High-pier deviation correction device for highway high-pier bridge construction and construction method thereof

Abstract

This invention provides a high-pier deviation correction device and its construction method for highway high-pier bridge construction. It solves the problem that during foundation excavation, the temporary support structure of high-pier bridges is easily affected by the excavated foundation, causing local deviation and leading to secondary displacement of the pier. In use, the invention utilizes the coordinated operation of a lifting mechanism, steel strand, and lifting clamping device. The tensioned steel strand not only provides lifting force to the pier by clamping two arc-shaped clamps fixed to it, allowing the pier to be suspended without relying on pier supports or ground support, thus providing a construction basis for pier support replacement, but also further tightens and fixes the two arc-shaped clamps to the pier, preventing the bolts on the arc-shaped clamps from loosening under high pressure. During pier support adjustment and replacement, the anti-deviation support device provides resistance to deviation, preventing the pier from sliding and deviating.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a high pier deviation correction device and its construction method for high pier bridge construction on highways. Background Technology

[0002] Highway bridges are prone to problems such as pier misalignment and bearing damage during their service life, thus requiring timely correction of pier misalignment. Pier misalignment can be corrected by directly reversing the pier's direction or by replacing the pier bearing; both methods require the removal of the original pier bearing.

[0003] During the dismantling of existing pier supports, the current practice is to erect diagonal bracing around the pier as temporary support, and then excavate the original support foundation. However, after the foundation is excavated, the temporary support structure of high-pier bridges is prone to localized tilting due to the excavation, which can lead to secondary displacement of the pier and make the pier correction work even more difficult. Summary of the Invention

[0004] To address the problem in the background art where the temporary support structure of high-pier bridges is easily affected by the excavation of the foundation, resulting in local deviation and subsequent secondary displacement of the pier, this invention proposes a high-pier deviation correction device and its construction method for highway high-pier bridge construction.

[0005] The technical solution of the present invention is: a high pier deviation correction device for highway high pier bridge construction, including a lifting mechanism and a lifting clamping device. The lifting clamping device is detachably and fixedly installed on the pier. The lifting clamping device and the lifting mechanism are connected by steel strands. The lifting mechanism is fixed on the ground. The lifting mechanism can lift the pier in the air through the steel strands and the lifting clamping device.

[0006] Anti-skew support devices are installed on the ground around the pier. The anti-skew support devices include an outer support ring and an inner support ring. The inner support ring is located inside the outer support ring. The outer support ring and the inner support ring are arranged in concentric circles. The inner support ring can be detachably and fixedly sleeved on the pier. The inner support ring is located below the lifting clamping device. Multiple circumferentially spaced support rods are connected between the inner support ring and the outer support ring.

[0007] The outer support ring is equipped with multiple circumferentially spaced anchor rods that extend vertically and whose lower ends are anchored in the ground.

[0008] Preferably, the support rod is a telescopic rod structure with adjustable length.

[0009] Preferably, the support rod includes a first telescopic device and a connecting rod. One end of the connecting rod is fixedly connected to the outer side of the inner support ring, the other end of the connecting rod is fixedly connected to one end of the first telescopic device, and the other end of the first telescopic device is fixedly connected to the inner side of the outer support ring.

[0010] Preferably, the outer support ring has multiple arc-shaped rods that can be spliced ​​together, the ends of two adjacent arc-shaped rods can be detachably fixedly connected, and multiple anchor holes are provided on the arc-shaped rods that are spaced apart along their circumference and are open from top to bottom, with the anchor rods movably passing through the anchor holes.

[0011] Preferably, the inner support ring is a clamp structure made of rigid material.

[0012] Preferably, the inner support ring includes multiple circumferentially spaced arc-shaped plates, each arc-shaped plate corresponding to and fixedly connected to a support rod, and adjacent arc-shaped plates being detachably fixedly connected.

[0013] Preferably, the lifting and clamping device includes two arc-shaped clamps arranged in a mirror image on the left and right, and the two arc-shaped clamps are clamped on the pier column on the left and right sides;

[0014] The ends of the arc-shaped clamping plates are fixed with second wing plates. The second wing plates have second screw holes that are open to the left and right. The second screw holes of the two adjacent second wing plates are connected together by a second fixing bolt. The second fixing bolt is used to fix the two arc-shaped clamping plates to the pier.

[0015] Preferably, the second wing plate is provided with multiple rope-threading holes that are spaced vertically and horizontally and are transparent.

