Bridge expansion joint monitoring system and bridge

Abstract

The utility model relates to a bridge expansion joint monitoring system and a bridge, and the system comprises a bridge expansion measuring device which is fixedly arranged at a bridge expansion joint, the bridge expansion measuring device comprises a movable end and a fixed end which are in mutual insertion connection, the movable end is provided with a main scale mark, and the fixed end is provided with a main scale mark; the fixed end is provided with an auxiliary scale mark matched with the main scale mark. The bridge expansion measuring device is provided with the movable end and the fixed end which are mutually inserted, the movable end is provided with the main scale mark, the fixed end is provided with the auxiliary scale mark matched with the main scale mark, the main scale mark and the auxiliary scale mark are used for reading the expansion amount of the bridge expansion joint, and the expansion amount of the bridge expansion joint is measured. According to the invention, accurate measurement of the bridge expansion joint is realized, and the technical problems of low precision and large error caused by manual measurement in bridge expansion joint monitoring and high cost caused by sensor measurement in the prior art are solved.

Description

Technical Field

[0001] This application relates to the field of bridges, specifically to a bridge expansion joint monitoring system and a bridge. Background Technology

[0002] Currently, bridge expansion joints are an important component of bridge structures. They allow the bridge to expand and contract freely under the influence of factors such as temperature changes, loads, concrete shrinkage, or creep, thus preventing cracks and damage to the bridge structure. Under long-term effects of temperature changes or vehicle loads, the bridge beam may shift and rotate, making the bridge expansion joint device prone to damage and affecting the safety of the bridge structure.

[0003] In related technologies, there are two main methods for monitoring bridge expansion joints: one is manual measurement, which requires personnel to bring their own tools to the site for measurement. Traditional tools have low accuracy and large errors. The other is sensor measurement, which is expensive and requires a matching data acquisition device to collect data.

[0004] Therefore, it is necessary to design a new bridge expansion joint monitoring system to overcome the above problems. Utility Model Content

[0005] This application provides a bridge expansion joint monitoring system and a bridge, which can solve the technical problems in related technologies where manual measurement of bridge expansion joints has low accuracy and large error, while sensor measurement is costly.

[0006] In a first aspect, embodiments of this application provide a bridge expansion joint monitoring system, which includes: a bridge expansion measuring device, the bridge expansion measuring device being fixed to a bridge expansion joint, the bridge expansion measuring device including a movable end and a fixed end that are plugged into each other, the movable end being provided with a main scale mark, and the fixed end being provided with a secondary scale mark that cooperates with the main scale mark.

[0007] In conjunction with the first aspect, in one embodiment, the bridge expansion joint measuring device includes a support, the support having the movable end, the support being used to fix to a bridge beam on one side of the bridge expansion joint, and the fixed end being used to fix to a bridge beam on the other side of the bridge expansion joint.

[0008] In conjunction with the first aspect, in one embodiment, the movable end includes a top plate, the top plate being fixed to the support, the top plate having ribs on both sides along the transverse bridge direction, the top plate having multiple first racks extending along the longitudinal bridge direction, the multiple first racks being spaced apart along the transverse bridge direction, one of the first racks being provided with the main scale mark.

[0009] In conjunction with the first aspect, in one embodiment, the fixed end includes a fixing tooth for fixing to a bridge beam on one side of a bridge expansion joint. The fixing tooth is provided with multiple second racks extending along the longitudinal direction of the bridge. The multiple second racks are interlocked with multiple first racks, wherein the second rack located adjacent to the main scale mark is provided with the secondary scale mark.

[0010] In conjunction with the first aspect, in one embodiment, the fixing tooth is further provided with a steel pressure plate, and a plurality of the first racks are slidably disposed on the steel pressure plate.

[0011] In conjunction with the first aspect, in one embodiment, the free end of each of the first racks and the free end of each of the second racks are provided with a chamfer.

[0012] In conjunction with the first aspect, in one embodiment, the main scale is set to 0–2100 mm, and the secondary scale is set to 0–19 mm.

[0013] In conjunction with the first aspect, in one embodiment, the bridge expansion joint monitoring system further includes a monitoring unit, which is used to identify the scales of the main scale and the secondary scale and output readings in real time.

[0014] In conjunction with the first aspect, in one embodiment, the monitoring unit is configured as a camera, the camera having a built-in controller, the camera being used to take a photo of the overlapping area of ​​the main scale mark and the secondary scale mark, and the controller processing the photo to identify the scale.

