Bridge health monitoring system

Abstract

The utility model discloses a bridge health monitoring system, which comprises a plurality of monitoring modules arranged along the longitudinal bridge direction of a bridge pavement and deformation detection modules arranged on piers, and the monitoring modules and the deformation detection modules have the same number and are in one-to-one correspondence; each monitoring module comprises a bottom mounting frame fixedly arranged on the bridge pavement, a settlement monitoring mechanism arranged on the bottom mounting frame, an L-shaped supporting rod arranged at the top of the bottom mounting frame, and a camera and a laser range finder which are arranged at the top of the L-shaped supporting rod; the settlement monitoring mechanism comprises a height adjusting and leveling piece arranged on the bottom mounting frame, a static force level gauge arranged on the height adjusting and leveling piece, and a protective shell covering the static force level gauge; the deformation detection module comprises a plurality of strain gauges arranged in the height direction of the pier. The bridge settlement monitoring system is simple in structure and reasonable in design, settlement monitoring of a bridge pavement and detection of pier deformation are achieved through the settlement monitoring mechanism and the deformation detection module, and monitoring timeliness and accuracy are improved through detection of multiple portions of a bridge.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge monitoring, and in particular relates to a bridge health monitoring system. Background Art

[0002] During the use of a bridge, deformation of the piers and settlement of the bridge deck may cause the bridge to collapse. Therefore, it is necessary to monitor the health of the bridge to ensure that the piers and the bridge deck meet the operational requirements. Alternatively, if the deformation of the piers and the settlement of the bridge deck are monitored in a timely manner, early warning can be given to effectively reduce the danger of bridge collapse to people.

[0003] Existing bridge health monitoring is to manually use measuring instruments to obtain bridge parameter data. Manual detection and data processing are prone to errors, and the work efficiency is low, and timely monitoring cannot be achieved. At present, patent CN202110262736.6 discloses a bridge health monitoring system, which is installed at the bottom of the bridge pavement and is difficult to install. In addition, it only uses a camera to shoot different positions at the bottom of the bridge to check the health of the bridge. The monitoring method is single and the error is large, so it cannot be monitored in a timely and accurate manner.

[0004] Therefore, there is a lack of a bridge health monitoring system with a simple structure and reasonable design. Through the settlement monitoring mechanism and deformation detection module, the settlement monitoring of the bridge pavement and the detection of pier deformation can be realized. It is easy to install and can improve the timeliness and accuracy of monitoring by detecting multiple parts of the bridge. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a bridge health monitoring system in view of the deficiencies in the above-mentioned prior art. The system has a simple structure and a reasonable design. Through a settlement monitoring mechanism and a deformation detection module, the settlement monitoring of the bridge pavement and the detection of pier deformation can be realized. The system is easy to install and the timeliness and accuracy of monitoring can be improved by detecting multiple parts of the bridge.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a bridge health monitoring system, the bridge includes a bridge pavement, a plurality of bridge piers arranged at the bottom of the bridge pavement and extending in the longitudinal direction of the bridge, and an anti-collision guardrail arranged on the airside of the bridge pavement, the anti-collision guardrail includes a plurality of connecting columns arranged in the longitudinal direction of the bridge and fixed on the bridge pavement and a plurality of guardrail rods passing through the connecting columns in the height direction, characterized in that: the monitoring system includes a plurality of monitoring modules arranged in the longitudinal direction of the bridge pavement and a deformation detection module arranged on each bridge pier, the number of the monitoring modules and the deformation detection modules are the same and correspond one to one;

[0007] Each of the monitoring modules includes a bottom mounting frame fixed on the bridge pavement, a settlement monitoring mechanism arranged on the bottom mounting frame, an L-shaped support rod arranged on the top of the bottom mounting frame, and a camera and a laser rangefinder arranged on the top of the L-shaped support rod;

[0008] The settlement monitoring mechanism includes a height adjustment and leveling member arranged on the bottom mounting frame, a static level arranged on the height adjustment and leveling member, and a protective shell covering the static level;

[0009] The deformation detection module includes a plurality of strain gauges arranged along the height direction of the pier.

