JP2019086498A - Rebar counting device, determination method of reinforced concrete column, and reinforced concrete column determination system - Google Patents

Abstract

To provide a reinforcement counter capable of simply counting the number of reinforcements buried at an interval in the circumferential direction in a reinforced concrete column having a peripheral surface formed as a curved surface.SOLUTION: A reinforcement counter 10 for counting the number of reinforcements buried at an interval in the circumferential direction in a reinforced concrete column having a peripheral surface formed as a curved surface comprises: a travel part 1 having a pair of wheel parts 13 and 13 attached so as to project an axle center on the bottom of a box part 11; a sensor part 2 for detecting the reinforcement arranged between the pair of wheel parts; and output parts (5 and 6) for outputting the detection result of the sensor part. The sensor part is attached in a state separated on the box part side from the heights of the contact surfaces of the wheel parts.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a reinforcing bar counting device for counting the number of reinforcing bars embedded at intervals in the circumferential direction in a reinforced concrete column whose circumferential surface is curved, and a method of identifying a reinforced concrete column for identifying the type of reinforced concrete column It is about the system.

As disclosed in Patent Document 1, there is known a method (nondestructive diagnostic method) of diagnosing a deterioration state of reinforcing bars inside a reinforced concrete column such as a utility pole without destroying the concrete column.
In the nondestructive diagnostic method of Patent Document 1, a coil is wound so as to make one turn around a utility pole, an alternating current is caused to flow, and the impedance is measured and compared with a standard value to determine a reduction in iron amount due to rebar.

  In addition, Patent Document 2 discloses a method of inspecting corrosion of reinforcing bars of a concrete column using an electromagnetic induction phenomenon as a nondestructive diagnostic method. Also in this rebar corrosion inspection method, the amount of iron in the whole utility pole is measured, and the amount of reduction in iron is determined by calculating the resistance value of the measurement result from the database showing the relationship between the inductance and resistance of the inspection coil. It has been described that.

  On the other hand, Patent Document 3 discloses a nondestructive diagnostic method using an electromagnetic radar. In this method, a search guideline is drawn in a grid form on the surface of a concrete structure to be a flat surface, and the buried object search device is moved along it.

  On the other hand, Patent Document 4 discloses diagnosing a state of reinforcing bars by observing temperature change using electromagnetic induction heating as a reinforcing bar diagnostic device for cylindrical concrete poles.

JP-A-9-21786 JP, 2011-158438, A JP, 2013-245988, A JP, 2008-292204, A

  However, in the nondestructive diagnostic methods disclosed in Patent Literatures 1 and 2, although the reduction amount of the total amount of iron can be measured, the number of reinforcing bars embedded in the concrete column can not be counted.

  On the other hand, in the buried object search device disclosed in Patent Document 3, the surface to be inspected is limited to a flat surface. Moreover, the rebar diagnostic device which combined electromagnetic induction heating and the temperature detection part disclosed by patent document 4 takes time to heat a rebar, in addition to which a temperature detection part is required, it diagnoses rapidly It is difficult to make

  Therefore, an object of the present invention is to provide a reinforcing bar counting device capable of easily counting the number of reinforcing bars embedded in a reinforced concrete column whose circumferential surface is curved at intervals in the circumferential direction.

  In order to achieve the above object, a reinforcing bar counting device according to the present invention is a reinforcing bar counting device for counting the number of reinforcing bars embedded in a reinforced concrete column whose circumferential surface is curved at intervals in the circumferential direction, Running portion having a pair of wheel portions attached so that the axle center is projected on the bottom portion of the portion, a sensor portion for detecting the reinforcing bar disposed between the pair of wheel portions, and a detection result of the sensor portion And an output unit for outputting the sensor unit, and the sensor unit is attached to the box unit side at a distance from the height of the contact surface of the wheel unit.

  Here, the sensor unit is preferably an electromagnetic induction proximity sensor. The output unit may further include a recording unit that records the detection result of the sensor unit, and a control unit that controls the timing of recording on the recording unit. The recording timing of the control unit can be controlled by a signal from the operation button.