[0015] Secondly, embodiments of this application provide a bridge that includes the aforementioned bridge expansion joint monitoring system.

[0016] The beneficial effects of the technical solutions provided in this application include:

[0017] By setting up an interlocking movable end and a fixed end on the bridge expansion joint measuring device, with the movable end equipped with a main scale and the fixed end equipped with a secondary scale that cooperates with the main scale, the expansion and contraction of the bridge expansion joint can be read using the main and secondary scales, thus achieving accurate measurement of the bridge expansion joint. This solves the technical problems in related technologies where manual measurement of bridge expansion joints has low accuracy and large errors, while sensor measurement is costly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a bridge expansion joint monitoring system provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the structure of the active end provided in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the fixed end provided in an embodiment of this application;

[0022] Figure 4 A schematic diagram of the structure of the first and second main scales provided in the embodiments of this application;

[0023] Figure 5 This is a structural schematic diagram of the bridge expansion joint measuring device and monitoring unit provided in the embodiments of this application.

[0024] In the diagram: 1. Bridge expansion joint measuring device; 11. Movable end; 111. Main scale mark; 112. Top plate; 113. Rib plate; 114. First rack; 115. End sealing plate; 12. Fixed end; 121. Secondary scale mark; 122. Fixed tooth; 123. Second rack; 124. Steel pressure plate; 13. Support; 2. Monitoring unit. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] This application provides a bridge expansion joint monitoring system and a bridge, which can solve the technical problems of low accuracy and large error when using manual measurement for bridge expansion joint monitoring, and high cost when using sensor measurement.

[0027] See Figure 1 and Figure 4 As shown in the figure, this application provides a bridge expansion joint monitoring system, which includes: a bridge expansion measuring device 1, the bridge expansion measuring device 1 being fixed to the bridge expansion joint, the bridge expansion measuring device 1 including a movable end 11 and a fixed end 12 that are plugged into each other, the movable end 11 being provided with a main scale mark 111, and the fixed end 12 being provided with a secondary scale mark 121 that cooperates with the main scale mark 111.

[0028] In this embodiment, the movable end 11 and the fixed end 12 are installed between the bridge beams on both sides of the bridge expansion joint. When the bridge beams on both sides of the bridge expansion joint expand or contract under the long-term action of temperature or vehicle load, the movable end 11 and the fixed end 12 will undergo relative displacement along the longitudinal direction of the bridge. The expansion and contraction of the bridge expansion joint can be obtained by reading the scale of the main scale mark 111 and the scale of the secondary scale mark 121, thereby improving the measurement accuracy of the bridge expansion joint and reducing the measurement cost.

[0029] This embodiment uses a bridge expansion joint measuring device 1 with a movable end 11 and a fixed end 12 that are interlocked. The movable end 11 is equipped with a main scale 111, and the fixed end 12 is equipped with a secondary scale 121 that cooperates with the main scale 111. The expansion and contraction of the bridge expansion joint is read using the main scale 111 and the secondary scale 121, thus achieving accurate measurement of the bridge expansion joint. This solves the technical problems in related technologies where manual measurement of bridge expansion joints has low accuracy and large errors, while sensor measurement is costly.

[0030] Further, see Figure 1 and Figure 2 As shown, in some embodiments, the bridge expansion measuring device 1 includes a support 13, the support 13 being provided with the movable end 11, the support 13 being used to fix the bridge beam on one side of the bridge expansion joint, and the fixed end 12 being used to fix the bridge beam on the other side of the bridge expansion joint.

[0031] In this embodiment, the support 13 is bolted to the bridge beam on one side of the bridge expansion joint. The support 13 is bolted to the movable end 11 through a steel plate. The movable end 11 is fixed to the bridge beam on one side of the bridge expansion joint through the support 13. The fixed end 12 is fixed to the bridge beam on the other side of the bridge expansion joint. When the bridge beams on both sides of the bridge expansion joint expand and contract under the long-term action of temperature or vehicle load, the movable end 11 and the fixed end 12 will undergo relative displacement.

[0032] Further, see Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the movable end 11 includes a top plate 112, which is fixed to the support 13. The top plate 112 is provided with ribs 113 on both sides along the transverse bridge direction. The top plate 112 is provided with multiple first racks 114 extending along the longitudinal bridge direction. The multiple first racks 114 are arranged at intervals along the transverse bridge direction, and one of the first racks 114 is provided with the main scale mark 111.