[0010] The above-mentioned bridge health monitoring system is characterized in that: the bottom mounting frame includes a vertical column fixed on the bridge pavement through an anchor block, a plurality of auxiliary reinforcement members arranged on the vertical column and cooperating with each guardrail, and a bearing base plate arranged on the top of the vertical column;

[0011] Each group of auxiliary reinforcement parts includes an upper clamping plate and a lower clamping plate connected to the vertical column, an arc-shaped pad arranged between the upper clamping plate and the lower clamping plate, and connecting bolts passing through the ends of the upper clamping plate and the lower clamping plate. The guardrail rod is clamped between the upper clamping plate, the lower clamping plate, the arc-shaped pad and the connecting bolts.

[0012] The above-mentioned bridge health monitoring system is characterized in that: the height adjustment and leveling member includes four vertical screws arranged on the bearing base plate, a connecting block sleeved on the vertical screws and a horizontal plate connected to the four connecting blocks, and the static level is arranged on the horizontal plate;

[0013] An upper adjusting nut is arranged on the upper part of the connection block, and a lower adjusting nut is arranged on the lower part of the connection block. Both the upper adjusting nut and the lower adjusting nut are sleeved on the vertical screw rod. A mounting through hole for the vertical screw rod to pass through is arranged in the connection block.

[0014] The above-mentioned bridge health monitoring system is characterized in that: a main controller and a wireless communication module and a strain gauge collector connected to the main controller are arranged in the protective shell;

[0015] The plurality of strain gauges are connected to the strain gauge collector, and the laser rangefinder and the static level are both connected to the main controller;

[0016] An alarm light is arranged on the top of the L-shaped support rod, and the alarm light is controlled by a main controller.

[0017] The above-mentioned bridge health monitoring system is characterized in that: two adjacent static levels are connected by a liquid pipe, and a plurality of supporting rods are arranged on the guardrail at the top between the two adjacent static levels, and the tops of the plurality of supporting rods are connected to a wire trough for laying the liquid pipe.

[0018] The above-mentioned bridge health monitoring system is characterized in that each of the supporting rods includes a clamp installed on the top guardrail, an extension plate arranged on the top of the clamp, a straight screw arranged on the top of the extension plate, and a threaded outer cylinder sleeved on the straight screw and threadedly connected, and a bearing plate arranged on the top of the threaded outer cylinder, a locking nut is sleeved on the straight screw, and the wire groove is arranged on the bearing plate.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1. The utility model arranges a bottom mounting frame fixedly mounted on the bridge pavement, so that the settlement monitoring mechanism on the bottom mounting frame settles synchronously with the bridge pavement, thereby realizing the settlement monitoring of the bridge pavement; in addition, the arrangement of the bottom mounting frame not only realizes the installation of the settlement monitoring mechanism, but also realizes the installation of the L-shaped support rod, and the structure is compact and convenient for overall disassembly and assembly.

[0021] 2. The utility model is provided with a height-adjusting and leveling member, which can not only realize the installation of the static level, but also realize the installation height and horizontal adjustment of the static level by adjusting the height-adjusting and leveling member, thereby improving the adaptability and ensuring that the initial installation height of the initial static level is the same, thereby ensuring the accuracy of subsequent measurements.

[0022] 3. The utility model sets a settlement monitoring mechanism and installs it on the bridge pavement to realize the settlement monitoring of the bridge pavement; the deformation detection module is formed by mounting the strain gauge on the bridge pier to realize the detection of the deformation of the bridge pier, and the installation is convenient. Through the comprehensive monitoring of both the bridge pier and the bridge deck, the timeliness and accuracy of the monitoring are improved.

[0023] In summary, the utility model has a simple structure and a reasonable design. It realizes the settlement monitoring of the bridge pavement and the detection of pier deformation through the settlement monitoring mechanism and the deformation detection module. It is easy to install and can improve the timeliness and accuracy of monitoring by detecting multiple parts of the bridge.

[0024] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 A structural schematic diagram of a settlement monitoring mechanism of the utility model.

[0027] Figure 3 A schematic structural diagram of a support rod of the utility model.

[0028] Figure 4 This is a principle block diagram of the utility model.

