Suspender tensioning structure of high-speed railway tied-arch bridge adopting beam-first arch-second method

Abstract

The invention discloses a suspender tensioning structure of a high-speed railway beam-first arch-second method tied-arch bridge, and relates to the technical field of high-speed railway beam-first arch-second method tied-arch bridges. The fixed plate is connected with the top face of the bottom plate, the jacks are annularly arranged on the top face of the fixed plate, the top plate is fixedly connected with the end faces of the output ends of the jacks, and the suspender body penetrates through the fixed plate; a fixing frame is arranged on the top plate, a wall plate is arranged in the fixing frame, a clamping and fixing assembly is fixedly arranged on one side of the wall plate, the clamping and fixing assembly comprises a driving motor and fixing parts, a threaded rod is rotationally clamped between the pair of fixing parts, and the threaded rod is in threaded connection with a pair of clamping plates; the pair of clamping plates is driven by rotation of the threaded rod to move oppositely so as to clamp the suspender body, and a plurality of positioning bolts capable of being in threaded connection with the fixing plates are arranged on the bottom face of the fixing frame. The nut does not need to be fastened repeatedly according to jacking of the jack, so that operation steps are reduced, the suspender tensioning progress is accelerated, and efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of high-speed railway tie-arch bridges using the beam-first-arch-last method, and in particular to a suspender tensioning structure of a high-speed railway tie-arch bridge using the beam-first-arch-last method. Background Art

[0002] After entering this century, with the rapid development of my country's social economy, the construction of infrastructure such as high-speed railways in my country has entered a period of rapid construction; the tied arch bridge is a beam-arch composite structure with outstanding advantages of large span and stiffness, excellent force-bearing performance, convenient construction, and light and beautiful shape. It is widely used in railways and urban rail transit; in the tied arch bridge, the arch rib will produce horizontal thrust, and the hanger helps to balance this horizontal thrust through the synergistic effect with the tie rod. The tie rod is usually designed as a horizontal member, while the hanger is vertical. They work together to ensure the stability of the bridge. Specifically, the load of the bridge deck system is transferred to the arch rib through the hanger, making the arch rib the main load-bearing structure.

[0003] Traditional boom tensioning technology generally involves passing the lower part of the boom through the anchor box, installing a steel pad at the bottom of the boom, and installing a jack between the steel pad and the anchor box. The boom is moved downward by multiple liftings of the jack, and the nut is tightened once each time the jacking is performed until the tension reaches the design value. The boom is then tightened to complete the tensioning.

[0004] With respect to the above-mentioned related technologies, the inventor believes that this hanger tensioning method requires tightening the nuts multiple times, which slows down the progress and affects the efficiency. Summary of the invention

[0005] The purpose of this application is to provide a tie-arch bridge suspender tensioning structure for a high-speed railway beam-first-arch-later method, so as to improve the problem that the traditional suspender tensioning method requires multiple tightening of nuts, which leads to slow progress and affects efficiency.

[0006] The present application provides a tie-arch bridge suspender tension structure for high-speed railways using the beam-first-arch-later method, which adopts the following technical solutions: The high-speed railway beam-first-arch-later method tied arch bridge suspender tension structure comprises a bottom plate fixed to the bridge deck, a fixing plate connected to the top surface of the bottom plate, a plurality of jacks arranged in an annular manner on the top surface of the fixing plate, a top plate fixedly connected to the end surface of the jack output end, and a suspender body arranged through the fixing plate; A fixing frame is provided on one side of the top plate opposite to the fixing plate, a wall panel is provided in the fixing frame, a clamping and fixing assembly is fixedly provided on one side of the wall panel, the clamping and fixing assembly includes a driving motor and a fixing member provided on one side of the wall panel, a pair of fixing members are provided, a threaded rod is rotatably engaged between the pair of fixing members, a pair of clamping plates are threadedly connected to the threaded rod, a first gear is provided at the output end of the driving motor, a second gear is correspondingly provided at the center position of the threaded rod, a toothed belt for transmission is provided outside the first gear and the second gear, the pair of clamping plates move toward each other under the rotation of the threaded rod to clamp the suspension rod body, and a plurality of positioning bolts that can be threadedly connected to the fixing plate are provided on the bottom surface of the fixing frame.

