CN108007430B - Monitoring system and method for subgrade settlement - Google Patents
Monitoring system and method for subgrade settlement Download PDFInfo
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- CN108007430B CN108007430B CN201711328953.0A CN201711328953A CN108007430B CN 108007430 B CN108007430 B CN 108007430B CN 201711328953 A CN201711328953 A CN 201711328953A CN 108007430 B CN108007430 B CN 108007430B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
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Abstract
The invention discloses a monitoring system and a monitoring method for subgrade settlement, which have the technical scheme that the monitoring system comprises reference piles arranged on bedrocks at two ends of a section of subgrade, a plurality of settlement piles are arranged between the two reference piles of the subgrade at equal intervals, guide rails are erected on the reference piles and the settlement piles through a plurality of support rods, and position markers are arranged at the positions of the guide rails, which are opposite to each settlement pile; the monitoring vehicle comprises a vehicle body and a monitoring vehicle controller, an electric guide wheel assembly connected with the monitoring vehicle controller is mounted on the vehicle body, the vehicle body is erected on the guide rail through the electric guide wheel assembly, a position detector is arranged on the vehicle body, a height detection device and a communication module are arranged on the vehicle body, the position detector is connected with the monitoring vehicle controller to be used for detecting position markers on the guide rail, the height detection device is connected with the monitoring vehicle controller to be used for acquiring vehicle height values when the vehicle body stops on the position markers one by one, and the communication module is used for sending the acquired vehicle height values to a monitoring center.
Description
Technical Field
The invention relates to the field of roadbed settlement monitoring, in particular to a roadbed settlement monitoring system and method.
Background
The roadbed is an important component of railway line engineering, is a foundation for bearing the weight of a track structure and the load of a train, and is the weakest and most unstable link in the line engineering. In the construction of a project and after the completion, the roadbed inevitably deforms under the action of loads and other factors, and uniform or non-uniform settlement is generated. Post-construction settlement, particularly uneven settlement, is likely to cause cracking, skewing and damage to the main structure of the railway, and may also have some effect on the buildings and underground pipelines around the works. Therefore, the subgrade settlement must be monitored and controlled in terms of the engineering quality safety of the railway.
The current common methods for monitoring subgrade settlement are as follows: 1. a plate settling method; the settlement plate base settles along with the roadbed, and the roadbed settlement value at the position where the base is buried can be measured through the measuring rod connected with the base. But the construction is easy to be damaged, and the repair after the damage is very difficult, wherein one settlement plate can only measure the settlement of one point in the embankment, and the settlement belongs to single-point measurement. 2. Pile monitoring method: the monitoring pile is nailed into the soil by a timber pile and a steel chisel, and is leveled by a level gauge, so that the settlement of the surface of the soil body can be measured. 3. Horizontal inclinometer: and judging the stability of the foundation soil by testing the lateral displacement of the foundation and estimating the settlement generated by the lateral displacement. 4. Hydraulic pressure type section settlement gauge: the partition board with the small holes is embedded into the positions of all points to be measured underground in a drilling mode in advance, and the settlement value of the positions can be measured by measuring the water pressure of the partition boards. 5. Magnetic ring settlement gauge: after the hole is formed by a drilling machine, the layered settling pipe and the magnetic ring layered settling mark are placed in the hole, and the depth of the settling ring is reflected by an electromagnetic induction signal. However, the magnetic ring is difficult to place correctly, and the extension of the scale affects the precision and interferes the soil filling construction.
Therefore, when the settlement measurement of the roadbed of the railway at the straight section is carried out, the methods are all traditional civil measurement methods, the defects of low measurement precision, manual operation, low information transmission speed, measurement of the settlement amount of a single place, inconvenience in installation and use and the like generally exist, and the real-time monitoring of the roadbed settlement in a large range is not facilitated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a roadbed settlement monitoring system which has the characteristic of monitoring roadbed settlement in a large range in real time.