[0029] Description of reference numerals:

[0030] 2—strain gauge; 3—bridge pier;

[0031] 4—bridge pavement; 5—connecting column; 5-1—guardrail;

[0032] 6—vertical column; 6-1—upper splint; 6-2—lower splint;

[0033] 6-3—arc-shaped pad; 6-4—connecting bolt; 6-5—anchor block;

[0034] 7—carrying substrate; 8—protective shell; 8-1—main controller;

[0035] 8-2—strain gauge collector; 8-3—wireless communication module; 9—level bubble;

[0036] 10—L-shaped support rod; 11—laser rangefinder; 12—camera;

[0037] 13—static level; 13-1—vertical screw; 13-2—connecting block;

[0038] 13-3—Horizontal plate; 13-4—Upper adjusting nut; 13-5—Lower adjusting nut;

[0039] 14—warning light; 15—support rod; 15-1—hoop;

[0040] 15-2—Extension plate; 15-3—Straight screw; 15-4—Threaded outer cylinder;

[0041] 15-5—carrying plate; 15-6—locking nut;

[0042] 17—Wire duct; 18—Liquid pipe. DETAILED DESCRIPTION

[0043] like Figures 1 to 4A bridge health monitoring system is shown, the bridge comprises a bridge pavement 4, a plurality of piers 3 arranged at the bottom of the bridge pavement 4 and extending in the longitudinal direction of the bridge, and a crash barrier arranged on the airside of the bridge pavement 4, the crash barrier comprises a plurality of connecting columns 5 arranged in the longitudinal direction of the bridge and fixed on the bridge pavement 4, and a plurality of guardrail rods 5-1 passing through the connecting columns 5 in the height direction, the monitoring system comprises a plurality of monitoring modules arranged in the longitudinal direction of the bridge pavement 4 and a deformation detection module arranged on each pier 3, the number of the monitoring modules and the deformation detection modules being the same and corresponding one to one;

[0044] Each of the monitoring modules includes a bottom mounting frame fixed on the bridge pavement 4, a settlement monitoring mechanism arranged on the bottom mounting frame, an L-shaped support rod 10 arranged on the top of the bottom mounting frame, and a camera 12 and a laser rangefinder 11 arranged on the top of the L-shaped support rod 10;

[0045] The settlement monitoring mechanism includes a height adjustment and leveling member arranged on the bottom mounting frame, a static level 13 arranged on the height adjustment and leveling member, and a protective shell 8 covering the static level 13;

[0046] The deformation detection module includes a plurality of strain gauges 2 arranged along the height direction of the pier 3 .

[0047] In this embodiment, the bottom mounting frame includes a vertical column 6 fixed on the bridge pavement 4 through an anchor block 6-5, a plurality of auxiliary reinforcement members arranged on the vertical column 6 and cooperating with and clamped on each guardrail 5-1, and a bearing base plate 7 arranged on the top of the vertical column 6;

[0048] Each group of the auxiliary reinforcement parts includes an upper clamp plate 6-1 and a lower clamp plate 6-2 connected to the vertical column 6, an arc-shaped pad plate 6-3 arranged between the upper clamp plate 6-1 and the lower clamp plate 6-2, and a connecting bolt 6-4 passing through the ends of the upper clamp plate 6-1 and the lower clamp plate 6-2. The guardrail rod 5-1 is clamped between the upper clamp plate 6-1, the lower clamp plate 6-2, the arc-shaped pad plate 6-3 and the connecting bolt 6-4.

[0049] In this embodiment, the height adjustment and leveling member includes four vertical screws 13-1 arranged on the carrier substrate 7, a connecting block 13-2 sleeved on the vertical screws 13-1, and a horizontal plate 13-3 connected to the four connecting blocks 13-2, and the static level 13 is arranged on the horizontal plate 13-3;

[0050] An upper adjusting nut 13-4 is provided at the upper part of the connecting block 13-2, and a lower adjusting nut 13-5 is provided at the lower part of the connecting block 13-2. The upper adjusting nut 13-4 and the lower adjusting nut 13-5 are both sleeved on the vertical screw rod 13-1, and a mounting through hole for the vertical screw rod 13-1 to pass through is provided in the connecting block 13-2.

