KR102310099B1 - Method and recording medium for detecting pavement inner defect - Google Patents

Abstract

The present invention relates to an invention to detect internal damage (such as deterioration) through GPR on a paved road surface, specifically, which consists of sequential steps comprising: a GPR radiation step (S100) for transmitting and receives GPR wavelength (20) on top of a deck pavement; a data obtaining step (S200) for securing transmitted data (31) and received data (32) of the GPR after the GPR radiation step; and an analysis step (S300) for analyzing the secured obtained data (33) after the data obtaining step.

Description

Method and recording medium for detecting pavement inner defect

The present invention relates to an invention for detecting defects (deterioration, etc.) of an inner surface through GPR on a pavement surface.

Patent Invention 001 is an invention for a device for measuring deterioration of a reinforced concrete structure, specifically, a support in which a plurality of supports having different heights are formed; A technology capable of measuring the time and speed of chlorine ions and carbon dioxide from the surface of the structure to the internal reinforcing bars by presenting an apparatus for measuring deterioration of a reinforced concrete structure comprising a plurality of deterioration measuring sensors mounted on a plurality of supports is presenting

Patent Invention 002 is an invention for a mobile active thermal imaging inspection device for detecting internal delamination of concrete, specifically, a main body, a heating unit installed in the main body to apply heat to the wall surface of the concrete to be inspected, and the heating unit applied by the heating unit A thermal imaging camera installed in the body to take a thermal image of the concrete wall in order to obtain a temperature distribution of the concrete wall by heat, and a thermal image provided from the thermal imaging camera of the concrete wall An image processing unit that analyzes a defective part, and a blocking member that is installed in the body and closes the imaging part to prevent the imaging part of the thermal imaging camera with respect to the concrete wall from being cooled by the flow of air. is presenting

KR 10-1273626 B1 (Registration Date Jun 04, 2013) KR 10-2146695 B1 (registration date August 14, 2020)

An object of the present invention is to provide an invention for detecting defects (deterioration, etc.) of an inner surface through GPR on a pavement surface.

The present invention relates to a method for detecting internal damage of the bridge pavement 10, and specifically, a GPR irradiation step (S100) of transmitting and receiving the GPR wavelength 20 from the upper part of the bridge surface pavement; After the GPR investigation step, data acquisition step (S200) of securing the transmission data 31 and the reception data 32 of the GPR; After the data acquisition step, the analysis step (S300) of analyzing by the secured acquired data 33; consists of time-series steps including.

The present invention relates to a method for detecting internal damage to the bridge surface pavement 10, and in the invention presented above, the data irradiation step is a transmitting step of transmitting two wavelength signals from two GPR devices 100 and transmitter 110, respectively. (S111); After the transmitting step, a receiving step (S112) in which the two receivers 120 at a distance from the transmitter receive each signal; It consists of a time series step including

The present invention relates to a method for detecting internal damage of a bridge pavement 10, and in the invention presented above, after the receiving step, after the sending and receiving steps, the two transmitters and the receivers are separated by the distance and the data measurement time. Measuring step (S113) of measuring the internal conditions of the packaging; It consists of a time series step including

The present invention relates to a method for detecting internal damage to the bridge surface pavement 10, and in the invention presented above, the data irradiation step includes a first transmitting step (S121) in which the transmitter of one GPR device transmits one wavelength signal; After the first transmitting step, a first receiving step (S122) of receiving a wavelength signal by a receiver located at a distance spaced apart from the transmitter; After the first receiving step, the position change step of moving the transmitter and the receiver (S123); a second transmitting step (S124) in which the first transmitting step and the first receiving step are performed again after the location change step; and a second receiving step (S125); It consists of a time series step including

The present invention relates to a method for detecting internal damage of the bridge pavement 10, and in the invention presented above, after the first receiving step and the second receiving step, the analysis step is performed after the sending and receiving steps, each transmitter and measuring step (S126) of measuring the internal conditions of the bridge pavement by the moving distance and data measurement time of the receiver; It consists of a time series step including