The technical purpose of the invention is realized by the following technical scheme:
a monitoring system for subgrade settlement comprises reference piles arranged on bedrocks at two ends of a section of subgrade, a plurality of settlement piles are arranged between the two reference piles of the subgrade at equal intervals, and the system further comprises a guide rail, a monitoring vehicle and a monitoring center;
the guide rail is erected on the reference pile and the sedimentation pile through a plurality of support rods, and a position marker is arranged at the position, opposite to each sedimentation pile, of the guide rail;
the monitoring vehicle comprises a vehicle body and a monitoring vehicle controller, wherein an electric guide wheel assembly connected with the monitoring vehicle controller is mounted on the vehicle body, the vehicle body is erected on the guide rail through the electric guide wheel assembly, a position detector, a height detection device and a communication module are arranged on the vehicle body, the position detector is connected with the monitoring vehicle controller to be used for detecting position markers on the guide rail, the height detection device is connected with the monitoring vehicle controller to be used for acquiring vehicle height values when the vehicle body stops on the position markers one by one, and the communication module is used for sending the acquired vehicle height values to a monitoring center.
Through the technical scheme, the monitoring vehicle can move along the guide rail, measure the car body height value when moving a settlement stake on, and carry out real time monitoring with car body height value feedback to the monitoring center, from this, through the setting of this monitoring vehicle, when the settlement measurement in the face of railway or the straight section road bed of highway, through measuring analysis to every settlement stake, thereby can realize the monitoring that the road bed subsides on a large scale, in order to abandon artifical measuring mode, thereby effectively improved the convenience of road bed settlement monitoring.
Preferably, the guide rail is provided with a conductive battery cell along the length direction thereof, the starting end of the conductive battery cell is connected with a power supply, a power module for providing monitoring vehicle electric energy is arranged in the vehicle body, the bottom of the vehicle body is provided with a conductive contact contacted with the conductive battery cell, a conductive cable is arranged on the vehicle body, one end of the conductive cable is connected with the conductive contact, and the other end of the conductive cable is connected with the input end of the power module.
According to the technical scheme, the conductive cell is connected with the power supply, and the conductive cable on the vehicle body is in contact with the conductive cell through the conductive contact, so that the conductive cell can charge the power module in real time to achieve the purpose of supplying power to the monitoring vehicle, and therefore the monitoring vehicle can run on the guide rail in a whole journey without stages to improve the efficiency of roadbed settlement prevention monitoring; when the power supply is powered off, the electric energy stored by the power supply module can correspondingly provide certain duration for the operation of the monitoring vehicle.
Preferably, the power module is a lithium battery.
Through above-mentioned technical scheme, the lithium cell performance is firm, can satisfy the use of this monitoring vehicle.
Preferably, the position detector uses a proximity switch, and the position marker uses a metal detection body.
Through the technical scheme, when the monitoring vehicle moves to the guide rail above the sedimentation pile, the proximity switch on the vehicle body is opposite to the metal detection body on the guide rail, so that the proximity switch outputs a signal to the monitoring vehicle controller, and the height detection device is controlled to detect the height value of the vehicle body at the position.
Preferably, the height detection device comprises a support which is slidably mounted in the vehicle body and an infrared receiver which is positioned outside the vehicle body and connected with the support, a screw rod connected with the support is mounted in the vehicle body, a lifting motor which is connected with the screw rod and used for driving the infrared receiver to lift up and down is arranged in the vehicle body, and a monitoring encoder is mounted on the lifting motor;
an infrared emitter is arranged at one end of the guide rail;
when the position detector detects a position marker on the guide rail, the monitoring vehicle controller controls the infrared receiver to start and judges whether infrared light emitted by the infrared emitter is received, if not, the lifting motor is controlled to rotate to adjust the upper position and the lower position of the infrared receiver, and further judges whether the infrared receiver receives the infrared light emitted by the infrared emitter, if so, a height adjustment value recorded by the monitoring encoder is obtained, and the height adjustment value is compared with a preset reference height value to obtain a vehicle height value.
