Anti-beam-falling self-resetting displacement monitoring device applied to inverted-T-shaped bent cap simply supported girder bridge

Abstract

The utility model discloses an anti-beam-falling self-resetting displacement monitoring device applied to an inverted T-shaped capping beam simply supported girder bridge. The anti-beam-falling self-resetting displacement monitoring device comprises a sliding rail cylinder, a T-shaped sliding rod, a main beam connecting steel plate, a capping beam connecting steel plate, a fixed steel plate and a disc spring, one end of the sliding rail cylinder is fixedly arranged on the main beam connecting steel plate, and the other end of the sliding rail cylinder is provided with a disc spring; the T-shaped sliding rod comprises a rotating rod, a rotating shaft rod and a round base plate, the rotating rod is inserted into a rail of the sliding rail cylinder in the radial direction of the sliding rail cylinder, one end of the rotating shaft rod is perpendicularly connected to the center of the rotating rod, and the other end of the rotating shaft rod sequentially penetrates through the sliding rail cylinder and the fixed steel plate in the axial direction of the sliding rail cylinder and then is in limiting connection with the bent cap connecting steel plate. And a round base plate is arranged at the end part of the other end of the rotating shaft rod and is embedded on the bent cap connecting steel plate. According to the utility model, the connection between the beam bodies is established, greater earthquake action can be resisted, and early warning can be carried out through the displacement monitoring system, so that the safety of pedestrians and vehicles is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge structures, and in particular relates to a beam-falling prevention device applied to an inverted T-shaped cap beam simply supported beam bridge. Background Art

[0002] Simply supported beam bridges have been widely used in my country's bridge engineering due to their simple force bearing and static structure. In the development of bridge structures, the seismic performance of bridges is a factor that needs to be considered, because my country is a country prone to earthquakes. In the impact of earthquakes, the most likely form of damage to bridge structures is beam fall, which causes great harm to society and the people.

[0003] The traditional method of preventing beams from falling is mainly to set concrete anti-falling beam blocks on the pier body. However, due to the lack of connection between the beams, when the earthquake intensity is high, the anti-falling beam blocks are easily damaged, resulting in beam falling damage.

[0004] In summary, the traditional measures to prevent beams from falling have the following four technical problems:

[0005] (1) Traditional measures to prevent beams from falling do not establish a connection between beams. Therefore, when a high-intensity earthquake occurs, the beams shake violently, and the beam-falling prevention blocks are prone to shear damage and fail.

[0006] (2) Traditional anti-falling beam measures do not have a self-resetting effect. When the main beam is subjected to excessive displacement and deformation under load, its position cannot be corrected, resulting in continuous increase in displacement and deformation and damage.

[0007] (3) Traditional measures to prevent beams from falling do not have the function of displacement monitoring. When the displacement deformation is too large, it is impossible to send out danger signals in time.

[0008] (4) Traditional measures to prevent beams from falling require re-construction after damage, which is labor-intensive and time-consuming, and the quality is difficult to guarantee. Summary of the invention

[0009] In order to solve the above technical problems existing in the prior art, the utility model provides a beam-falling prevention device applied to an inverted T-shaped cap beam simply supported beam bridge.

[0010] The technical solution adopted by the utility model is:

[0011] A self-resetting displacement monitoring device for preventing beams from falling applied to a simply supported beam bridge with an inverted T-shaped cap beam, wherein main beams (9) are respectively arranged on both sides of the inverted T-shaped cap beam (10), and characterized in that a self-resetting displacement monitoring device is installed between the main beam (9) and the inverted T-shaped cap beam (10), and the self-resetting displacement monitoring device comprises a slide rail cylinder (1), a T-shaped slide bar (2), a main beam connecting steel plate (3), a cap beam connecting steel plate (4), a fixing steel plate (5) and a disc spring (6); the main beam connecting steel plate (3) is fixedly arranged at the end of the main beam (9), and the cap beam connecting steel plate (4) is fixedly arranged on the vertical portion of the inverted T-shaped cap beam (10); wherein:

[0012] One end of the slide rail cylinder (1) is fixed on the main beam connecting steel plate (3), and the other end of the slide rail cylinder (1) is provided with the disc spring (6), one end of the disc spring (6) is fixed on the slide rail cylinder (1), and the other end is fixed on the fixed steel plate (5), and the fixed steel plate (5) is fixed on the cap beam connecting steel plate (4);

[0013] The T-shaped slide bar (2) comprises a rotating rod (21), a rotating shaft rod (22) and a circular bottom plate (23); the rotating rod (21) is inserted into the track of the slide rail cylinder (1) along the radial direction of the slide rail cylinder (1); one end of the rotating shaft rod (22) is vertically connected to the center of the rotating rod (21); the other end of the rotating shaft rod (22) passes through the slide rail cylinder (1) and the fixed steel plate (5) in sequence along the axial direction of the slide rail cylinder (1) and is limitedly connected to the cap beam connecting steel plate (4); and the end of the other end of the rotating shaft rod (22) is provided with the circular bottom plate (23), and the circular bottom plate (23) is embedded in the cap beam connecting steel plate (4).