  Also, the invention of the method of identifying a reinforced concrete column is a method of identifying a reinforced concrete column for identifying a type of reinforced concrete column, wherein the number of reinforcing bars embedded in the reinforced concrete column at intervals in the circumferential direction is a nondestructive inspection device. Identifying the type of the reinforced concrete column from the number of rebars counted using a database that can be identified from the number of reinforcing bars embedded with the step of counting with a certain reinforcing bar counting device and the type of the reinforced concrete column It is characterized by having.

  Furthermore, the invention of the reinforced concrete column discrimination system is a reinforced concrete column discrimination system for identifying the type of reinforced concrete column, and the nondestructive inspection device capable of counting the number of reinforcing bars embedded in the reinforced concrete column at intervals in the circumferential direction. The reinforced concrete column by contrasting the rebar counting device which is the database, the database which can be identified from the number of rebars embedded in the type of the reinforced concrete column, the number of rebars detected by the rebar counting device and the database And a determination processing unit that specifies the type of the object.

  In the rebar counting device of the present invention configured as described above, a sensor unit for detecting a rebar is disposed between the wheel units of the traveling unit having the pair of wheel units. And a sensor part is attached in the state which estranged in the box part side from the height of the ground-contact plane of a wheel part.

  For this reason, since a sensor part can be moved smoothly in the state which maintained fixed distance in the peripheral direction of the reinforced concrete pillar whose peripheral surface becomes a curved surface, the number of reinforcing bars embedded in the reinforced concrete pillar at intervals is increased. It can be easily counted.

  In addition, if the detection result by the sensor unit can control the timing and record in the recording unit, the measurement range is divided into one turn, half turn, etc. by start and stop of recording along with movement in the circumferential direction. be able to.

  Furthermore, in the invention of the method of discriminating reinforced concrete columns and the reinforced concrete column discrimination system for identifying types of reinforced concrete columns, a database that can identify the type of reinforced concrete columns from the number of reinforcing bars embedded is used. That is, in the signal column of the railway, etc., the number of rebars embedded differs depending on the manufacturer or the manufacturing age, and it is possible to estimate the manufacturing age by counting the number of rebars, and the replacement time Can be a measure of

It is a block diagram explaining the composition of the reinforcement counting device of this embodiment. It is a side view explaining composition of a signal pole. FIG. 3 is a cross-sectional view of a signal column as viewed in the direction of arrows AA in FIG. It is explanatory drawing which showed the state which made the driving | running | working part of the reinforcement counting device contact the surrounding surface of a signal column. It is an explanatory view which looked at a run part of a reinforcement counting device from the bottom side. It is a figure explaining an example of the detection method which judges the number of rebar from the change rate of the output voltage of a sensor part. It is a figure explaining the example of counting the number of reinforcing bars embedded in the signal column, where (a) shows an example in which three reinforcing bars are counted and (b) shows an example in which six reinforcing bars are counted It shows. FIG. 1 is a block diagram illustrating the configuration of a reinforced concrete column discrimination system according to a first embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram for explaining the configuration of the rebar counting device 10 according to the present embodiment. Moreover, FIG.2, 3 is a figure explaining the structure of the signal equipment post P which is a reinforced concrete pillar.

  The reinforcing-bar-counting device 10 according to the present embodiment counts the number of reinforcing bars T1-T3 embedded in the reinforced concrete column such as the signal column P whose circumferential surface P2 is a curved surface at intervals in the circumferential direction R.

  For example, as shown in FIG. 2, the signal column P, which is a reinforced concrete column used for installing a railway signal, is formed in a tapered cylindrical shape (a frusto-conical shape) whose diameter decreases toward the top. Further, as shown in the cross-sectional view of FIG. 3, the normal signal column P is formed in a hollow cross section.

  A plurality of reinforcing bars T1, T2 and T3 are embedded in the annularly formed concrete portion P1 at intervals in the circumferential direction R. Here, as described above, since the signal column P has a tapered shape (tapered shape), the number of reinforcing bars decreases toward the top. Here, the longest one arranged over the entire length of the signal column P is rebar T1, the shortest one arranged only in the lower half is rebar T3, and the middle one is rebar T2 I assume. Hereinafter, in the case where the length is not specified, the code of the reinforcing bar T will be described.

