Bridge bearing replacement construction safety protection device

Abstract

This utility model discloses a safety protection device for bridge bearing replacement construction, relating to the field of bridge protection technology. It includes a main load-bearing frame with multiple pre-embedded rods fixed within it. The main load-bearing frame provided by this utility model achieves anchoring fixation through the pre-embedded rods, and is reinforced with transverse stiffening ribs to enhance rigidity. Its load-bearing capacity is improved compared to traditional devices, enabling stable support of temporary bridge loads and preventing bending and displacement of the load-bearing frame. The weight-reducing hole design strengthens the structure while reducing the device's self-weight, improving installation efficiency and reducing additional load pressure on the construction foundation. It solves the problems of insufficient load-bearing capacity, easy deformation, and excessive weight making installation difficult with traditional devices. Multiple sets of anti-overturning support plates on both sides form a system, increasing the lateral anti-overturning moment compared to traditional devices. This effectively mitigates lateral disturbances such as collisions with construction machinery, eliminating the risk of bridge collapse caused by device overturning. The spacing between the support plates can be adjusted according to the bridge width, adapting to bridge construction of different spans and overcoming the poor stability of traditional single-sided supports.

Description

Technical Field

[0001] This utility model relates to the field of bridge protection technology, specifically to a safety protection device for bridge bearing replacement construction. Background Technology

[0002] Traditional protective devices typically use a single welded steel structure for their main load-bearing frame.

[0003] The lack of reinforced design results in several issues. First, the absence of lateral stiffening ribs to enhance rigidity makes the device prone to bending deformation or even cracking under load due to stress concentration, making it unsuitable for the temporary support needs of large-tonnage bridges. Second, the fixing methods are rudimentary, relying heavily on simple anchor bolts. While some devices have added support structures, lightweight design was not considered, resulting in excessive overall weight. This not only increases the difficulty of hoisting and installation but may also place additional load pressure on the construction foundation. Replacement of supports is often accompanied by lateral disturbances. Furthermore, traditional protective devices generally lack targeted anti-overturning designs and simple structures, lack symmetrical anti-overturning support plates, and have insufficient lateral anti-overturning moment. The shock-absorbing components of traditional protective devices are mostly single rubber pads or spring structures. On the one hand, rubber pads are prone to fatigue and aging due to long-term pressure. On the other hand, traditional protective devices lack real-time monitoring and intelligent early warning mechanisms. Utility Model Content

[0004] In view of the existing problems with safety protection during bridge bearing replacement construction, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a safety protection device for bridge bearing replacement construction, which solves the problem that without transverse stiffening ribs to enhance rigidity, bending deformation is easily caused by stress concentration when bearing load.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The bridge bearing replacement construction safety protection device includes a main load-bearing frame, in which multiple embedded rods are fixedly installed. A support panel is fixedly installed on the top of the main load-bearing frame. A circular contact element is fixedly installed on one side of the main load-bearing frame. An elastic pad layer is fixedly installed inside the circular contact element. A honeycomb metal buffer layer, a magnetorheological damping unit, and a rubber energy storage layer are fixedly installed at the bottom of the support panel. Multiple anti-overturning support plates are fixedly installed on both sides of the main load-bearing frame. A vibration sensor is fixedly installed on the top of the magnetorheological damping unit. A strain sensor is fixedly installed on one side of the main load-bearing frame.

[0007] Preferably, the main load-bearing frame is provided with transverse stiffening ribs, and the transverse stiffening ribs are provided with weight-reducing holes.

[0008] Preferably, the magnetorheological damping unit includes a sealed cylinder and a magnetic field generating device, wherein the sealed cylinder is filled with magnetorheological fluid.

[0009] Preferably, an early warning module is fixedly installed on one side of the main load-bearing frame. The early warning module includes a data processing unit, a loudspeaker, a warning light, and a wireless transmission unit.

[0010] Furthermore, the surface of the support panel is fixedly provided with an anti-slip and wear-resistant layer.

[0011] Preferably, a connecting plate is fixedly provided between the honeycomb metal buffer layer, the magnetorheological damping unit, and the rubber energy storage layer.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model features a main load-bearing frame anchored via pre-embedded rods, enhanced rigidity with transverse stiffening ribs, resulting in increased load-bearing capacity compared to traditional devices. It stably supports temporary loads on bridges, preventing bending and displacement of the load-bearing frame. The weight-reducing hole design strengthens the structure while reducing the device's self-weight, improving installation efficiency and reducing additional load pressure on the construction foundation. This solves the problems of insufficient load-bearing capacity, easy deformation, and difficulty in installation associated with excessive weight in traditional devices. Multiple sets of anti-overturning support plates on both sides form a system, increasing the lateral anti-overturning moment compared to traditional devices. This effectively mitigates lateral disturbances such as collisions with construction machinery, eliminating the risk of bridge collapse caused by device overturning. The spacing between the support plates can be adjusted according to the bridge width, adapting to bridges of different spans and overcoming the poor stability of traditional single-sided supports.