[0016] A support frame extending upwards is fixedly mounted on the arc-shaped clamping plate, and a vertically arranged fixed pulley is rotatably mounted on the support frame, with the bottom of the fixed pulley higher than the top of the arc-shaped clamping plate;

[0017] The hoisting mechanism includes two winches installed on the left and right sides of the pier. The winches are mounted on a frame, which is fixed to the ground. The frame is detachably and fixedly connected to the outer support ring.

[0018] The middle part of the steel strand spirals through multiple rope holes from bottom to top to wind around the outside of two arc-shaped clamps. The left and right ends of the steel strand pass over the fixed pulleys on the left and right sides respectively and are fixedly connected to the left and right winches.

[0019] Preferably, the bottom of the frame is detachably and fixedly connected to four rectangular buried poles, which extend downwards. A horizontal grid is detachably connected between the buried poles on the left and right sides, and both the buried poles and the grid are buried in the ground.

[0020] The construction method of the high pier deviation correction device for highway high pier bridge construction includes the following steps: S1~ Clean the ground around the pier;

[0021] S2~ Install splicing arc-shaped plates at the lower part of the pier near the pier support to form an inner support ring, which is then tightened onto the pier.

[0022] S3~ Install support rods on the inner support ring, splice and install the outer support ring on the outside of the inner support ring, adjust the length of the support rods, and fix the other end of the support rods to the outer support ring;

[0023] S4~ Insert the anchor rod into the anchor hole of the outer support ring and drive the lower end of the anchor rod into the ground;

[0024] S5~Install the lifting clamping device: Fix the two arc-shaped clamps to the pier with bolts to form a lifting clamping device;

[0025] S6~ Install the hoisting mechanism: Bury ground poles and grids in the ground, so that the upper end of the ground poles protrudes above the ground. Fix a frame with a winch on the top of the ground poles and fix the frame to the outer support ring.

[0026] S7 ~ Connect the hoisting mechanism and the hoisting clamping device: The middle part of the steel strand is spirally passed through multiple rope holes from bottom to top to be wound around the outside of the two arc-shaped clamps. The left and right ends of the steel strand are respectively passed around the fixed pulleys on the left and right sides and then fixedly connected to the left and right winches.

[0027] S8~Activate the lifting mechanism to put the steel strand in a taut state; the taut steel strand further tightens and fixes the two arc-shaped clamps to the pier, and provides lifting force to the pier through the two arc-shaped clamps, so that the pier can be suspended in the air without relying on the support of the pier support and the ground;

[0028] S9~ Excavate the ground around the pier support to form a foundation pit, so that the support is suspended in the air. Level or replace the pier support in the foundation pit.

[0029] After the S10 support is leveled or replaced, the excavated foundation pit is backfilled and restored.

[0030] S11~Removal: Sequentially remove the lifting clamping device, lifting mechanism, and anti-skew support device, and restore the ground.

[0031] Advantages of this invention: When in use, through the coordinated operation of the lifting mechanism, steel strand, and lifting clamping device, the tensioned steel strand not only provides lifting force to the pier by clamping and fixing two arc-shaped clamps on the pier, allowing the pier to be suspended in the air without relying on the support of the pier support and the ground, thus providing a construction basis for the replacement of the pier support, but also further tightens and fixes the two arc-shaped clamps to the pier, preventing the bolts on the arc-shaped clamps from loosening under greater pressure.

[0032] When adjusting or replacing the pier supports while excavating the ground below them or when they are suspended in the pit, the anti-deviation support device provides resistance to deviation, preventing the piers from sliding or deviating. The anti-deviation support device is a ring-shaped structure with multiple anchor rods driven into the ground on the outer ring. This ensures that even if the soil around an anchor rod becomes loose, the anchor rods in other areas can still transmit force to that location through the ring-shaped outer ring for reinforcement, providing construction workers with time for emergency reinforcement and maintenance. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the main structure of Example 1;

[0035] Figure 2 for Figure 1 A partial structural diagram of the connection between the lifting clamping device and the pier column;

[0036] Figure 3 for Figure 1 A top-view structural diagram of the anti-skew support device.

[0037] Figure 4 for Figure 1 A top-view structural diagram of the grid in the image;

[0038] In the diagram, 1. Ground, 2. Pier support, 3. Pier, 4. Outer support ring, 401. Arc rod, 402. Connector, 403. Anchor hole, 5. Inner support ring, 501. Arc plate, 502. First wing plate, 6. First telescopic device, 7. Connecting rod, 8. Anchor rod, 9. Frame, 10. Winch, 12. Arc clamp, 13. Second wing plate, 14. Support frame, 15. Fixed pulley, 16. Steel strand, 17. Buried pole, 18. Connector, 19. Grid, 1901. Crossbar. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1: As Figure 1 As shown, the high pier deviation correction device for highway high pier bridge construction includes a lifting mechanism and a lifting clamping device. The lifting clamping device is detachably and fixedly installed on the pier column 3. The lifting clamping device and the lifting mechanism are connected by a steel strand 20. The lifting mechanism is fixed on the ground. The lifting mechanism can lift the pier column 3 into the air through the steel strand 20 and the lifting clamping device.