[0007] By adopting the above technical scheme, the overall structure can be conveniently fixed at a predetermined position on the bridge deck by setting a fixing plate, a clamping and fixing component can be placed by setting a fixing frame set on a side of the top plate opposite to the fixing plate, a driving motor is set to drive the first gear to rotate, and the second gear is driven to rotate by the rack transmission, so that the clamping plate clamps and fixes the bottom end of the hanger body passing through the top plate, which is convenient for fixing the hanger body, improving the automation of the overall structure, and reducing manual operation; by setting a jack to pull down the top plate, the hanger body is driven to move synchronously until it moves to a suitable cable force, and the vertical position of the fixing frame is fixed by positioning bolts to fix the hanger position and lock the hanger cable force; there is no need to tighten the nuts multiple times according to the jacking, thereby reducing the operating steps, speeding up the hanger tensioning progress, and improving efficiency.

[0008] Optionally, a vertical plate is disposed on the top surface of the bottom plate, a fixing seat for clamping the vertical plate is disposed on the bottom surface of the fixing plate, and a latch is provided through the fixing seat and the vertical plate to enable the fixing seat to be rotatably connected to the vertical plate.

[0009] By adopting the above technical solution, the overall stability of the bridge can be effectively improved by setting a fixed seat and a fixed plate to hinge the hanger through a pin; the hanger transfers the load of the bridge deck system to the arch rib, and the hinge allows the hanger to swing freely within a certain range, thereby reducing the structural stress concentration caused by factors such as temperature changes and vehicle loads. This design can effectively prevent the bridge from being damaged under extreme conditions and improve the durability and safety of the bridge; traditional rigid hangers are prone to stress concentration at the connection when subjected to force, while articulated hangers can better distribute the load and reduce stress concentration by allowing a certain degree of rotation and displacement, which is of great significance for improving the fatigue life and impact resistance of the bridge.

[0010] Optionally, the clamping plate is provided with clamping grooves for clamping the boom body along the up-down direction.

[0011] By adopting the above technical solution, the slotted design can increase the contact area between the clamping plate and the suspension rod, thereby improving the clamping force. After slotting, the contact between the clamping plate and the suspension rod is no longer a simple plane contact, but a multi-point contact or line contact is formed through the slot. This contact method can more effectively transfer and disperse the load; the slotted design can effectively reduce stress concentration and local stress concentration. Improve the fatigue life and impact resistance of the clamping plate.

[0012] Optionally, the cross section of the clamping groove is trapezoidal in shape with three sides abutting against the suspension rod body.

[0013] By adopting the above technical solution, the groove design with a trapezoidal cross-section can improve the adaptability of the clamping plate to hangers of different diameters, and can conveniently clamp hangers of different diameters without replacing the clamping plate, thereby reducing construction difficulty and cost and improving construction efficiency.

[0014] Optionally, a mounting portion is provided at the bottom of the boom body, a slope is provided on the side of the mounting portion, and the clamping groove is provided with an inclined clamping surface matched with the slope.

[0015] By adopting the above technical solution, by setting an inclined clamping surface to counteract the inclined surface of the mounting part, the boom body can better resist the tension pulling effect, and no longer rely solely on the clamping force of the clamping plate. The force that counteracts the downward oblique surface of the mounting part is increased to fix the mounting part, thereby more stably fixing the boom body.

[0016] Optionally, a plurality of straight fixing bolts threadedly connected to the boom body are arranged in a ring shape on the side surface of the mounting portion, and a plurality of oblique fixing bolts threadedly connected to the boom body are arranged in a ring shape on the inclined surface.

[0017] By adopting the above technical scheme, the installation part and the boom body are fixedly connected by arranging straight fixing bolts, so as to resist the tendency of the boom body to separate from the installation part when being tensioned; by arranging oblique fixing bolts, the load can be better dispersed and transferred, so that the boom body is more stable when subjected to tension and shear force. This design can effectively prevent the boom body from slipping or breaking during the force-bearing process, improve the bearing capacity and safety of the boom body, and effectively improve the tensile and shear resistance of the boom body; oblique fixing bolts are used to reduce stress concentration. Traditional straight fixing screws are prone to stress concentration at the edge of the bolt hole, while oblique fixing bolts can disperse stress distribution and reduce local stress concentration by changing the force transmission path, which plays an important role in improving the fatigue life and impact resistance of the boom body.

[0018] Optionally, a guide rod penetrating the pair of clamping plates is fixedly arranged between the pair of fixing members.