Through the technical scheme, the lifting motor is controlled to rotate to drive the screw rod to rotate, and the support is driven to lift up and down through the screw rod, so that the purpose of lifting up and down the infrared receiver is achieved; in the initial stage, the infrared transmitter and the infrared receiver are kept horizontally opposite, when the monitoring vehicle moves to the settlement pile, the monitoring controller controls the infrared receiver to be powered on and started, and if the settlement pile does not settle, the infrared receiver receives infrared light emitted by the infrared transmitter; if should subside the stake and take place to subside, infrared receiver will unable infrared light that receives infrared emitter and send, and at this moment, elevator motor rotates and orders about infrared receiver oscilaltion, and until infrared receiver receives the infrared light that infrared emitter sent, at this moment, elevator motor stall, through monitoring encoder monitoring elevator motor's turned angle, this turned angle is the distance that should subside the stake and subsides promptly and is height control value, obtains the settlement monitoring that the stake was subsided to automobile body height value completion from this.
Preferably, the monitoring vehicle controller is further configured to control the reset of the height position of the infrared receiver after acquiring the height adjustment value recorded by the monitoring encoder.
Through the technical scheme, when the lifting motor rotates to drive the infrared receiver to ascend and descend, the lifting motor stops rotating until the infrared receiver receives infrared light emitted by the infrared emitter, and after the monitoring encoder monitors the rotating angle of the lifting motor, the monitoring vehicle controller controls the lifting motor to reset to the zero position, namely the position of the infrared receiver relative to the infrared emitter.
Preferably, baffles are mounted at two ends of the guide rail, contact switches capable of contacting with the baffles are arranged at two sides of the vehicle body, the contact switches are connected with a monitoring vehicle controller, and a timing module is connected to the monitoring vehicle controller;
when the contact switch is in contact with the baffle plate, a trigger signal is output to the monitoring vehicle controller, the monitoring vehicle controller responds to the trigger signal to control the electric guide wheel assembly to stop running, and the timing module controls the electric guide wheel assembly to move reversely after a preset period.
Through above-mentioned technical scheme, after the monitoring vehicle accomplished settlement monitoring once, on the contact switch on the automobile body will touch the apron of guide rail tip, the electronic guide pulley subassembly stall of monitoring controller control to according to the position of contact switch after presetting the cycle, if touch the contact switch in automobile body the place ahead, will control the automobile body reverse running, make a round trip to monitor the settlement of this section road bed repeatedly promptly.
Preferably, the monitoring vehicle controller is connected with a storage module for storing the acquired vehicle height value.
Through the technical scheme, the storage module is used for storing the vehicle height value acquired by the monitoring vehicle controller, and the loss of the vehicle height value data is avoided.
Preferably, a monitoring unit and a warning unit are configured in the monitoring center;
the monitoring unit is used for comparing the obtained height value of the vehicle body with a preset reference height value one by one to obtain a difference value of the obtained height value and the preset reference height value, judging whether the difference value is greater than a threshold value or not, and controlling the warning unit to send warning information if the difference value is greater than the threshold value.
Through the technical scheme, when the settlement of the settlement pile is greater than the threshold value, related workers are provided in a warning information mode, and the roadbed is maintained and overhauled in time.
Aiming at the defects in the prior art, the invention aims to provide a roadbed settlement monitoring method which has the characteristic of monitoring the roadbed settlement in a large range in real time.
The technical purpose of the invention is realized by the following technical scheme:
a method for monitoring subgrade settlement comprises the following steps:
an arrangement step: reference piles are installed on bedrocks at two ends of a section of roadbed, a plurality of settlement piles are arranged between the two reference piles at equal intervals, and guide rails are erected on the reference piles and the settlement piles through support rods;
a monitoring step: controlling the monitoring vehicle to move along the guide rail, stopping the monitoring vehicle on the guide rail above each settlement pile one by one to obtain a vehicle height value, and sending the obtained vehicle height value to a monitoring center for real-time monitoring;
and (3) circulating step: and after the monitoring vehicle finishes walking the roadbed along the guide rail, restarting and moving along the guide rail in the reverse direction after a preset period so as to repeat the monitoring step.