[0041] Specifically, such as Figure 1 and Figure 2 As shown, the lifting and clamping device includes two mirror-symmetrically arranged arc-shaped clamping plates 12, which are clamped on the pier 3. The ends of the arc-shaped clamping plates 12 are fixed with second wing plates 13, which have second through holes on the left and right. The second fixing bolts are inserted into the second holes of the two adjacent second wing plates 13. The second fixing bolts are used to fix the two arc-shaped clamping plates 12 to the pier 3.

[0042] The second wing plate 13 is also provided with multiple rope holes that are spaced vertically and open horizontally; a support frame 14 that extends upward is fixed on the arc-shaped clamp plate 12, and a vertically arranged fixed pulley 15 is rotatably mounted on the support frame 14, with the bottom of the fixed pulley 15 being higher than the top of the arc-shaped clamp plate 12.

[0043] The hoisting mechanism includes two winches 10 located on the left and right sides of the pier 3, with the winches 10 mounted on a frame 9. Four rectangular buried poles 17 are detachably bolted to the bottom of the frame 9. The buried poles 17 extend downwards, and two vertically spaced connectors 18 are fixed to each buried pole 17. The connectors 18 are channel steel structures with downward-facing openings. A horizontally arranged grid 19 is detachably connected between the left and right rows of buried poles 17. Specifically, as shown... Figure 4 As shown, the grid 19 includes a horizontal bar 1901 extending in the left-right direction. The end of the horizontal bar 1901 is movably inserted into the connector 18. Both the buried pole 17 and the grid 19 are buried in the ground 1. The buried pole 17 and the grid 19 are used to enhance the anti-tilt capability of the frame 9.

[0044] The middle part of the steel strand 16 spirals through multiple rope holes from bottom to top to wind around the outside of the two arc-shaped clamps 12. The left and right ends of the steel strand 16 pass over the fixed pulleys 15 on the left and right sides respectively and are fixedly connected to the left and right winches 10.

[0045] like Figure 1 and Figure 3 As shown, anti-skew support devices are provided on the ground 1 around the pier 3. The anti-skew support devices include an outer support ring 4 and an inner support ring 5. The inner support ring 5 is located inside the outer support ring 4, and the outer support ring 4 and the inner support ring 5 are arranged in concentric circles.

[0046] like Figure 1 He Ru Figure 3 As shown, the outer support ring 4 has multiple arc-shaped rods 401 that can be spliced ​​together. The ends of two adjacent arc-shaped rods 401 are fixedly provided with connectors 402. The connectors 402 of two adjacent arc-shaped rods 401 can be lapped together. The two lapped connectors 402 are fixedly connected by a third bolt passing through them.

[0047] The arc-shaped rod 401 has multiple anchor holes 403 that are spaced apart along its circumference and are open from top to bottom. Anchor rods 8 are inserted into the anchor holes 403. The anchor rods 8 extend in the vertical direction and the lower end of the anchor rods 8 is anchored in the ground 1.

[0048] The frame 9 is detachably fixed to the outer support ring 4 by bolts, so that the buried pole 17 and the grid 19 can provide additional anti-tilt capability for the anti-tilt support device through the frame 9.

[0049] In this embodiment, the inner support ring 5 is a clamp structure made of a rigid material. Specifically, as shown... Figure 3 As shown, the inner support ring 5 includes multiple circumferentially spaced arc-shaped plates 501. The ends of the arc-shaped plates 501 are fixedly provided with first wing plates 502. The first wing plates 502 are provided with first screw holes that are open to the left and right. The two first wing plates 502 spliced ​​on the left and right are fixedly connected by first bolts passing through the two first screw holes, so that the inner support ring 5 can be detachably and fixedly sleeved on the pier column 3. The inner support ring 5 is located below the lifting clamping device.

