A pier top deviation monitoring device and a monitoring method

Abstract

The application provides a pier top deviation monitoring device and a monitoring method, and relates to the technical field of deviation monitoring.The monitoring device comprises a first distance measuring element, a second distance measuring element, a third distance measuring element, a first distance measuring plate, a second distance measuring plate and a third distance measuring plate.The first distance measuring element measures distance along a horizontal direction, and the distance measuring surface of the first distance measuring plate is perpendicular to the distance measuring direction of the first distance measuring element.The second distance measuring element measures distance along a gravity direction, and the distance measuring surface of the second distance measuring plate is perpendicular to the distance measuring direction of the second distance measuring element.The third distance measuring element measures distance along a first direction, and the distance measuring surface of the third distance measuring plate is perpendicular to the distance measuring direction of the third distance measuring element.There is a deviation angle between the first direction and the gravity direction.The application can measure the inclination angle of the pier foundation and the elastic deformation of the pier body, and is simple to install, convenient to measure, easy to maintain, can monitor the health condition of the pier, has a low cost and has no negative influence on the pier.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deviation monitoring, and particularly relates to a bridge pier top deviation monitoring device and a monitoring method. BACKGROUND

[0002] During the operation of a bridge, uneven settlement of the foundation under the action of a huge vertical load can occur, resulting in inclination of the foundation. In addition, under the combined action of the downward force caused by the self weight of the superstructure, the frictional resistance of the support, the temperature effect, the braking force of the vehicle, etc., the pier body can produce elastic deformation. The inclination of the foundation and the elastic deformation of the pier body jointly cause the deviation of the pier top, affecting the safety of the bridge in use. In order to ensure the normal operation of the bridge, it is necessary to monitor and early warn the deviation of the pier top in real time. The deviation mechanisms caused by the two reasons are different, and the treatment methods when rectifying are also different. Therefore, it is necessary to monitor the two deviation components separately.

[0003] The existing monitoring methods include total station, displacement meter and GPS / Beidou positioning instrument. However, the conventional total station monitoring needs manual measurement, the monitoring process is tedious, the labor consumption is large, and it is difficult to realize long-term and real-time monitoring. The GPS / Beidou positioning instrument can realize long-term and real-time monitoring, but has problems of high cost and insufficient accuracy. The plumb meter and the displacement meter are contact measurement methods, which are placed on the pier for monitoring, but have high installation requirements, high maintenance cost and can only measure one-way deformation. In addition, the above monitoring methods are mostly for measuring the total deviation of the pier top, and it is difficult to obtain different pier top deviation components. Therefore, it is necessary to provide a scheme to improve the above problems. SUMMARY

[0004] The present application relates to the technical field of deviation monitoring, and particularly relates to a bridge pier top deviation monitoring device and a monitoring method.

[0005] In a first aspect, the present application provides a pier top deviation monitoring device, comprising a first distance measuring element, a second distance measuring element and a third distance measuring element for fixing on a cover beam of a bridge to be monitored and having a same vertical plane in a distance measuring direction, and a first distance measuring plate, a second distance measuring plate and a third distance measuring plate arranged separately; the first distance measuring element measures distance in a horizontal direction and a distance measuring surface of the first distance measuring plate is perpendicular to the distance measuring direction of the first distance measuring element; the second distance measuring element measures distance in a gravity direction and a distance measuring surface of the second distance measuring plate is perpendicular to the distance measuring direction of the second distance measuring element; the third distance measuring element measures distance in a first direction and a distance measuring surface of the third distance measuring plate is perpendicular to the distance measuring direction of the third distance measuring element, and there is a deviation angle between the first direction and the gravity direction; the first distance measuring plate is located on the bridge to be monitored, and the second distance measuring plate and the third distance measuring plate are located on a mounting structure surface of the bridge to be monitored; and a distance between the second distance measuring plate and the third distance measuring plate is equal to a diameter of the bridge to be monitored.

