Bridge jacking support structure

Abstract

The utility model provides a bridge jacking support structure which comprises a base and a hydraulic cylinder arranged above the base, and further comprises a jacking assembly arranged above the hydraulic cylinder and used for carrying out multi-point supporting on the lower portion of a bridge, and an inclination correction assembly arranged on the periphery of the base. The inclination correction assembly comprises a plurality of inclination angle sensors installed on the upper surface of the base and a downward pushing and jacking structure arranged above the base. Through cooperation of the arranged hydraulic cylinder and the jacking assembly, multi-point supporting can be formed below a bridge, the bridge load is evenly dispersed, the concrete cracking problem caused by local stress concentration is effectively avoided, through the arranged inclination correction assembly, the horizontal state of the base can be monitored in real time through an inclination angle sensor, and once the base inclines, the inclination correction assembly can correct the inclination of the base. And an operator can control the base to recover the horizontal state in time, so that stable attachment of the jacking plate and the bridge is guaranteed, and the jacking stability of the bridge is further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge jacking devices, and in particular to a bridge jacking support structure. Background Technology

[0002] In bridge engineering, jacking bearings are key equipment in the process of bridge maintenance, reinforcement or reconstruction. They are mainly used to smoothly lift the superstructure of the bridge as a whole or in sections to a predetermined height through hydraulic or mechanical jacking, so as to carry out operations such as pier heightening, bearing replacement, foundation reinforcement, bridge deck elevation adjustment, seismic performance improvement or overall bridge lifting.

[0003] Application No. 202420286972.0 relates to a bridge jacking support structure, comprising: a fixed seat with an opening on one side; a sliding groove on the lower inner side of the fixed seat, within which a jacking structure is horizontally slidably connected; a sliding seat vertically slidably connected to the inner side of the fixed seat; a top plate fixedly connected to the top surface of the sliding seat; and the output end of the jacking structure abutting against the bottom surface of the top plate. A central support structure is fixedly connected to both sides of the top surface of the fixed seat, and the central support structure engages with a rack on the side of the sliding seat. An edge support structure is provided at the corner of the top surface of the fixed seat, with its top end abutting against the bottom surface of the top plate. These structures achieve a more stable jacking operation and allow the jacking structure to be used multiple times, eliminating the need for prolonged support in one location and reducing jacking costs.

[0004] The above-mentioned solution has shortcomings in use. Due to the influence of different foundation conditions, when the fixed seat bears the bridge jacking load, the foundation soil in the weak area will settle excessively because it cannot withstand the excessive pressure, causing the corresponding area of ​​the fixed seat to sink, which will cause the fixed seat to tilt. When the fixed seat tilts, the top plate will tilt synchronously, and the top plate will not be able to form a stable fit support with the bridge below. The bridge is prone to lateral slippage or torsion, further reducing the stability of the bridge jacking. To this end, we provide a bridge jacking support structure. Utility Model Content

[0005] This utility model provides a bridge jacking support structure. When the fixed seat is located in a weak foundation area, the horizontal angle of the fixed seat can be monitored in real time. This can detect whether the fixed seat is in a horizontal state, allowing the staff to adjust the fixed seat to be horizontal in a timely manner, thereby ensuring the stability of the bridge jacking.

[0006] The purpose and effect of this utility model's bridge jacking support structure are achieved by the following specific technical means: A bridge jacking support structure includes a base and a hydraulic cylinder disposed above the base, and further includes:

[0007] The lifting assembly, positioned above the hydraulic cylinder, is used to provide multi-point support under the bridge.

[0008] The tilt correction assembly is located around the base and includes multiple tilt sensors mounted on the upper surface of the base for monitoring the horizontal angle of the base and a push-and-hold structure located above the base for leveling the tilted base.

[0009] Preferably, the lifting assembly includes a top support plate disposed above the telescopic end of the hydraulic cylinder, and the bottom surface of the top support plate is connected to the telescopic end of the hydraulic cylinder.

[0010] Preferably, the top support plate has a cross groove inside, and two sets of sliding plates are slidably connected to the inner wall of the cross groove. Each set of sliding plates has an auxiliary support plate that is flush with the upper surface of the top support plate at one end that is far away from each other.

[0011] Preferably, a fixed frame is fixedly connected to the bottom surface of the top support plate, and an electric push rod arranged in a ring is hinged to the outer surface of the fixed frame. The telescopic end of each electric push rod is hinged to the bottom surface of the auxiliary support plate.