Through above-mentioned technical scheme, through the setting of this monitoring vehicle, when the settlement measurement in the face of the railway roadbed, through subsiding the stake and carrying out measurement and analysis to every to can real-time supervision subgrade settlement on a large scale, in order to abandon artifical measuring mode, thereby effectively improved the convenience of subgrade settlement monitoring.
In summary, compared with the prior art, the beneficial effects of the invention are as follows:
1. by means of the monitoring vehicle, when the settlement of the railway roadbed is measured, each settlement pile is measured and analyzed, so that the settlement of the roadbed in a large range can be monitored;
2. the roadbed settlement monitoring mode abandons the manual measurement mode, thereby effectively improving the convenience of roadbed settlement monitoring;
3. in the roadbed settlement monitoring process, the roadbed at the same end can be periodically monitored in a reciprocating mode at regular time to form periodic data, the roadbed is analyzed in real time, and response measures are timely taken.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of the installation of guide rails on a reference pile and a settlement pile in the technical scheme of the invention;
FIG. 2 is a schematic diagram of the settling of a settling pile in the technical solution of the present invention;
FIG. 3 is a schematic diagram of a height detection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a monitoring vehicle in the technical scheme of the invention;
fig. 5 is a system block diagram of a monitoring center of the monitoring vehicle in the technical scheme of the invention.
Reference numerals: 1. a reference pile; 2. settling the piles; 3. a guide rail; 4. a support bar; 5. bedrock; 6. a conductive cell; 7. a vehicle body; 8. an electric guide wheel assembly; 9. a guide wheel frame; 10. a power supply module; 11. a pillar; 12. a conductive contact; 13. a conductive cable; 14. a position marker; 15. a position detector; 16. a support; 17. an infrared receiver; 18. an infrared emitter; 19. a connecting rod; 20. a screw rod; 21. a lifting motor; 22. monitoring the encoder; 23. a baffle plate; 24. a contact switch.
Detailed Description
In order to better and clearly show the technical scheme of the invention, the invention is further described with reference to the attached drawings.
The main points of this embodiment lie in introducing the monitoring of subgrade settlement, and the monitoring system of subgrade settlement in this embodiment abandons manual measurement's mode, when facing the settlement measurement of railway or the straight section of highway or slope section subgrade, can regularly, and the reciprocal periodicity of making a round trip is monitored the same-end subgrade to form periodic data, through carrying out measurement and analysis to every settlement stake 2, thereby can realize the monitoring of subgrade settlement on a large scale.
Example one
Based on the above, the present embodiment provides a subgrade settlement monitoring system, which is shown in fig. 1, fig. 2 and fig. 3, and includes reference piles 1 arranged on two end bedrocks 5 in a section of subgrade, a plurality of settlement piles 2 are arranged between two reference piles 1 at equal intervals on the subgrade, the reference piles 1 are arranged within the range of the bedrocks 5 of the subgrade, and do not generate settlement deformation, and the settlement piles 2 are arranged on the subgrade, and the height of the settlement piles varies with the settlement deformation of the subgrade. In the embodiment, the height of the reference pile 1 and the height of the settlement pile 2 above the ground are 10 cm-20 cm. The distance between two adjacent sedimentation piles 2 is distributed at intervals according to the soil property of the roadbed and is between 20m and 25 m.
As shown in fig. 4 and 5, the monitoring system for subgrade settlement further comprises a guide rail 3, a monitoring vehicle and a monitoring center.
The power supply can be direct current powered by a storage battery or direct current converted by commercial power.
