Bridge synchronous jacking construction device and method

Abstract

The invention discloses a bridge synchronous jacking construction device, which belongs to the technical field of bridge engineering and comprises a pushing seat fixedly connected with the top of a bridge pier, a sliding seat is slidably connected onto the pushing seat, a pushing jack is fixedly connected onto the pushing seat, and one end, far away from the pushing seat, of the pushing jack is abutted against the sliding seat. The sliding seat is fixedly connected with a jacking jack, and the end, away from the sliding seat, of the jacking jack abuts against the bottom face of the beam body so that the beam body can be jacked. The invention further discloses a bridge synchronous jacking construction method. According to the invention, on the premise that the bridge is not intersected continuously, the work of resetting the beam body and replacing the support is completed, so that not only is the traffic inconvenience avoided, but also the original beam body structure is not damaged, the maintenance efficiency is greatly improved, and the construction difficulty is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a bridge synchronous jacking construction device and method. Background Art

[0002] At present, bridges generally refer to structures built on rivers, lakes and seas to enable vehicles and pedestrians to pass smoothly. To adapt to the current transportation industry, bridges are also extended to buildings built across mountain streams, poor geology or to meet other transportation needs to make passage more convenient. However, for the maintenance and replacement of bridge bearings, the traditional solution is to disconnect the bridge and then replace the bridge bearings during the disconnection period. In addition, the deviation repair of the beam body will also damage the original beam structure.

[0003] Therefore, it is urgent to design a bridge synchronous jacking construction device and method to solve the above-mentioned problems of disconnection and damage to the beam structure during replacement of bridge supports. Summary of the invention

[0004] In order to solve the technical problems of disconnection and damage to the beam structure during replacement of bridge bearings mentioned in the background technology, a bridge synchronous jacking construction device and method are provided to solve the above problems.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the bridge synchronous jacking construction device and method of the present invention is as follows: A synchronous jacking construction device for a bridge comprises a jacking seat fixedly connected to the top of a pier, a sliding seat slidably connected to the jacking seat, a jacking jack fixedly connected to the jacking seat, an end of the jacking jack away from the jacking seat abuts against the sliding seat so that the sliding seat can be driven to slide relative to the jacking seat by the jacking jack, a jacking jack fixedly connected to the sliding seat, and an end of the jacking jack away from the sliding seat abuts against the bottom surface of a beam body so as to lift the beam body.

[0006] Furthermore, the sliding seat is located above the pushing seat, a sliding layer is provided between the pushing seat and the sliding seat, and the pushing seat and the sliding seat are slidably connected via the sliding layer.

[0007] Furthermore, the sliding layer comprises two layers of high-strength polyethylene plates, and silicone grease oil for lubrication is provided between the two layers of high-strength polyethylene plates.

[0008] Furthermore, evenly spaced grooves are provided between the two layers of high-strength polyethylene plates to preserve silicone grease.

[0009] Furthermore, a base plate is fixedly connected to the push seat, the base of the push jack is fixedly connected to the base plate, and a push plate is fixedly connected to the sliding seat, and the push plate abuts against the piston end of the push jack.

[0010] Furthermore, the base plate is arranged in parallel with the push plate.

[0011] Another object of the present invention is to provide a bridge synchronous jacking construction method using the bridge synchronous jacking construction device, comprising the following steps: S1. Place two sets of bridge synchronous jacking construction devices on both sides of the support respectively, and set beam limit devices; S2, drive the lifting jack to synchronously lift the beam to the first lifting height and maintain the lifting pressure; S3, drive the push jack to push the beam until the bolt holes at the support are reset and aligned, and maintain the push pressure; S4, driving the lifting jack to synchronously lift the beam to the second lifting height and maintain the lifting pressure; S5. Replace the support.

[0012] Further, in S1, the two sets of bridge synchronous jacking construction devices are connected through a synchronous control system, so that the jacking jacks on the two sets of bridge synchronous jacking construction devices are lifted synchronously, and the pushing jacks on the two sets of bridge synchronous jacking construction devices are pushed synchronously.

[0013] Furthermore, the beam limiting device is configured to laterally limit the beam by arranging channel steels extending toward the construction beam on both sides of the beams adjacent to the construction beams.

[0014] Furthermore, the first lifting height is 0.5 cm, and the second lifting height is 1 cm.

[0015] The bridge synchronous jacking construction device and method of the present invention have the following advantages: The present invention can complete the restoration of the beam and the replacement of the supports under the premise that the bridge is not broken, which not only avoids traffic inconvenience but also does not damage the original beam structure, greatly improves the maintenance efficiency and reduces the construction difficulty. By setting the limit device, lateral deviation and over-pushing of the beam during the pushing process are avoided, thereby ensuring the safety of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the synchronous jacking construction device for bridges of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure of the high-strength polyethylene plate of the present invention.