  The reinforcing bar counting device 10 of the present embodiment counts the number of embedded reinforcing bars T by moving the circumferential surface P2 of the signal column P in the circumferential direction R. That is, the reinforcing bar counting device 10 outputs the detection result of the sensor unit 2 and the traveling unit 1 having the pair of wheel units 13, the sensor unit 2 disposed between the pair of wheel units 13, and 13. And have.

  As shown in FIGS. 4 and 5, the traveling unit 1 is mainly configured by a rectangular box-shaped box-like box 11 and a pair of wheel units 13 and 13 attached to the bottom of the box 11. The box portion 11 has side walls 111 and 111 on the side where the wheel portions 13 and 13 are attached, and the bottom surface on which the sensor portion 2 is disposed is in an open state.

  The pair of wheel portions 13 and 13 are attached to the side walls 111 and 111 of the box portion 11 so that the axle center 12 is projected. Although the case where each wheel part 13 is each attached to the side wall 111 via the attachment axial part 121 is demonstrated in this Embodiment, it is not limited to this. For example, the axles of the pair of wheel portions 13 and 13 may be a common shaft member traversing the box portion 11.

  And the sensor part 2 arrange | positioned in the position projected on the center of the longitudinal direction of the axle shaft center 12 between the wheel parts 13 and 13 is a sensor which makes the reinforcement T detect. Here, an electromagnetic induction type proximity sensor will be described as the sensor unit 2.

  In a sensor that uses an electromagnetic induction phenomenon, when a test probe that generates an AC magnetic field by causing an AC current to flow through an exciting coil approaches a surface to be inspected, the presence of rebar T that is a magnetic substance causes a current to flow. Since it flows and the magnetic field will change further, the reinforcing bar T is detected from the change.

  The sensor unit 2 which is an electromagnetic induction type proximity sensor linearly outputs the distance from the sensor head (sensor surface 21) to the magnetic body as a current or a voltage. For such a sensor unit 2, for example, a proximity sensor having a detectable range of about 40 mm can be used.

  For example, a voltage linearly output from the sensor unit 2 is converted into a digital value by an A / D converter 32 which is an analog-digital conversion circuit as shown in FIG. 1, and is sent to a control unit 4 described later. become. Here, the output cable 31 illustrated in FIGS. 4 and 5 is a part of an output unit that connects the sensor unit 2 and the A / D converter 32.

  As shown in FIG. 4, the sensor unit 2 is attached in a state where the sensor surface 21 is separated D from the height of the ground contact surface 131 of the wheel unit 13 on the box 11 side. It is desirable that the sensor unit 2 which is an electromagnetic induction type proximity sensor bring the sensor surface 21 as close as possible to the surface (circumferential surface P2) of the inspection object as much as possible during measurement. It becomes an obstacle to smooth movement. In addition, it may be difficult to bring all of the disc-shaped sensor surface 21 into contact with the circumferential surface P2 which is a curved surface. In particular, there may be a case where only line contact can be secured on the circumferential surface P2 where the diameter is relatively small and the curvature is large as in the signal column P.

  Therefore, calibration of the sensor unit 2 is performed on the assumption that there is a gap D in advance, and it is sufficient that at least only the presence or absence of the reinforcing bar T can be determined. In short, since it is not necessary to measure the cover thickness of the reinforcing bar T, the sensor unit 2 may not be in contact with the circumferential surface P2. For example, the separation D is set in a range of about 1 mm to 2 mm.

  Further, as shown in FIG. 5, since the sensor unit 2 is mounted so that the center of the sensor surface 21 is disposed directly below the axle center 12, the separation D is always constant even if the box 11 inclines during movement. Maintained. The sensor unit 2 is held at a predetermined position by, for example, a mounting bracket 22 extended from the inner side surface of the box 11.

