Road and bridge settlement distance detection device and method

Abstract

The invention relates to the technical field of road and bridge settlement detection, in particular to a road and bridge settlement distance detection device and method.The road and bridge settlement distance detection device comprises a detection pipe and detection rings, the detection pipe is a hard pipe, the two ends of the detection pipe are each provided with a supporting structure, the supporting structures are arranged on the two sides of a bridge, and the multiple detection rings are evenly arranged in the direction of the detection pipe; the detection ring is fixedly connected with the bridge, the detection ring is arranged on the outer side of the detection pipe, a pressure sensor is arranged in the detection ring, the pressure sensor is connected with monitoring equipment through an electric wire, the pressure sensor is connected with a first elastic piece, and the other end of the first elastic piece abuts against the surface of the detection pipe; the effect of reducing the cost of the road and bridge settlement distance detection device is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of road and bridge settlement detection, and in particular to a road and bridge settlement distance detection device and method. Background Art

[0002] Road bridge is a kind of bridge, generally composed of roadbed, pavement, bridge, tunnel engineering and traffic engineering facilities; road bridge settlement deformation is the vertical deformation or sinking caused by the compression of foundation soil under the load of bridge. When the settlement is too large, the height of the road bridge will be reduced and the use will be affected; and uneven settlement will cause greater harm to the road bridge, which will cause additional stress on the road bridge and cause cracks, or even local component fracture, endangering the safety of the road bridge and the vehicles on the road.

[0003] Traditional road and bridge settlement detection equipment usually uses a static level for monitoring. The static level is a high-precision level measurement system based on the principle of a communicating vessel. The installation of the static level requires professional technicians, and the installation process is relatively complicated, which also increases the installation cost. In addition, in order to ensure the accuracy and reliability of the instrument, regular maintenance and calibration are required, which will also incur certain costs. Summary of the invention

[0004] In order to reduce the cost of a road and bridge settlement distance detection device, the present application provides a road and bridge settlement distance detection device.

[0005] The above technical objectives of this application are achieved through the following technical solutions: A device for detecting the settlement distance of a road and bridge comprises a detection tube and a detection ring. The detection tube is a hard tube. Support structures are arranged at both ends of the detection tube. The support structures are arranged on both sides of the bridge. There are multiple detection rings. The multiple detection rings are evenly arranged along the direction of the detection tube. The detection ring is fixedly connected to the bridge and is arranged on the outside of the detection tube. A pressure sensor is arranged inside the detection ring. The pressure sensor is connected to a monitoring device through an electric wire. The pressure sensor is connected to a first elastic member, and the other end of the first elastic member is against the surface of the detection tube.

[0006] By adopting the above scheme, when settlement occurs at a certain place of the road bridge, the detection ring connected to the bridge at that place moves downward together with the bridge, while the detection tube is fixed by the supporting structure, so the detection tube does not move downward. Therefore, the detection tube and the detection ring will have relative displacement, so that the detection tube compresses the first elastic part, so that the pressure applied to the pressure sensor by the first elastic part increases. The operator monitors the pressure change of the pressure sensor through the monitoring equipment, so as to detect the distance of the road bridge being lowered. The cost of the detection tube and the detection ring is relatively low, thereby reducing the cost of the bridge settlement distance detection device.

[0007] Optionally, the detection ring includes an upper ring and a lower ring, the pressure sensor is arranged in the upper ring, and a clamping structure for connecting the upper ring and the lower ring is arranged between the upper ring and the lower ring.

[0008] By adopting the above scheme, when installing the detection device, the upper ring and the lower ring can be separated first, and then the detection tube can be placed between the upper ring and the lower ring, and then the upper ring and the lower ring are closed by the snap-fit ​​structure, so that the detection tube can be passed through the detection ring more conveniently, thereby making the installation of the detection structure more convenient.

[0009] Optionally, the locking structure includes a locking rod and a locking pin, the locking rod is fixedly connected to the end of the lower ring, a locking groove is opened at the end of the upper ring, a pin groove is opened on the side surface of the locking groove, and a locking pin is slidably connected in the pin groove, and a spring is fixedly connected to one end of the locking pin, and the two ends of the spring are respectively connected to the pin groove and the locking pin, and the locking pin is inclined away from one end of the spring, and the inclined surface faces the notch of the locking groove, and a locking groove is opened on the side surface of the locking rod, and when the upper ring and the lower ring are connected, the locking rod is inserted into the locking groove, and the locking pin is inserted into the slot.