[0006] Optionally, the device integration box is further provided, the first distance measuring element, the second distance measuring element and the third distance measuring element are installed on a surface of the device integration box, and a data analysis module is integrated in the device integration box, and the data analysis module is electrically connected with the first distance measuring element, the second distance measuring element and the third distance measuring element.

[0007] Optionally, the device integration box further comprises a data transmission module, a battery and a solar panel, the solar panel is arranged on a top of the device integration box, the solar panel is electrically connected with the battery, the battery is used for supplying power to the data analysis module, the first distance measuring element, the second distance measuring element and the third distance measuring element, and the data transmission module is in communication connection with the data analysis module.

[0008] Optionally, a first mounting hole is arranged at a bottom center of a side of the device integration box, the first mounting hole is used for mounting the first distance measuring element; a second mounting hole is arranged at a geometric center of a bottom of the device integration box, the second mounting hole is used for mounting the second distance measuring element; and a third mounting hole is arranged on a side between the first mounting hole and the second mounting hole of the device integration box, the third mounting hole is used for mounting the third distance measuring element.

[0009] Optionally, a transition arc edge is arranged on a side of the device integration box where the third mounting hole is arranged, and the third mounting hole is arranged on the transition arc edge.

[0010] In a second aspect, the present application further provides a pier top deviation monitoring method, using any optional monitoring device described above, comprising: the first distance measuring element measures a direction angle with the first distance measuring plate , and the second distance measuring element measures a distance with the second distance measuring plate with the direction angle , the third distance measuring element measures the distance with the third distance measuring plate ; the deviation amount of the pier top caused by the basic inclination is calculated based on the following formula and the deviation amount of the pier top caused by the deformation of the pier :

[0011] ;

[0012] ;

[0013] ;

[0014] ;

[0015] ;

[0016] ;

[0017] wherein, the inclination angle of the bridge pier to be monitored, the included angle between the straight line formed by the second distance measuring element and the second distance measuring plate and the horizontal plane, the deviation angle of the bridge pier to be monitored due to elastic deformation, the included angle between the straight line formed by the second distance measuring element and the second distance measuring plate and the bent cap plane. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the installation of a bridge pier top deviation monitoring device provided by the present application on a bridge pier to be monitored;

[0019] Figure 2 is a schematic diagram of the internal structure of the equipment integrated box provided by the present application;

[0020] Figure 3 is a schematic diagram of the connection structure of the internal devices of the equipment integrated box provided by the present application;

[0021] Figure 4 is a schematic diagram of the parameter measurement when the bridge pier top deviation monitoring method provided by the present application is used to perform deviation monitoring calculation.

[0022] BRIEF DESCRIPTION OF DRAWINGS:

[0023] 1, device integrated box; 11, anchor hanging plate; 12, integrated box body; 121, containing part; 122, cover part; 2, first distance measuring plate; 3, second distance measuring plate; 4, third distance measuring plate; 5, first mounting hole; 6, second mounting hole; 7, transition arc edge; 8, third mounting hole; 9, bridge pier to be monitored; 10, bent cap; 13, data analysis module; 14, data transmission module; 15, antenna; 16, battery; 17, solar panel; 18, first distance measuring part; 19, second distance measuring part; 20, third distance measuring part. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the common meanings thereof by those of ordinary skill in the art to which the present application belongs.

[0025] The embodiments of the present application provide a bridge pier top displacement monitoring device, which comprises a device integrated box 1 and a first distance measuring plate 2, a second distance measuring plate 3 and a third distance measuring plate 4 arranged in a split manner, wherein the device integrated box 1 comprises an anchor hanging plate 11 and an integrated box body 12, the integrated box body 12 is fixed at the position of the bent cap 10 of the bridge to be monitored through the anchor hanging plate 11, and the first distance measuring plate 2 is installed on the circumferential side of the integrated box body 12, and the second distance measuring plate 3 and the third distance measuring plate 4 are both installed on the installation structure surface of the bridge pier 9 to be monitored.

