Bridge deformation monitoring device

Abstract

The utility model relates to the technical field of municipal engineering measurement, in particular to a bridge deformation monitoring device which comprises a base, a bridge body monitoring assembly is arranged on the base, a fixed hanging plate of an L-shaped structure is fixedly connected to the right side of the base, and two sets of bottom plates are welded to the position, close to the lower end, of the right side face of the fixed hanging plate at intervals. By means of the design, the problems that an original bridge deformation monitoring device can only conduct single monitoring on a bridge body or a bridge pier and cannot conduct deformation monitoring on the bridge body and the bridge pier at the same time, and relevance is poor are solved. According to the utility model, the pressure change of the bridge body and the bridge pier can be monitored simultaneously through the bridge body monitoring assembly and the bridge pier monitoring assembly, so that the overall deformation condition of the bridge can be monitored, and the comprehensive, relevance and real-time monitoring of the bridge deformation can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering measurement, in particular to a bridge deformation monitoring device. Background Art

[0002] Bridges generally refer to structures erected over rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that are erected to cross mountain streams, poor geology, or meet other transportation needs to make travel more convenient. Bridges are generally composed of superstructures, substructures, supports, and ancillary structures. The superstructure, also known as the span structure, is the main structure for crossing obstacles; the substructure includes abutments, piers, and foundations; the supports are force transmission devices installed at the supporting locations of the span structure and piers or abutments; and the ancillary structures refer to the bridgehead slabs, conical slope protection, revetments, diversion projects, etc.

[0003] Bridges are important transportation infrastructure in modern cities. The stability and safety of their structures play a vital role in ensuring the smooth operation of transportation. However, during long-term use, bridges often cause a certain degree of deformation due to their own fatigue, aging, and the effects of external loads. In severe cases, the bridge structure may even become unstable and collapse. Therefore, in order to promptly discover and solve the deformation problem in bridges, effective deformation monitoring must be carried out.

[0004] The existing bridge deformation monitoring device is usually a fixed-point detection, which is fixed on the bridge. However, this monitoring device can only monitor the bridge body or the bridge pier alone, and cannot monitor the deformation of the bridge body and the bridge pier at the same time, and the correlation is poor. Therefore, developing a device that can monitor bridge deformation in real time is of great significance to ensure bridge safety. Utility Model Content

[0005] In view of the existing deficiencies, the utility model provides a bridge deformation monitoring device, which solves the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A bridge deformation monitoring device comprises a base, on which a bridge body monitoring assembly is arranged, an L-shaped fixed hanging plate is fixedly connected to the right side of the base, two groups of bottom plates are welded at intervals on the right side surface of the fixed hanging plate near the lower end, and a pier monitoring assembly is arranged on the upper side of the bottom plate.

[0008] Furthermore, the bridge body monitoring assembly includes a first pressure sensor, a hollow screw, an adjusting nut, a protective box and a cable. The protective box is fixed on the base, and a hollow screw is provided through the upper side of the interior of the protective box. Two groups of adjusting nuts are assembled on the annular surface of the hollow screw by threaded engagement, and the two groups of adjusting nuts are respectively located on the inner and outer sides of the protective box, and the upper end of the hollow screw is equipped with a first pressure sensor.

[0009] Furthermore, a plug connector is installed on the left side surface of the protective box, a cable is arranged inside the hollow screw, and one end of the cable is electrically connected to the first pressure sensor, and the other end is electrically connected to the plug connector.

[0010] Furthermore, a movable cover door that can be opened and closed is arranged on the front side of the protection box.

[0011] Furthermore, the pier monitoring assembly includes a top plate, a fixed support rod, an external thread, an extrusion head and a second pressure sensor. The second pressure sensor is fixed on two sets of bottom plates. A fixed support rod is arranged on the upper side of the second pressure sensor. An external thread is opened on the annular surface of the fixed support rod. The lower end of the fixed support rod is screwed with the extrusion head through a threaded connection. The upper end of the fixed support rod is fixed with a top plate, and the top plate is used to be fixed to the bridge body.

[0012] Furthermore, a nut is fixedly provided on the upper end of the extrusion head, and the nut is screwed and connected to the fixed support rod through a thread.

[0013] Furthermore, a limiting plate with an arc structure is fixedly provided on the left side of the bottom surface of the top plate, and limiting grooves with an arc structure are opened inside the two groups of bottom plates, and the limiting plate is inserted into the limiting groove and can slide therein.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model facilitates deformation monitoring of the bridge body position of the bridge by setting up a bridge body monitoring component. The first pressure sensor can monitor the pressure changes caused by the bridge body, and then judge whether the bridge body is deformed and the degree of deformation through the pressure changes of the first pressure sensor.

[0016] 2. The utility model provides a movable cover door on the front side of the protection box, which is convenient for workers to check the internal conditions of the protection box and to install, disassemble and adjust the hollow screw.

