An adaptive anchoring device on the arch for replacing the sling cable of a box-type arch bridge

Abstract

The utility model discloses an arch-mounted adaptive anchoring device for replacing the slings of a box-type arch bridge, which belongs to the technical field of sling replacement and solves the technical problem that the existing leveling anchoring structure system is complicated and cannot be used in a cyclic manner. The anti-slip mechanism of the utility model includes an arch-mounted anchoring beam and an arch-mounted anchoring beam located on the upper and lower sides of the box-type main arch ring. The arch-mounted anchoring beam is anchored and connected to the arch-mounted anchoring beam through a prestressed pull rod. The arch-mounted anchoring beam is provided with an adaptive leveling mechanism. The adaptive leveling mechanism includes a support seat that is rotatably connected to the arch-mounted anchoring beam. The top of the support seat is provided with an arc-shaped slide groove, and an arc-shaped slider is slidably connected in the arc-shaped slide groove. The top of the arc-shaped slider supports an arch-mounted support beam for lifting the bridge deck beam. The support seat is provided with a limiting mechanism for limiting the arch-mounted support beam on both sides. The utility model has a small influence on the force of the original structure, can be assembled and disassembled for cyclic use, and has a lightweight structure, low manual labor intensity, and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of sling cable replacement, and more specifically, to an arch-mounted adaptive anchoring device used for replacing sling cables of a box-type arch bridge. Background Art

[0002] The temporary suspender method is used to convert the force system for the replacement of the suspenders of the box-type main arch ring arch bridge. The anchor structure on the temporary suspender arch is a design difficulty, which needs to be further designed in combination with the cross-sectional structure and materials of the main arch ring. The conventional design scheme has the following shortcomings: It is necessary to set a fixed leveling anchor structure on the arch according to different inclination angles.

[0003] For the concrete box-type main arch ring section, the reinforcement is planted and the concrete is poured on site at one time. However, the drilling of reinforcement holes will damage the concrete section, and the on-site production, maintenance, and later demolition cycle are long and the cost is high.

[0004] For the steel structure box-type main arch ring section, different types of anchoring and leveling structures are directly welded on site according to the different inclination angles of the arch. However, hot work on the arch poses great safety risks, welding is easy to damage the steel structure section, and the on-site production and later dismantling cycle is long and the cost is high.

[0005] In summary, the conventional leveling anchoring structure system is complex, has a low degree of standardization, high work intensity, and cannot be used in rotation for similar projects of the same type. Utility Model Content

[0006] The technical problem to be solved by the utility model is aimed at the above-mentioned deficiencies in the prior art. The purpose of the utility model is to provide an adaptive anchoring device on the arch for replacing the slings of a box-type arch bridge, which has little influence on the stress of the original structure, can be assembled and disassembled for rotation, has a short installation and disassembly cycle, and has a lightweight structure, low labor intensity, high work efficiency, and economical cost, and can be rotated for use in similar projects of the same type.

[0007] The technical solution of the utility model is: an arch adaptive anchoring device for replacing the suspension cables of a box-type arch bridge, comprising an anti-slip mechanism installed on the periphery of the box-type main arch ring on both sides of the suspension cables to be replaced, the anti-slip mechanism comprising an arch anchoring beam and an arch anchoring beam located on the upper and lower sides of the box-type main arch ring, the two ends of the arch anchoring beam are respectively anchored and connected to the two ends of the arch anchoring beam through prestressed pull rods, at least one adaptive leveling mechanism is provided on one side of the arch anchoring beam, the adaptive leveling mechanism comprises a support seat rotatably connected to the arch anchoring beam, the top of the support seat is provided with an arc-shaped slide groove, the arc-shaped slide groove is slidably connected with an arc-shaped sliding block, the top of the arc-shaped sliding block supports an arch support beam for lifting the bridge deck beam, and the support seat is provided with a limiting mechanism for limiting the arch support beam on both sides.

[0008] As a further improvement, the top of the arch-mounted anchoring beam is provided with a first tensioning end anchor for anchoring the prestressed tie rod, and correspondingly, the bottom of the arch-mounted anchoring beam is provided with a first fixed end anchor for anchoring the prestressed tie rod.

[0009] Furthermore, the arch upper anchoring cross beam is provided with a first connecting plate, and the support seat is provided with a second connecting plate, and the first connecting plate is rotatably connected to the second connecting plate through a connecting pin.

[0010] Furthermore, the cross section of the arc-shaped slide groove is a T-shaped structure, and correspondingly, the cross section of the arc-shaped sliding block is a T-shaped structure that matches the arc-shaped slide groove.

[0011] Furthermore, the limiting mechanism includes screw rods respectively located on both sides of the support seat, the screw rods are threadedly connected to the support seat, and one end of the screw rods is pressed against the side surface of the arch upper support beam.

[0012] Furthermore, one end of the screw rod is provided with a ball head which presses against the supporting cross beam on the arch.

[0013] Furthermore, there are two adaptive leveling mechanisms, and the two adaptive leveling mechanisms are respectively located on both sides of the top surface of the box-shaped main arch ring.