[0019] By adopting the above technical solution, a guide rod is set to make the clamping plate more stable during clamping movement, thereby improving the clamping stability of the clamping plate on the boom body, thereby stabilizing the boom body and reducing its shaking; at the same time, the guide rod plays a certain fixing role, resisting the tendency of the clamping plate to move upward when clamping the boom body, thereby avoiding damage to the clamping plate.

[0020] Optionally, a sliding groove is provided on the bottom surface of the fixing frame, and a sliding block which slides and engages in the sliding groove is provided on the bottom surface of the clamping plate.

[0021] By adopting the above technical scheme, by setting a sliding groove on the bottom surface of the fixed frame and a slider corresponding to the sliding groove on the bottom surface of the clamping plate, when the boom body is in a non-tensioned state, the clamping plate is supported to keep the clamping plate sliding stably; when the boom body is in a tensioned state, the slider slides and engages in the sliding groove, limiting the movement of the clamping plate in the up and down directions, reinforcing the clamping plate to prevent it from being lifted up under the tensioning action of the boom body, improving the ability of the clamping plate to stably clamp the boom body, thereby increasing the tensioning cable force range of the boom body.

[0022] Optionally, the top plate is provided with a through hole corresponding to the hanger body, and the hanger body is provided with a fixing sleeve that is clamped and sleeved outside the hanger body. The fixing sleeve is adapted to the through hole, and the fixing sleeve is provided with a fixing plate. The fixing plate is fixed to the top plate bolts when the fixing sleeve is clamped in the through hole.

[0023] By adopting the above technical scheme, a through hole is provided to facilitate the installation of the mounting part in front of the tensioning boom body, and the mounting part is clamped by the clamping plate through the through hole; a fixed sleeve is provided to block the through hole after the tensioning cable force of the boom body is adjusted, so as to prevent dust, water accumulation and other debris from corroding and damaging the overall structure, thereby extending the service life of the overall structure; a fixed sleeve is fixed to the top plate by providing a fixed plate, and the fixing sleeve is engaged with the boom body to share the tensioning force of the boom body, stabilize and fix the boom body, and improve the stability of the overall structure.

[0024] Optionally, a rubber gasket is provided on the inner wall of the fixing sleeve corresponding to the boom body.

[0025] By adopting the above technical solution, a rubber gasket is set so that the fixed sleeve can fit tightly with the boom body, thereby enhancing the fixing sleeve's ability to block dust, stagnant water and other debris, while improving the fixing sleeve's ability to tighten the boom body, and enhancing the friction force of the fixed sleeve on the boom body, so that it can better engage and fix the boom body, and cooperate with the fixed plate to better resist the tension force of the boom body.

[0026] In summary, the present application includes at least the following beneficial technical effects of the high-speed railway beam-first-arch-later method tie-arch bridge suspender tension structure: 1. By setting a fixing plate, it is convenient to fix the whole structure at a predetermined position on the bridge deck. By setting a fixing frame on one side of the top plate opposite to the fixing plate, a clamping and fixing assembly is placed. By setting a driving motor to drive the first gear to rotate, the second gear is driven to rotate through the rack transmission, so that the clamping plate clamps and fixes the bottom end of the boom body that passes through the top plate, which is convenient for fixing the boom body, improving the automation of the whole structure and reducing manual operation. By setting a jack to pull down the top plate, the boom body is driven to move synchronously until it moves to a suitable cable force. The vertical position of the fixing frame is fixed by positioning bolts to fix the position of the boom and lock the cable force of the boom. There is no need to tighten the nut multiple times according to the lifting of the jack, thereby reducing the operation steps, speeding up the progress of the boom tensioning and improving efficiency. 2. The overall stability of the bridge can be effectively improved by setting a fixed seat and a fixed plate to articulate the hanger through a pin; the hanger transfers the load of the bridge deck system to the arch rib, and the articulation allows the hanger to swing freely within a certain range, thereby reducing the structural stress concentration caused by factors such as temperature changes and vehicle loads. This design can effectively prevent the bridge from being damaged under extreme conditions and improve the durability and safety of the bridge; traditional rigid hangers are prone to stress concentration at the connection when subjected to force, while articulated hangers can better distribute the load and reduce stress concentration by allowing a certain degree of rotation and displacement, which is of great significance for improving the fatigue life and impact resistance of the bridge; 3. By setting straight fixing bolts to fix the connection between the mounting part and the boom body, the tendency of the boom body to detach from the mounting part when being tensioned can be resisted; by setting oblique fixing bolts, the load can be better dispersed and transferred, so that the boom body is more stable when subjected to tension and shear force. This design can effectively prevent the boom body from slipping or breaking during the force-bearing process, improve the bearing capacity and safety of the boom body, and effectively improve the tensile and shear resistance of the boom body; oblique fixing bolts can reduce stress concentration. Traditional straight fixing screws are prone to stress concentration at the edge of the bolt hole, while oblique fixing bolts can disperse stress distribution and reduce local stress concentration by changing the force transmission path, which plays an important role in improving the fatigue life and impact resistance of the boom body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the tie-arch bridge hanger tension structure of the high-speed railway beam-first-arch method; Figure 2 It is a cross-sectional schematic diagram used to reflect the internal structure of the fixed frame; Figure 3 is a schematic diagram for illustrating the structure of a fixed clamping assembly in an embodiment; Figure 4 is a schematic diagram for illustrating the overall structure of the fixed sleeve in the embodiment; Figure 5 It is a cross-sectional schematic diagram for illustrating the structure of the mounting portion in the embodiment.

