A bridge anchor plate weld repair device and repair method

Abstract

The present invention discloses a bridge anchor plate weld repair device, comprising a first distribution beam; the first distribution beam is hinged to the top of the anchor plate via a connecting assembly; the anchor plate is provided with an anchor pipe; the anchor pipe is provided with a stay cable; a second distribution beam is provided at the top of one side of the first distribution beam, and a fastening assembly is provided at the top of the other side of the first distribution beam; a tensioning jack is provided at the top of the second distribution beam; a steel strand is provided at the output end of the tensioning jack; the other end of the steel strand passes through the first distribution beam and is provided with a first fixing assembly; the first fixing assembly is connected to the top of the steel beam; the fastening assembly is connected to the top of the steel beam via the second fixing assembly. A bridge anchor plate weld repair method is also disclosed. The present invention transfers the load on the anchor plate to the steel beam by providing a bridge anchor plate weld repair device, thereby enabling weld repair without disassembling the stay cable, thereby effectively reducing construction costs and risks, and shortening the construction period.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and more particularly to a bridge anchor plate weld repair device and repair method. Background Art

[0002] Weld defects between anchor plates and bridge decks often occur due to various issues. The existing repair solution involves completely unloading the cable at the defective anchor plate location, repairing the anchor plate weld, and then tensioning the cable to the design load. This approach results in high construction costs, a long construction period, and significant risks.

[0003] Therefore, how to provide a bridge anchor plate weld repair device and repair method that can reduce construction costs and construction risks and shorten the construction period is one of the technical problems that urgently need to be solved in this field. Summary of the Invention

[0004] In view of this, the present invention provides a bridge anchor plate weld repair device and repair method, the purpose of which is to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A bridge anchor plate weld repair device comprises: a first distribution beam; the first distribution beam is hinged to the top of the anchor plate through a connecting assembly; an anchor pipe is provided on the anchor plate; a diagonal cable is provided on the anchor pipe; the diagonal cable is passed through the middle of the first distribution beam; a second distribution beam is provided on the top of one side of the first distribution beam, and a fastening assembly is provided on the top of the other side of the first distribution beam; a tensioning jack is provided on the top of the second distribution beam; a steel strand is provided at the output end of the tensioning jack; the other end of the steel strand passes through the first distribution beam and is provided with a first fixing assembly; the first fixing assembly is connected to the top of the steel beam; the fastening assembly is connected to the top of the steel beam through the second fixing assembly.

[0007] Preferably, the connecting assembly includes a connecting seat and a third distribution beam; the top of the connecting seat is hinged to the bottom of the first distribution beam; the top of the third distribution beam is connected to the bottom of the connecting seat, and the bottom of the third distribution beam is connected to the top of the anchor plate.

[0008] Preferably, the third distribution beam is connected to the anchor pipe via a support plate.

[0009] Preferably, the first fixing assembly includes a first lifting lug and a first anchor head; the first lifting lug is connected to the top of the steel beam; the first anchor head is hinged to the upper part of the first lifting lug; and the steel strand is connected to the top of the first anchor head.

[0010] Preferably, the fastening assembly includes a nut, a screw and a fourth distribution beam; the fourth distribution beam is arranged at the bottom of the first distribution beam; the screw is passed through the inside of the fourth distribution beam; one end of the screw is connected to the second fixing assembly; the nut is threadedly connected to the other end of the screw; and the nut is located above the fourth distribution beam.

[0011] Preferably, the second fixing assembly includes a second lifting ear and a second anchor head; the second lifting ear is connected to the top of the steel beam; the second anchor head is hinged to the upper part of the second lifting ear; and one end of the screw rod is connected to the second anchor head.

[0012] Preferably, a strain gauge is provided on the anchor plate.

[0013] A bridge anchor plate weld repair method, utilizing the bridge anchor plate weld repair device, comprises the following steps:

[0014] S1: The bridge anchor plate weld repair device is installed on the anchor plate and the steel beam. At this time, the tension F on the inclined cable is transmitted to the anchor plate through the anchor pipe, and then transmitted to the steel beam through the anchor plate;

[0015] S2: Tensioning is performed using tensioning jacks, gradually transferring the tension on the anchor plate to the bridge anchor plate weld repair device until the stress at the bottom of the anchor plate drops to 0. During this process, the tension on the inclined cable is transferred to the anchor plate through the anchor pipe, and then from the anchor plate to the first distribution beam. On one side of the first distribution beam, the tension is transferred to the first lifting lug through the steel strand and the first anchor head. On the other side of the first distribution beam, the tension is transferred to the second lifting lug through the fastening assembly and the second anchor head. The tension is then transferred to the steel beam through the first lifting lug and the second lifting lug.