[0033] In this embodiment, the top plate 112 is bolted to the support 13 via a support plate. The top plate 112 is provided with an end sealing plate 115 on the side near the support 13. The end sealing plate 115 is connected to the two ribs 113. Exemplarily, the second first rack 114 of the movable end 11 is provided with the main scale mark 111. The second first rack 114 can be defined as the main scale.

[0034] Further, see Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the fixed end 12 includes a fixed tooth 122, which is used to fix the bridge beam on one side of the bridge expansion joint. The fixed tooth 122 is provided with multiple second racks 123 extending along the longitudinal direction of the bridge. The multiple second racks 123 are interlocked with multiple first racks 114. The second racks 123 located on the side adjacent to the main scale mark 111 are provided with the secondary scale mark 121.

[0035] In this embodiment, the fixing tooth 122 is formed by concrete casting. The fixing tooth 122 is anchored to multiple second toothed racks 123. Exemplarily, the second toothed rack 123 adjacent to the second first toothed rack 114 is provided with the secondary scale mark 121 and can be defined as a secondary ruler. The main ruler and the secondary ruler cooperate to measure the expansion and contraction of the bridge expansion joint. When one of the scale lines of the secondary ruler is aligned with one of the scale lines of the main ruler, the main ruler can read the integer part of the expansion and contraction of the bridge expansion joint. The secondary ruler and the main ruler cooperate to read the decimal part of the expansion and contraction of the bridge expansion joint. When the horizontal displacement of the bridge beams on both sides of the bridge expansion joint is inconsistent, the bridge beams on both sides of the bridge expansion joint will generate a horizontal angle. At the same time, the bridge expansion and contraction measuring device 1 rotates horizontally to generate a horizontal rotation angle. The horizontal rotation angle of the bridge expansion and contraction measuring device 1 can be calculated by using the longitudinal displacement and the transverse length of the bridge expansion and contraction measuring device 1 and by using inverse trigonometric functions. The longitudinal displacement of the bridge expansion and contraction measuring device 1 is equal to the expansion and contraction of the bridge expansion joint.

[0036] Further, see Figure 1-3 As shown, in some embodiments, the fixing tooth 122 is further provided with a steel pressure plate 124, and a plurality of the first racks 114 are slidably disposed on the steel pressure plate 124.

[0037] In this embodiment, the steel pressure plate 124 is bolted to the fixed tooth 122. The steel pressure plate 124 can be configured as a comb shape. Multiple first toothed racks 114 can slide along the steel pressure plate 124, so that multiple first toothed racks 114 and multiple second toothed racks 123 are interlocked along the longitudinal bridge direction.

[0038] Further, see Figure 1-3 As shown, in some embodiments, the free ends of each of the first racks 114 and the free ends of each of the second racks 123 are chamfered.

[0039] In this embodiment, the free end of each first rack 114 and the free end of each second rack 123 are provided with the chamfer to prevent the rack of the movable end 11 from lifting up, improve driving comfort, and facilitate the removal of foreign objects from the tooth gaps. The chamfer can be set as a trapezoidal chamfer or other gradient chamfer.

[0040] Further, see Figure 4 As shown, in some embodiments, the main scale mark 111 is set to 0-2100 mm, and the subscale mark 121 is set to 0-19 mm.

[0041] In this embodiment, a small graduation of the main scale 111 can be set to 1 mm, a large graduation of the main scale 111 can be set to 10 mm, and the main scale 111 has 210 large graduations; a small graduation of the secondary scale 121 can be set to 0.95 mm, a large graduation of the secondary scale 121 can be set to 9.5 mm, and the secondary scale 121 has 2 large graduations; the measurement accuracy of the bridge expansion joint measuring device 1 can be set to 0.05 mm.

[0042] Further, see Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, the bridge expansion joint monitoring system further includes a monitoring unit 2, which is used to identify the scales of the main scale mark 111 and the secondary scale mark 121 and output readings in real time.

[0043] In this embodiment, the monitoring unit 2 is installed at a set position on the bridge, and the field of view of the monitoring unit 2 is directly opposite to the bridge expansion and contraction measuring device 1. The monitoring unit 2 is used to identify the scales of the main scale mark 111 and the secondary scale mark 121 and output readings in real time, so as to realize real-time monitoring of the longitudinal displacement of the bridge expansion and contraction measuring device 1.

[0044] Further, see Figure 5 As shown, in some embodiments, the monitoring unit 2 is configured as a camera, which has a built-in controller. The camera is used to take a picture of the overlapping area of ​​the main scale mark 111 and the secondary scale mark 121, and the controller processes the picture to identify the scale.