[0010] By adopting the above scheme, when the upper ring and the lower ring need to be connected, the clamping rod is inserted into the clamping groove, and the clamping rod contacts the inclined surface of the clamping pin, thereby pressing the clamping pin into the pin groove until the clamping rod is fully inserted into the clamping groove. At this time, the clamping pin is facing the clamping groove, and the spring rebounds to press the clamping pin into the clamping groove, thereby clamping the clamping rod in the clamping groove, so that the upper ring and the lower ring are fixedly connected.

[0011] Optionally, a threaded hole is provided on the surface of the upper ring, the threaded hole is connected to the pin groove, an unlocking bolt is threadedly connected to the threaded hole, and the end of the unlocking bolt is spherical, and a bevel groove is provided on the surface of the pin. When the unlocking bolt is fully screwed into the threaded hole, the end of the unlocking bolt is inserted into the bevel groove, and the unlocking bolt drives the pin to move in the direction of the compression spring.

[0012] By adopting the above scheme, when the upper ring and the lower ring need to be opened, the unlocking bolt is rotated so that the spherical end of the unlocking bolt contacts the surface of the bevel groove, and then the unlocking bolt is continued to be rotated to move the bayonet pin in the direction of the compression spring, so that the bayonet pin completely enters the bayonet groove, and then the bayonet rod is removed from the bayonet groove, and the upper ring and the lower ring can be opened.

[0013] Optionally, the upper ring surface is fixedly connected to a slide rail, the slide rail is slidably connected to a slider, the sliding direction of the slider is the same as the deformation direction of the first elastic member, the slider is fixedly connected to the end of the first elastic member away from the pressure sensor, and an arc groove is provided at the end of the slider away from the first elastic member, and the arc groove abuts against the surface of the detection tube.

[0014] By adopting the above scheme, the detection tube is allowed to enter the arc groove of the slider, so that the detection tube and the slider fit more closely and are not easily separated from the slider. The slide rail limits the moving direction of the slider, so that the slider can only slide in the direction of compressing the first elastic member, so that the force on the first elastic member is always located in the deformation direction of the first elastic member, thereby making the pressure change measured by the pressure sensor more accurate, and thus making the detection of the settlement distance of the road and bridge more accurate.

[0015] Optionally, the lower ring is threadedly connected to a threaded rod, and the threaded rod is rotatably connected to a support seat at one end away from the lower ring. An arc groove is provided on the side of the support seat away from the threaded rod, and the detection tube is located in the arc groove.

[0016] By adopting the above solution, there may be some errors in the height of each detection ring during construction. Therefore, a support seat is set to support the detection tube. The height of the support seat can be adjusted by rotating the threaded rod so that the support seat can support the detection tube within a certain height range.

[0017] Optionally, the detection tube includes a plurality of tube sections, and a connection structure for connecting the tube sections is provided at the connection between adjacent tube sections.

[0018] By adopting the above solution, since the bridge is long, the detection tube being too long will greatly increase the difficulty of installing the detection tube, so the detection tube is divided into multiple tube sections to make the installation of the detection tube more convenient.

[0019] Optionally, the connecting structure includes an inner tube and an outer tube, which are respectively arranged at both ends of the pipe section, and the outer diameter of the inner tube is less than or equal to the inner diameter of the outer tube, threaded holes are opened on the surface of the outer tube and the surface of the inner tube, and the number of threaded holes of the outer tube and the inner tube is the same, and a fixing bolt is connected to the threaded tube of the outer tube. When the pipe section is connected, the inner tube is inserted into the outer tube and the fixing bolt is screwed into the threaded hole of the inner tube.

[0020] By adopting the above scheme, when installing the detection tube, the inner tube is inserted into the outer tube, and the threaded hole of the inner tube is aligned with the threaded hole of the outer tube, and then the fixing bolt is screwed into the threaded hole of the inner tube to fix the inner tube to the outer tube and make it difficult for the outer tube and the inner tube to separate.

[0021] Optionally, a wire hole is opened on the surface of the detection tube, and the wires of the pressure sensor pass through the wire hole and are connected to the detection tube.

