Bridge deflection deformation detection device

Abstract

The utility model discloses a bridge deflection deformation detection device, which comprises a measuring meter, a pointer of the measuring meter is used for indirectly measuring the deflection deformation value of a bridge, the bridge deflection deformation detection device further comprises a supporting assembly, the measuring meter is fixed on the supporting assembly, and the supporting assembly is fixed on the ground through a tripod and is leveled; and the top of the auxiliary assembly is fixed on the bottom surface of the bridge, and the bottom of the auxiliary assembly is provided with a measuring position matched with a pointer of the measuring meter. The movable tripod is adopted, the device can be conveniently applied to places with uneven bridge bottoms, and the whole device has the advantages of being convenient to position, easy to operate and clear and reliable in bridge detection data.

Description

Technical Field

[0001] The utility model relates to the technical field of improved design of bridge load test detection devices, in particular to a bridge deflection deformation detection device. Background Art

[0002] In today's civil engineering industry, deflection measurement is widely used in buildings, railways, bridges, transportation, dams and other structures. Structural deflection testing is an important part for engineers to optimize structural design, understand the stress state of the structure and ensure structural safety. For example, in the construction process of large-span bridges and long-term health monitoring during operation and bridge load testing, monitoring and measuring the deflection of key sections of bridges is an important indicator and basis for evaluating the safety status of bridge structures.

[0003] Common deflection test methods include leveling, displacement meter method, static leveling method, radar method, etc. These methods all require setting fixed points outside the bridge, and obtaining the deflection of the bridge by measuring the elevation or displacement change of the measuring point on the bridge relative to the fixed point outside the bridge. Contact measurement methods such as displacement meter method have high accuracy and convenient testing, but when the bridge crosses obstacles such as rivers, streams, and mountain streams, or crosses urban roads, it is difficult to install contact displacement measuring instruments (such as displacement meters, etc.) because fixed brackets cannot be laid. Non-contact displacement monitoring instruments (such as static level, radar, etc.) and leveling methods can realize the deflection test of most bridges, but in the deflection test of long bridges, there are obvious disadvantages: the static level method has a long on-site installation time, high cost, and difficulty in application to large longitudinal slope bridges; the radar method cannot meet the accuracy requirements on long bridges and has low testing efficiency; leveling measurement requires the transmission of elevation from station to station. Long bridges have many measuring points and long distances, so the leveling time is quite long, the labor cost is high, and the human factor has a great influence. Therefore, it becomes very difficult to accurately and quickly test the deflection of bridges, which is also a major technical problem in the current field of bridge inspection engineering.

[0004] In the prior art, the patent with announcement number CN205300487U discloses a bridge deflection detector, which belongs to the field of bridge load test detection, including an instrument frame and a dial indicator fixed in the instrument frame, a spring is arranged on the dial indicator, one end of the spring is fixed on the dial indicator housing, and the other end is fixed on the measuring rod, the measuring rod of the dial indicator is vertically upward, and the center line of the spring is parallel to the center line of the measuring rod. The measuring rod of the dial indicator of the utility model is provided with an extension rod at the top, which is connected with the steel wire through the extension rod, thereby eliminating the suspended weight and reducing the influence of wind force. The utility model adopts an external spring to convert the thrust generated by the deformation of the bridge into the tension of the spring, thereby eliminating the error caused by the compression deformation of the steel wire and improving the detection accuracy. The utility model has a simple structure, a small size, a light weight, and is easy to carry; the use of a magnetic table base is reduced, and it is used in conjunction with fixings such as anchor steel chisels, which is suitable for various complex environments and saves time and cost for setting up platforms.

[0005] In the above technical solution, the instrument frame is used to replace the traditional magnetic meter base, and a connecting hole is set at the lower end of the instrument frame. The connecting hole is used to fix the utility model, which can be used in conjunction with a fixing base or an anchoring steel bar. When used in conjunction with the anchoring steel bar, it is easier to fix and is suitable for various types of areas such as ordinary ground, shallow water, and silt. It also involves the setting of the supporting and fixing mechanism, especially the problem of the horizontality of the instrument frame installation, and the corresponding solution is not disclosed.

[0006] In order to solve one of the above problems, the present application provides a bridge deflection deformation detection device. Utility Model Content

[0007] The purpose of the utility model is to solve the problems existing in the prior art, and a bridge deflection deformation detection device is proposed. The device adopts a movable tripod, which is convenient for application to uneven sites at the bottom of the bridge. The overall equipment has the characteristics of convenient positioning and simple operation, and the bridge detection data is clear and reliable.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bridge deflection deformation detection device, including a measuring meter, the pointer of the measuring meter indirectly measures the deflection deformation value of the bridge, and also includes a support assembly, the measuring meter is fixed on the support assembly, and the support assembly is fixed on the ground through a tripod and leveled;

[0009] The auxiliary component has its top fixed on the bottom surface of the bridge and its bottom provided with a measuring position matched with the pointer of the measuring meter.

