Medium-short bridge fracture disaster early warning device

Abstract

The utility model provides a medium-short bridge fracture disaster early warning device which comprises a communicating pipe fixedly installed on the side portion of a bridge, a liquid storage tank communicating with the communicating pipe, a liquid level monitoring device arranged in the liquid storage tank, a control device and an alarm device, the control device and the alarm device are connected to the bridge, and anti-freezing liquid is stored in the liquid storage tank. The control device is in signal connection with the liquid level monitoring device and the alarm device, and the communicating pipe has low toughness. According to the medium-short bridge fracture disaster early warning device, the principle that when a bridge is fractured or damaged, the liquid level in the liquid storage tank is lowered due to leakage of anti-freezing liquid in the communicating pipe is utilized, the abnormal condition of the bridge can be found in time by monitoring the liquid level change in the liquid storage tank, and therefore early warning is conducted; and the installation difficulty and the construction and maintenance cost of the bridge fracture disaster early warning device are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bridge monitoring equipment, and in particular to a fracture disaster early warning device for medium and short bridges. Background Art

[0002] As vital transportation infrastructure, the safety and stability of bridges are directly linked to the safety of people's lives and property, as well as the smooth operation of transportation networks. However, over the long term, bridges can suffer structural damage, even severe disasters such as fractures and collapses, due to factors such as environmental erosion, vehicle loads, and material aging. This is particularly true for short and medium-sized bridges, which are widely used in urban roads, rural highways, sidewalks, and light rail transit. Due to their large number and low construction and maintenance costs, these bridges present particularly significant safety risks.

[0003] In the event of a sudden bridge failure, a prior art Chinese patent, CN111412829A, provides a real-time monitoring and early warning device for the collapse of a beam bridge. This device uses a capacitive displacement meter and a current meter attached to the main beam to simultaneously monitor the angular displacements at multiple locations on the bridge's main beam. The sum of these angular displacements serves as a criterion for evaluating bridge collapse, providing an early warning of the event. However, while this solution offers high detection accuracy, the installation process is cumbersome and costly. Utility Model Content

[0004] The purpose of the utility model is to provide a medium-short bridge fracture disaster warning device, which can effectively reduce the installation difficulty and construction and maintenance costs of the bridge fracture disaster warning device.

[0005] This application is achieved through the following technical solutions, specifically:

[0006] A medium-short bridge fracture disaster warning device includes: a connecting pipe fixedly installed on the side of the bridge, a liquid storage tank connected to the connecting pipe, a liquid level monitoring device arranged in the liquid storage tank, and a control device and an alarm device connected to the bridge. Antifreeze liquid is stored in the liquid storage tank. The control device is respectively connected to the liquid level monitoring device and the alarm device for signals. The connecting pipe has low toughness.

[0007] This solution involves fixing a low-toughness connecting pipe to the side of the bridge and connecting it to a liquid storage tank equipped with a liquid level monitoring device. This allows real-time monitoring of changes in the bridge's status. If the bridge breaks or is damaged, leakage of antifreeze from the connecting pipe causes the liquid level in the storage tank to drop. When the level reaches the minimum level set by the control device, an alarm signal is triggered. This short- to medium-sized bridge fracture disaster warning device has a simple structure and low cost. It can provide timely warnings of bridge fracture disasters, reducing traffic disruptions and casualties caused by bridge fractures. It is suitable for deployment on various short- to medium-sized bridges and possesses strong practicality.

[0008] As an improvement to the connecting pipe in the solution of the present application, the connecting pipe includes a PVC-U pipe.

[0009] As an improvement to the connecting pipe in the present application, in order to ensure the reliability of bridge fracture warning, the connecting pipe includes a first connecting pipe and a second connecting pipe respectively fixedly installed on both sides of the bridge.

[0010] Furthermore, the connecting pipe is fixedly installed on the side of the bridge through a bracket.