[0017] 3. The pier monitoring component can monitor the pier in real time, realizing accurate monitoring of the pressure change of the pier. The second pressure sensor can monitor the pressure of the extrusion head on it, and then monitor the relative position between the pier and the bridge body through the pressure change, and then judge the deformation of the pier.

[0018] 4. A nut is fixed on the upper end of the extrusion head, and the nut is screwed together with the fixed support rod through a thread. The nut provides a force point for the extrusion head to be easily adjusted, so that the staff can use tools to rotate the nut to adjust the extrusion head, so as to change the pressure of the extrusion head on the second sensor.

[0019] 5. The limit plate and limit groove provide a limit guide for the pier monitoring assembly, which ensures the verticality of the fixed support rod during installation and ensures that the extrusion head and the second pressure sensor can be accurately aligned. It also facilitates the installation of the pier monitoring group and improves installation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a front view of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the bridge body monitoring component in the utility model.

[0023] Figure 4 It is a schematic diagram of the internal structure of the protection box in the utility model.

[0024] Figure 5 It is a structural schematic diagram of the bridge pier monitoring component in the utility model.

[0025] Figure 6 It is a schematic diagram of the disassembled structure of the bridge pier monitoring component in the utility model.

[0026] In the figure: 1. Bridge monitoring assembly; 11. First pressure sensor; 12. Hollow screw; 13. Adjusting nut; 14. Protective box; 15. Plug connector; 16. Movable cover door; 17. Cable; 2. Base; 3. Fixed hanging plate; 4. Bottom plate; 5. Pier monitoring assembly; 51. Top plate; 52. Fixed support rod; 53. External thread; 54. Nut; 55. Extrusion head; 56. Limit plate; 57. Second pressure sensor; 58. Limit groove. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example:

[0029] like Figures 1 to 6 As shown, a bridge deformation monitoring device comprises a base 2, on which a bridge body monitoring component 1 is arranged, an L-shaped fixed hanging plate 3 is fixedly connected to the right side of the base 2, two groups of bottom plates 4 are welded at intervals on the right side surface of the fixed hanging plate 3 near the lower end, and a pier monitoring component 5 is arranged on the upper side of the bottom plate 4. This design solves the problem that the original bridge deformation monitoring device can only perform single-body monitoring of the bridge body or the bridge pier, and cannot perform deformation monitoring of the bridge body and the bridge pier at the same time, and the correlation is poor.

[0030] The bridge monitoring assembly 1 includes a first pressure sensor 11, a hollow screw 12, an adjusting nut 13, a protective box 14 and a cable 17. The protective box 14 is fixed on the base 2. The hollow screw 12 is provided on the upper side of the inner part of the protective box 14. Two groups of adjusting nuts 13 are assembled on the annular surface of the hollow screw 12 through threaded engagement, and the two groups of adjusting nuts 13 are respectively located on the inner and outer sides of the protective box 14. The upper end of the hollow screw 12 is equipped with a first pressure sensor 11. The design facilitates deformation monitoring of the bridge body position of the bridge through the set bridge body monitoring assembly 1. The first pressure sensor 11 can monitor the pressure changes generated by the bridge body, and then judge whether the bridge body is deformed and the degree of deformation through the pressure changes of the first pressure sensor 11.

[0031] A plug connector 15 is installed on the left side of the protective box 14, and a cable 17 is arranged inside the hollow screw 12, and one end of the cable 17 is electrically connected to the first pressure sensor 11, and the other end is electrically connected to the plug connector 15. This design can quickly connect and disconnect the first pressure sensor 11 through the plug connector 15, which is convenient for data acquisition equipment to be connected thereto. Through the plug connector 15, on-site data reading, equipment debugging or maintenance can be easily performed without complicated wiring or disassembly work.

[0032] The front side of the protection box 14 is provided with an openable and closable movable cover door 16 , which facilitates the staff to check the internal conditions of the protection box 14 and to install, disassemble and adjust the hollow screw 12 .

[0033] The pier monitoring assembly 5 includes a top plate 51, a fixed support rod 52, an external thread 53, an extrusion head 55 and a second pressure sensor 57. The second pressure sensor 57 is fixed on the two groups of bottom plates 4. A fixed support rod 52 is arranged on the upper side of the second pressure sensor 57. An external thread 53 is provided on the annular surface of the fixed support rod 52. The lower end of the fixed support rod 52 is connected to the extrusion head 55 by screwing. The upper end of the fixed support rod 52 is fixed with a top plate 51, and the top plate 51 is used to be fixed to the bridge body. The pier monitoring assembly 5 can monitor the piers in real time and realize accurate monitoring of the pressure changes of the piers. The second pressure sensor 57 can monitor the pressure of the extrusion head 55 on it, and then monitor the relative position between the pier and the bridge body through the pressure change, and then judge the deformation of the pier.

[0034] A nut 54 is fixedly disposed at the upper end of the extrusion head 55, and the nut 54 is screwed together with the fixed support rod 52 through a thread. The nut 54 provides a force application point for convenient rotation adjustment for the extrusion head 55, so that the staff can use a tool to rotate the nut 54 to rotate the extrusion head 55 to change the pressure exerted by the extrusion head 55 on the second sensor.