  A detection signal (detection result) by the sensor unit 2 is sent to the control unit 4 through the output cable 31 and the A / D converter 32. And the reinforcing-bar-counting apparatus 10 of this Embodiment is provided with the recording part 5 and the display part 6 as an output part.

  For example, the display unit 6 displays an instantaneous value detected by the sensor unit 2. For example, the left side of the display unit 6 formed in a rectangular shape with liquid crystal or the like is a numerical value display area 61 for displaying an output value such as voltage, and the right side is an icon display area 62 for visually recognizing the presence or absence of reinforcing bars T. it can.

  On the other hand, the recording unit 5 records the instantaneous value and the detection result by the sensor unit 2 in the period controlled by the control unit 4. The recording unit 5 may use a storage medium such as a flash memory such as an SD memory card or a USB memory, a solid state drive (SSD), or a hard disk.

  In the rebar counting device 10 of the present embodiment, the control unit 4 controls the timing of recording in the recording unit 5. In detail, the recording timing of the control unit 4 is controlled by a signal from the operation button 7.

  As the operation button 7, for example, a start button 71 and a stop button 72 are provided. Before moving the traveling unit 1, the start button 71 is pressed to start recording in the recording unit 5, and the stop button 72 is pressed at an arbitrary timing to stop recording, and one file name is given and stored as a detection result .

  For example, the wheel portion 13 is brought into contact with the circumferential surface P2 of the signal column P with the traveling direction of the traveling portion 1 in the circumferential direction R, and the start button 71 is pressed. Then, when the circumferential surface P2 has made one revolution, the stop button 72 is pressed to complete the recording. As a result, a change in voltage representing the number of reinforcing bars T detected during one rotation is recorded. The timing at which the stop button 72 is pressed may be when the traveling unit 1 has moved a half turn or when it has made a quarter turn. The number of reinforcing bars T for one round can be calculated by doubling or quadrupling each.

  FIG. 6 is an example of the sensor output voltage detected by the sensor unit 2 recorded in the recording unit 5. In this detection result, the horizontal axis represents time, and the vertical axis represents sensor output voltage. When the traveling unit 1 is moved in the circumferential direction R along the circumferential surface P2 of the signal column P, the time on the horizontal axis indirectly indicates the position in the circumferential direction R because time is elapsed along with the movement. become.

  Here, when the examiner moves the traveling unit 1 by hand, the speed does not necessarily become constant. For this reason, even if the reinforcing bars T are arranged at constant intervals in the circumferential direction R, the reinforcing bars T are not detected at constant time intervals as the detection result. In the reinforcing-bar-counting device 10 according to the present embodiment, the presence or absence of the reinforcing bar T may be detected.

  Therefore, an example of a method of detecting the reinforcing bar T will be described with reference to FIG. The sensor output voltage that is the detection result of the sensor unit 2 decreases at the location where the reinforcing bar T exists. Therefore, attention is focused on the rate of change of the sensor output voltage.

  If the examiner moves the traveling unit 1 at a constant speed as much as possible, it is possible to extract a location where the rate of change is increased due to the presence of the reinforcing bar T in the relationship between time and sensor output voltage. For example, when the downslope calculated by the differentiation exceeds a certain value, the starting point E1 approaches the reinforcing bar T, and when the upslope becomes less than the certain value, the ending point E2 moves away from the reinforcing bar T.

  A detection range E in which the reinforcing bar T is detected is between the start point E1 and the end point E2. In short, one detection range E indicates the presence of one reinforcing bar T, and in the example shown in FIG. 6, three reinforcing bars T, T, T are detected.

  FIG. 7 shows an example of counting the number of two reinforcing bars T. In either case, under the control of the start button 71 and the stop button 72, file names are given and recorded in the recording unit 5, respectively.

  In the detection result shown in FIG. 7A, three valleys in which the sensor output voltage decreases appear, and three reinforcing bars T are counted. On the other hand, in the detection result shown in FIG. 7B, since the reinforcing bar T appearing at the right end becomes the first reinforcing bar T counted first, it is counted as six reinforcing bars T.