[0011] As an improvement to the control device of the present application, in order to improve the accuracy of the early warning, the control device includes: a signal acquisition unit connected to the liquid level monitoring device, a data processing unit and a wireless communication unit connected to the alarm device, and the data processing unit is provided with an alarm trigger module.

[0012] As an improvement to the alarm device in the present application, the alarm device includes: a platform warning system and a bridge warning device, the bridge warning device includes a broadcast unit and a warning light arranged at the bridge head, and the video surveillance unit on the bridge is connected to the platform warning system.

[0013] As an improvement to the solution of the present application, the medium and short bridge fracture disaster warning device also includes: cables and sensors installed on the bridge, and the sensors include but are not limited to pressure transmitters, vibrating wire strain gauges, acceleration sensors, displacement meters, three-axis accelerometers and non-contact road surface condition detectors.

[0014] The beneficial effects of this application are:

[0015] The solution of this application monitors the bridge's status changes in real time by fixing a low-toughness connecting pipe on the side of the bridge and connecting the connecting pipe to a liquid storage tank equipped with a liquid level monitoring device. When the bridge breaks or is damaged, the antifreeze in the connecting pipe leaks, causing the liquid level in the liquid storage tank to drop. When it drops to the minimum level set by the control device, an alarm signal is triggered. The medium- and short-bridge fracture disaster warning device of this solution has the characteristics of simple structure and low cost. It can timely warn of bridge fracture disasters, reduce traffic interruptions and casualties caused by bridge fracture disasters, and is suitable for deployment on various types of medium- and short-bridges.

[0016] Compared to using the method of monitoring liquid level changes in the connecting pipe to provide early warning of bridge fracture disasters, the present application uses the method of monitoring liquid level changes in the liquid storage tank to provide early warning of bridge fracture disasters with higher sensitivity. Specifically, because the liquid storage tank is arranged upright, its horizontal cross-sectional area is relatively small. Therefore, within the same volume liquid level change range, the liquid level change in the liquid storage tank is relatively large, thereby improving the sensitivity of liquid level change monitoring. In contrast, the connecting pipe is placed horizontally, and its horizontal cross-sectional area is larger. Within the same volume liquid level change range, the liquid level change is relatively small, resulting in low sensitivity of liquid level change monitoring.

[0017] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solutions, and the advantages brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the present invention, other technical features included in the technical solutions, and the advantages brought about by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic elevational view of a medium-short bridge fracture disaster warning device according to an embodiment of the present application;

[0019] Figure 2 yes Figure 1 A local enlarged view of point a in the middle;

[0020] Figure 3 yes Figure 1 A partial enlarged view of point b in the middle

[0021] Figure 4 Schematic diagram of the connection of the control device in the embodiment of the present application.

[0022] Description of reference numerals:

[0023] 1. Connecting pipe; 2. Liquid storage tank; 3. Liquid level monitoring device; 4. Control device; 5. Alarm device; 11. First connecting pipe; 12. Second connecting pipe; 41. Signal acquisition unit; 42. Data processing unit; 43. Wireless communication unit; 51. Platform warning system; 52. Bridge warning device; 521. Broadcasting unit; 522. Warning light; 523. Video monitoring unit. DETAILED DESCRIPTION

[0024] The following will be combined with the Figures 1 to 3 The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0025] In response to the problems existing in the existing technologies or products in the background technology, an embodiment of the present application provides a medium-short bridge fracture disaster warning device, which is characterized in that it includes: a connecting pipe 1 fixedly installed on the side of the bridge, a liquid storage tank 2 connected to the connecting pipe 1, a liquid level monitoring device 3 arranged in the liquid storage tank 2, and a control device 4 and an alarm device 5 connected to the bridge, the liquid storage tank 2 contains antifreeze liquid, the control device 4 is respectively connected to the liquid level monitoring device 3 and the alarm device 5 for signals, and the connecting pipe 1 has low toughness.