[0028] In the figure, 1, bottom plate; 2, fixing plate; 3, jack; 4, top plate; 5, boom body; 6, fixing frame; 61, wall panel; 7, clamping and fixing assembly; 71, driving motor; 711, first gear; 72, fixing piece; 73, threaded rod; 732, second gear; 74, clamping plate; 741, clamping groove; 7411, oblique clamping surface; 8, toothed belt; 9, positioning bolt; 10, vertical plate; 11, fixing seat; 12, latch; 13, mounting portion; 131, inclined surface; 14, vertical fixing bolt; 15, oblique fixing bolt; 16, guide rod; 17, slide groove; 18, slider; 19, fixing sleeve; 191, fixing plate; 20, rubber gasket. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0030] High-speed railway beam-first-arch-later method tied arch bridge hanger tension structure, reference Figure 1 , Figure 5 , including a bottom plate 1 fixed on the bridge deck, a fixing plate 2 connected to the top surface of the bottom plate 1, a plurality of jacks 3 arranged in an annular manner on the top surface of the fixing plate 2, a top plate 4 fixedly connected to the end surface of the output end of the jack 3, and a suspender body 5 arranged through the fixing plate 2; The bottom of the boom body 5 is provided with a mounting portion 13, a slope 131 is provided on the side of the mounting portion 13, four threaded holes are provided in a ring on the side of the mounting portion 13, four threaded holes are provided in a ring on the slope 131, and the boom body 5 is provided with extension holes corresponding to the above-mentioned threaded holes to continue the threaded holes, a straight fixing bolt 14 is threadedly connected to the threaded hole on the side of the mounting portion 13, and an oblique fixing bolt 15 is threadedly connected to the threaded hole on the slope 131, and both the straight fixing bolt 14 and the oblique fixing bolt 15 are countersunk bolts.