[0026] In fact, the integrated box body 12 comprises a containing part 121 and a cover part 122, the containing part 121 is provided with a containing interval, and the top of the containing part 121 is provided with an opening to communicate the containing interval with the outside, and the cover part 122 is rotationally arranged on the opening side of the containing part 121 and covers the opening to close the containing interval. Specifically, the anchor hanging plate 11 is fixedly installed on the side wall of the containing part 121, and in addition, the top of the anchor hanging plate 11 is provided with a through hole, so that the anchor hanging plate 11 can be installed and fixed by using the through hole.

[0027] In fact, the surface of the equipment integrated box 1 is provided with the first distance measuring element 18, the second distance measuring element 19 and the third distance measuring element 20, and the first distance measuring element 18 is used to measure the distance between the first distance measuring plate 2, the second distance measuring element 19 is used to measure the distance between the second distance measuring plate 3, and the third distance measuring element 20 is used to measure the distance between the third distance measuring plate 4. Specifically, by using the first distance measuring plate 2, the second distance measuring plate 3, the third distance measuring plate 4 in combination with the first distance measuring element 18, the second distance measuring element 19 and the third distance measuring element 20, the offset angle can also be obtained by measuring the distance.

[0028] In fact, the distance measuring directions of the first distance measuring element 18, the second distance measuring element 19 and the third distance measuring element 20 on the surface of the equipment integrated box 1 are located in the same vertical plane, and the first distance measuring element 18, the second distance measuring element 19 and the third distance measuring element 20 are located on the outer side wall of the accommodating portion 121.

[0029] Specifically, the second distance measuring element 19 is installed in the second mounting hole 6 which is arranged at the geometric center position of the bottom of the opening of the accommodating portion 121, and the second distance measuring element 19 measures the distance in the vertical direction along the direction of gravity; the first distance measuring element 18 is installed in the first mounting hole 5 which is arranged at the geometric center of the right side wall of the accommodating portion 121, and the first distance measuring element 18 measures the distance in the horizontal direction.

[0030] In addition, the side of the accommodating portion 121 between the first mounting hole 5 and the second mounting hole 6 is provided with a transition arc edge 7, and the third mounting hole 8 is arranged in the middle of the transition arc edge 7, and the third distance measuring element 20 is installed in the third mounting hole 8, and the third distance measuring element 20 measures the distance in the first direction, and the first direction has a deviation angle with the direction of gravity. In fact, the size of the deviation angle is related to the diameter and height of the bridge pier 9 to be monitored.

[0031] Specifically, the first distance measuring element 18, the second distance measuring element 19 and the third distance measuring element 20 are all laser distance measuring elements, and the distance is measured by laser reflection with the first distance measuring plate 2, the second distance measuring plate 3 and the third distance measuring plate 4, so that the distance measuring surface of the first distance measuring plate 2 is perpendicular to the distance measuring direction of the first distance measuring element 18, the distance measuring surface of the second distance measuring plate 3 is perpendicular to the distance measuring direction of the second distance measuring element 19, and the distance measuring surface of the third distance measuring plate 4 is perpendicular to the distance measuring direction of the third distance measuring element 20.

[0032] Specifically, the first distance plate 2 is located on the bent cap 10 of the bridge pier 9 to be monitored, and the first distance plate 2 is located on the peripheral side of the equipment integrated box 1, and in addition, the first distance plate 2 is a straight-angled bent plate; the second distance plate 3 and the third distance plate 4 are located on the installation structure surface of the bridge pier 9 to be monitored, and the distance between the second distance plate 3 and the third distance plate 4 is equal to the diameter of the bridge pier 9 to be monitored, and in addition, the second distance plate 3 is a straight plate, the third distance plate 4 is a bent plate, and the bent angle of the third distance plate 4 is related to the deflection angle formed by the first direction in the gravity direction.