[0045] In this embodiment, the camera is electrically connected to the controller. The camera first acquires an image to capture a photograph of the overlapping area of ​​the main scale and the secondary scale. Then, the controller processes the photograph, using image segmentation to identify the scale areas of the main scale and the secondary scale. Finally, OCR (Optical Character Recognition) is used to identify the scales on the main scale 111 and the secondary scale 121. By matching the scales on the main scale 111 and the secondary scale 121 with the scale positions of the main scale and the secondary scale, the reading can be calculated. The controller processes the photograph by converting it to a grayscale image, using Gaussian filtering to reduce image noise, and using the Canny edge detection algorithm to extract the edges of the scale lines, converting the photograph into a black-and-white binary image highlighting the scale lines. In other embodiments, the controller can be located outside the camera, connected to the camera via a signal, and displays the scale image and corresponding readings through a display device.

[0046] See Figure 1 and Figure 4 As shown, this application provides a bridge that includes the aforementioned bridge expansion joint monitoring system.

[0047] In this embodiment, the bridge is equipped with the bridge expansion joint monitoring system. The movable end 11 and the fixed end 12 are installed between the bridge beams on both sides of the bridge expansion joint. When the bridge beams on both sides of the bridge expansion joint expand or contract under the long-term effects of temperature or vehicle load, the movable end 11 and the fixed end 12 will undergo relative displacement along the longitudinal direction of the bridge. By reading the scale of the main scale mark 111 and the scale of the secondary scale mark 121, the expansion and contraction of the bridge expansion joint can be obtained, thereby improving the measurement accuracy of the bridge expansion joint and reducing the measurement cost.

[0048] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0049] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A bridge expansion joint monitoring system, characterized in that, It includes: A bridge expansion joint measuring device (1) is used to be fixed to a bridge expansion joint. The bridge expansion joint measuring device (1) includes a movable end (11) and a fixed end (12) that are interlocked with each other. The movable end (11) is provided with a main scale mark (111), and the fixed end (12) is provided with a secondary scale mark (121) that cooperates with the main scale mark (111).

2. The bridge expansion joint monitoring system as described in claim 1, characterized in that, The bridge expansion joint measuring device (1) includes a support (3), the support (3) is provided with the movable end (11), the support (3) is used to fix the bridge beam on one side of the bridge expansion joint, and the fixed end (12) is used to fix the bridge beam on the other side of the bridge expansion joint.

3. The bridge expansion joint monitoring system as described in claim 2, characterized in that, The movable end (11) includes a top plate (112), which is fixed to the support (3). The top plate (112) has ribs (113) on both sides along the transverse bridge direction. The top plate (112) has multiple first racks (114) extending along the longitudinal bridge direction. The multiple first racks (114) are arranged at intervals along the transverse bridge direction, and one of the first racks (114) is provided with the main scale mark (111).

4. The bridge expansion joint monitoring system as described in claim 3, characterized in that, The fixed end (12) includes a fixed tooth (122), which is used to fix the bridge beam on one side of the bridge expansion joint. The fixed tooth (122) is provided with multiple second toothed bars (123) extending along the longitudinal direction of the bridge. The multiple second toothed bars (123) are interlocked with multiple first toothed bars (114). The second toothed bar (123) located next to the main scale mark (111) is provided with the sub-scale mark (121).

5. The bridge expansion joint monitoring system as described in claim 4, characterized in that, The fixed tooth (122) is also provided with a steel pressure plate (124), and a plurality of the first toothed racks (114) are slidably disposed on the steel pressure plate (124).

6. The bridge expansion joint monitoring system as described in claim 4, characterized in that, The free ends of each of the first racks (114) and the free ends of each of the second racks (123) are chamfered.

7. The bridge expansion joint monitoring system as described in claim 1, characterized in that, The main scale mark (111) is set to 0-2100 mm, and the secondary scale mark (121) is set to 0-19 mm.

8. The bridge expansion joint monitoring system as described in claim 1, characterized in that, The bridge expansion joint monitoring system also includes a monitoring unit (2), which is used to identify the scale of the main scale (111) and the secondary scale (121) and output the reading in real time.

9. The bridge expansion joint monitoring system as described in claim 8, characterized in that, The monitoring unit (2) is set as a camera, which has a built-in controller. The camera is used to take a picture of the overlapping area of ​​the main scale mark (111) and the secondary scale mark (121), and the controller processes the picture to identify the scale.

10. A bridge, characterized in that, It includes the bridge expansion joint monitoring system as described in claim 1.

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