[0031] Reference Figure 1 , Figure 2 , Figure 3 The bottom plate 1 is provided with a plurality of threaded holes, in which expansion bolts are arranged, and the bottom plate 1 is fixed to the bridge deck through the expansion bolts; a vertical plate 10 is arranged on the top surface of the bottom plate 1, and a fixing seat 11 for clamping the vertical plate 10 is arranged on the bottom surface of the fixing plate 2 corresponding to the vertical plate 10, and a groove is provided on the fixing seat 11 for clamping the vertical plate 10, and holes are provided on the fixing seat 11 and the vertical plate 10 correspondingly, and a latch 12 is provided through the hole to enable the fixing seat 11 to be rotatably connected with the vertical plate 10, and both ends of the latch 12 are fastened by pier pressing to prevent the latch 12 from moving and falling off; A fixing frame 6 is provided on one side of the top plate 4 relative to the fixing plate 2. The fixing frame 6 is a hollow rectangular box body with a single-side opening. The opening of the fixing frame 6 is welded and fixed to the top plate 4. A wall plate 61 is integrally provided in the fixing frame 6. A clamping and fixing assembly 7 is fixedly provided on one side of the wall plate 61. The clamping and fixing assembly 7 includes a driving motor 71 fixed by bolts to one side of the wall plate 61 and a fixing member 72 welded and fixed to the same side of the driving motor 71. The fixing member 72 is a plate member and is provided in a pair. A hole is correspondingly provided between the pair of fixing members 72, and a A threaded rod 73 is provided between the pair of fixing members 72 through a bearing and is rotatably engaged. A second gear 732 is provided at the center of the threaded rod 73. The threaded rod 73 is provided with a threaded end on both sides of the second gear 732, and the thread directions of the two sections of the threaded rod 73 are opposite. A pair of clamping plates 74 are threadedly connected to the threaded rod 73, which are respectively located on both sides of the second gear 732; a guide rod 16 is fixedly connected between the pair of fixing members 72, and a hole is opened in the clamping plate 74 corresponding to the guide plate, and the clamping plate 74 slides on the guide rod 16; Two sets of slide grooves 17 are provided on the bottom surface of the fixed frame 6 and are located on both sides of the boom body 5. Two sliders 18 are provided on the bottom surface of the clamping plate 74 corresponding to the slide grooves 17. The sliders 18 slide in the slide grooves 17, and the slide grooves 17 limit the movement of the sliders 18 in the up-down direction. The clamping plate 74 is provided with a clamping groove 741 for clamping the boom body 5 in the up-down direction. The cross section of the clamping groove 741 is a trapezoid with three sides against the boom body 5. The lower end of the clamping groove 741 is provided with an oblique clamping surface 7411 which is tapered as a whole. A first gear 711 is provided at the output end of the driving motor 71. A toothed belt 8 for transmission is provided on the outer sleeve of the first gear 711 and the second gear 732. The driving motor 71 drives the screw to rotate so that a pair of clamping plates 74 move towards each other on the threaded rod 73 to clamp the suspension rod body 5. A plurality of positioning bolts 9 that can be threadedly connected to the fixing plate 2 are provided on the bottom surface of the fixing frame 6. The number of the positioning bolts 9 is not fixed and must be evenly distributed to ensure uniform stress and stable fixation.

[0032] Reference Figure 1 , Figure 4 A through hole is provided on the top plate 4 corresponding to the boom body 5 for the boom body 5 to pass through, and the diameter of the through hole is larger than the diameter of the mounting portion 13; a fixing sleeve 19 is provided on the outside of the boom body 5, and the fixing sleeve 19 is adapted to the through hole. After the rope force debugging of the boom body 5 is completed, the fixing sleeve 19 is slid into the through hole, and a rubber gasket 20 is provided on the inner wall of the fixing sleeve 19 corresponding to the boom body 5. The rubber gasket 20 is made of a rubber material with good sealing performance. The rubber gasket 20 and the fixing sleeve 19 are fixed from the inner ring by countersunk bolts. A fixing disk 191 is provided on the top surface of the fixing sleeve 19, and a plurality of threaded holes are opened on the fixing disk 191. Corresponding threaded holes are opened on the top plate 4. After the fixing sleeve 19 is engaged in the through hole, the fixing plate 2 is fixed to the top plate 4 by bolts.

[0033] The implementation principle of the embodiment of the present application is: During actual use, the base plate 1 is fixed to the preset position of the bridge deck by expansion bolts, and the mounting portion 13 is installed at the bottom of the boom body 5 so that the mounting portion 13 passes through the through hole to reach the fixed frame 6, and the drive motor 71 is started. The drive motor 71 drives the first gear 711 to rotate, and drives the second gear 732 through the toothed belt 8, thereby driving the threaded rod 73 to rotate. The rotation of the threaded rod 73 causes a pair of clamping plates 74 to move toward each other to clamp and fix the boom body 5 and the mounting portion 13. At this time, the jack 3 is used to simultaneously press down the top plate 4, and the fixed frame 6 connected to it moves downward synchronously until it is adjusted to the ideal cable tension and stops. Then, the fixing frame 6 and the fixing plate 2 are fixed by the positioning bolts 9, thereby locking and reinforcing the cable tension of the boom body 5. Finally, the fixing sleeve 19 is slid into the through hole to engage, and the bolt fixes the fixing plate 191. This structure does not need to tighten the nut multiple times according to the lifting of the jack 3, thereby reducing the operation steps, speeding up the progress of the boom tensioning, and improving efficiency.