[0051] In this embodiment, the protective shell 8 is provided with a main controller 8-1 and a wireless communication module 8-3 and a strain gauge collector 8-2 connected to the main controller 8-1;

[0052] The plurality of strain gauges 2 are connected to the strain gauge collector 8-2, and the laser rangefinder 11 and the static level 13 are both connected to the main controller 8-1;

[0053] An alarm light 14 is provided on the top of the L-shaped support rod 10, and the alarm light 14 is controlled by the main controller 8-1.

[0054] In this embodiment, two adjacent static levels 13 are connected by a liquid pipe 18, and a plurality of support rods 15 are arranged on the guardrail 5-1 at the top between the two adjacent static levels 13, and the tops of the plurality of support rods 15 are connected to a wire groove 17 for laying the liquid pipe 18.

[0055] In this embodiment, each of the support rods 15 includes a clamp 15-1 installed on the top guardrail rod 5-1, an extension plate 15-2 arranged on the top of the clamp 15-1, a straight screw 15-3 arranged on the top of the extension plate 15-2, and a threaded outer cylinder 15-4 sleeved on the straight screw 15-3 and threadedly connected, and a bearing plate 15-5 arranged on the top of the threaded outer cylinder 15-4, a locking nut 15-6 is sleeved on the straight screw 15-3, and the wire groove 17 is arranged on the bearing plate 15-5.

[0056] In this embodiment, in actual use, the protective shell 8 can be detachably connected to the supporting substrate 7 by bolts, which is convenient for disassembly and assembly.

[0057] In this embodiment, in actual use, the protective shell 8 and the L-shaped support rod 10 are staggered and arranged, and the protective shell 8 and the L-shaped support rod 10 are close to each other.

[0058] In this embodiment, in actual use, a locking nut is provided on the connecting bolt 6 - 4 to ensure reinforcement stability.

[0059] In this embodiment, a plurality of strain gauges 2 are attached to the side walls of the pier 3, which reduces the difficulty of installation; and enables the strain gauges and the pier 3 to deform synchronously when bearing loads, thereby reducing monitoring errors; secondly, multi-position detection of the pier 3 in height direction is achieved.

[0060] In this embodiment, when used, multiple strain gauges 2 are pasted on the outer wall of the pier 3 along the height direction to ensure that the strain gauge and the pier 3 are deformed together. In this way, during bridge health monitoring, when the pier 3 is deformed, the strain gauge will deform together. At this time, the resistance wire in the strain gauge will change its resistance due to its mechanical deformation.

[0061] In this embodiment, when used specifically, the strain gauge 2 may refer to the FLM / WFLM series strain gauges or other strain gauges that can achieve the same function.

[0062] In this embodiment, when used specifically, the strain gauge collector 8-2 uses a conventional multi-channel strain gauge data acquisition module with an RS485 interface in the art, so that the plurality of strain gauges 2 are respectively connected to the strain gauge acquisition interface of the strain gauge collector 8-2;

[0063] In this embodiment, during specific use, the RS485 interface of the strain gauge collector 8-2 is connected to the RS485 interface of the main controller 8-1 via an RS485 bus.

[0064] In this embodiment, when used, the camera 12 can adopt a 4G, 5G or WIFI camera, which is wirelessly connected and communicated with a remote monitoring computer or a monitoring mobile phone.

[0065] In this embodiment, when used, the laser rangefinder 11 can adopt a TOF laser rangefinder sensor, whose 485 interface is connected to the 485 interface of the main controller 8-1 through the RS485 bus, and can directly output the measured distance data through the 485 interface, which is convenient to use.

[0066] In this embodiment, when used specifically, the main controller 8 - 1 can be a single chip microcomputer, an ARM microcontroller, etc., which has an RS485 interface connection.

[0067] In this embodiment, when used specifically, the wireless communication module 8-3 is a 4G, 5G or WIFI wireless communication module, which is connected to the 485 interface of the main controller 8-1 via the RS485 bus. The wireless communication module 8-3 is set so that the main controller 8-1 can communicate with the remote monitoring computer or monitoring mobile phone wirelessly through the wireless communication module 8-3, thereby realizing the data transmission of the distance, settlement amount and strain amount received by the main controller 8-1, which is convenient for remote monitoring.