[0014] Furthermore, it also includes a displacement monitoring circuit (8), which is installed on the slide rail cylinder (1) and is connected to the displacement monitoring circuit only when the rotating rod moves to the corresponding displacement monitoring point. Specifically, the displacement monitoring circuit (8) is installed at the displacement monitoring position through an externally insulated wire, and when the rotating rod (21) is exactly turned to the displacement monitoring position, the circuit is connected, and a reminder and warning are issued to the background monitoring system.

[0015] Furthermore, the track on the slide rail cylinder (1) is in a double helix shape, the two tracks are of equal width, and the two tracks are arranged symmetrically about the center of the cross section of the slide rail cylinder.

[0016] Furthermore, the openings of the two tracks are arranged on the main beam connection side, and the limit openings of the two tracks are arranged on the cap beam connection side, and the limit openings are used to control the maximum longitudinal displacement of the main beam to prevent the beam from falling.

[0017] Furthermore, the inner diameter of the slide rail cylinder (1) is greater than the diameter of the rotating shaft rod (22).

[0018] Furthermore, the diameter of the rotating rod (21) is equal to the track width of the slide rail cylinder (1), so that during the rotation of the rotating rod, the friction with the track can provide an energy dissipation effect.

[0019] Furthermore, a through hole for the rotating shaft rod to pass through is provided on the fixing steel plate (5), and a cylindrical cavity for fixing the circular bottom plate (23) is provided at a position corresponding to the circular bottom plate on the cap beam connecting steel plate (4).

[0020] Furthermore, the fixed steel plate (5) is formed by splicing two identical steel plates.

[0021] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0022] (1) Compared with the traditional measures to prevent beams from falling, the utility model establishes a connection between the main beam and the cap beam. Therefore, when an earthquake occurs, the connection between the main beam and the cap beam is closer, and the force transmission path is more direct. In addition, the utility model can better resist the impact of earthquakes by absorbing friction energy between the T-shaped sliding rod and the track cylinder.

[0023] (2) Compared with traditional measures to prevent beams from falling, the utility model adopts disc spring treatment, which stores elastic potential energy during the displacement of the main beam under the action of load, and releases the elastic potential energy to drive the device to reset after the load on the main beam is unloaded, thereby achieving a self-resetting effect; the self-resetting effect is increased, and the effect of preventing beams from falling is also enhanced to a certain extent.

[0024] (3) Compared with traditional measures to prevent beams from falling, the utility model has the function of displacement monitoring, which can understand the displacement status of the main beam in real time during the displacement and deformation process, and can issue timely warnings when the displacement is large, so that maintenance personnel can discover and solve the problem in time.

[0025] (4) Compared with traditional anti-falling beam measures, the utility model can be prefabricated in the factory, ensuring its safety and quality. At the construction site, only the mechanical connection of the bolts needs to be completed to complete the installation, which greatly shortens the construction time.

[0026] (5) The utility model is easy to replace and install, and can also be constructed and installed in an already built bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A front view of an embodiment of the device;

[0028] Figure 2 A detailed front view of an embodiment of the device;

[0029] Figure 3 A three-dimensional diagram of an embodiment of this device;

[0030] Figure 4 A partial three-dimensional diagram of an embodiment of this device;

[0031] Explanation of the accompanying drawings: 1. Slide rail cylinder, 2. T-shaped slide rod, 21. Rotating rod, 22. Pivot rod, 23. Round chassis 3. Main beam connecting steel plate, 4. Cover beam connecting steel plate, 5. Fixed steel plate, 6. Disc spring, 7. Hexagonal bolt, 8. Displacement monitoring circuit, 9. Main beam, 10. Inverted T-shaped cover beam. DETAILED DESCRIPTION

[0032] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0035] refer to Figures 1 to 4 The utility model discloses a self-resetting displacement monitoring device for preventing beams from falling off applied to a simply supported beam bridge with an inverted T-shaped cap beam. Main beams 9 are respectively arranged on both sides of the inverted T-shaped cap beam 10. A self-resetting displacement monitoring device is installed between the main beam 9 and the inverted T-shaped cap beam 10. The self-resetting displacement monitoring device comprises a slide rail cylinder 1, a T-shaped slide bar 2, a main beam connecting steel plate 3, a cap beam connecting steel plate 4, a fixing steel plate 5 and a disc spring 6; the main beam connecting steel plate 3 is fixedly arranged at the end of the main beam 9, and the cap beam connecting steel plate 4 is fixedly arranged on the vertical part of the inverted T-shaped cap beam 10; wherein:

[0036] One end of the slide rail cylinder 1 is fixed on the main beam connecting steel plate 3, and the other end of the slide rail cylinder 1 is provided with the disc spring 6, one end of the disc spring 6 is fixed on the slide rail cylinder (1), and the other end is fixed on the fixed steel plate 5, and the fixed steel plate 5 is fixed on the cap beam connecting steel plate 4;

[0037] The T-shaped slide bar 2 includes a rotating rod 21, a rotating shaft rod 22 and a circular bottom plate 23. The rotating rod 21 is inserted into the track of the slide rail cylinder 1 along the radial direction of the slide rail cylinder 1. One end of the rotating shaft rod 22 is vertically connected to the center of the rotating rod 21. The other end of the rotating shaft rod 22 passes through the slide rail cylinder 1 and the fixed steel plate 5 in sequence along the axial direction of the slide rail cylinder 1 and is limitedly connected to the cap beam connecting steel plate 4. The end of the other end of the rotating shaft rod 22 is provided with the circular bottom plate 23, and the circular bottom plate 23 is embedded in the cap beam connecting steel plate 4.

[0038] In one embodiment, a displacement monitoring circuit 8 is also included, and the displacement monitoring circuit 8 is installed on the slide rail cylinder 1, and the displacement monitoring circuit is connected only when the rotating rod moves to the corresponding displacement monitoring point. Specifically, the displacement monitoring circuit (8) is installed at the displacement monitoring position through an externally insulated wire, and when the rotating rod (21) is exactly turned to the displacement monitoring position, the circuit is connected, and a reminder and warning are issued to the background monitoring system.

[0039] In one embodiment, the track on the slide rail cylinder 1 is in a double spiral shape, the two tracks are of equal width, and the two tracks are arranged symmetrically about the center of the cross section of the slide rail cylinder.

[0040] In one embodiment, the openings of the two tracks are arranged on the main beam connection side, and the limit openings of the two tracks are arranged on the cap beam connection side, and the limit openings are used to control the maximum longitudinal displacement of the main beam to prevent the beam from falling.

[0041] In one embodiment, the inner diameter of the slide rail cylinder 1 is greater than the diameter of the rotating shaft rod 22 .

[0042] In one embodiment, the diameter of the rotating rod 21 is equal to the track width of the slide rail cylinder 1, so that during the rotation of the rotating rod, the rotating rod can rub against the track to provide an energy dissipation effect.

[0043] In one embodiment, a through hole for the rotating shaft rod to pass through is opened on the fixing steel plate 5, and a cylindrical cavity for fixing the circular bottom plate 23 is opened at a position corresponding to the circular bottom plate on the cap beam connecting steel plate 4.

[0044] In one embodiment, the fixed steel plate 5 is formed by splicing two identical steel plates.

[0045] The construction method includes the following steps:

[0046] Step 1: Process the slide rail cylinder 1, the rotating rod 21, the rotating shaft rod 22, and the round bottom plate 23 in the factory, weld the rotating rod 21 to the middle of the rotating shaft rod 22 and make the angle between the two rods 90°, and then weld the other end of the rotating shaft rod 22 to the center of the round bottom plate 23 to form a T-shaped slide bar 2;

[0047] Step 2: Fix several evenly arranged disc springs 6 near the side of the slide rail cylinder close to the inverted T-shaped cap beam, screw the T-shaped slide bar 2 into the inside of the slide rail cylinder along the track of the slide rail cylinder 1, and make the position of the round bottom plate 23 exceed the disc spring 6;

[0048] Step 3: Place the round bottom plate 23 into the cap beam connecting steel plate 4, and fix the rotating shaft rod 22 and the round bottom plate 23 with two fixing steel plates 5 with openings, and fix them as a whole with hexagonal bolts 7 through the bolt holes reserved on the cap beam connecting steel plate 4 and the fixing steel plates 5;

[0049] Step 4: Weld the disc spring 6 to the fixed steel plate 5, and the original length of the disc spring 6 is the initial displacement position of the device 0. Weld the top surface of the slide rail cylinder 1 to the main beam connecting steel plate 3 and insulate the displacement monitoring circuit 8 and connect it to the slide rail cylinder 1.

[0050] Step 5: At the construction site, the main beam connecting steel plate 3 and the cap beam connecting steel plate 4 are mechanically connected by hexagonal bolts 7 through the bolt holes reserved on the main beam and the inverted T-shaped cap beam.