[0022] By adopting the above solution, the wires of the pressure sensor are passed through the wire hole and then connected to the power box monitoring structure, so that the detection tube protects the wires, making the wires of the pressure sensor less likely to be damaged.

[0023] A method for using a road and bridge settlement distance detection device comprises the following steps: S1. Install the detection rings at fixed intervals on the bridge surface; S2, passing the detection tubes through the detection ring in sequence, and making the first elastic member abut against the surface of the detection tube; S3. Use a supporting structure to fix and support both ends of the detection tube; S4. Power on the pressure sensor and connect it to the monitoring equipment. The operator can observe the pressure changes of the pressure sensor through the monitoring equipment to monitor the settlement distance of the bridge.

[0024] In summary, this application has the following technical effects: 1. By setting up a detection tube and a detection ring, the detection tube passes through the detection ring, and the elastic member abuts against the surface of the detection tube, the bridge settlement distance is detected through the pressure change of the pressure sensor, thereby reducing the cost of the road and bridge settlement distance detection device; 2. The clamping structure makes it easier for the detection tube to pass through the detection ring; 3. By arranging the detection tube into multiple sections, it is more convenient to install the detection tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of a part of the structure of the detection ring that this application intends to emphasize; Figure 3 This is a partial structural cross-sectional view of the clamping structure that this application intends to emphasize; Figure 4 This is a partial structural cross-sectional view of the unlocking bolt that this application intends to emphasize; Figure 5 This is an exploded view of a portion of the structure intended to emphasize the connection structure.

[0026] In the figure, 1. detection tube; 11. pipe section; 111. wire hole; 12. connection structure; 121. inner tube; 122. outer tube; 1221. fixing bolt; 2. detection ring; 21. upper ring; 211. snap-fit ​​groove; 212. pin groove; 22. lower ring; 3. snap-fit ​​structure; 31. snap-fit ​​rod; 311. snap-fit ​​groove; 32. snap pin; 321. bevel groove; 33. spring; 34. unlocking bolt; 4. supporting structure; 5. pressure sensor; 51. first elastic member; 52. slider; 53. slide rail; 6. support seat; 61. threaded rod. DETAILED DESCRIPTION

[0027] The present application is further described in detail below with reference to the accompanying drawings.

[0028] Reference Figure 1 and Figure 2 A device for detecting the settlement distance of a road and bridge comprises a detection tube 1 and a detection ring 2. The detection tube 1 is a hard tube. Support structures 4 are arranged at both ends of the detection tube 1. The support structures 4 are arranged on both sides of the bridge. A plurality of detection rings 2 are arranged. The plurality of detection rings 2 are evenly arranged along the direction of the detection tube 1. The detection ring 2 is fixedly connected to the bridge, and the detection ring 2 is arranged on the outside of the detection tube 1. A pressure sensor 5 is arranged in the detection ring 2. The pressure sensor 5 is connected to the monitoring equipment through an electric wire. The pressure sensor 5 is connected to a first elastic member 51, and the other end of the first elastic member 51 is against the surface of the detection tube 1. When settlement occurs at a certain place of the road bridge, the detection ring 2 connected to the bridge at that place moves downward together with the bridge, while the detection tube 1 is fixed by the supporting structure 4, so the detection tube 1 does not move downward. Therefore, the detection tube 1 and the detection ring 2 will have relative displacement, so that the detection tube 1 compresses the first elastic member 51, so that the pressure applied to the pressure sensor 5 by the first elastic member 51 increases. The operator monitors the pressure change of the pressure sensor 5 through the monitoring equipment, thereby detecting the distance of the road bridge being lowered. The cost of the detection tube 1 and the detection ring 2 is relatively low, thereby reducing the cost of the bridge settlement distance detection device.