[0050] Multiple circumferentially spaced support rods connect the inner support ring 5 and the outer support ring 4. The arc-shaped plate 501 corresponds to and is fixedly connected to each support rod. In this embodiment, the support rods are adjustable telescopic rod structures. Figure 1 and Figure 3 As shown, the support rod includes a first telescopic device 6 and a connecting rod 7. One end of the connecting rod 7 is fixedly connected to the outer side of the inner support ring 5, and the other end of the connecting rod 7 is fixedly connected to one end of the first telescopic device 6. The other end of the first telescopic device 6 is fixedly connected to the inner side of the outer support ring 4. In this embodiment, the first telescopic device 6 is a hydraulic cylinder. In other embodiments, the first telescopic device 6 can also be a telescopic mechanism such as a pneumatic cylinder.

[0051] The construction method of the high pier deviation correction device for highway high pier bridge construction includes the following steps: S1~ Clean the ground around the pier column 3.

[0052] S2~ An arc-shaped plate 501 is installed on the lower part of the pier 3 near the pier support 2 by the first bolt to form an inner support ring 5, which is then tightened on the pier 3.

[0053] S3~ Install support rods on the inner support ring 5, splice and install the outer support ring 4 on the outside of the inner support ring 5, adjust the length of the first telescopic device 6 of the support rods, and fix the other end of the support rods to the outer support ring 4 with bolts.

[0054] S4~ Insert the anchor rod 8 into the anchor hole 403 of the outer support ring 4, and drive the lower end of the anchor rod 8 into the ground 1.

[0055] S5~Install the lifting clamping device: Fix the two arc-shaped clamps 12 to the pier column 3 with bolts to form a lifting clamping device.

[0056] S6~ Install the hoisting mechanism: Bury the buried pole 17 and grid 19 in the ground, so that the upper end of the buried pole 17 protrudes from the ground 1. Fix the frame 9 with the winch 10 on the top of the buried pole 17 and fix the frame 9 to the outer support ring 4 with bolts.

[0057] S7 ~ Connect the hoisting mechanism and the hoisting clamping device: The middle part of the steel strand 16 is spirally passed through multiple rope holes from bottom to top to wrap around the outside of the two arc-shaped clamps 12. The left and right ends of the steel strand 16 are respectively wrapped around the fixed pulleys 15 on the left and right sides and then tied and fixedly connected to the left and right winches 10.

[0058] S8~ Start the lifting mechanism to put the steel strand 16 in a taut state; the taut steel strand 16 further tightens and fixes the two arc-shaped clamps 12 to the pier 3, and provides lifting force to the pier 3 through the two arc-shaped clamps 12, so that the pier 3 can be suspended in the air without relying on the support of the pier support 2 and the ground.

[0059] S9~ Excavate the ground 1 around the pier support 2 to form a foundation pit, so that the support 2 is suspended in the air, and level or replace the pier support 2 in the foundation pit.

[0060] After the S10 support 2 is leveled or replaced, the excavated foundation pit is backfilled and restored.

[0061] S11~Removal: Sequentially remove the lifting clamping device, lifting mechanism, and anti-skew support device, and restore the ground 1.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high pier misalignment correction device for highway high pier bridge construction, characterized in that: It includes a lifting mechanism and a lifting clamping device. The lifting clamping device is detachably fixed on the pier (3). The lifting clamping device is connected to the lifting mechanism through a steel strand (16). The lifting mechanism is fixed on the ground. The lifting mechanism can lift the pier (3) in the air through the steel strand (16) and the lifting clamping device. Anti-skewing support device is provided on the ground (1) around the pier (3). The anti-skewing support device includes an outer support ring (4) and an inner support ring (5). The inner support ring (5) is located inside the outer support ring (4). The outer support ring (4) and the inner support ring (5) are set in concentric circles. The inner support ring (5) is detachably fixed on the pier (3). The inner support ring (5) is located below the lifting clamping device. There are multiple support rods arranged in a circumferential interval between the inner support ring (5) and the outer support ring (4). The outer support ring (4) is provided with multiple circumferentially spaced anchor rods (8), which extend in the vertical direction and the lower end of the anchor rods (8) is anchored in the ground (1). The outer support ring (4) includes multiple arc-shaped rods (401) that can be spliced ​​together. The ends of two adjacent arc-shaped rods (401) can be detachably fixed. Multiple anchor holes (403) are provided on the arc-shaped rods (401) that are spaced apart along their circumference and are open from top to bottom. The anchor rod (8) is movably inserted into the anchor hole (403). The lifting clamping device includes two mirror-symmetrical arc-shaped clamps (12) on the left and right, and the two arc-shaped clamps (12) are clamped on the pier (3) on the left and right; The end of the arc-shaped clamp (12) is fixed with a second wing plate (13). The second wing plate (13) is provided with a second screw hole that is open to the left and right. The second screw holes of the two adjacent second wing plates (13) are connected together with a second fixing bolt. The second fixing bolt is used to fix the two arc-shaped clamps (12) to the pier (3). The second wing plate (13) is provided with multiple rope holes that are spaced vertically and open horizontally; A support frame (14) extending upward is fixed on the arc-shaped clamp (12), and a vertically arranged fixed pulley (15) is rotatably mounted on the support frame (14). The bottom of the fixed pulley (15) is higher than the top of the arc-shaped clamp (12). The hoisting mechanism includes two winches (10) set on the left and right sides of the pier (3). The winches (10) are set on the frame (9), the frame (9) is fixed on the ground (1), and the frame (9) is detachably and fixedly connected to the outer support ring (4). The middle part of the steel strand (16) spirals through multiple rope holes from bottom to top to wrap around the outside of the two arc-shaped clamps (12). The left and right ends of the steel strand (16) pass over the fixed pulleys (15) on the left and right sides respectively and are fixedly connected to the left and right winches (10).