[0010] Furthermore, the tripod as described above includes a first magnetic support and three adjustment rod groups, and the top of the adjustment rod group is hinged to the bottom surface of the first magnetic support.

[0011] Furthermore, the adjusting rod assembly as described above includes a rod member and a sleeve, and the rod member is sleeved in the sleeve and fastened by screws.

[0012] Furthermore, a screw hole is formed on the sleeve as described above, and a bolt is threadedly connected in the screw hole and pressed against the rod.

[0013] Furthermore, the supporting assembly as described above includes a magnetic plate magnetically adsorbed on the top of the tripod, and a second magnetic support is magnetically provided on the magnetic plate.

[0014] Furthermore, the second magnetic support as described above is fixed with a dial of a measuring meter, and the pointer of the measuring meter is arranged vertically upward.

[0015] Furthermore, the auxiliary components as described above include a measuring block, a suspension rope and a suspension hammer. The measuring block is bonded to the bottom surface of the bridge, and the two ends of the suspension rope are respectively connected to the measuring block and the suspension hammer.

[0016] Furthermore, the bottom of the pendulum as described above is processed with a measuring position that matches the pointer of the measuring meter.

[0017] Furthermore, the measuring position as described above is a blind hole processed at the bottom of the pendulum, and the measuring meter is a dial indicator or a dynamic deflection meter.

[0018] Furthermore, the measuring block and the pendulum as described above are respectively provided with hooks, and the pendulum rope is a steel wire rope.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the device is mainly used for the collection of deflection and deformation data for dynamic and static load detection of bridges, and facilitates equipment positioning and deflection data collection, solves the problems of too high bottom of the bridge, uneven detection site, and inconvenience in moving and adjusting the detection equipment, and has the characteristics of convenient positioning of the detection equipment, simple operation, and clear and reliable bridge detection data. It avoids the cumbersome procedure of building scaffolding and placing dial indicators at the bottom of the bridge, and also avoids the inaccuracy of deflection and deformation data collected by the total station. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the overall installation diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the auxiliary components of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation of the measuring meter of the utility model.

[0023] In the figure: 1. tripod; 11. adjustment rod group; 12. first magnetic support; 2. support assembly; 21. magnetic plate; 22. second magnetic support; 3. measuring table; 31. dial; 32. pointer; 4. auxiliary assembly; 41. measuring block; 42. lifting rope; 43. hanging hammer; 44. measuring position; 5. bridge. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a central element. When an element is considered to be "installed on" another element, it can be directly installed on the other element or there can be a central element. When an element is considered to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two elements.

[0026] For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] The following will be combined with the drawings in 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 in 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] Embodiment 1

[0029] Reference Figure 1-3As shown, a bridge deflection deformation detection device of the utility model includes a measuring gauge 3, a pointer 32 of the measuring gauge 3 indirectly measures the deflection deformation value of the bridge 5, and also includes a support component 2, the measuring gauge 3 is fixed on the support component 2, the support component 2 is fixed to the ground and leveled by a tripod 1, the tripod 1 is easy to carry, and can be quickly installed and fixed, especially three-point positioning to adjust the horizontality, and can adapt to uneven sites; an auxiliary component 4, the top of the auxiliary component 4 is fixed to the bottom surface of the bridge 5, and the bottom of the auxiliary component 4 is provided with a measuring position 44 that matches the pointer 32 of the measuring gauge 3.

[0030] Embodiment 2

[0031] Reference Figure 1-3 As shown, based on the technical solution of the first embodiment, a bridge deflection deformation detection device is provided. As for the specific structural design of the support assembly 2, the tripod 1 includes a first magnetic support 12 and three adjustment rod groups 11. The top of the adjustment rod group 11 is hinged to the bottom surface of the first magnetic support 12. The first magnetic support 12 is adjusted to maintain a horizontal setting by utilizing the principle of three-point coplanarity. Specifically, the adjustment rod group 11 includes a rod and a sleeve. The rod is sleeved in the sleeve and fastened by screws. In addition, a screw hole is opened on the sleeve. The screw hole is threaded with a bolt and pressed against the rod. Since the length of each adjustment rod group 11 can be easily adjusted, the three adjustment rod groups 11 can work together to complete the support and positioning on the ground, meeting the horizontality requirements of the first magnetic support 12.