[0029] Figure 2 and Figure 3 The detection ring 2 includes an upper ring 21 and a lower ring 22, the pressure sensor 5 is arranged in the upper ring 21, a clamping structure 3 for connecting the upper ring 21 and the lower ring 22 is arranged between the upper ring 21 and the lower ring 22, and the lower ring 22 is fixedly connected to the bridge body. The clamping structure 3 includes a clamping rod 31 and a clamping pin 32. The clamping rod 31 is fixedly connected to the end of the lower ring 22. A clamping groove 211 is provided at the end of the upper ring 21. A pin groove 212 is provided on the side surface of the clamping groove 211. The clamping pin 32 is slidably connected in the pin groove 212. One end of the clamping pin 32 is fixedly connected to a spring 33. Both ends of the spring 33 are respectively connected to the pin groove 212 and the clamping pin 32. The clamping pin 32 is inclined away from one end of the spring 33, and the inclined surface faces the notch of the clamping groove 211. A clamping groove 311 is provided on the side surface of the clamping rod 31. When the upper ring 21 and the lower ring 22 are connected, the clamping rod 31 is inserted into the clamping groove 211, and the clamping pin 32 is inserted into the clamping groove 311. When the upper ring 21 and the lower ring 22 need to be connected, the clamping rod 31 is inserted into the clamping groove 211, and the clamping rod 31 contacts the inclined surface of the clamping pin 32, thereby pressing the clamping pin 32 into the pin groove 212, until the clamping rod 31 is completely inserted into the clamping groove 211. At this time, the clamping pin 32 is facing the clamping groove 311, and the spring 33 rebounds to press the clamping pin 32 into the clamping groove 311, thereby clamping the clamping rod 31 in the clamping groove 211, so that the upper ring 21 and the lower ring 22 are fixedly connected. This makes it more convenient to set the detection tube 1 between the upper ring 21 and the lower ring 22, thereby making it more convenient to install the detection device.

[0030] Reference Figure 3 and Figure 4The upper ring 21 has a threaded hole on its surface, which is connected to the pin slot 212. An unlocking bolt 34 is threadedly connected to the threaded hole, and the end of the unlocking bolt 34 is spherical. A bevel groove 321 is provided on the surface of the bayonet 32. When the unlocking bolt 34 is fully screwed into the threaded hole, the end of the unlocking bolt 34 is inserted into the bevel groove 321, and the unlocking bolt 34 drives the bayonet 32 ​​to move in the direction of the compression spring 33. When the upper ring 21 and the lower ring 22 need to be opened, the unlocking bolt 34 is rotated so that the spherical end of the unlocking bolt 34 contacts the surface of the bevel groove 321, and then the unlocking bolt 34 is continuously rotated so that the bayonet 32 ​​moves in the direction of the compression spring 33, so that the bayonet 32 ​​completely enters the bayonet groove 311, and then the clamping rod 31 is removed from the clamping groove 211, and the upper ring 21 and the lower ring 22 can be opened.

[0031] Reference Figure 2 The surface of the upper ring 21 is fixedly connected with a slide rail 53, which is located on opposite sides of the first elastic member 51, and the planes where the two slide rails 53 are located are perpendicular to the axis of the detection tube 1. The slide rail 53 is slidably connected with a slider 52, and the sliding direction of the slider 52 is the same as the deformation direction of the first elastic member 51. The slider 52 is fixedly connected to the end of the first elastic member 51 away from the pressure sensor 5, and the end of the slider 52 away from the first elastic member 51 is provided with an arc groove, and the arc groove abuts against the surface of the detection tube 1. The detection tube 1 enters the arc groove of the slider 52, so that the detection tube 1 and the slider 52 fit more closely, and the detection tube 1 and the slider 52 are not easy to separate, and the slide rail 53 limits the moving direction of the slider 52, so that the slider 52 can only slide in the direction of compressing the first elastic member 51, so that the force of the first elastic member 51 is always located in the deformation direction of the first elastic member 51, so that the pressure change measured by the pressure sensor 5 is more accurate, so that the settlement distance detection of the road bridge is more accurate.

[0032] Reference Figure 2 The lower ring 22 is threadedly connected with a threaded rod 61, and the threaded rod 61 is rotatably connected with a support seat 6 at one end away from the lower ring 22. The support seat 6 is provided with an arc groove on the side away from the threaded rod 61, and the detection tube 1 is located in the arc groove. During construction, there may be some errors in the height of each detection ring 2, so the support seat 6 is set to support the detection tube 1 and increase the stress points of the detection tube 1. The height of the support seat 6 can be increased by rotating the threaded rod 61, so that the support seat 6 can support the detection tube 1 within a certain height range.