[0068] In this embodiment, when used, the static level 13 can be a pressure difference static level, and its signal line is connected to the main controller 8-1 through the RS485 bus.

[0069] In this embodiment, when in use, the installation of the static level 13 refers to the conventional installation in the art to achieve settlement monitoring of each measuring point.

[0070] In this embodiment, when in use, a support rod 15 is provided to support the wire trough 17 and adjust the height of the wire trough 17, thereby meeting the installation height requirement of the static level 13 and having good adaptability; and the wire trough 17 is provided to realize the installation protection of the liquid pipe 18 and the signal line.

[0071] In this embodiment, a horizontal plate 13-3 is provided to realize the installation of the static level 13, and the installation height of the static level 13 is adjusted by adjusting the connecting block 13-2 to move up and down along the vertical screw 13-1, thereby realizing the adjustment of the installation height of the static level 13, thereby improving the adaptability and ensuring that the initial installation height of the initial static level 13 is the same, thereby reducing subsequent measurement errors; in addition, an upper adjusting nut 13-4 and a lower adjusting nut 13-5 are provided, which can be adjusted as required, and can also be adjusted into place and then locked against the connecting block 13-2 by the upper adjusting nut 13-4 and the lower adjusting nut 13-5.

[0072] In this embodiment, when used specifically, the alarm light 14 can refer to a conventional warning light, and the main controller 8-1 is connected to the alarm light 14, referring to conventional alarms and connections in the art, as long as the alarm reminder can be achieved.

[0073] In this embodiment, when used, a bottom mounting frame is fixed on the bridge pavement 4, so that the settlement monitoring mechanism on the bottom mounting frame settles synchronously with the bridge pavement, thereby realizing the settlement monitoring of the bridge pavement.

[0074] In the present utility model, when it is used, multiple strain gauges 2 are pasted on the pier 3. Afterwards, in the process of bridge health monitoring, the strain gauge 2 monitors the deformation of the pier 3 in real time. When the pier 3 is deformed, the strain gauge is deformed synchronously. The signal detected by the strain gauge 2 is sent to the strain gauge collector 8-2. The strain gauge collector 8-2 collects the signal value of each strain gauge and sends it to the main controller 8-1. The main controller 8-1 receives the strain signal value. If the measured strain signal value exceeds the required value, it means that the deformation of the pier 3 exceeds the limit, and the main controller 8-1 alarms through the alarm 5-1.

[0075] During the bridge health monitoring process, the camera 12 collects images on the bridge pavement 4 and sends the collected bridge pavement images to a monitoring computer or a monitoring mobile phone, so that the monitoring personnel can remotely check whether there are abnormal conditions such as cracks on the bridge pavement;

[0076] The laser rangefinder 11 monitors the distance between it and the bridge pavement 4, and sends the detected distance to the main controller 8-1. The change in the distance can be used to determine whether the position of the monitoring module is offset;

[0077] The static level 13 is used to detect the settlement at the measuring point and the detected settlement is sent to the main controller 8-1. If the laser rangefinder 11 monitors that the distance between it and the bridge pavement 4 meets the initial value and there is settlement at the measuring point, it means that the bridge pavement 4 has settled, and the main controller 8-1 sends an alarm through the alarm 5-1.

[0078] In summary, the utility model has a simple structure and a reasonable design. Through the settlement monitoring mechanism and the deformation detection module, the settlement monitoring of the bridge pavement and the detection of the pier deformation are realized. By detecting multiple parts of the bridge, the timeliness and accuracy of the monitoring are improved.