[0032] In addition, the support assembly 2 includes a magnetic plate 21 magnetically adsorbed on the top of the tripod 1, and a second magnetic support 22 is magnetically provided on the magnetic plate 21. The magnetic plate 21 can be a metal plate with magnetism, specifically, a steel plate with magnetic adsorption ability. Furthermore, the second magnetic support 22 is fixed with a dial 31 of the measuring meter 3, and the pointer 32 of the measuring meter 3 is vertically arranged upward. For the magnetic plate 21, the upper and lower surfaces are magnetically adsorbed with the second magnetic support 22 and the first magnetic support 12, respectively. In order to ensure the positioning of the two magnetic supports on the magnetic plate 21, corresponding upper limit grooves and lower limit grooves are usually processed on the upper and lower surfaces of the magnetic plate 21. The sizes of the upper limit groove and the lower limit groove match the sizes of the second magnetic support 22 and the first magnetic support 12, respectively, and the bottom surfaces of the upper limit groove and the lower limit groove are parallel to each other and have the same flatness requirements, thereby ensuring that the flatness of the support assembly 2 meets the detection requirements.

[0033] Embodiment 3

[0034] Reference Figure 1-3As shown, based on the technical solution of the first embodiment, a bridge deflection deformation detection device, as for the specific structural design of the auxiliary component 4, the auxiliary component 4 includes a measuring block 41, a hanging rope 42 and a hanging hammer 43, the measuring block 41 is bonded to the bottom surface of the bridge 5, and the two ends of the hanging rope 42 are respectively connected to the measuring block 41 and the hanging hammer 43. Further, the bottom of the hanging hammer 43 as described above is processed with a measuring position 44 that matches the pointer 32 of the measuring gauge 3, wherein the measuring position 44 is a blind hole processed at the bottom of the hanging hammer 43, and the measuring gauge 3 uses a dial indicator or a dynamic deflection meter, which is a common measuring instrument on the market. Further, the measuring block 41 and the hanging hammer 43 are respectively provided with hooks, the hanging rope 42 uses a steel wire rope, and the measuring block 41 uses a wooden block, and the supporting part of the hook is installed in the wooden block.

[0035] In the device of the utility model, the assembly and matching relationship of the various components involved, the material selection of the components and the corresponding parameter design can be selected according to needs. For example, the material of the magnetic support and the magnetic plate 21 is existing technology or material, and the relevant technical personnel can directly purchase or customize them from the market according to the required product model and specifications.

[0036] The above is only a preferred specific embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned embodiment, and the utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiment should be regarded as exemplary and non-restrictive. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical scheme of the utility model and its utility model concept, shall be covered within the protection scope of the utility model.

Claims

1. A bridge deflection deformation detection device, comprising a measuring meter (3), a pointer (32) of the measuring meter (3) indirectly measuring the deflection deformation value of a bridge (5), characterized in that: It also includes a support assembly (2), a measuring meter (3) is fixed on the support assembly (2), and the support assembly (2) is fixed on the ground through a tripod (1) and leveled; The auxiliary component (4) has its top fixed on the bottom surface of the bridge (5), and its bottom is provided with a measuring position (44) that matches with the pointer (32) of the measuring meter (3).

2. A bridge deflection detection device according to claim 1, characterized in that: The tripod (1) comprises a first magnetic support (12) and three adjustment rod groups (11), wherein the top of the adjustment rod group (11) is hinged to the bottom surface of the first magnetic support (12).

3. A bridge deflection detection device according to claim 2, characterized in that: The adjusting rod group (11) comprises a rod and a sleeve, wherein the rod is sleeved in the sleeve and fastened by screws.

4. A bridge deflection detection device according to claim 3, characterized in that: The sleeve is provided with a screw hole, in which a bolt is threadedly connected and pressed against the rod.

5. The bridge deflection detection device according to claim 1, characterized in that: The support assembly (2) comprises a magnetic plate (21) magnetically adsorbed on the top of the tripod (1), and a second magnetic support (22) is magnetically provided on the magnetic plate (21).

6. A bridge deflection detection device according to claim 5, characterized in that: The second magnetic support (22) is fixed with a dial (31) of a measuring meter (3), and a pointer (32) of the measuring meter (3) is arranged vertically upward.

7. The bridge deflection detection device according to claim 1, characterized in that: The auxiliary component (4) comprises a measuring block (41), a suspension rope (42) and a suspension weight (43); the measuring block (41) is bonded to the bottom surface of the bridge (5); and the two ends of the suspension rope (42) are respectively connected to the measuring block (41) and the suspension weight (43).

8. A bridge deflection detection device according to claim 7, characterized in that: The bottom of the pendulum (43) is processed with a measuring position (44) that matches the pointer (32) of the measuring meter (3).

9. A bridge deflection detection device according to claim 8, characterized in that: The measuring position (44) is a blind hole processed at the bottom of the pendulum (43), and the measuring meter (3) is a dial indicator or a dynamic deflectometer.

10. A bridge deflection detection device according to claim 9, characterized in that: The measuring block (41) and the hanging hammer (43) are respectively provided with hanging hooks, and the hanging rope (42) is a steel wire rope.

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