[0033] Reference Figure 1 and Figure 5The detection tube 1 includes a plurality of tube sections 11, and a connection structure 12 for connecting the tube sections 11 is provided at the connection of adjacent tube sections 11. The connection structure 12 includes an inner tube 121 and an outer tube 122, which are respectively arranged at both ends of the tube section 11, and the outer diameter of the inner tube 121 is less than or equal to the inner diameter of the outer tube 122, threaded holes are provided on the surface of the outer tube 122 and the surface of the inner tube 121, and the number of threaded holes of the outer tube 122 and the inner tube 121 is the same, and a fixing bolt 1221 is threadedly connected to the threaded tube of the outer tube 122, and when the tube section 11 is connected, the inner tube 121 is inserted into the outer tube 122, and the fixing bolt 1221 is screwed into the threaded hole of the inner tube 121. A limit slide groove is provided on the inner surface of the outer sleeve 122, and a limit slide bar is fixedly provided on the outer surface of the inner tube 121, and the notch of the limit slide groove is inclined, so that the limit can slide into the limit slide groove more smoothly, so that the operator can more conveniently align the threaded hole of the outer sleeve 122 with the threaded hole of the inner tube 121 during installation. Since the bridge is long, the detection tube 1 is too long, which greatly increases the difficulty of installing the detection tube 1. Therefore, the detection tube 1 is divided into a plurality of tube sections 11, so that the installation of the detection tube 1 is more convenient. Insert the inner tube 121 into the outer sleeve 122, and align the threaded hole of the inner tube 121 with the threaded hole of the outer sleeve 122, and then screw the fixing bolt 1221 into the threaded hole of the inner tube 121, so that the inner tube 121 is fixed to the outer sleeve 122, and the outer sleeve 122 and the inner tube 121 are not easily separated.

[0034] In addition, this embodiment also discloses a method for using a road and bridge settlement distance detection device, comprising the following steps: S1, install the detection rings 2 at intervals on the bridge surface; S2, passing the detection tube 1 through the detection ring 2 in sequence, and making the first elastic member 51 abut against the surface of the detection tube 1; S3, using the support structure 4 to fix and support both ends of the detection tube 1; S4. Power on the pressure sensor 5 and connect it to the monitoring device. The operator can observe the pressure change of the pressure sensor 5 through the monitoring device, thereby monitoring the settlement distance of the bridge.

[0035] The specific implementation principle of the present application is: when settlement occurs at a certain place of the road bridge, the detection ring 2 connected to the bridge at that place moves downward together with the bridge, and the detection tube 1 is supported by the support structure 4 and the support seat 6, so the detection tube 1 does not move downward, so the detection tube 1 and the detection ring 2 will have relative displacement, so that the detection tube 1 squeezes the slider 52 upward, and the slider 52 squeezes the compression spring 33, so that the pressure applied to the pressure sensor 5 by the first elastic member 51 increases, and the operator monitors the pressure change of the pressure sensor 5 through the monitoring equipment, thereby detecting the distance of the road bridge descent, and the cost of the detection tube 1 and the detection ring 2 is relatively low, thereby reducing the cost of the bridge settlement distance detection device.

[0036] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A road and bridge settlement distance detection device, characterized in that: The invention comprises a detection tube (1) and a detection ring (2), wherein the detection tube (1) is a hard tube, and support structures (4) are arranged at both ends of the detection tube (1), and the support structures (4) are arranged on both sides of the bridge. A plurality of detection rings (2) are arranged, and the plurality of detection rings (2) are evenly arranged along the direction of the detection tube (1), and the detection ring (2) is fixedly connected to the bridge, and the detection ring (2) is arranged outside the detection tube (1). A pressure sensor (5) is arranged inside the detection ring (2), and the pressure sensor (5) is connected to the monitoring equipment through an electric wire, and the pressure sensor (5) is connected to a first elastic member (51), and the other end of the first elastic member (51) is against the surface of the detection tube (1).

2. A road and bridge settlement distance detection device according to claim 1, characterized in that: The detection ring (2) comprises an upper ring (21) and a lower ring (22), the pressure sensor (5) is arranged in the upper ring (21), and a clamping structure (3) for connecting the upper ring (21) and the lower ring (22) is arranged between the upper ring (21) and the lower ring (22).