[0026] Specifically, the connecting pipe 1 has low toughness, that is, the connecting pipe 1 is prone to brittle fracture when subjected to large external force or impact. The connecting pipe 1 is connected to the liquid storage tank 2 so that the liquid level in the liquid storage tank 2 is maintained at a predetermined height when the bridge is in good condition. In this embodiment, the connecting pipe 1 with low toughness is installed on the side of the bridge and connected to the liquid storage tank 2 with a liquid level monitoring device 3 inside. When the bridge is broken or damaged, the connecting pipe 1 quickly undergoes brittle fracture, causing the antifreeze in the connecting pipe 1 to leak, and the liquid level in the liquid storage tank 2 drops due to the leakage. After the liquid level monitoring device 3 in the liquid storage tank 2 detects the change in liquid level, it transmits the signal to the control device 4, and the control device 4 activates the alarm device 5 to promptly warn passing vehicles and pedestrians.

[0027] Optionally, the end of the connecting pipe 1 away from the liquid storage tank 2 is of a closed design, thereby reducing the impact of the external environment on liquid level monitoring and improving the accuracy of bridge fracture disaster warning.

[0028] Optionally, the liquid level monitoring device 3 includes a liquid level detector equipped with a wireless communication module.

[0029] It should be understood that in order to ensure that the early warning is effectively triggered, the control device 4 should pre-set the alarm triggering conditions according to the liquid level in the liquid storage tank 2. In one implementation, the control device 4 includes: a signal acquisition unit 41 connected to the liquid level monitoring device 3, a data processing unit 42 and a wireless communication unit 43 connected to the alarm device 5, and the data processing unit 42 is provided with an alarm triggering module.

[0030] Specifically, the alarm trigger module pre-sets alarm trigger conditions, including the safe liquid level range and minimum liquid level threshold of liquid storage tank 2. Optionally, to improve the reliability of early warning of short- to medium-sized bridge fracture disasters, the alarm trigger condition can also be the rate of decline of the liquid level in liquid storage tank 2. For example, by monitoring the rate of decline of the liquid level in liquid storage tank 2, if the rate of decline exceeds a preset threshold, it indicates that the bridge may be fractured or damaged, and an alarm should be triggered immediately.

[0031] Optionally, the wireless communication unit 43 may use 5G or WiFi for communication.

[0032] The medium-short bridge fracture disaster warning device provided in the embodiment of the present application includes a connecting pipe 1 fixedly installed on the side of the bridge, a liquid storage tank 2 connected to the connecting pipe 1, a liquid level monitoring device 3 arranged in the liquid storage tank 2, and a control device 4 and an alarm device 5 connected to the bridge. Antifreeze is stored in the liquid storage tank 2, and the control device 4 is respectively connected to the liquid level monitoring device 3 and the alarm device 5 for signals. The connecting pipe 1 has low toughness, a simple structure, and low cost. It can timely warn of bridge fracture disasters and reduce traffic interruptions and casualties caused by bridge fracture disasters. It is suitable for deployment on various types of medium-short bridges and has strong practicality.

[0033] In one implementation, the connecting pipe 1 includes a PVC-U pipe.

[0034] Specifically, PVC-U pipe, also known as rigid PVC pipe, is a hard plastic pipe with relatively low toughness. PVC-U pipe also offers excellent chemical, UV, and abrasion resistance, is lightweight, and is low-cost. It is stable and reliable during normal bridge operation and breaks quickly in the event of a bridge failure, triggering a bridge failure warning and improving its timeliness.

[0035] In one implementation, the connecting pipe 1 includes a first connecting pipe 11 and a second connecting pipe 12 fixedly installed on both sides of the bridge respectively.

[0036] Specifically, the dual-side monitoring of the bridge by the first connecting pipe 11 and the second connecting pipe 12 can fully cover the main structural parts of the bridge, ensuring timely detection and early warning regardless of which side of the bridge a fracture occurs, further improving the reliability of the device. Optionally, the first connecting pipe 11 and the second connecting pipe 12 can be connected to different liquid storage tanks 2 respectively to prevent the failure of a proper early warning due to a local failure of the connecting pipe 1 on one side.