[0018] Figure 3 The present invention is a flow chart of the synchronous jacking construction method for a bridge.

[0019] Figure 4 It is a schematic diagram of the limiting device of the present invention.

[0020] Explanation of markings in the figure: 1. Beam; 2. Pier; 3. Push seat; 301. Base plate; 4. Sliding seat; 401. Push plate; 5. Push jack; 6. Lifting jack; 7. Sliding layer; 701. High-strength polyethylene sheet; 702. Groove; 8. Channel steel; 9. Support. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0023] Please refer to the attached Figure 1 To Attachment Figure 4 The invention describes a bridge synchronous jacking construction device and method.

[0024] The traditional bridge maintenance solution is to disconnect the bridge and then replace the bridge bearings 9 during the disconnection period. In addition, the offset maintenance of the beam body 1 will also destroy the original beam body 1 structure.

[0025] Therefore, the present invention provides a bridge synchronous jacking construction device, such as Figure 1 As shown, it includes a jacking seat 3 fixedly connected to the top of the pier 2, a sliding seat 4 slidably connected to the jacking seat 3, a jacking jack 5 fixedly connected to the jacking seat 3, an end of the jacking jack 5 away from the jacking seat 3 abuts against the sliding seat 4, so that the sliding seat 4 is driven to slide relative to the jacking seat 3 by the jacking jack 5, and a lifting jack 6 is fixedly connected to the sliding seat 4, and an end of the lifting jack 6 away from the sliding seat 4 abuts against the bottom surface of the beam body 1 to lift the beam body 1. Specifically, the lifting jack 6 lifts the beam body 1 to form a temporary support for the beam body 1, and the jacking jack 5 is used to reset the beam body 1, and the relative positions of the offset beam body 1 and the support 9 are adjusted to facilitate the removal of the damaged support 9.

[0026] The sliding seat 4 is located above the pushing seat 3 . A sliding layer 7 is provided between the pushing seat 3 and the sliding seat 4 . The pushing seat 3 and the sliding seat 4 are slidingly connected via the sliding layer 7 .

[0027] The sliding layer 7 includes two layers of high-strength polyethylene plates 701, which are stacked and silicone grease is provided between the two layers of high-strength polyethylene plates 701 for lubrication to achieve relative sliding between the sliding seat 4 and the push seat 3. It should be noted that, according to actual conditions, three or more layers of high-strength polyethylene plates 701 can be used, and silicone grease is provided between the high-strength polyethylene plates 701 for lubrication to achieve a sliding connection between the push seat 3 and the sliding seat 4.

[0028] As a preferred example, Figure 2 As shown, evenly spaced grooves 702 are provided between the two layers of high-strength polyethylene plates 701 to preserve silicone grease. Optionally, the spacing between the grooves 702 is set to 8 cm*10 cm to retain as much silicone grease as possible between the two layers of high-strength polyethylene plates 701.

[0029] Optionally, a base plate 301 is fixedly connected to the push seat 3 , the base of the push jack 5 is fixedly connected to the base plate 301 , a push plate 401 is fixedly connected to the sliding seat 4 , and the push plate 401 abuts against the piston end of the push jack 5 .

[0030] Preferably, the base plate 301 and the push plate 401 are arranged in parallel to facilitate the push jack 5 to push. Optionally, in order to enable the push jack 5 to push horizontally, the base plate 301 and the push plate 401 are both arranged as vertical plates.

[0031] A bridge synchronous jacking construction method, such as Figure 3 As shown, the following steps are included: S1. Place two sets of synchronous bridge lifting construction devices on both sides of the support 9, and set a limit device for the beam body 1; specifically, three lifting jacks 6 and one pushing jack 5 are set on one set of synchronous bridge lifting construction devices, and the two sets of synchronous bridge lifting construction devices are connected through a synchronous control system, so that the lifting jacks 6 on the two sets of synchronous bridge lifting construction devices are lifted synchronously, and the pushing jacks 5 on the two sets of synchronous bridge lifting construction devices are pushed synchronously; Figure 4 As shown, the beam body 1 limiting device is provided with channel steels 8 extending toward the construction beam body 1 on both sides of the adjacent beam body of the construction beam body 1, so as to limit the construction beam body 1 laterally.

[0032] S2, drive the lifting jack 6 to synchronously lift the beam body 1 to the first lifting height, and maintain the lifting pressure; the first lifting height is 0.5 cm, so that the beam body 1 and the support 9 are vacated.