3. A road and bridge settlement distance detection device according to claim 2, characterized in that: The clamping structure (3) comprises a clamping rod (31) and a clamping pin (32), wherein the clamping rod (31) is fixedly connected to the end of the lower ring (22), a clamping groove (211) is provided at the end of the upper ring (21), a pin groove (212) is provided on the side surface of the clamping groove (211), and the clamping pin (32) is slidably connected in the pin groove (212), and one end of the clamping pin (32) is fixedly connected to a spring (33), and the spring (33) is fixedly connected to the end of the lower ring (22). 3) The two ends are respectively connected to the pin groove (212) and the bayonet (32), and the bayonet (32) is inclined away from the spring (33) at one end, and the inclined surface faces the slot of the bayonet groove (211). A bayonet groove (311) is provided on the side surface of the bayonet rod (31). When the upper ring (21) and the lower ring (22) are connected, the bayonet rod (31) is inserted into the bayonet groove (211), and the bayonet pin (32) is inserted into the bayonet groove (311).

4. A road and bridge settlement distance detection device according to claim 3, characterized in that: A threaded hole is provided on the surface of the upper ring (21), the threaded hole is communicated with the pin groove (212), an unlocking bolt (34) is threadedly connected in the threaded hole, and the end of the unlocking bolt (34) is spherical, and an inclined groove (321) is provided on the surface of the bayonet (32). When the unlocking bolt (34) is completely screwed into the threaded hole, the end of the unlocking bolt (34) is inserted into the inclined groove (321), and the unlocking bolt (34) drives the bayonet (32) to move in the direction of the compression spring (33).

5. A road and bridge settlement distance detection device according to claim 2, characterized in that: The surface of the upper ring (21) is fixedly connected with a slide rail (53), and the slide rail (53) is slidably connected with a slider (52). The sliding direction of the slider (52) is the same as the deformation direction of the first elastic member (51). The slider (52) is fixedly connected to the end of the first elastic member (51) that faces away from the pressure sensor (5), and an arc groove is formed at the end of the slider (52) that faces away from the first elastic member (51), and the arc groove abuts against the surface of the detection tube (1).

6. A road and bridge settlement distance detection device according to claim 5, characterized in that: The lower ring (22) is threadedly connected to a threaded rod (61), and one end of the threaded rod (61) facing away from the lower ring (22) is rotatably connected to a support seat (6). An arc groove is formed on a side of the support seat (6) facing away from the threaded rod (61), and the detection tube (1) is located in the arc groove.

7. A road and bridge settlement distance detection device according to claim 1, characterized in that: The detection tube (1) comprises a plurality of tube segments (11), and a connection structure (12) for connecting the tube segments (11) is provided at the connection between adjacent tube segments (11).

8. A road and bridge settlement distance detection device according to claim 7, characterized in that: The connection structure (12) comprises an inner insert tube (121) and an outer insert tube (122). The inner insert tube (121) and the outer insert tube (122) are respectively arranged at two ends of the pipe section (11), and the outer diameter of the inner insert tube (121) is less than or equal to the inner diameter of the outer insert tube (122). Threaded holes are provided on the surfaces of the outer insert tube (122) and the inner insert tube (121), and the outer insert tube (122) and the inner insert tube (121) have the same number of threaded holes. A fixing bolt (1221) is threadedly connected to the threaded tube of the outer insert tube (122). When the pipe section (11) is connected, the inner insert tube (121) is inserted into the outer insert tube (122), and the fixing bolt (1221) is screwed into the threaded hole of the inner insert tube (121).

9. A road and bridge settlement distance detection device according to claim 1, characterized in that: A wire hole (111) is provided on the surface of the detection tube (1), and the wire of the pressure sensor (5) passes through the wire hole (111) and is connected to the detection tube (1).

10. A method for using a road and bridge settlement distance detection device according to any one of claims 1 to 9, characterized in that: The steps include: S1, installing the detection rings (2) at intervals and fixedly on the bridge surface; S2, passing the detection tube (1) through the detection ring (2) in sequence, and making the first elastic member (51) abut against the surface of the detection tube (1); S3, using a support structure (4) to fix and support both ends of the detection tube (1); S4. The pressure sensor (5) is powered on and connected to a monitoring device. The operator can observe the pressure change of the pressure sensor (5) through the monitoring device, thereby detecting the settlement distance of the bridge.

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