[0016] S3: Repair the weld and perform weld inspection after the repair is completed;

[0017] S4: After the weld inspection is passed, the tensioning jack is unloaded and the bridge anchor plate weld repair device is removed.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The present invention transfers the load on the anchor plate to the steel beam by providing a bridge anchor plate weld repair device, so that the weld can be repaired without disassembling the inclined cable, thereby effectively reducing construction costs and construction risks and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a bridge anchor plate weld repair device according to the present invention;

[0021] Figure 2 for Figure 1 Sectional view along section line AA;

[0022] Figure 3 for Figure 1 Sectional view of the middle BB section line;

[0023] In the figure: 1. First distribution beam; 2. Anchor plate; 3. Anchor pipe; 4. Stay cable; 5. Second distribution beam; 6. Tensioning jack; 7. Steel strand; 8. Steel beam; 9. Connecting seat; 10. Third distribution beam; 11. Support plate; 12. First lifting eye; 13. First anchor head; 14. Nut; 15. Screw; 16. Fourth distribution beam; 17. Second lifting eye; 18. Second anchor head; 19. Strain gauge. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-3 As shown, the present invention provides a bridge anchor plate weld repair device, comprising: a first distribution beam 1; the first distribution beam 1 is hinged to the top of the anchor plate 2 through a connecting assembly, so that the first distribution beam 1 can rotate around the top of the anchor plate 2 at a certain angle; an anchor pipe 3 is provided in the middle of the anchor plate 2; a diagonal cable 4 is fixedly connected to the anchor pipe 3; the diagonal cable 4 is passed through the middle of the first distribution beam 1; the center line of the first distribution beam 1 coincides with the center line of the diagonal cable 4; a second distribution beam 5 is provided on the top of one side of the first distribution beam 1, and a fastening assembly is provided on the top of the other side of the first distribution beam 1; a tensioning jack 6 is provided on the top of the second distribution beam 5; a steel strand 7 is provided at the output end of the tensioning jack 6; the other end of the steel strand 7 passes through the second distribution beam 5 and the first distribution beam 1 and is connected to the first fixing assembly; the first fixing assembly is connected to the top of the steel beam 8; the fastening assembly is connected to the top of the steel beam 8 through the second fixing assembly.

[0026] The above technical solution tensions the steel strand 7 through the tensioning jack 6, so that the tension on the inclined cable 4 is transmitted to the anchor plate 2 through the anchor pipe 3, and then transmitted from the anchor plate 2 to the first distribution beam 1. One side of the first distribution beam 1 transmits the tension to the steel beam 8 through the steel strand 7 and the first fixing component, and the other side of the first distribution beam 1 transmits the tension to the steel beam 8 through the fastening component and the second fixing component. During this process, the center line of the steel strand 7 and the center line of the fastening component are parallel to the inclined cable 4 and are at the same distance from the inclined cable. When the tension of the steel strand 7 is equal to half of the tension of the inclined cable, the pressure of the first distribution beam 1 on the anchor plate 2 is equal to the tension of the inclined cable 4. The two offset each other, reducing the stress at the bottom of the anchor plate 2 to 0, so that weld repair can be carried out without disassembling the inclined cable, thereby effectively reducing construction costs and construction risks, and shortening the construction period.

[0027] In this embodiment, the connecting assembly includes a connecting seat 9 and a third distribution beam 10; the top of the connecting seat 9 is hinged to the bottom of the first distribution beam 1; the top of the third distribution beam 10 is fixedly connected to the bottom of the connecting seat 9 by bolts; the bottom of the third distribution beam 10 is connected to the anchor ring at the top of the anchor plate 2 by a reverse hook, temporarily fixing the third distribution beam 10 to facilitate installation and disassembly.

[0028] In this embodiment, the third distribution beam 10 is connected to the anchor pipe 3 via a support plate 11 , which further improves the stability of the third distribution beam.

[0029] In this embodiment, the first fixing assembly includes a first lifting ear 12 and a first anchor head 13; the first lifting ear 12 is connected to the top of the steel beam 8; the first anchor head 13 is hinged to the upper part of the first lifting ear 12, so that the first anchor head 13 can rotate around the first lifting ear 12, so as to adapt to the use requirements of anchor plates with different inclination angles; the steel strand 7 is fixedly connected to the top of the first anchor head 13 through an anchor pad.

[0030] In this embodiment, the fastening assembly includes a nut 14, a screw 15 and a fourth distribution beam 16; the fourth distribution beam 16 is arranged at the bottom of the first distribution beam 1; the screw 15 is passed through the inside of the fourth distribution beam 16; one end of the screw 15 is connected to the second fixing assembly; the nut 14 is threadedly connected to the other end of the screw 15; the nut 14 is located above the fourth distribution beam 16; when in use, the first distribution beam 1 and the second fixing assembly are fastened together by the cooperation of the nut 14 and the screw 15.

[0031] In this embodiment, a gasket is provided between the nut 14 and the fourth distribution beam 16 .

[0032] In this embodiment, the second fixing assembly includes a second lifting ear 17 and a second anchor head 18; the second lifting ear 17 is connected to the top of the steel beam 8; the second anchor head 18 is hinged to the upper part of the second lifting ear 17 to adapt to the use requirements of anchor plates with different inclination angles; one end of the screw 15 is connected to the second anchor head 18.

[0033] In this embodiment, a strain gauge 19 is provided on the anchor plate 2 for detecting stress changes at the bottom of the anchor plate 2 .