The present invention relates to a method for detecting internal damage to the bridge surface pavement 10, and in the present invention presented above, the analyzing step includes a dielectric constant analysis step (S310) of converting the dielectric constant from the calculated value after the measuring step; The analysis step may include, after the measuring step, a pavement layer thickness analysis step of converting the pavement thickness from the calculated value (S320); The analysis step may include, after the measuring step, a moisture content analysis step (S330) of converting the water saturation rate from the calculated value; It consists of a time series step including

The present invention relates to a method for detecting internal damage of the bridge surface pavement 10, and in the invention presented above, the first basic data 51 obtained from the result of the analysis step is stored in the server 60; step (S411); a second storage step (S412) of storing the second basic data 52; Road pavement information is embedded in the third basic data 53; a third storage step (S413) in the server for storing; A fourth storage step (S414) of storing the information of the precipitation amount and the amount of snow in the built-in fourth basic data 54 in the server; A fifth storage step (S415) of storing the built-in fifth basic data (55) of the traffic volume of the bridge in the server; Estimation step (S416) of the server estimating the deterioration rate of the bridge surface from the information of the first storage step to the fourth storage step; It consists of a time series step including

The present invention relates to a method for detecting internal damage to a bridge surface pavement 10, and in the present invention presented above, after the estimation step, a scheduled repair site 61; and a scheduled maintenance time (62); a maintenance scheduled step (S420) of optimally determining; It consists of a time series step including

The present invention relates to a method for detecting internal damage of the bridge surface pavement 10, and in the invention presented above, after the scheduled repair step, after the repair scheduled step, a repair step (S430) of repairing by an administrator; It consists of a time series step including

The present invention relates to a method for detecting internal damage to the bridge surface pavement 10, and in the present invention, after the repair step, a sixth storage step (S440) of storing the repair method and repair material in the server; It consists of a time series step including

The present invention is an invention for a program for detecting internal damage of a bridge surface pavement, and consists of a recording medium recording a program for performing the inventions presented above.

It relates to the method for detecting internal damage to the bridge surface pavement of the present invention,

The present invention measures a plurality of transmitters and a plurality of receivers at different locations,

The amount of deterioration inside the package is judged, and the rate of deterioration can be measured in the analysis stage.

The present invention may have the effect of simultaneously measuring the thickness of the packaging layer and the moisture content.

Since the present invention transmits and receives a plurality of underground exploration radars, it is possible to secure data as a three-dimensional image.

The present invention predicts the amount of deterioration by the amount of salinity input, the amount of precipitation and snow load, road construction information, and the like, and enables predictive maintenance.

The present invention measures the amount of deterioration during the maintenance process, provides it to the server, and can be used as learning data, so that the accuracy of the artificial intelligence program can be secured.

1 and 2 are flow charts of the method for detecting internal damage to the bridge surface pavement of the present invention.
Figure 3 is a detailed flow chart of the present invention bridge pavement measurement step.
Figure 4 is a detailed flow chart of the present invention bridge pavement maintenance scheduled step.
5 and 6 are conceptual views of the measurement result of the internal damage of the bridge surface pavement of the present invention.
7 and 8 are conceptual diagrams of transmitting light for measuring internal damage to the bridge pavement of the present invention.

Hereinafter, the most preferred embodiment of the present invention will be described in detail in order to explain in detail enough that a person skilled in the art to which the present invention pertains can easily carry out the present invention.

The numbers cited in the examples below are not limited only to the objects of reference, and may be applied to all examples. Objects exhibiting the same purpose and effect as the configuration presented in the examples correspond to equivalent replacement objects. The higher-level concept presented in the examples includes sub-concept objects that are not described.

[Example 1] The present invention relates to a method for detecting internal damage of the bridge pavement 10, and specifically, a GPR irradiation step (S100) of transmitting and receiving the GPR wavelength 20 from the top of the bridge surface pavement; After the GPR investigation step, data acquisition step (S200) of securing the transmission data 31 and the reception data 32 of the GPR; After the data acquisition step, the analysis step (S300) of analyzing by the secured acquired data 33; consists of time-series steps including.

The present invention (see Example 1) is an invention of a method for detecting internal damage such as deterioration damage inside a bridge pavement.

In the case of a pavement with layers of asphalt and concrete, the inner concrete layer deteriorates due to the salt sprayed on the pavement.