[0033] In fact, by cooperating the first distance plate 2, the second distance plate 3, and the third distance plate 4 with the first distance measuring piece 18, the second distance measuring piece 19, and the third distance measuring piece 20, the deflection degree of the pier top of the bridge pier 9 to be monitored caused by foundation inclination and pier deformation in the use process can be known, and in turn, it is beneficial for the pier maintenance personnel to know quickly and repair in time. Specifically, the first distance plate 2, the second distance plate 3, and the third distance plate 4 can all be made of metal materials.

[0034] In some embodiments, a data analysis module 13 is integrated in the equipment integrated box 1, and the first distance measuring piece 18, the second distance measuring piece 19, and the third distance measuring piece 20 are all electrically connected with the data analysis module 13, and in turn, the data analysis module 13 can know the data measured by the first distance measuring piece 18, the second distance measuring piece 19, and the third distance measuring piece 20 in real time, and the deflection amount of the pier top of the bridge pier 9 to be monitored can be known by operation in the data analysis module 13.

[0035] In some embodiments, a data transmission module 14 and an antenna 15 are also integrated in the equipment integrated box 1, the data transmission module 14 is in communication connection with the data analysis module 13, and in turn, when the data analysis module 13 completes the calculation of the deflection amount of the pier top, the calculation result can be sent to the bridge pier maintenance personnel by using the data transmission module 14 and the antenna 15, and in turn, the maintenance personnel can monitor the condition of the bridge pier. Specifically, the antenna 15 can be arranged on the outside of the equipment integrated box 1 to improve the signal transmission capability of the antenna 15.

[0036] In some embodiments, a battery 16 and a solar panel 17 are also arranged in the equipment integrated box 1, the solar panel 17 is arranged on the top of the equipment integrated box 1, and can be used for photoelectric conversion under illumination and energy storage of the battery 16, so as to improve the overall endurance capability of the monitoring device, and in addition, the battery 16 is arranged inside the equipment integrated box 1 and is used for energy supply of the data analysis module 13, the first distance measuring piece 18, the second distance measuring piece 19, and the third distance measuring piece 20.

[0037] In some embodiments, a warning processor is further arranged in the equipment integrated box 1, and the warning processor is in signal communication connection with the data analysis module 13, so that when the calculated pier top deviation value in the data analysis module 13 is greater than the preset threshold value in the warning processor, the warning processor can send a warning signal, thereby timely reminding the pier maintenance personnel to timely process, so as to cause further harm. Specifically, the warning processor is in signal connection with the data transmission module 14, so as to transmit the warning signal through the data transmission module 14 and the antenna 15.

[0038] In fact, when the monitoring device is installed on the to-be-monitored pier 9, the deflection angle is calculated in advance according to the height and diameter of the to-be-monitored pier 9, and then the bending angle of the third distance board 4 is set. Specifically, the height of the to-be-monitored pier 9 is based on the part above the installation structure surface (the distance between the second distance piece 19 and the second distance board 3).

[0039] In some embodiments, when the first distance board 2, the second distance board 3 and the third distance board 4 are installed, the first distance board 2, the second distance board 3 and the third distance board 4 can be installed on the bent cap 10 and the installation structure surface of the to-be-monitored pier 9 by using expansion bolts, so as to realize the fixed installation of the first distance board 2, the second distance board 3 and the third distance board 4.

[0040] Specifically, the application further provides a pier top deviation monitoring method, which applies the monitoring device provided in any of the above embodiments, and includes: the first distance piece 18 measures the direction angle of the first distance board 2 , the second distance piece 19 measures the distance and the direction angle of the second distance board 3, and the third distance piece 20 measures the distance of the third distance board 4; the pier top deviation amount caused by foundation inclination is calculated based on the following formula and the pier top deviation amount caused by pier deformation is calculated based on the following formula :

[0041] ;

[0042] ;

[0043] ;

[0044] ;

[0045] ;

[0046] ;

[0047] wherein, is the inclination angle of the to-be-monitored pier 9, is the angle between the straight line formed by the second distance measuring element 19 and the second distance measuring plate 3 and the horizontal plane, is the angle of displacement of the monitored pier 9 due to elastic deformation, is the angle between the straight line formed by the second distance measuring element 19 and the second distance measuring plate 3 and the plane of the bent cap.