Wherein, monitoring vehicle includes automobile body 7 and monitoring vehicle controller, installs electronic guide pulley subassembly 8 on the automobile body 7, and electronic guide pulley subassembly 8 links to each other with monitoring vehicle controller, and automobile body 7 erects on guide rail 3 through electronic guide pulley subassembly 8. Specifically, electric guide wheel assembly 8 is including installing the guide wheel motor in automobile body 7 and through the drive shaft of coupling joint on the guide wheel motor output shaft, installs the leading wheel with guide wheel frame 9 block on the drive shaft, and monitoring vehicle controller passes through motor drive circuit and connects in the guide wheel motor. The monitoring vehicle controller can make the vehicle body 7 move along the guide rail 3 by controlling the electric guide wheel assembly 8.
It is worth to be noted that a power module 10 for providing monitoring vehicle electric energy is arranged in the vehicle body 7, and the power module 10 adopts a lithium battery. The bottom of the vehicle body 7 is provided with two pillars 11, the pillars 11 extend to the concave part of the guide rail 3, the end part of the pillar 11 is provided with a conductive contact 12, the conductive contact 12 is in contact with the conductive battery cell 6, wherein the pillar 11 is made of an insulating material, a conductive cable 13 is arranged in the pillar 11, one end of the conductive cable 13 is connected with the conductive contact 12, and the other end of the conductive cable is connected with the input end of the power module 10 through a charging circuit.
A position marker 14 is arranged at the position of the guide rail 3 opposite to each settling pile 2, wherein a position detector 15, a height detection device and a communication module are arranged on the vehicle body 7, the position detector 15 adopts a proximity switch, and the position marker 14 adopts a metal detection body. A gap is reserved between the bottom of the vehicle body 7 and the upper surface of the guide rail 3, wherein the position detector 15 is arranged at the bottom of the vehicle body 7, the position detector 15 is connected with the monitoring vehicle controller to be used for detecting the position markers 14 on the guide rail 3, the height detection device is connected with the monitoring vehicle controller to be used for acquiring the height value of the vehicle body when the vehicle body 7 stays on the position markers 14 one by one, and the communication module is used for sending the acquired height value of the vehicle body to the monitoring center.
Specifically, when the monitoring vehicle controller controls the electric guide wheel assembly 8 to operate, and the vehicle body 7 advances along the guide rail 3, when the position detector 15 at the bottom of the vehicle body 7 contacts with the position marker 14, the monitoring vehicle controller controls the electric guide wheel assembly 8 to stop operating, the height value of the vehicle body is obtained through the height detection device, the communication module sends the obtained height value of the vehicle body to the monitoring center, and the monitoring vehicle controller controls the electric guide wheel assembly 8 to operate again to drive the vehicle body 7 to move to a monitoring point of the next settlement pile 2 for settlement detection. Wherein, be connected with the storage module who is used for the automobile body height value of storage acquireing on the monitoring vehicle controller.
The monitoring center obtains a vehicle height value of each settlement pile 2, wherein the vehicle height value represents the height of the settlement pile 2, and accordingly a settlement curve of the roadbed at the time and the date is obtained.
It is worth to be noted that the monitoring center is provided with a monitoring unit and a warning unit; the monitoring unit is used for comparing the obtained height value of the vehicle body with a preset reference height value one by one to obtain a difference value of the obtained height value and the preset reference height value, judging whether the difference value is greater than a threshold value or not, and controlling the warning unit to send warning information if the difference value is greater than the threshold value. The warning information is sent to the mobile terminal of the corresponding responsible person.
Therefore, the monitoring center can compare the reference height values after acquiring the vehicle height value, and judge whether each settlement pile 2 is settled or raised one by one, if the difference value is greater than the threshold value, the settlement pile 2 is settled or raised, and therefore measures need to be taken in time to perform deployment and control. Wherein, the benchmark height value is the height value of the body of the monitoring vehicle staying on the guide rail 3 above the benchmark pile 1.
In one embodiment, the height monitoring employs a height sensor.