Due to the deterioration of concrete, the structure of the concrete surface is crushed, which causes pavement damage and sinkholes. Damage (deterioration) located inside the surface is detected by GPR (Ground Penetrating radar). As another embodiment, an RD (Radio Detector) by the electromagnetic induction detection technique may be used instead.

Specifically, it is located on the upper part of the bridge pavement and transmits the radar wave to the ground by the GPR device that detects the inside, and receives the wavelength reflected from the ground. By measuring the time and waveform of the transmitted and received wavelengths, it is possible to grasp the internal state of the package. In particular, it is possible to accurately grasp the deterioration occurring between the concrete slab located above the girder of the bridge and the asphalt pavement above the slab.

As an embodiment, the time-series step includes a GPR irradiation step of irradiating radar to the pavement by a GPR device and receiving a reflected wave, a data acquisition step of securing transmission data and reception data with respect to time after GPR irradiation, and It consists of an analysis step that analyzes the inside by

As another embodiment, the GPR investigation step and the data acquisition step may be performed at the same time.

The GPR wavelength is generated by a GPR device mounted on a carrier, and the carrier is formed in a self-propelled, towed, and detachable type, and in the case of a self-propelled type, is driven by its own power source, and the towed and detachable type is mounted on a conventional vehicle and driven. The tow type and detachable type can utilize the power and power of the vehicle.

The GPR device is equipped with an automatic height control device, which can maintain a uniform distance between the device and the road surface. The present invention is not limited to bridge pavement, but can also be applied to pavement roads that are combined with concrete and asphalt.

[Embodiment 2] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement, and in Embodiment 1, the data irradiation step is to transmit two wavelength signals from the two GPR devices 100 and the transmitter 110, respectively. Multi-wavelength transmission step (S111); The multi-wavelength transmitting step, the multi-wavelength receiving step (S112) of receiving each signal by the two receivers 120 spaced apart from the transmitter; It consists of a time series step including

[Example 3] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement, and in Example 2, after the multi-wavelength transmission step and the multi-wavelength reception step, the separation distance between the two transmitters and the receiver and the data measurement time Measuring step (S113) of measuring the internal conditions of the bridge pavement; consists of a time series step including.

[Embodiment 4] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement, and in Embodiment 1, the data irradiation step is a first transmission step (S121) in which the transmitter of one GPR device transmits one wavelength signal. ); After the first transmitting step, a first receiving step (S122) of receiving a wavelength signal by a receiver located at a distance spaced apart from the transmitter; After the first receiving step, the position change step of moving the transmitter and the receiver (S123); a second transmitting step (S124) in which the first transmitting step and the first receiving step are performed again after the location change step; and a second receiving step (S125).

[Example 5] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement, and in Example 4, after the first receiving step and the second receiving step, the analysis step is after the sending step and the receiving step, respectively The measuring step (S126) of measuring the internal conditions of the bridge pavement by the transmitter and receiver moving distance and data measurement time (S126); consists of time series steps including.

The present invention (refer to Examples 1 to 5) proposes a method according to a combination of a radar transmitter and a receiver. The two transmitters are installed at different inclination angles but coincide with one measuring point, and the two radars reflected from the measuring point receive the radar wavelength from each receiver. The receiver and the transmitter are each symmetrically formed based on the measurement position.

The transmitter may be formed in one or a plurality. Preferably two transmitters and two receivers can be mounted.

As another embodiment, the two transmitters may each oscillate a wavelength at the same time or may oscillate a wavelength at a different time.

The GPR device of the present invention can measure while moving. Accordingly, the first reception is performed by the first transmission, and in the position change state, the second sending step and the second receiving step can be performed as steps. A plurality of the transmitters and receivers presented above may be arranged and mounted on one plate, and the plate is installed on one carrier device.

[Example 6] The present invention is an invention for a method for detecting internal damage of a bridge pavement, and in Example 3, the present invention is an invention for a method for detecting internal damage of a bridge surface pavement, and in Example 5, the analysis step is After the measuring step, a dielectric constant analysis step of converting the dielectric constant from the calculated value (S310); The analysis step may include, after the measuring step, a pavement layer thickness analysis step of converting the pavement thickness from the calculated value (S320); The analysis step consists of a time series step including; after the measuring step, a moisture content analysis step (S330) of converting the water saturation rate from the calculated value.