[0048] In fact, when calculating the displacement of the pier top, the angle of inclination and displacement of the pier top is not significant, so the height and diameter of the monitored pier 9 can be regarded as constant values, and the monitoring device installed at the bent cap 10 of the monitored pier 9 will continuously displace with the inclination and deformation of the monitored pier 9, but the first distance measuring element 18, the second distance measuring element 19, and the third distance measuring element 20 can still cooperate with the first distance measuring plate 2, the second distance measuring plate 3, and the third distance measuring plate 4 to determine the position and angle of displacement.

[0049] Although the embodiments of the present application have been described in detail above, it is obvious to those skilled in the art that various modifications and changes can be made to the embodiments. However, it should be understood that such modifications and changes are within the scope and spirit of the present application as described in the claims. Moreover, the present application described herein can have other embodiments and can be implemented or realized in various ways.

Claims

1. A device for monitoring the deviation of the top of a bridge pier, characterized in that, The system includes a first, second, and third ranging component for fixing to the cap beam of the bridge pier to be monitored, with their ranging directions located in the same vertical plane. It also includes a first, second, and third ranging plate, which are separately configured. The first ranging component measures distance horizontally, and the measuring surface of the first ranging plate is perpendicular to the measuring direction of the first ranging component. The second ranging component measures distance along the direction of gravity, and the measuring surface of the second ranging plate is perpendicular to the measuring direction of the second ranging component. The third ranging component measures distance along a first direction, and the measuring surface of the third ranging plate is perpendicular to the measuring direction of the third ranging component. There is a deflection angle between the first direction and the direction of gravity. The first ranging plate is located on the bridge pier to be monitored, and the second and third ranging plates are located on the mounting structure surface of the bridge pier to be monitored. The distance between the second measuring plate and the third measuring plate is equal to the diameter of the bridge pier to be monitored; The detection method of the bridge pier top deviation monitoring device includes: measuring the orientation angle between the first distance measuring element and the first distance measuring plate. The second distance measuring device measures the distance to the second distance measuring plate. With direction angle The third distance measuring device measures the distance to the third distance measuring plate. The displacement of the pier top caused by foundation tilt is calculated based on the following formula. and the amount of pier top displacement caused by pier deformation : ； ； ； ； ； ； in, The tilt angle of the bridge pier to be monitored. The angle between the straight line formed by the second rangefinder and the second rangefinder plate and the horizontal plane. The offset angle of the bridge pier to be monitored due to elastic deformation. The angle between the straight line formed by the second measuring element and the second measuring plate and the plane of the cover beam.

2. The monitoring device according to claim 1, characterized in that, It also includes an equipment integration box, on which the first, second, and third ranging components are mounted. The equipment integration box contains a data analysis module, which is electrically connected to the first, second, and third ranging components.

3. The monitoring device according to claim 2, characterized in that, The equipment integration box also includes a data transmission module, a battery, and a solar panel. The solar panel is located on the top of the equipment integration box and is electrically connected to the battery. The battery is used to power the data analysis module, the first ranging device, the second ranging device, and the third ranging device. The data transmission module is communicatively connected to the data analysis module.

4. The monitoring device according to claim 2, characterized in that: A first mounting hole is provided at the bottom center of the side of the device integration box, and the first mounting hole is used to install the first ranging component; a second mounting hole is provided at the geometric center of the bottom of the device integration box, and the second mounting hole is used to install the second ranging component; a third mounting hole is provided on the side of the device integration box between the first mounting hole and the second mounting hole, and the third mounting hole is used to install the third ranging component.

5. The monitoring device according to claim 4, characterized in that, The equipment integration box has a transition arc edge on the side where the third mounting hole is located, and the third mounting hole is located on the transition arc edge.

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