[0013] 2. This utility model comprises a honeycomb metal buffer layer, a magnetorheological damping unit, and a rubber energy storage layer, forming a three-stage vibration reduction system. This system is far superior to traditional single rubber pads and can effectively block the transmission of vibration to the main bridge structure, avoiding damage such as concrete cracking and steel corrosion. The dynamic damping adjustment function of the magnetorheological damping unit can adapt the vibration reduction effect in real time according to the vibration intensity, ensuring both vibration reduction efficiency during strong vibrations and support flexibility during weak vibrations, improving the installation accuracy of the bearings, and reducing subsequent repair costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of part A; Figure 3 This is a three-dimensional structural diagram of the sealing cylinder of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Main load-bearing frame; 2. Embedded rod; 3. Support panel; 4. Circular contact element; 5. Elastic pad layer; 6. Honeycomb metal buffer layer; 7. Magnetorheological damping unit; 8. Rubber energy storage layer; 9. Anti-tipping support plate; 10. Vibration sensor; 11. Strain sensor; 12. Lateral stiffening rib; 13. Weight reduction hole; 14. Sealed cylinder; 15. Magnetorheological fluid; 16. Data processing unit; 17. Loudspeaker; 18. Warning light; 19. Wireless transmission unit; 20. Anti-slip and wear-resistant layer; 21. Connecting plate; 22. Magnetic field generating device. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model discloses a safety protection device for bridge bearing replacement construction.

[0019] This utility model provides, for example Figure 1-3The bridge bearing replacement construction safety protection device shown includes a main load-bearing frame 1, with multiple embedded rods 2 fixed inside the main load-bearing frame 1. A support panel 3 is fixed to the top of the main load-bearing frame 1. A circular contact element 4 is fixed to one side of the main load-bearing frame 1, with an elastic pad 5 fixed inside the circular contact element 4. A honeycomb metal buffer layer 6, a magnetorheological damping unit 7, and a rubber energy storage layer 8 are fixed to the bottom of the support panel 3. Multiple anti-overturning support plates 9 are fixed to both sides of the main load-bearing frame 1. A vibration sensor 10 is fixed to the top of the magnetorheological damping unit 7. A strain sensor 11 is fixed to one side of the main load-bearing frame 1. Before construction, the main load-bearing frame 1 is anchored to the construction foundation using the multiple embedded rods 2 inside to ensure a rigid connection between the main load-bearing frame 1 and the foundation, preventing... During the support process, displacement occurs. The transverse stiffening ribs 12 inside the main load-bearing frame 1 can enhance the overall rigidity of the structure and resist bending stress under load. At the same time, the weight-reducing holes 13 on the stiffening ribs reduce the self-weight of the device without reducing the load-bearing capacity, reducing the difficulty of hoisting and installation, and laying a stable foundation for subsequent support. After installation, the position of the main load-bearing frame 1 is adjusted so that the top support panel 3 fits tightly with the temporary support part of the bridge. The anti-slip and wear-resistant layer 20 on the surface of the support panel 3 can increase the friction with the bridge and construction equipment, preventing equipment from sliding or personnel from slipping. The circular contact part 4 on one side of the main load-bearing frame 1 fits against the side of the bridge, and the elastic pad 5 on its inner side can avoid direct friction between the rigid steel structure and the bridge concrete, reduce the wear of the bridge surface, and buffer lateral pressure. The main load-bearing frame 1 has multiple anti-overturning support plates 9 on both sides that, after unfolding, form a triangular support structure with the ground. By increasing the contact area of ​​the support, the lateral anti-overturning moment is enhanced, resisting lateral forces such as construction disturbances and wind loads, and preventing the device from overturning. Vibrations generated during construction, such as those from jack operations and machinery operation, are transmitted to the support panel 3 through the bridge, triggering the coordinated work of the multi-layer damping system. The first layer of buffer, the honeycomb metal buffer layer 6, absorbs the impact vibration energy through the elastic deformation of the honeycomb structure, reducing the transmission of vibration to the deeper structure. The second layer of dynamic damping uses vibration sensors 10 to monitor the vibration intensity in real time and transmit the data to the magnetic field generator 22 of the magnetorheological damping unit 7. The magnetic field generator 22 adjusts the magnetic field intensity according to the vibration intensity, modifying the... The viscosity of the magnetorheological fluid 15 inside the variable-seal cylinder 14 varies. When the vibration intensity is high, the magnetic field strengthens, the magnetorheological fluid 15 becomes solid, damping increases, and strong vibrations are rapidly attenuated. When the vibration intensity is low, the magnetic field weakens, the magnetorheological fluid 15 becomes liquid, damping decreases, ensuring support flexibility and achieving dynamic adaptation and vibration reduction. A third layer of energy absorption, the rubber energy storage layer 8, absorbs residual vibration energy and converts some of it into elastic potential energy for slow release, preventing vibration rebound. Simultaneously, the honeycomb metal buffer layer 6, the magnetorheological damping unit 7, and the rubber energy storage layer 8 are fixed together by a connecting plate 21, ensuring coordinated operation and preventing component misalignment. The strain sensor 11 collects stress and strain data of the main load-bearing frame 1 in real time, monitoring whether the load-bearing frame deforms due to overload.Vibration sensor 10 synchronously collects vibration parameters of the damping system to determine whether the vibration exceeds the safety threshold. Both types of sensors transmit the data in real time to the data processing unit 16 of the early warning module. The data processing unit 16 compares the real-time data with the preset safety threshold. If the data exceeds the threshold, the data processing unit 16 immediately triggers an early warning: warning light 18 illuminates, loudspeaker 17 issues a voice alarm, and simultaneously, wireless transmission unit 19 sends the warning information and real-time data to the remote monitoring terminal.