[0033] S3, driving the pushing jack 5 to push the beam body 1 until the bolt holes at the support 9 are reset and aligned, maintaining the pushing pressure, thereby achieving the reset of the beam body 1.

[0034] S4. Drive the lifting jack 6 to synchronously lift the beam body 1 to the second lifting height and maintain the lifting pressure; the second lifting height is 1 cm to achieve continuous replacement of the supports 9. In order to prevent the uneven bottom surface of the beam body 1 from affecting the force of the lifting jack 6, a steel plate can be inserted between the output end of the lifting jack 6 and the uneven part of the bottom surface of the beam body 1 for leveling to ensure that each lifting jack 6 is evenly stressed.

[0035] S5. Replace the support 9. Specifically, take out the bolts of the old support 9, and then manually and with a fall chain, place the old support 9 on the bracket in front of the crane, and then use the crane to lift it to the ground, clean up the debris and bolt holes on the pier top, use epoxy mortar to level the uneven pier top, measure the bolt hole distances between the pier top and the new support 9, ensure that the installation direction of the new support 9 is correct, use a crane to place the new support 9 on the crane bracket, and then manually and with a fall chain, install the new support 9 in place, install the bolts, release the constraints of the new support 9, and after all the new supports 9 are replaced, inject high-strength structural adhesive between the top surface of the new support 9 and the beam body 1.

[0036] The present invention can complete the resetting of the beam body 1 and the replacement of the support 9 under the premise that the bridge is not broken, which not only avoids traffic inconvenience, but also does not damage the original structure of the beam body 1, greatly improves the maintenance efficiency, reduces the construction difficulty, and avoids lateral deviation and over-pushing of the beam body 1 during the pushing process by setting a limit device, thereby ensuring the safety of the construction.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bridge synchronous jacking construction device, characterized in that: It includes a jacking seat fixedly connected to the top of the pier, a sliding seat slidably connected to the jacking seat, a jacking jack fixedly connected to the jacking seat, an end of the jacking jack away from the jacking seat abuts against the sliding seat, so that the sliding seat can be driven to slide relative to the jacking seat by the jacking jack, a lifting jack fixedly connected to the sliding seat, and an end of the lifting jack away from the sliding seat abuts against the bottom surface of the beam body to lift the beam body.

2. The bridge synchronous jacking construction device according to claim 1 is characterized in that: The sliding seat is located above the pushing seat, a sliding layer is arranged between the pushing seat and the sliding seat, and the pushing seat and the sliding seat are slidably connected through the sliding layer.

3. The bridge synchronous jacking construction device according to claim 2 is characterized in that: The sliding layer comprises two layers of high-strength polyethylene plates, and silicone grease oil for lubrication is arranged between the two layers of high-strength polyethylene plates.

4. The synchronous jacking construction device for bridge according to claim 3 is characterized in that: Evenly spaced grooves are provided between the two layers of high-strength polyethylene sheets to preserve silicone grease.

5. The synchronous jacking construction device for bridge according to claim 1 is characterized in that: The push seat is fixedly connected with a base plate, the base of the push jack is fixedly connected with the base plate, the sliding seat is fixedly connected with a push plate, and the push plate abuts against the piston end of the push jack.

6. The synchronous jacking construction device for bridge according to claim 5 is characterized in that: The base plate is arranged parallel to the push plate.

7. A bridge synchronous jacking construction method, using the bridge synchronous jacking construction device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Place two sets of bridge synchronous jacking construction devices on both sides of the support respectively, and set beam limit devices; S2, drive the lifting jack to synchronously lift the beam to the first lifting height and maintain the lifting pressure; S3, drive the push jack to push the beam until the bolt holes at the support are reset and aligned, and maintain the push pressure; S4, driving the lifting jack to synchronously lift the beam to the second lifting height and maintain the lifting pressure; S5. Replace the support.

8. The bridge synchronous jacking construction method according to claim 7 is characterized in that: In S1, two sets of synchronous bridge jacking construction devices are connected through a synchronous control system, so that the lifting jacks on the two sets of synchronous bridge jacking construction devices are lifted synchronously, and the pushing jacks on the two sets of synchronous bridge jacking construction devices are pushed synchronously.

9. The bridge synchronous jacking construction method according to claim 7, characterized in that: In S1, the beam limiting device is configured to limit the beam laterally by arranging channel steels extending toward the construction beam on both sides of the beam adjacent to the construction beam.

10. The synchronous jacking construction method for a bridge according to claim 7, characterized in that: The first lifting height is 0.5 cm, and the second lifting height is 1 cm.

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