2. The high pier deviation correction device for highway high pier bridge construction of claim 1, wherein: The support rods are telescopic rods with adjustable length.

3. The high pier deviation correction device for highway high pier bridge construction as described in claim 2, characterized in that: The support rod includes a first telescopic device (6) and a connecting rod (7). One end of the connecting rod (7) is fixedly connected to the outer side of the inner support ring (5), and the other end of the connecting rod (7) is fixedly connected to one end of the first telescopic device (6). The other end of the first telescopic device (6) is fixedly connected to the inner side of the outer support ring (4).

4. The high pier misalignment correction device for highway high pier bridge construction as described in claim 1, characterized in that: The inner support ring (5) is a clamp structure made of rigid material.

5. The high pier misalignment correction device for highway high pier bridge construction as described in claim 1, characterized in that: The inner support ring (5) includes multiple circumferentially spaced arc plates (501), each arc plate (501) corresponding to and fixedly connected to the support rod, and adjacent arc plates (501) being detachably fixedly connected.

6. The high pier deviation correction device for highway high pier bridge construction as described in claim 1, characterized in that: The bottom of the frame (9) is detachably fixedly connected to four rectangular buried poles (17). The buried poles (17) extend downwards, and horizontal grids (19) are detachably connected between the buried poles (17) on the left and right sides. The buried poles (17) and grids (19) are both buried in the ground (1).

7. The construction method of the high pier deviation correction device for highway high pier bridge construction as described in any one of claims 1-6, characterized in that, The steps include: S1~ Cleaning the ground around the pier (3); S2~ Install splicing arc plate (501) on the lower part of the pier (3) near the pier support (2) to form an inner support ring (5), and the inner support ring (5) is clamped on the pier (3); S3~ Install support rods on the inner support ring (5), and splice and install the outer support ring (4) on the outside of the inner support ring (5). Adjust the length of the support rods and fix the other end of the support rods to the outer support ring (4). S4~ Insert the anchor rod (8) into the anchor hole (403) of the outer support ring (4) and drive the lower end of the anchor rod (8) into the ground (1); S5~ Install the lifting clamping device: Fix the two arc-shaped clamps (12) to the pier (3) with bolts to form a lifting clamping device; S6~ Install the hoisting mechanism: Bury the buried pole (17) and grid (19) in the ground, so that the upper end of the buried pole (17) protrudes from the ground (1), and fix the frame (9) with the winch (10) on the top of the buried pole (17), and fix the frame (9) to the outer support ring (4). S7 ~ Connect the hoisting mechanism and the hoisting clamping device: The middle part of the steel strand (16) is spirally passed through multiple rope holes from bottom to top to wrap around the outside of the two arc-shaped clamps (12). The left and right ends of the steel strand (16) are respectively passed around the fixed pulleys (15) on the left and right sides and then fixedly connected to the left and right winches (10). S8~ Start the lifting mechanism to put the steel strand (16) in a taut state; the taut steel strand (16) further tightens and fixes the two arc-shaped clamps (12) to the pier (3), and provides lifting force to the pier (3) through the two arc-shaped clamps (12) so that the pier (3) can be suspended in the air without relying on the pier support (2) and the ground support; S9~ Excavate the ground (1) around the pier support (2) to form a foundation pit, so that the support (2) is suspended in the air, and level or replace the pier support (2) in the foundation pit. After the S10 support (2) is leveled or replaced, the excavated foundation pit is backfilled and restored. S11~Removal: The hoisting clamping device, hoisting mechanism, and anti-skew support device are removed in sequence, and the ground (1) is restored.

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