[0012] Preferably, the inner wall of the cross groove is provided with multiple sets of limiting grooves, and the inner wall of each limiting groove is slidably connected with a limiting block. The side of each set of limiting blocks that is close to each other is connected to the outer surface of the slide plate.

[0013] Preferably, the outer surface of the fixed frame is fixedly connected with a ring of guide frames, and the inner wall of each guide frame is slidably connected with a guide plate, and the bottom end of each guide plate is connected to the upper surface of the base.

[0014] Preferably, the tilt correction component's downward push-support structure includes hanging plates arranged in a ring on the upper surface of the base by bolts. Each hanging plate has a set of hydraulic push rods hinged to its bottom surface, and the bottom end of each set of hydraulic push rods is hinged to a top plate.

[0015] Preferably, a set of L-shaped plates are fixedly connected to one side of each of the hanging plates, and a connecting frame is fitted on the outside of the bottom end of each L-shaped plate, with the bottom surface of each connecting frame connected to the upper surface of the base.

[0016] Preferably, each of the top surfaces of the suspended platform is fixedly connected to a diagonal brace, and the bottom end of each diagonal brace is connected to one side of the suspended platform.

[0017] Preferably, the bottom surface of the base is fixedly connected with annularly arranged anti-slip protrusions.

[0018] Beneficial effects:

[0019] 1. By cooperating with the hydraulic cylinders and lifting components, multiple points of support can be formed under the bridge, so that the bridge load is evenly distributed and the concrete cracking caused by local stress concentration can be effectively avoided. The tilt correction component can monitor the horizontal status of the base in real time with the tilt sensor. Once the base tilts, the operator can control the base to restore the horizontal status in time, thereby ensuring that the top plate is stably attached to the bridge and further improving the stability of the bridge lifting.

[0020] 2. Through the cooperation of the L-shaped plate and the connecting frame, when the hanging plate applies a lifting force to the base during the tilt correction process, the force transmission path formed by the L-shaped plate and the connecting frame can evenly distribute the load, further enhancing the stability effect of the hanging plate when lifting the base. Through the cooperation of the fixed frame and the electric push rod, a holding force can be applied to the auxiliary support plate, further enhancing its effect on bridge lifting. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the base of this utility model from below.

[0023] Figure 3 This is a three-dimensional structural diagram of the lifting component of this utility model.

[0024] Figure 4 This is a three-dimensional structural schematic diagram of the top sectional view of the top support plate of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the top plate of this utility model.

[0026] Figure 6 This is a three-dimensional structural diagram of the hanging plate of this utility model.

[0027] Figure 1-6 In the diagram, the correspondence between component names and drawing numbers is as follows:

[0028] 1. Base; 2. Hydraulic cylinder; 3. Lifting assembly; 301. Top support plate; 302. Cross groove; 303. Slide plate; 304. Auxiliary support plate; 305. Fixing frame; 306. Electric push rod; 307. Limiting groove; 308. Limiting block; 309. Guide frame; 310. Guide plate; 4. Tilting correction assembly; 401. Tilt sensor; 402. Hanging plate; 403. Hydraulic push rod; 404. Top plate; 405. L-shaped plate; 406. Connecting frame; 407. Slanted tie plate; 5. Anti-slip convex strip. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] First Embodiment

[0031] As attached Figure 1 Appendix Figure 3 With appendix Figure 4 As shown: A bridge jacking support structure includes a base 1 and a hydraulic cylinder 2 disposed above the base 1. A control panel is installed on the base 1, and the control panel is equipped with a PLC control system for controlling the operation of the hydraulic cylinder 2 and a photoelectric alarm.

[0032] The lifting assembly 3, positioned above the hydraulic cylinder 2, provides multi-point support for the bridge. The lifting assembly 3 includes a support plate 301 positioned above the telescopic end of the hydraulic cylinder 2. The bottom surface of the support plate 301 is connected to the telescopic end of the hydraulic cylinder 2. When the hydraulic cylinder 2 extends, it pushes the support plate 301 upwards to lift the bridge. The support plate 301 has a cross groove 302 inside. Two sets of sliding plates 303 are slidably connected to the inner wall of the cross groove 302. Each set of sliding plates 303 has an auxiliary support plate 304 fixedly connected to its farthest end, flush with the upper surface of the support plate 301. The sliding plates 303 can slide out of the cross groove 302, thereby adjusting the position of the auxiliary support plate 304. A fixed... The frame 305 has a ring of electrically driven push rods 306 hinged to its outer surface. The telescopic end of each electrically driven push rod 306 is hinged to the bottom surface of the auxiliary support plate 304. The operation of the electrically driven push rods 306 is controlled by the control panel. When the electrically driven push rods 306 extend, they push the auxiliary support plate 304 to slide. At the same time, the auxiliary support plate 304 drives the sliding plate 303 to slide out of the cross groove 302. The auxiliary support plate 304 rises synchronously with the upward movement of the top support plate 301, thereby forming multi-point support for the bridge, distributing the bridge load evenly, and effectively avoiding concrete cracking caused by local stress concentration. At the same time, the electrically driven push rods 306 can apply a holding force to the auxiliary support plate 304, further ensuring its effect on lifting the bridge.