[0034] The present invention also provides a bridge anchor plate weld repair method, which utilizes the bridge anchor plate weld repair device, comprising the following steps:

[0035] S1: The bridge anchor plate weld repair device is installed on the anchor plate 2 and the steel beam 8. At this time, the tension F on the inclined cable 4 is transmitted to the anchor plate 2 through the anchor pipe 3, and then transmitted to the steel beam 8 through the anchor plate 2;

[0036] S2: Tensioning is performed by the tensioning jack 6, gradually transferring the tension force on the anchor plate 2 to the bridge anchor plate weld repair device until the stress at the bottom of the anchor plate 2 drops to 0; during this process, the tension on the inclined cable 4 is transferred to the anchor plate 2 through the anchor pipe 3, and then from the anchor plate 2 to the first distribution beam 1. On one side of the first distribution beam 1, the tension is transferred to the first lifting lug 12 through the steel strand 7 and the first anchor head 13. On the other side of the first distribution beam 1, the tension is transferred to the second lifting lug 17 through the fastening assembly and the second anchor head 18, and then transferred to the steel beam 8 through the first lifting lug 12 and the second lifting lug 17;

[0037] S3: Repair the weld and perform weld inspection after the repair is completed;

[0038] S4: After the weld inspection is passed, the tensioning jack 6 is unloaded and the bridge anchor plate weld repair device is removed.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bridge anchor plate weld repair device, characterized in that: include: A first distribution beam (1); the first distribution beam (1) is hinged to the top of the anchor plate (2) through a connecting assembly; the anchor plate (2) is provided with an anchor pipe (3); the anchor pipe (3) is provided with an inclined cable (4); the inclined cable (4) is passed through the middle of the first distribution beam (1); a second distribution beam (5) is provided at the top of one side of the first distribution beam (1), and a fastening assembly is provided at the top of the other side of the first distribution beam (1); a tensioning jack (6) is provided at the top of the second distribution beam (5); a steel strand (7) is provided at the output end of the tensioning jack (6); the other end of the steel strand (7) passes through the first distribution beam (1) and is provided with a first fixing assembly; the first fixing assembly is connected to the top of the steel beam (8); the fastening assembly is connected to the top of the steel beam (8) through the second fixing assembly; The first fixing assembly comprises a first lifting lug (12) and a first anchor head (13); the first lifting lug (12) is connected to the top of the steel beam (8); the first anchor head (13) is hinged to the upper part of the first lifting lug (12); the steel strand (7) is connected to the top of the first anchor head (13); The fastening assembly comprises a nut (14), a screw (15) and a fourth distribution beam (16); the fourth distribution beam (16) is arranged at the bottom of the first distribution beam (1); the screw (15) is passed through the interior of the fourth distribution beam (16); one end of the screw (15) is connected to the second fixing assembly; the nut (14) is threadedly connected to the other end of the screw (15); the nut (14) is located above the fourth distribution beam (16); The second fixing assembly comprises a second lifting lug (17) and a second anchor head (18); the second lifting lug (17) is connected to the top of the steel beam (8); the second anchor head (18) is hinged to the upper part of the second lifting lug (17); and one end of the screw rod (15) is connected to the second anchor head (18).

2. A bridge anchor plate weld repair device according to claim 1, characterized in that: The connection assembly comprises a connection seat (9) and a third distribution beam (10); the top of the connection seat (9) is hinged to the bottom of the first distribution beam (1); the top of the third distribution beam (10) is connected to the bottom of the connection seat (9), and the bottom of the third distribution beam (10) is connected to the top of the anchor plate (2).

3. The bridge anchor plate weld repair device according to claim 2, characterized in that: The third distribution beam (10) is connected to the anchor pipe (3) via a support plate (11).

4. A bridge anchor plate weld repair device according to claim 1, characterized in that: A strain gauge (19) is provided on the anchor plate (2).

5. A bridge anchor plate weld repair method, characterized in that: The bridge anchor plate weld repair device according to any one of claims 1 to 4 comprises the following steps: S1: The bridge anchor plate weld repair device is installed on the anchor plate (2) and the steel beam (8). At this time, the tension on the inclined cable (4) is transmitted to the anchor plate (2) through the anchor pipe (3), and then transmitted to the steel beam (8) through the anchor plate (2); S2: tensioning is performed by tensioning the tensioning jack (6), gradually transferring the tension applied to the anchor plate (2) to the bridge anchor plate weld repair device until the stress at the bottom of the anchor plate (2) is reduced to 0; during this process, the tension on the inclined cable (4) is transferred to the anchor plate (2) through the anchor pipe (3), and then transferred from the anchor plate (2) to the first distribution beam (1), and the tension is transferred to the first lifting lug (12) on one side of the first distribution beam (1) through the steel strand (7) and the first anchor head (13), and the tension is transferred to the second lifting lug (17) on the other side of the first distribution beam (1) through the fastening assembly and the second anchor head (18), and then transferred to the steel beam (8) through the first lifting lug (12) and the second lifting lug (17); S3: Repair the weld and perform weld inspection after the repair is completed; S4: After the weld inspection is passed, the tensioning jack (6) is unloaded and the bridge anchor plate weld repair device is removed.

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