In another embodiment, the height detection device comprises a bracket 16 and an infrared receiver 17, two ends of the bracket 16 are slidably mounted in the vehicle body 7, the bracket 16 is connected with a connecting rod 19 penetrating through the top of the vehicle body 7, the infrared receiver 17 is arranged on the connecting rod 19, wherein a screw rod 20 in threaded connection with the bracket 16 is rotatably mounted in the vehicle body 7, a lifting motor 21 connected with the screw rod 20 for driving the infrared receiver 17 to lift up and down is arranged in the vehicle body 7, a monitoring encoder 22 is mounted on the lifting motor 21, and the monitoring vehicle controller is connected to the lifting motor 21 through a motor driving circuit.
One end of the guide rail 3 is provided with an infrared emitter 18, and the emitting heads of the infrared emitter 18 and the infrared receiver 17 are opposite, namely the emitting heads of the infrared emitter 18 and the infrared receiver 17 are in the same straight line. In this embodiment, the infrared emitter 18 is connected to the conductive electrical core 6 through a voltage reduction circuit to take electricity.
Therefore, when the position detector 15 detects the position marker 14 on the guide rail 3, the monitoring vehicle controller controls the infrared receiver 17 to start and determines whether the infrared light emitted by the infrared emitter 18 is received, if not, the lifting motor 21 is controlled to rotate to adjust the up-down position of the infrared receiver 17, and further determines whether the infrared receiver 17 receives the infrared light emitted by the infrared emitter 18, if so, the height adjustment value recorded by the monitoring encoder 22 is obtained and compared with the preset reference height value to obtain the vehicle height value. Specifically, when the infrared receiver 17 starts to receive no infrared light emitted by the infrared emitter 18, the monitoring vehicle controller first controls the lifting motor 21 to rotate so that the infrared receiver 17 ascends (in an actual working condition, the condition of subgrade settlement is more than the condition of subgrade protrusion), and therefore, if the infrared receiver 17 does not receive infrared light emitted by the infrared emitter 18 after ascending to a preset distance, the monitoring vehicle controller controls the lifting motor 21 to rotate so that the infrared receiver 17 descends to receive infrared light emitted by the infrared emitter 18.
Wherein the monitoring vehicle controller is further configured to control the reset of the height position of the infrared receiver 17 after acquiring the height adjustment value recorded by the monitoring encoder 22. That is, the rotation angle of the elevator motor 21 is reset to the initial position (zero point position). In this embodiment, the lifting motor 21 and the guide wheel motor both adopt servo motors.
Referring to fig. 1 and 5, two ends of the guide rail 3 are both provided with a baffle plate 23, two sides of the car body 7 are both provided with contact switches 24 capable of contacting with the baffle plate 23 (the two contact switches 24 are respectively configured as a front contact switch 24 and a rear contact switch 24), the contact switches 24 are connected with a monitoring car controller, and the monitoring car controller is connected with a timing module;
when the contact switch 24 contacts with the baffle 23, a trigger signal is output to the monitoring vehicle controller, the monitoring vehicle controller responds to the trigger signal to control the electric guide wheel assembly 8 to stop running, and the timing module controls the electric guide wheel assembly 8 to move reversely after a preset period. For example, when the monitoring vehicle travels from the head end to the tail end of the guide rail 3, the rear contact switch 24 on the vehicle body 7 contacts with the baffle 23 at the tail end of the guide rail 3, that is, the monitoring vehicle completes the roadbed settlement monitoring of one period of the road section, at this time, the contact switch 24 outputs a trigger signal to the monitoring vehicle controller to control the electric guide wheel assembly 8 to stop running, and after a preset period (one week or three days), the electric guide wheel assembly 8 is controlled to move reversely to control the vehicle body 7 to travel towards the head end of the guide rail 3, so as to perform the roadbed settlement monitoring of the second period.
The roadbed settlement monitoring system is mainly applied to railways and highways in straight sections or inclined sections, but not applicable to railways or highways in curved sections. The road bed monitoring that can set up a plurality of highway sections and to the highway subgrade of broad can all set up this road bed settlement monitoring system in the both sides of highway subgrade, avoid appearing half the settlement of road bed, the half circumstances of not subsiding of half.