[0014] Furthermore, tensioning mechanisms are respectively provided at both ends of the arch support beam, and the tensioning mechanism includes a tensioning jack located at the top of the arch support beam, and the tensioning jack is provided with a temporary sling for lifting the bridge deck beam.

[0015] Furthermore, an under-arch supporting beam is provided between two temporary suspension cables of the same upper-arch supporting beam, and a supporting longitudinal beam for supporting the bridge deck beam is provided between the two under-arch supporting beams.

[0016] Furthermore, a second tensioning end anchor for anchoring the temporary sling is provided at the top of the tensioning jack, and correspondingly, a second fixed end anchor for anchoring the temporary sling is provided at the bottom of the under-arch supporting beam.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The utility model has less influence on the stress of the original structure, can be assembled and disassembled for rotation, has a short installation and disassembly cycle, has a lightweight structure, has low manual labor intensity, high work efficiency, and economical cost, and can be rotated for use in similar projects of the same type. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the practical application of the utility model;

[0021] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the main structure of the practical application of the utility model;

[0023] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0024] Figure 5 This is a structural schematic diagram of the anchoring crossbeam and the support seat on the middle arch of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the support seat in the utility model;

[0026] Figure 7 It is a structural schematic diagram of the arc-shaped slider in the utility model.

[0027] Among them: 1-cable to be replaced, 2-box-type main arch ring, 3-anchor beam on the arch, 4-anchor beam under the arch, 5-prestressed tie rod, 6-support seat, 7-arc slide, 8-arc slider, 9-bridge deck beam, 10-support beam on the arch, 11-first tensioning end anchor, 12-first fixed end anchor, 13-first connecting plate, 14-second connecting plate, 15-connecting pin, 16-screw, 17-ball head, 18-tensioning jack, 19-temporary sling, 20-support beam under the arch, 21-support longitudinal beam, 22-second tensioning end anchor, 23-second fixed end anchor. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0029] See also Figure 1 to Figure 7, an arch-mounted adaptive anchoring device for replacing the slings of a box-type arch bridge, comprising an anti-slip mechanism installed on the periphery of a box-type main arch ring 2 on both sides of the slings 1 to be replaced, the anti-slip mechanism comprising an arch-mounted anchoring beam 3 and an arch-mounted anchoring beam 4 located on the upper and lower sides of the box-type main arch ring 2, the two ends of the arch-mounted anchoring beam 3 being anchored and connected to the two ends of the arch-mounted anchoring beam 4 through prestressed tie rods 5. One side of the arch-mounted anchoring beam 3 is provided with at least one adaptive leveling mechanism, the adaptive leveling mechanism comprising a support seat 6 rotatably connected to the arch-mounted anchoring beam 3, the support seat 6 being in contact with the top surface of the box-type main arch ring 2, the top of the support seat 6 being provided with an arc-shaped slide groove 7, the arc-shaped slider 8 being slidably connected in the arc-shaped slide groove 7, the top of the arc-shaped slider 8 supporting an arch-mounted support beam 10 for lifting the bridge deck beam 9. The arc-shaped slider 8 automatically slides to the lowest point of the arc-shaped slide groove 7 under the pressure of the arch-mounted support beam 10, and the top surface of the arc-shaped slider 8 is in a horizontal state. Preferably, the arc-shaped slide groove 7 is a circular arc-shaped slide groove. The support seat 6 is provided with a limiting mechanism for limiting the arch upper support beam 10 on both sides.

[0030] Specifically, the number of the adaptive leveling mechanisms can be set according to the weight of the bridge deck cross beam 9. Preferably, the number of the adaptive leveling mechanisms is two, and the two adaptive leveling mechanisms are respectively located on both sides of the top surface of the box-type main arch ring 2, so that the deformation of the suspended parts at both ends of the arch support cross beam 10 is small during operation.

[0031] The top of the arch anchor beam 3 is provided with a first tensioning end anchor 11 for anchoring the prestressed tie rod 5, and correspondingly, the bottom of the arch anchor beam 4 is provided with a first fixed end anchor 12 for anchoring the prestressed tie rod 5. That is, a "well"-shaped structure is formed between the arch anchor beam 3, the arch anchor beam 4, and the two prestressed tie rods 5 to clamp the box-type main arch ring 2 to achieve an anti-slip effect.

[0032] The arch anchoring beam 3 is provided with a first connecting plate 13, and the support seat 6 is provided with a second connecting plate 14. The first connecting plate 13 is rotatably connected to the second connecting plate 14 through a connecting pin 15 to achieve the follow-up movement of the support seat 6, so that the support seat 6 is always in contact with the top surface of the box-type main arch ring 2, and is convenient for disassembly and assembly.

[0033] Preferably, the cross-section of the arcuate slot 7 is a T-shaped structure, and correspondingly, the cross-section of the arcuate slider 8 is a T-shaped structure adapted to the arcuate slot 7, so that the arcuate slider 8 can meet lateral and vertical limit during the rotation process in the arcuate slot 7.