[0034] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The high-speed railway beam-first-arch-later method of tied arch bridge hanger tension structure is characterized by: It comprises a bottom plate (1) fixed on the bridge deck, a fixing plate (2) connected to the top surface of the bottom plate (1), a plurality of jacks (3) arranged in an annular manner on the top surface of the fixing plate (2), a top plate (4) fixedly connected to the output end surfaces of the jacks (3), and a suspension rod body (5) arranged to penetrate the fixing plate (2); A fixing frame (6) is provided on one side of the top plate (4) relative to the fixing plate (2), a wall plate (61) is provided in the fixing frame (6), a clamping and fixing assembly (7) is fixedly provided on one side of the wall plate (61), the clamping and fixing assembly (7) comprises a driving motor (71) and a fixing member (72) provided on one side of the wall plate (61), a pair of the fixing members (72) are provided, a threaded rod (73) is rotatably engaged between the pair of the fixing members (72), and the threaded rod (73) is threadedly connected to a pair of clamping members (71). A holding plate (74), a first gear (711) is arranged at the output end of the driving motor (71), a second gear (732) is arranged at the center position of the threaded rod (73), a toothed belt (8) for transmission is arranged on the outer sleeve of the first gear (711) and the second gear (732), a pair of the clamping plates (74) move towards each other under the rotation drive of the threaded rod (73) to clamp the suspension rod body (5), and a plurality of positioning bolts (9) which can be threadedly connected to the fixing plate (2) are arranged on the bottom surface of the fixing frame (6).

2. The high-speed railway beam-first-arch-later method tied arch bridge suspender rod tensioning structure according to claim 1 is characterized by: The top surface of the bottom plate (1) is provided with a vertical plate (10), the bottom surface of the fixed plate (2) is provided with a fixing seat (11) for clamping the vertical plate (10), and a latch (12) is provided between the fixing seat (11) and the vertical plate (10) to enable the fixing seat (11) to be rotatably connected with the vertical plate (10).

3. The high-speed railway beam-first-arch-later method tied-arch bridge suspender rod tensioning structure according to claim 1 is characterized by: The clamping plate (74) is provided with a clamping groove (741) for clamping the suspension rod body (5) along the up-down direction.

4. The high-speed railway beam-first-arch-later method tied-arch bridge suspender rod tensioning structure according to claim 3 is characterized by: The cross section of the clamping groove (741) is in the shape of a trapezoid with three sides abutting against the suspension rod body (5).

5. The high-speed railway beam-first-arch-later method tied arch bridge suspender tensioning structure according to claim 3 is characterized by: The bottom of the suspension rod body (5) is provided with a mounting portion (13), a side of the mounting portion (13) is provided with an inclined surface (131), and the clamping groove (741) is provided with an inclined clamping surface (7411) adapted to the inclined surface (131).

6. The high-speed railway beam-first-arch-later method tied arch bridge suspender rod tensioning structure according to claim 5, characterized in that: A plurality of straight fixing bolts (14) threadedly connected to the boom body (5) are arranged in an annular shape on the side surface of the mounting portion (13), and a plurality of oblique fixing bolts (15) threadedly connected to the boom body (5) are arranged in an annular shape on the inclined surface (131).

7. The high-speed railway beam-first-arch-later method tied arch bridge suspender rod tensioning structure according to claim 1 is characterized by: A guide rod (16) penetrating a pair of clamping plates (74) is fixedly arranged between the pair of fixing members (72).

8. The high-speed railway beam-first-arch-later method tied-arch bridge suspender tension structure according to claim 1, characterized in that: The bottom surface of the fixed frame (6) is provided with a slide groove (17), and the bottom surface of the clamping plate (74) is provided with a slider (18) which slides and engages in the slide groove (17).

9. The high-speed railway beam-first-arch-later method tied arch bridge suspender rod tensioning structure according to claim 1, characterized in that: The top plate (4) is provided with a through hole corresponding to the boom body (5); the boom body (5) is provided with a fixing sleeve (19) that is snap-fitted on the outside; the fixing sleeve (19) is adapted to the through hole; the fixing sleeve (19) is provided with a fixing plate (191); and the fixing plate (191) is bolted to the top plate (4) when the fixing sleeve (19) is snap-fitted in the through hole.

10. The high-speed railway beam-first-arch-later method tied arch bridge suspender rod tensioning structure according to claim 9, characterized in that: A rubber gasket (20) is provided on the inner side wall of the fixing sleeve (19) corresponding to the suspension rod body (5).

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