Example two
Based on the above, the embodiment provides a method for monitoring subgrade settlement, which includes the following steps:
an arrangement step: reference piles 1 are installed on bedrocks 5 at two ends of a section of roadbed, a plurality of settlement piles 2 are arranged between the two reference piles 1 at equal intervals, and guide rails 3 are erected on the reference piles 1 and the settlement piles 2 through support rods 4;
a monitoring step: controlling the monitoring vehicle to move along the guide rail 3, stopping the monitoring vehicle on the guide rail 3 above each settlement pile 2 one by one to obtain a vehicle height value, and sending the obtained vehicle height value to a monitoring center for real-time monitoring;
and (3) circulating step: after the monitoring vehicle has completed the section of roadbed along the guide rail 3, it is restarted and moved in the reverse direction along the guide rail 3 after a preset period to repeat the monitoring step.
Consequently, through the setting of this monitoring vehicle, when the settlement measurement in the face of the railway roadbed, through 2 measurement analysis to every settlement stake to can real-time supervision on a large scale the roadbed subside, in order to abandon artifical measuring mode, thereby effectively improved the convenience of roadbed settlement monitoring.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (9)
1. A monitoring system for subgrade settlement comprises reference piles (1) arranged on bedrocks (5) at two ends of a section of subgrade, wherein a plurality of settlement piles (2) are arranged on the subgrade at equal intervals based on the two reference piles (1), and is characterized by further comprising a guide rail (3), a monitoring vehicle and a monitoring center;
the guide rail (3) is erected on the reference pile (1) and the sedimentation piles (2) through a plurality of support rods (4), and position markers (14) are arranged at the positions, opposite to each sedimentation pile (2), of the guide rail (3);
the monitoring vehicle comprises a vehicle body (7) and a monitoring vehicle controller, wherein an electric guide wheel assembly (8) connected with the monitoring vehicle controller is mounted on the vehicle body (7), the vehicle body (7) is erected on the guide rail (3) through the electric guide wheel assembly (8), a position detector (15), a height detection device and a communication module are arranged on the vehicle body (7), the position detector (15) is connected with the monitoring vehicle controller and used for detecting position markers (14) on the guide rail (3), the height detection device is connected with the monitoring vehicle controller and used for acquiring vehicle body height values when the vehicle body (7) stops on the position markers (14) one by one, and the communication module is used for sending the acquired vehicle body height values to a monitoring center;
the height detection device comprises a support (16) which is slidably mounted in a vehicle body (7) and an infrared receiver (17) which is positioned outside the vehicle body (7) and connected with the support (16), a screw rod (20) connected with the support (16) is mounted in the vehicle body (7), a lifting motor (21) which is connected with the screw rod (20) and used for driving the infrared receiver (17) to lift up and down is arranged in the vehicle body (7), and a monitoring encoder (22) is mounted on the lifting motor (21);
an infrared emitter (18) is arranged at one end of the guide rail (3);
when the position detector (15) detects a position marker (14) on the guide rail (3), the monitoring vehicle controller controls the infrared receiver (17) to start and judges whether infrared light emitted by the infrared emitter (18) is received, if not, the lifting motor (21) is controlled to rotate to adjust the vertical position of the infrared receiver (17), and further judges whether the infrared receiver (17) receives the infrared light emitted by the infrared emitter (18), if so, a height adjustment value recorded by the monitoring encoder (22) is obtained and compared with a preset reference height value to obtain a vehicle height value.
2. The roadbed settlement monitoring system according to claim 1, wherein the guide rail (3) is provided with a conductive electric core (6) along the length direction thereof, the starting end of the conductive electric core (6) is connected with a power supply, a power module (10) for providing electric energy of the monitoring vehicle is arranged in the vehicle body (7), a conductive contact (12) contacted with the conductive electric core (6) is arranged at the bottom of the vehicle body (7), a conductive cable (13) is arranged on the vehicle body (7), one end of the conductive cable (13) is connected with the conductive contact (12) and the other end is connected with the input end of the power module (10).