[0051] For both the construction of new bridges and the reconstruction of old bridges, the construction of the anti-falling beam device can be completed using the above steps.

[0052] The anti-falling beam device proposed in the present invention can improve the practicality and safety of the bridge, and the construction is convenient and fast, which has a certain positive effect on the reconstruction of old bridges. Compared with the existing technology, this device establishes the connection between the beams and adopts the principle of friction energy consumption, which can resist greater earthquake effects. In the case of small displacement, the self-resetting effect of the disc spring can ensure the safety and stability of the beam body. When the displacement is too large, the displacement monitoring system can also issue an early warning to ensure the safety of pedestrians and vehicles.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A self-resetting displacement monitoring device for preventing beams from falling off applied to a simply supported beam bridge with an inverted T-shaped cap beam, wherein main beams (9) are respectively arranged on both sides of the inverted T-shaped cap beam (10), and the device is characterized in that: A self-resetting displacement monitoring device is installed between the main beam (9) and the inverted T-shaped cap beam (10), and the self-resetting displacement monitoring device comprises a slide rail cylinder (1), a T-shaped slide bar (2), a main beam connecting steel plate (3), a cap beam connecting steel plate (4), a fixing steel plate (5) and a disc spring (6); the main beam connecting steel plate (3) is fixedly arranged at the end of the main beam (9), and the cap beam connecting steel plate (4) is fixedly arranged on the vertical portion of the inverted T-shaped cap beam (10); wherein: One end of the slide rail cylinder (1) is fixed on the main beam connecting steel plate (3), and the other end of the slide rail cylinder (1) is provided with the disc spring (6), one end of the disc spring (6) is fixed on the slide rail cylinder (1), and the other end is fixed on the fixed steel plate (5), and the fixed steel plate (5) is fixed on the cap beam connecting steel plate (4); The T-shaped slide bar (2) comprises a rotating rod (21), a rotating shaft rod (22) and a circular bottom plate (23); the rotating rod (21) is inserted into the track of the slide rail cylinder (1) along the radial direction of the slide rail cylinder (1); one end of the rotating shaft rod (22) is vertically connected to the center of the rotating rod (21); the other end of the rotating shaft rod (22) passes through the slide rail cylinder (1) and the fixed steel plate (5) in sequence along the axial direction of the slide rail cylinder (1) and is limitedly connected to the cap beam connecting steel plate (4); and the end of the other end of the rotating shaft rod (22) is provided with the circular bottom plate (23), and the circular bottom plate (23) is embedded in the cap beam connecting steel plate (4).

2. The self-resetting displacement monitoring device for preventing beams from falling applied to simply supported beam bridges with inverted T-shaped cap beams as claimed in claim 1 is characterized in that: It also comprises a displacement monitoring circuit (8), wherein the displacement monitoring circuit (8) is installed on the slide rail cylinder (1).

3. The self-resetting displacement monitoring device for preventing beam drop applied to an inverted T-shaped cap beam simply supported bridge as claimed in claim 1, characterized in that: The track on the slide rail cylinder (1) is in a double helix shape, the two tracks are of equal width, and the two tracks are arranged symmetrically about the center of the cross section of the slide rail cylinder.

4. The self-resetting displacement monitoring device for preventing beams from falling applied to simply supported beam bridges with inverted T-shaped cap beams as claimed in claim 3 is characterized in that: The openings of the two tracks are arranged on the main beam connection side, and the limit openings of the two tracks are arranged on the cap beam connection side. The limit openings are used to control the maximum longitudinal displacement of the main beam to prevent the beam from falling.

5. The self-resetting displacement monitoring device for preventing beams from falling applied to simply supported beam bridges with inverted T-shaped cap beams as claimed in claim 1, characterized in that: The inner diameter of the slide rail cylinder (1) is greater than the diameter of the rotating shaft rod (22).

6. The self-resetting displacement monitoring device for preventing beams from falling applied to simply supported beam bridges with inverted T-shaped cap beams as claimed in claim 1, characterized in that: The diameter of the rotating rod (21) is equal to the track width of the slide rail cylinder (1).

7. The self-resetting displacement monitoring device for preventing beams from falling applied to simply supported beam bridges with inverted T-shaped cap beams as claimed in claim 1, characterized in that: The fixing steel plate (5) is provided with a through hole for the shaft rod to pass through, and the cap beam connecting steel plate (4) is provided with a cylindrical cavity for fixing the circular bottom plate (23) at a position corresponding to the circular bottom plate.

8. The self-resetting displacement monitoring device for preventing beams from falling applied to simply supported beam bridges with inverted T-shaped cap beams as claimed in claim 1, characterized in that: The fixed steel plate (5) is formed by splicing two identical steel plates.

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