[0037] Based on the above embodiment, in one implementation, the connecting pipe 1 is fixed to the side of the bridge via a bracket. Specifically, the bracket ensures that the connecting pipe 1 is stable and reliable during normal operation, and will not move or fall off due to external factors such as wind and vibration. It also ensures that the connecting pipe 1 will rupture when subjected to external impact, normally triggering an alarm.

[0038] In one implementation, the alarm device 5 includes: a platform warning system 51 and a bridge warning device 52 , the bridge warning device 52 includes a broadcast unit 521 and a warning light 522 arranged at the bridge head, and the video monitoring unit 523 on the bridge is connected to the platform warning system 51 .

[0039] Specifically, after the liquid level monitoring device 3 changes and generates a signal, while the control device 4 uploads the alarm signal to the platform early warning system 51, the broadcast unit 521 begins to broadcast the bridge collapse information, and the warning light 522 begins to flash. Relevant staff can promptly understand the on-site situation through the video surveillance displayed on the platform early warning system 51 to prevent the occurrence of secondary disasters.

[0040] In one implementation, the medium- to short-bridge fracture disaster warning device further includes: cables and sensors installed on the bridge. These sensors include, but are not limited to, pressure transmitters, vibrating-wire strain gauges, accelerometers, displacement meters, triaxial accelerometers, and non-contact road surface condition detectors. Specifically, these sensors are connected to the control device 4 and / or the platform warning system 51 via signals. This embodiment improves the accuracy and reliability of the warning device by combining data from multiple sensors to comprehensively assess the bridge's operating conditions.

[0041] In the description of the embodiments of this application, unless otherwise specified or limited, technical terms such as "disposed," "equipped with," "connected," and "installed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integrated connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A medium-short bridge fracture disaster early warning device, characterized in that: include: A connecting pipe (1) fixedly installed on the side of a bridge, a liquid storage tank (2) connected to the connecting pipe (1), a liquid level monitoring device (3) arranged in the liquid storage tank (2), and a control device (4) and an alarm device (5) connected to the bridge, wherein antifreeze liquid is stored in the liquid storage tank (2), the control device (4) is respectively connected to the liquid level monitoring device (3) and the alarm device (5) for signal transmission, and the connecting pipe (1) has low toughness.

2. The medium-short bridge fracture disaster warning device according to claim 1, characterized in that: The connecting pipe (1) comprises a PVC-U pipe.

3. The medium-short bridge fracture disaster warning device according to claim 1, characterized in that: The connecting pipe (1) comprises a first connecting pipe (11) and a second connecting pipe (12) respectively fixedly installed on both sides of the bridge.

4. A medium-short bridge fracture disaster warning device according to any one of claims 1 to 3, characterized in that: The connecting pipe (1) is fixedly installed on the side of the bridge via a bracket.

5. The medium-short bridge fracture disaster warning device according to claim 1, characterized in that: The control device (4) comprises: a signal acquisition unit (41) connected to the liquid level monitoring device (3), a data processing unit (42) and a wireless communication unit (43) connected to the alarm device (5); the data processing unit (42) is provided with an alarm trigger module.

6. The medium-short bridge fracture disaster warning device according to claim 1, characterized in that: The alarm device (5) comprises: a platform warning system (51) and a bridge warning device (52); the bridge warning device (52) comprises a broadcast unit (521) and a warning light (522) arranged at a bridge head; and a video monitoring unit (523) on the bridge is connected to the platform warning system (51).

7. The medium-short bridge fracture disaster warning device according to claim 1, characterized in that: Also includes: Cables and sensors are installed on the bridge, wherein the sensors include but are not limited to pressure transmitters, vibrating wire strain gauges, acceleration sensors, displacement meters, three-axis accelerometers and non-contact road surface condition detectors.

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