[0033] The inner wall of the cross groove 302 has multiple sets of limiting grooves 307. Each limiting groove 307 has a limiting block 308 slidably connected to its inner wall. The side of each set of limiting blocks 308 that is close to each other is connected to the outer surface of the slide plate 303. By using the cooperation of the limiting groove 307 and the limiting block 308, the movement of the slide plate 303 can be limited, thereby preventing the slide plate 303 from leaving the cross groove 302. The outer surface of the fixed frame 305 is fixedly connected with a ring of guide frames 309. Each guide frame 309 has a guide plate 310 slidably connected to its inner wall. The bottom end of each guide plate 310 is connected to the upper surface of the base 1. By using the cooperation of the guide frame 309 and the guide plate 310, the fixed frame 305 and the top plate 301 can be stabilized, thereby ensuring their smooth lifting and lowering.

[0034] Second Embodiment

[0035] As attached Figure 1 Appendix Figure 5 With appendix Figure 6 As shown: The tilt correction component 4 is set around the base 1 and includes multiple tilt sensors 401 installed on the upper surface of the base 1 for monitoring the horizontal angle of the base 1. The tilt sensors 401 can monitor the horizontal angle of the base 1 in real time. Once the tilt of the base 1 is detected, the PLC control system on the control panel will control the photoelectric alarm to sound an alarm, so that the operator can know the horizontal status of the base 1 in time.

[0036] A downward-pushing support structure, installed above the base 1, is used to level the tilted base 1. The downward-pushing support structure of the tilt correction component 4 includes hanging plates 402 arranged in a ring on the upper surface of the base 1 by bolts. Each hanging plate 402 has a set of hydraulic push rods 403 hinged to its bottom surface. The bottom end of each set of hydraulic push rods 403 is hinged to a top plate 404. When the operator knows that the base 1 is tilted, he can use the control panel to control the extension of the hydraulic push rods 403 on the corresponding side. The hydraulic push rods 403 will push the top plate 404 downward to make it contact the foundation. As the hydraulic push rods 403 continue to extend, the hanging plates 402 will be subjected to a reaction force and lift the base 1 upward, so that the base 1 can be restored to a completely horizontal state, thereby ensuring that the support plate 301 is stably attached to the bridge, further improving the stability of the bridge lifting. When it is not necessary to correct the base 1, the bolts can be turned to remove the hanging plates 402 from the base 1.

[0037] Each hanging plate 402 has a set of L-shaped plates 405 fixedly connected to one side. Each L-shaped plate 405 has a connecting frame 406 fitted on the bottom of its outer side. The bottom surface of each connecting frame 406 is connected to the upper surface of the base 1. When the hanging plate 402 applies a lifting force to the base 1 during the tilt correction process, the force transmission path formed by the L-shaped plate 405 and the connecting frame 406 can evenly distribute the load, further enhancing the stability of the hanging plate 402 when lifting the base 1. When disassembling the hanging plate 402, the bottom end of the L-shaped plate 405 can be directly pulled out from inside the connecting frame 406. Each hanging plate 402 has a diagonal brace 407 fixedly connected to the bottom surface of its top. The bottom end of each diagonal brace 407 is connected to one side of the hanging plate 402. The diagonal brace 407 can be used to reinforce the connection between the top and the side of the hanging plate 402, further improving its stability when lifting the base 1.

[0038] Third Embodiment

[0039] As attached Figure 1 With appendix Figure 2 As shown: The bottom surface of the base 1 is fixedly connected with annularly arranged anti-slip protrusions 5. When the base 1 is placed on a hard foundation such as cement, the anti-slip protrusions 5 can prevent the base 1 from slipping, further ensuring its firmness when bearing the bridge load.