[0020] For stronger support, such as Figure 1 As shown, the main load-bearing frame 1 is provided with a transverse stiffening rib 12 inside, and a weight reduction hole 13 is provided on the transverse stiffening rib 12.

[0021] To achieve better shock absorption, such as Figure 1-3 As shown, the magnetorheological damping unit 7 includes a sealed cylinder 14 and a magnetic field generating device 22, with the sealed cylinder 14 filled with a magnetorheological fluid 15.

[0022] For the purpose of facilitating early warning, such as Figure 1-2 As shown, an early warning module is fixedly installed on one side of the main load-bearing frame 1. The early warning module includes a data processing unit 16, a loudspeaker 17, a warning light 18, and a wireless transmission unit 19.

[0023] Finally, for better slip resistance, such as Figure 1 As shown, an anti-slip and wear-resistant layer 20 is fixedly provided on the surface of the support panel 3, and a connecting plate 21 is fixedly provided between the honeycomb metal buffer layer 6, the magnetorheological damping unit 7 and the rubber energy storage layer 8.

[0024] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bridge support replacement construction safety protection device, comprising a main load-bearing frame (1), characterized in that, Multiple embedded rods (2) are fixed inside the main load-bearing frame (1). A support panel (3) is fixed on the top of the main load-bearing frame (1). A circular contact (4) is fixed on one side of the main load-bearing frame (1). An elastic pad (5) is fixed on the inner side of the circular contact (4). A honeycomb metal buffer layer (6), a magnetorheological damping unit (7), and a rubber energy storage layer (8) are fixed on the bottom of the support panel (3). Multiple anti-overturning support plates (9) are fixed on both sides of the main load-bearing frame (1). A vibration sensor (10) is fixed on the top of the magnetorheological damping unit (7). A strain sensor (11) is fixed on one side of the main load-bearing frame (1).

2. The bridge bearing replacement construction safety protection device according to claim 1, characterized in that, The main load-bearing frame (1) is provided with a transverse stiffening rib (12), and a weight-reducing hole (13) is provided on the transverse stiffening rib (12).

3. The bridge bearing replacement construction safety protection device according to claim 1, characterized in that, The magnetorheological damping unit (7) includes a sealed cylinder (14) and a magnetic field generating device (22), and the sealed cylinder (14) is filled with magnetorheological fluid (15).

4. The bridge bearing replacement construction safety protection device according to claim 1, characterized in that, A warning module is fixedly provided on one side of the main load-bearing frame (1). The warning module includes a data processing unit (16), a loudspeaker (17), a warning light (18), and a wireless transmission unit (19).

5. The bridge bearing replacement construction safety protection device according to claim 1, wherein The surface of the support panel (3) is fixedly provided with an anti-slip and wear-resistant layer (20).

6. The bridge bearing replacement construction safety shield of claim 1, wherein, A connecting plate (21) is fixedly provided between the honeycomb metal buffer layer (6), the magnetorheological damping unit (7) and the rubber energy storage layer (8).

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