[0079] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A bridge health monitoring system, the bridge comprising a bridge pavement (4), a plurality of bridge piers (3) arranged at the bottom of the bridge pavement (4) and extending in the longitudinal direction of the bridge, and a crash barrier arranged on the airside of the bridge pavement (4), the crash barrier comprising a plurality of connecting columns (5) arranged in the longitudinal direction of the bridge and fixed on the bridge pavement (4) and a plurality of guardrail rods (5-1) passing through the connecting columns (5) in the height direction, characterized in that: The monitoring system comprises a plurality of monitoring modules arranged along the longitudinal direction of the bridge pavement (4) and a deformation detection module arranged on each bridge pier (3), wherein the number of the monitoring modules and the deformation detection modules are the same and correspond one to one; Each monitoring module comprises a bottom mounting frame fixed on the bridge pavement (4), a settlement monitoring mechanism arranged on the bottom mounting frame, an L-shaped support rod (10) arranged on the top of the bottom mounting frame, and a camera (12) and a laser rangefinder (11) arranged on the top of the L-shaped support rod (10); The settlement monitoring mechanism comprises a height adjustment and leveling member arranged on the bottom mounting frame, a static level (13) arranged on the height adjustment and leveling member, and a protective shell (8) arranged outside the static level (13); The deformation detection module comprises a plurality of strain gauges (2) arranged along the height direction of the pier (3).

2. A bridge health monitoring system according to claim 1, characterized in that: The bottom mounting frame comprises a vertical column (6) fixed on the bridge pavement (4) via an anchor block (6-5), a plurality of auxiliary reinforcement members arranged on the vertical column (6) and cooperatingly clamped on each guardrail rod (5-1), and a bearing base plate (7) arranged on the top of the vertical column (6); Each group of the auxiliary reinforcement members comprises an upper clamping plate (6-1) and a lower clamping plate (6-2) connected to the vertical column (6), an arc-shaped pad (6-3) arranged between the upper clamping plate (6-1) and the lower clamping plate (6-2), and connecting bolts (6-4) passing through the ends of the upper clamping plate (6-1) and the lower clamping plate (6-2); the guardrail rod (5-1) is clamped between the upper clamping plate (6-1), the lower clamping plate (6-2), the arc-shaped pad (6-3) and the connecting bolts (6-4).

3. A bridge health monitoring system according to claim 1, characterized in that: The height adjustment and leveling member comprises four vertical screw rods (13-1) arranged on a bearing base plate (7), a connecting block (13-2) sleeved on the vertical screw rods (13-1), and a horizontal plate (13-3) connected to the four connecting blocks (13-2), and the static level (13) is arranged on the horizontal plate (13-3); An upper adjusting nut (13-4) is arranged at the upper part of the connecting block (13-2), and a lower adjusting nut (13-5) is arranged at the lower part of the connecting block (13-2); the upper adjusting nut (13-4) and the lower adjusting nut (13-5) are both sleeved on the vertical screw rod (13-1); and a mounting through hole for the vertical screw rod (13-1) to pass through is arranged in the connecting block (13-2).

4. A bridge health monitoring system according to claim 1, characterized in that: A main controller (8-1) and a wireless communication module (8-3) and a strain gauge collector (8-2) connected to the main controller (8-1) are arranged in the protective shell (8); The plurality of strain gauges (2) are connected to the strain gauge collector (8-2), and the laser rangefinder (11) and the static level (13) are both connected to the main controller (8-1); An alarm light (14) is provided on the top of the L-shaped support rod (10), and the alarm light (14) is controlled by a main controller (8-1).

5. A bridge health monitoring system according to claim 1, characterized in that: Two adjacent static levels (13) are connected via a liquid pipe (18), and a plurality of support rods (15) are provided on the guardrail (5-1) located at the top between the two adjacent static levels (13), and the tops of the plurality of support rods (15) are connected to a wire groove (17) for laying the liquid pipe (18).

6. A bridge health monitoring system according to claim 5, characterized in that: Each of the support rods (15) comprises a clamp (15-1) mounted on the top guardrail rod (5-1), an extension plate (15-2) arranged on the top of the clamp (15-1), a straight screw (15-3) arranged on the top of the extension plate (15-2), a threaded outer cylinder (15-4) sleeved on the straight screw (15-3) and threadedly connected, and a bearing plate (15-5) arranged on the top of the threaded outer cylinder (15-4), a locking nut (15-6) sleeved on the straight screw (15-3), and the wire groove (17) is arranged on the bearing plate (15-5).

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