The present invention (see Example 6) is directed to the analysis step. By analyzing the time of the transmitter and the receiver, the dielectric constant can be analyzed, and the thickness of the pavement layer made of asphalt can be measured. It is also possible to measure the moisture present between asphalt and concrete.

The two-dimensional vertical cross-sectional data measured while one GPR device is moving can secure a three-dimensional shape by simultaneous measurement by arranging a plurality of GPR devices, and it is possible to check the distribution area on a plane from the three-dimensional shape.

The analysis step is analyzed from the results obtained as three-dimensional data, and in order to ensure data accuracy, a calibration step is performed before the analysis step. That is, the calibration step is performed before the GPR irradiation step.

The calibration step is performed by driving the GRP device in a standardized test bed, and comparing the results of the GPR device with the numerical value of the artificial interference location in the test bed. The calibration steps are plural, and the plurality of calibration steps are performed in different test beds. After the calibration step, the measured values of the GPR tester are accurately digitized and adjusted by the adjustment process. Therefore, the dielectric constant, the thickness of the packaging layer, and the moisture content are measured accurately.

[Example 7] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement, and in Example 1, the first basic data 51 obtained from the result of the analysis step is stored in the server 60; 1 storage step (S411); a second storage step (S412) of storing the second basic data 52; Road pavement information is embedded in the third basic data 53; a third storage step (S413) in the server for storing; A fourth storage step (S414) of storing the information of the precipitation amount and the amount of snow in the built-in fourth basic data 54 in the server; A fifth storage step (S415) of storing the built-in fifth basic data (55) of the traffic volume of the bridge in the server; It consists of time-series steps including; an estimation step (S416) of the server estimating the deterioration rate of the bridge surface from the information of the first storage step to the fourth storage step.

[Embodiment 8] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement. and a scheduled maintenance step ( S420 ) of optimally determining the scheduled maintenance time ( 62 ).

[Embodiment 9] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement, and in Embodiment 8, after the maintenance scheduled step, after the maintenance scheduled step, a maintenance step (S430) of repair by an administrator; It consists of a time series step including

[Example 10] The present invention relates to a method for detecting internal damage to a bridge surface pavement, and in Example 9, after the repair step, a sixth storage step (S440) of storing the repair method and repair material in the server; includes; It consists of time-series steps.

[Example 10-2] The present invention is an invention for a method for detecting internal damage to a bridge surface pavement, and in Example 10, after the repair step, a seventh storage step (S450) of storing the measured deterioration amount in a server; It consists of time-series steps that include

The present invention (refer to Examples 7 to 10) is for the purpose of predicting the deterioration rate in advance. The degradation rate is directly affected by salinity, and the amount of salt used and the degree of salt input act as dominant variables on the degradation rate depending on the climatic and pavement conditions.

Therefore, comprehensive information on the number of times of salt spraying, the amount of powder spraying, road pavement information, precipitation and snow load, and traffic volume is stored in the storage device of the server and used as big data (BD). In particular, the actual chlorination rate can be inferred from the data of the initial analysis result (the first basic data) and the data presented above, which can predict the scheduled repair site and time. Damage to the pavement surface can be judged in advance by predicting the repair time and location.

Also, in the repair process, the deterioration rate inside the pavement layer is checked, and the confirmed deterioration rate is stored in the server. The stored deterioration rate can be used as learning data to improve the accuracy of artificial intelligence programs.

In addition, materials and methods used in the repair process can be stored in the server, and can be used as data to determine the influence of the repair site. Therefore, it is possible to obtain the effect of securing the optimal maintenance conditions as data.

