle at the top of the cable rotation channel on the same side in sequence, and then passes through the cable saddle and the cable adjustment mechanism on the other side in sequence to complete the rotation. The cable adjustment mechanism is fixedly installed in the cable rotation channel. The cable adjustment mechanism includes a clamping part and a height adjustment mechanism. The clamping part is used to fix the cable, and the height adjustment mechanism is used to adjust the setting height of the clamping part.
2. The stress-controlled cable slewing anchorage system as described in claim 1, characterized in that, The cable adjustment mechanism includes a linkage mechanism, and the clamping part includes a first clamp and a second clamp. The linkage mechanism is used to simultaneously drive the first clamp and the second clamp to slide towards the cable.
3. A stress-controlled cable slewing anchorage system as described in claim 2, characterized in that, The first clamp and the second clamp are symmetrically distributed on both sides of the cable in the horizontal direction; The linkage mechanism includes a mounting plate and a crank-slider structure, a pull rod, and a slide rail disposed at the ends of the first clamp and the second clamp away from the cable. Along the direction perpendicular to the cable rotation, the first clamp, the second clamp, the crank-slider structure, and the slide rail are arranged on one side of the mounting plate; The slide rail is fixedly connected to the mounting plate, and the crank-slider structure is slidably disposed in the slide rail; the slider end of the crank-slider structure is connected to the first clamp and the second clamp; the pull rod is rotatably connected to the slide rail, and the crank end of the crank-slider structure is fixedly connected to the rotation center axis of the pull rod; the pull rod is used to drive the crank-slider structure to slide horizontally along the slide rail; The crank ends of the two crank-slider structures are bent in opposite directions, and the two tie rods are connected by a connecting frame located on the other side of the mounting plate.
4. A stress-controlled cable slewing anchorage system as described in claim 3, characterized in that, The slider ends of the two crank-slider structures are axially telescopically connected to the first clamp and the second clamp, respectively.
5. A stress-controlled cable slewing anchorage system as described in claim 3, characterized in that, The cable adjustment mechanism includes a support plate, the clamping part and the linkage mechanism are disposed on the upper side of the support plate, and the height adjustment mechanism is disposed on the lower side of the support plate.
6. A stress-controlled cable slewing anchorage system as described in claim 5, characterized in that, An angle adjustment mechanism is fixedly installed on the lower side of the support plate to adjust the horizontal angle of the upper structure of the support plate; The height adjustment mechanism is in contact with the lower side of the support plate.
7. A stress-controlled cable slewing anchorage system as described in any one of claims 1-6, characterized in that, The cable saddle is fixedly connected to the anchor structure via a grid embedded in the lower anchor structure of the cable rotation channel and a grid in the inner anchor structure of the cable rotation channel. The saddle body of the cable saddle is slidably connected to the two grids along the cable rotation direction.
8. A stress-controlled cable slewing anchorage system as described in claim 1, characterized in that, The anchoring system includes a diversion saddle; The diversion saddle is fixedly installed at the top of the cable rotation channel and symmetrically distributed along the main saddle. The main saddle includes a first main saddle and a second main saddle. The slots of the first main saddle and the slots of the second main saddle are arranged opposite to each other along the central axis of the top of the cable rotation channel. The first main saddle and the second main saddle are axially connected by a force transmission mechanism. The force transmission mechanism is fixedly installed in the cable rotation channel; the diversion saddle includes a saddle body; The cable includes a first cable and a second cable. The first main cable saddle is used for the inverted U-shaped rotation of the first cable at the top of the cable slewing channel, and the second main cable saddle and the branch cable saddle are used for the M-shaped rotation of the second cable at the top of the cable slewing channel.
9. A stress-controlled cable slewing anchorage system as described in claim 8, characterized in that, The diversion saddle is fixedly connected to the anchor structure via a grid embedded in the lower anchor structure of the cable rotation channel and a grid in the inner anchor structure of the cable rotation channel. Multiple buffer mechanisms are provided between the saddle body of the diversion saddle and the grid of the anchor structure embedded in the inner side of the cable rotation channel. The saddle body of the diversion saddle is flexibly connected to the grid of the anchor structure embedded in the inner side of the cable rotation channel through multiple buffer mechanisms.
10. A stress-controlled cable slewing anchorage system as described in claim 9, characterized in that, The saddle body of the diversion saddle is slidably connected to the grid limiter of the anchor structure pre-embedded in the lower side of the cable rotation channel.