[0040] Working principle: During use, the base 1 is stabilized on the foundation under the bridge. Then, the operator controls the electric push rod 306 to extend synchronously via the control panel. When the electric push rod 306 extends, it pushes the auxiliary support plate 304 to slide. At the same time, the auxiliary support plate 304 drives the sliding plate 303 to slide out of the cross groove 302. Then, the hydraulic cylinder 2 is controlled to extend, and the hydraulic cylinder 2 pushes the supporting plate 301 upward. The supporting plate 301 drives the auxiliary support plate 304 to move upward synchronously. The supporting plate 301 and the auxiliary support plate 304 simultaneously form a support for the bridge, further improving the stability of the bridge lifting. At this time, the base 1 will bear the load. During bridge jacking, the tilt sensor 401 monitors the horizontal angle of the base 1 in real time. Once the base 1 is detected to be tilted, the control switch will activate the photoelectric alarm to issue an audible and visual alarm. The operator can then simultaneously control the hydraulic push rod 403 on the corresponding side to extend. The hydraulic push rod 403 will push the top plate 404 downward to make it contact the foundation. As the hydraulic push rod 403 continues to extend, the hanging plate 402 will be subjected to a reaction force and lift the base 1 upward, allowing the base 1 to return to a completely horizontal state. This ensures that the top plate 301 is stably attached to the bridge, further improving the stability of the bridge jacking.

Claims

1. A bridge jacking support structure, comprising a base (1) and a hydraulic cylinder (2) disposed above the base (1), characterized in that, Also includes: The lifting assembly (3) is positioned above the hydraulic cylinder (2) to provide multi-point support for the area under the bridge. The tilt correction assembly (4) is arranged around the base (1) and includes multiple tilt sensors (401) installed on the upper surface of the base (1) for monitoring the horizontal angle of the base (1) and a push-support structure arranged above the base (1) for horizontal correction of the tilted base (1).

2. The bridge jacking support structure according to claim 1, characterized in that: The lifting assembly (3) includes a top support plate (301) disposed above the telescopic end of the hydraulic cylinder (2), and the bottom surface of the top support plate (301) is connected to the telescopic end of the hydraulic cylinder (2).

3. The bridge jacking support structure according to claim 2, characterized in that: The top support plate (301) has a cross groove (302) inside. Two sets of sliding plates (303) are slidably connected to the inner wall of the cross groove (302). Each set of sliding plates (303) has an auxiliary support plate (304) that is flush with the upper surface of the top support plate (301) at one end away from each other.

4. The bridge jacking support structure according to claim 2, characterized in that: The bottom surface of the top support plate (301) is fixedly connected to a fixed frame (305), and the outer surface of the fixed frame (305) is hinged with annularly arranged electric push rods (306), the telescopic end of each electric push rod (306) being hinged to the bottom surface of the auxiliary support plate (304).

5. The bridge jacking support structure according to claim 3, characterized in that: The inner wall of the cross groove (302) is provided with multiple sets of limiting grooves (307), and each limiting groove (307) is slidably connected to a limiting block (308). The side of each set of limiting blocks (308) that is close to each other is connected to the outer surface of the slide plate (303).

6. The bridge jacking support structure according to claim 4, characterized in that: The outer surface of the fixed frame (305) is fixedly connected with a ring of guide frames (309), and the inner wall of each guide frame (309) is slidably connected with a guide plate (310), and the bottom end of each guide plate (310) is connected to the upper surface of the base (1).

7. The bridge jacking support structure according to claim 1, characterized in that: The tilt correction component (4) includes a downward push-holding structure comprising hanging plates (402) arranged in a ring on the upper surface of the base (1) by bolts. Each hanging plate (402) has a set of hydraulic push rods (403) hinged to its bottom surface, and the bottom end of each set of hydraulic push rods (403) is hinged to a top plate (404).

8. The bridge jacking support structure according to claim 7, characterized in that: Each of the hanging plates (402) has a set of L-shaped plates (405) fixedly connected to one side. Each L-shaped plate (405) has a connecting frame (406) fitted on the outside of its bottom end. The bottom surface of each connecting frame (406) is connected to the upper surface of the base (1).

9. The bridge jacking support structure according to claim 7, characterized in that: Each of the hanging plates (402) has a fixed bottom surface at the top of its top with a diagonal brace (407), and the bottom end of each diagonal brace (407) is connected to one side of the hanging plate (402).

10. The bridge jacking support structure according to claim 1, characterized in that: The bottom surface of the base (1) is fixedly connected with annularly arranged anti-slip protrusions (5).

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