[Embodiment 11] The present invention is an invention for a program for performing a method for detecting internal damage to a bridge surface pavement, and a recording medium 900 recording a program performed by any one method selected from Examples 1 to 10;

10: bridge pavement 20: GPR wavelength
31: transmitted data 32: received data
33: acquired data 51: first basic data
52: second basic data 53: third basic data
54: 4th basic data 55: 5th basic data
60: Server 61: Scheduled repair place
62: scheduled maintenance time 100: GPR device
110: transmitter 120: receiver

Claims (11)

In the method for detecting internal damage of the bridge surface pavement (10),
GPR irradiation step (S100) of transmitting and receiving the GPR wavelength 20 from the top of the bridge pavement;
After the GPR investigation step, data acquisition step (S200) of securing the transmission data 31 and the reception data 32 of the GPR;
After the data acquisition step, an analysis step (S300) of analyzing the obtained data (33) secured;
In the GPR irradiation step, the two GPR apparatus 100 transmits two wavelength signals from the transmitter 110, respectively, and the two transmitters 110 installed at different inclination angles are installed to match one measurement point, A multi-wavelength transmitting step (S111) of arranging two transmitters to be symmetrically formed with respect to a point, respectively, and transmitting a wavelength signal;
After the multi-wavelength transmitting step, a multi-wavelength reception step (S112) in which two receivers 120 spaced apart from the transmitter receive respective signals;
After the multi-wavelength transmitting step and the multi-wavelength receiving step, a measurement step (S113) of measuring the internal conditions of the bridge pavement by the distance between the two transmitters and the receiver and the data measurement time (S113);
The analysis step may include a dielectric constant analysis step (S310) of converting the dielectric constant from the calculated value after the measuring step;
The analysis step may include, after the measuring step, a pavement layer thickness analysis step of converting the pavement thickness from the calculated value (S320);
The analysis step may include, after the measuring step, a moisture content analysis step (S330) of converting the water saturation rate from the calculated value;
a first storage step (S411) of storing the first basic data 51 including the dielectric constant, the pavement thickness and the water saturation rate obtained from the result of the analysis step in the server 60;
A second storage step (S412) of storing the second basic data (52) in which the number of times of salt spraying, the amount of salt spraying, and salt spraying cycle information are embedded;
Road pavement information is embedded in the third basic data 53; a third storage step (S413) in the server for storing;
Precipitation and snow cover information is embedded in the fourth basic data 54; to store in the server
a fourth storage step (S414);
A fifth storage step (S415) of storing the built-in fifth basic data (55) of the traffic volume of the bridge in the server;
From the information of the first storage step to the fourth storage step, the server estimates the deterioration rate of the bridge
estimating step (S416);
After the estimating step, the scheduled maintenance location (61); and a scheduled maintenance time (62); a maintenance scheduled step (S420) of optimally determining;
After the maintenance scheduled step, after the maintenance scheduled step, a maintenance step (S430) of being repaired by a manager;
After the repair step, a sixth storage step of storing the repair method and repair material in the server (S440);
After the maintenance step, a seventh storage step (S450) of storing the measured deterioration amount in the server;
includes,
In the estimating step (S416), the chlorination rate value is inferred through the second to fourth basic data, and the deterioration rate is predicted in advance through the first basic data and the chlorination rate value,
The repair scheduled step (S420) predicts the scheduled repair site and scheduled repair time based on the predicted deterioration rate,
The repair method and repair material stored in the sixth storage step and in the seventh storage step
The stored deterioration amount is used as learning data to understand the impact on the repair site.
A method for detecting internal damage to the bridge surface pavement including.
delete delete The method according to claim 1,
The GPR irradiation step may include a first transmitting step (S121) in which the transmitter of any one GPR device among the two GPR devices transmits one wavelength signal;
After the first transmitting step, a first receiving step (S122) of receiving a wavelength signal by a receiver located at a distance spaced apart from the transmitter;
After the first receiving step, the position change step of moving the transmitter and the receiver (S123);
a second transmitting step (S124) in which the first transmitting step and the first receiving step are performed again after the location change step; And a second receiving step (S125); Bridge surface pavement internal damage detection method comprising a.
5. The method according to claim 4,
The analysis step is after the first receiving step and the second receiving step, measuring step (S126) of measuring the internal conditions of the bridge pavement by the moving distance and data measurement time of each transmitter and receiver; Way.
delete delete delete delete delete A recording medium on which a program executed by any one method selected from among 1, 4 and 5 is recorded.

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