3. A system for monitoring subgrade settlement according to claim 2, characterized in that said power module (10) is a lithium battery.
4. A system for monitoring the settlement of a roadbed according to claim 1, characterized in that the position detector (15) uses a proximity switch and the position marker (14) uses a metal detector.
5. The subgrade settlement monitoring system of claim 1, wherein said monitoring vehicle controller is further configured to control the reset of the height position of the infrared receiver (17) after acquiring the height adjustment value recorded by the monitoring encoder (22).
6. The roadbed settlement monitoring system according to claim 1, wherein two ends of the guide rail (3) are respectively provided with a baffle plate (23), two sides of the vehicle body (7) are respectively provided with a contact switch (24) capable of contacting with the baffle plates (23), the contact switches (24) are connected with a monitoring vehicle controller, and the monitoring vehicle controller is connected with a timing module;
when the contact switch (24) is in contact with the baffle plate (23), a trigger signal is output to the monitoring vehicle controller, the monitoring vehicle controller responds to the trigger signal to control the electric guide wheel assembly (8) to stop running, and the timing module controls the electric guide wheel assembly (8) to move reversely after a preset period.
7. The roadbed settlement monitoring system as claimed in claim 1, wherein a storage module for storing the acquired vehicle body height value is connected to the monitoring vehicle controller.
8. The roadbed settlement monitoring system as claimed in claim 1, wherein the monitoring center is provided with a monitoring unit and a warning unit;
the monitoring unit is used for comparing the obtained height value of the vehicle body with a preset reference height value one by one to obtain a difference value of the obtained height value and the preset reference height value, judging whether the difference value is greater than a threshold value or not, and controlling the warning unit to send warning information if the difference value is greater than the threshold value.
9. A method of monitoring subgrade settlement using a system for monitoring subgrade settlement according to any one of claims 1 to 8, comprising the steps of:
an arrangement step: reference piles (1) are installed on bedrocks (5) at two ends of a section of roadbed, a plurality of settlement piles (2) are arranged between the two reference piles (1) at equal intervals, and guide rails (3) are erected on the reference piles (1) and the settlement piles (2) through support rods (4);
a monitoring step: controlling the monitoring vehicle to advance along the guide rail (3), stopping the monitoring vehicle on the guide rail (3) above each settlement pile (2) one by one to obtain a vehicle height value, and sending the obtained vehicle height value to a monitoring center for real-time monitoring;
and (3) circulating step: after the monitoring vehicle walks the roadbed along the guide rail (3), the monitoring vehicle is restarted and moves reversely along the guide rail (3) after a preset period so as to repeat the monitoring step.
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| CN109238223B (en) * | 2018-07-30 | 2021-04-27 | 中铁七局集团西安铁路工程有限公司 | Differential settlement accumulation measuring method and device |
| CN109837824B (en) * | 2018-11-08 | 2021-02-23 | 廊坊师范学院 | Highway road surface settlement monitoring and early warning system |
| CN110411509A (en) * | 2019-07-17 | 2019-11-05 | 贵州新泰安科技有限公司 | A kind of building O&M monitoring method and system |
| CN112762912B (en) * | 2021-02-02 | 2023-03-21 | 长江大学 | Section shooting scale support for deposition physical simulation experiment |
| CN113026836A (en) * | 2021-03-19 | 2021-06-25 | 中国建筑第四工程局有限公司 | Construction method for settlement reinforcement of high-rise building |
| CN113483732B (en) * | 2021-06-18 | 2023-06-13 | 安徽博晟亿电力科技有限公司 | High-speed railway wheel track settlement monitoring system and implementation method thereof |
| CN116989742B (en) * | 2023-09-26 | 2023-12-05 | 中国建筑第六工程局有限公司 | Method and device for judging non-uniform settlement of building based on RS technology |
| CN117824579B (en) * | 2023-12-25 | 2024-06-21 | 中铁十六局集团地铁工程有限公司 | Roadbed settlement measurement and analysis system based on tunnel road reconstruction engineering |
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