[0035] A limit plate 56 with an arc structure is fixedly provided on the left side of the bottom surface of the top plate 51, and a limit groove 58 with an arc structure is provided inside the two sets of bottom plates 4, and the limit plate 56 is inserted into the limit groove 58 and can slide therein. The limit plate 56 and the limit groove 58 provided play a role of limit guide for the pier monitoring assembly 5, which is convenient for ensuring the verticality of the fixed support rod 52 during installation, ensuring that the extrusion head 55 and the second pressure sensor 57 can be accurately aligned, and at the same time facilitates the installation of the pier monitoring group, improving the convenience of installation.

[0036] The working principle of the bridge deformation monitoring device is as follows: in actual use, the base 2 is first fixed to the top surface of the pier by expansion bolts, and the fixed hanging plate 3 is attached to the outer surface of the pier. Then the position of the hollow screw 12 is adjusted by two sets of adjusting nuts 13, and then the height of the first pressure sensor 11 is adjusted, so that the first pressure sensor 11 is in contact with the bottom surface of the bridge body and generates a certain pressure. Then the limit plate 56 is inserted into the limit groove 58, and the fixed support rod 52 is moved upward along the limit groove 58 through the limit plate 56, so that the top plate 51 is in contact with the bottom surface of the bridge body and fixed. Then the extrusion head 55 is adjusted by rotating the nut 54, so that the lower end of the extrusion head 55 is in contact with the second sensor and generates a certain pressure thereon. When the bridge body is deformed, the pressure generated on the first pressure sensor 11 will change. The first pressure sensor 11 converts this pressure change into an electrical signal and transmits it to the plug connector 15 through the cable 17. The data acquisition device can be conveniently connected to the cable 17 through the plug connector 15 to read the data transmitted by the first pressure sensor 11. By analyzing these data, the deformation degree and deformation trend of the bridge body can be determined. The deformation of the bridge pier will be transmitted to the top plate 51 through the bridge body, and then affect the pressure on the second pressure sensor 57. The second pressure sensor 57 converts this pressure change into an electrical signal. These electrical signals can be read by the data acquisition equipment and used to analyze the deformation of the bridge pier.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A bridge deformation monitoring device, comprising a base (2), characterized in that: A bridge monitoring assembly (1) is arranged on the base (2); a fixed hanging plate (3) of an L-shaped structure is fixedly connected to the right side of the base (2); two groups of bottom plates (4) are welded at intervals on the right side surface of the fixed hanging plate (3) near the lower end; and a bridge pier monitoring assembly (5) is arranged on the upper side of the bottom plate (4).

2. The bridge deformation monitoring device according to claim 1, characterized in that: The bridge monitoring assembly (1) comprises a first pressure sensor (11), a hollow screw (12), an adjusting nut (13), a protection box (14) and a cable (17); the protection box (14) is fixedly mounted on a base (2); a hollow screw (12) is provided through the upper side of the protection box (14); two groups of adjusting nuts (13) are assembled on the annular surface of the hollow screw (12) by screwing together, and the two groups of adjusting nuts (13) are respectively located on the inner and outer sides of the protection box (14); and the first pressure sensor (11) is assembled on the upper end of the hollow screw (12).

3. The bridge deformation monitoring device according to claim 2, characterized in that: A plug connector (15) is installed on the left side surface of the protective box (14), a cable (17) is arranged inside the hollow screw (12), and one end of the cable (17) is electrically connected to the first pressure sensor (11), and the other end is electrically connected to the plug connector (15).

4. The bridge deformation monitoring device according to claim 2, characterized in that: The front side of the protection box (14) is provided with a movable cover door (16) that can be opened and closed.

5. The bridge deformation monitoring device according to claim 1, characterized in that: The bridge pier monitoring assembly (5) comprises a top plate (51), a fixed support rod (52), an external thread (53), an extrusion head (55) and a second pressure sensor (57); the second pressure sensor (57) is fixedly mounted on two sets of bottom plates (4); a fixed support rod (52) is arranged on the upper side of the second pressure sensor (57); an external thread (53) is provided on the annular surface of the fixed support rod (52); the lower end of the fixed support rod (52) is screwed with the extrusion head (55); the upper end of the fixed support rod (52) is fixedly mounted with a top plate (51); the top plate (51) is used to be fixed to the bridge body.

6. The bridge deformation monitoring device according to claim 5, characterized in that: A nut (54) is fixedly provided at the upper end of the extrusion head (55), and the nut (54) is screwed and connected to the fixed support rod (52) via a thread.

7. The bridge deformation monitoring device according to claim 5, characterized in that: A limiting plate (56) with an arc structure is fixedly provided on the left side of the bottom surface of the top plate (51), and limiting grooves (58) with an arc structure are provided inside the two groups of bottom plates (4), and the limiting plates (56) are inserted into the limiting grooves (58) and can slide therein.

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