[0034] The limiting mechanism includes screw rods 16 respectively located on both sides of the support seat 6, the screw rods 16 are threadedly connected to the support seat 6, and one end of the screw rod 16 presses against the side of the arch upper support beam 10. Furthermore, one end of the screw rod 16 is provided with a ball head 17 for pressing against the arch upper support beam 10, so that the support seat 6 can effectively press against the side of the arch upper support beam 10 at all tilt angles.

[0035] Tensioning mechanisms are provided at both ends of the arch support beam 10, and the tensioning mechanisms include a tensioning jack 18 located at the top of the arch support beam 10, and the tensioning jack 18 is provided with a temporary sling 19 for lifting the bridge deck beam 9. Specifically, an arch support beam 20 is provided between two temporary slings 19 of the same arch support beam 10, and a supporting longitudinal beam 21 for supporting the bridge deck beam 9 is provided between the two arch support beams 20 (there are two arch support beams 10, and each arch support beam 10 corresponds to an arch support beam 20). A second tensioning end anchor 22 for anchoring the temporary sling 19 is provided at the top of the tensioning jack 18, and correspondingly, a second fixed end anchor 23 for anchoring the temporary sling 19 is provided at the bottom of the arch support beam 20.

[0036] The utility model can adapt to different inclination angles on the arch, has little influence on the stress of the original structure, can be assembled and disassembled for rotation, has a short installation and disassembly cycle, and has a lightweight structure, low manual labor intensity, high work efficiency, and economical cost, and can be rotated for use in similar projects of the same type.

[0037] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An adaptive anchoring device on an arch for replacing the sling of a box-type arch bridge, characterized in that: The invention comprises an anti-slip mechanism installed on the periphery of a box-type main arch ring (2) on both sides of a sling (1) to be replaced, the anti-slip mechanism comprising an arch-mounted anchoring beam (3) and an arch-mounted anchoring beam (4) located on the upper and lower sides of the box-type main arch ring (2), the two ends of the arch-mounted anchoring beam (3) being anchored and connected to the two ends of the arch-mounted anchoring beam (4) through prestressed tie rods (5), at least one self-adaptive leveling mechanism is provided on one side of the arch-mounted anchoring beam (3), the self-adaptive leveling mechanism comprising a support seat (6) rotatably connected to the arch-mounted anchoring beam (3), the top of the support seat (6) being provided with an arc-shaped slide groove (7), the arc-shaped slide groove (7) being slidably connected with an arc-shaped slide block (8), the top of the arc-shaped slide block (8) supporting an arch-mounted support beam (10) for lifting a bridge deck beam (9), the support seat (6) being provided with a limiting mechanism for limiting the arch-mounted support beam (10) on both sides.

2. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 1, characterized in that: The top of the arch-mounted anchor beam (3) is provided with a first tensioning end anchor (11) for anchoring the prestressed tie rod (5), and correspondingly, the bottom of the arch-mounted anchor beam (4) is provided with a first fixed end anchor (12) for anchoring the prestressed tie rod (5).

3. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 1, characterized in that: The arch-mounted anchoring cross beam (3) is provided with a first connecting plate (13), and the supporting seat (6) is provided with a second connecting plate (14); the first connecting plate (13) is rotatably connected to the second connecting plate (14) via a connecting pin (15).

4. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 1, characterized in that: The cross section of the arc-shaped slide groove (7) is a T-shaped structure, and correspondingly, the cross section of the arc-shaped sliding block (8) is a T-shaped structure that matches the arc-shaped slide groove (7).

5. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 1, characterized in that: The limiting mechanism comprises screw rods (16) respectively located on both sides of the support seat (6), the screw rods (16) being threadedly connected to the support seat (6), and one end of the screw rod (16) pressing against the side surface of the arch upper support beam (10).

6. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 5, characterized in that: One end of the screw rod (16) is provided with a ball head (17) which is pressed against the arch upper supporting cross beam (10).

7. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 1, characterized in that: The number of the adaptive leveling mechanisms is two, and the two adaptive leveling mechanisms are respectively located on two sides of the top surface of the box-shaped main arch ring (2).

8. An adaptive anchoring device on an arch for replacing slings of a box-type arch bridge according to any one of claims 1 to 7, characterized in that: Tensioning mechanisms are respectively provided at both ends of the arch support beam (10), and the tensioning mechanisms include a tensioning jack (18) located at the top of the arch support beam (10), and the tensioning jack (18) is provided with a temporary sling (19) for lifting the bridge deck beam (9).

9. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 8, characterized in that: An under-arch support beam (20) is arranged between two temporary suspension cables (19) of the same upper-arch support beam (10), and a supporting longitudinal beam (21) for supporting the bridge deck beam (9) is arranged between the two under-arch support beams (20).

10. The self-adaptive anchoring device on an arch used for replacing the sling of a box-type arch bridge according to claim 9, characterized in that: A second tensioning end anchor (22) for anchoring the temporary sling (19) is provided at the top of the tensioning jack (18), and correspondingly, a second fixed end anchor (23) for anchoring the temporary sling (19) is provided at the bottom of the arch support beam (20).

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