  Here, the method of detecting the reinforcing bar T is not limited to the one that focuses on the above-mentioned rate of change, for example, a voltage that becomes the threshold F is set, and the sensor output voltage falls below the threshold F It may be a method of determining that “rebar is present” (see FIG. 8).

Next, the operation of the reinforcing bar counting device 10 of the present embodiment will be described.
The rebar counting device 10 according to the present embodiment configured in this manner causes the rebar T to be detected substantially at the center of the axle center 12 between the wheel portions 13 and 13 of the traveling portion 1 having the pair of wheel portions 13 and 13 The sensor unit 2 is disposed. And the sensor part 2 is attached in the state in which the sensor surface 21 was separated D from the height of the ground contact surface 131 of the wheel part 13 on the box part 11 side.

  Therefore, the sensor unit 2 can be smoothly moved in the circumferential direction R of the signal column P in which the circumferential surface P2 is a curved surface while maintaining a constant distance D. Therefore, the sensor unit 2 is embedded in the signal column P at intervals. The number of reinforcing bars T can be easily counted.

  In addition, if the detection result by the sensor unit 2 is configured such that the timing can be controlled by the operation button 7 or the like and recording can be performed in the recording unit 5, the start and stop of the recording By doing this, it is possible to divide the measurement range such as one round or half round.

For example, in the case of counting the number of reinforcing bars T embedded in the signal column P, the traveling unit 1 can be made to make one round in the circumferential direction R, but it can be half-rounded and doubled If it is a method of doubling, the time spent on measurement can be reduced.
Further, even when there is an obstacle around the signal column P and it is not possible to make one round, the number of reinforcing bars T embedded in the signal column P can be counted.

  Then, if the number of reinforcing bars T embedded in the signal column P is determined, it is possible to determine the manufacturer and the manufacturing age. That is, even if the amount of reinforcement (force resistance) required for the signal column P is the same, the required number changes depending on the diameter of the reinforcement T to be used. For this reason, the number of reinforcing bars T embedded in the signal column P may differ depending on the design of the manufacturer.

  For example, in the signal equipment column P manufactured by company A, ten reinforcing bars T are arranged per turn for the ones manufactured in the 1940's, and for one manufactured in the 1940's Five reinforcing bars T are arranged. This is because the company A reviewed the design at each manufacturing age.

  As a result, if it is known that the traffic signal column P manufactured by company A is 10, the manufacturing age can be estimated if the number of reinforcing bars T of the traffic signal column P is measured to be ten. It can be determined that it is time to replace it.

  Furthermore, even if the manufacturer is unknown, the manufacturing age can be estimated by comparing the manufacturing age of the signal device P with the database in which the relationship between the number of reinforcing bars T arranged is recorded. . For this reason, even when there is no nameplate indicating the manufacturer or date of manufacture in the signal column P, or when it is difficult to visually check the nameplate, the number of reinforcing bars T is counted by the reinforcing bar counting device 10 Can be estimated.

  Hereinafter, a reinforced concrete column discrimination system 8 using a nondestructive inspection device similar to the rebar counting device 10 described in the above embodiment will be described with reference to FIG. The same or equivalent parts as the contents described in the above embodiment will be described with the same terms or the same reference numerals.

  The reinforced concrete column discrimination system 8 described in the first embodiment includes a reinforcing bar counting device 10A, which is a nondestructive inspection device capable of counting the number of reinforcing bars T embedded in the signal column P at intervals in the circumferential direction R, and a traffic light Identify the type of the signal post P by comparing the database 92 which can be identified from the number of reinforcing bars T embedded in the type of pillar P with the number of reinforcing bars T detected by the reinforcing bar counting device 10A and the database 92 A determination processing unit 91 is provided.

  About the same structure as the rebar counting device 10 demonstrated in the said embodiment, the overlapping description is abbreviate | omitted. In the display unit 6A which is an output unit of the reinforcing bar counting apparatus 10A of the first embodiment, in addition to the instantaneous value detected by the sensor unit 2 and the icon for recognizing the presence or absence of the reinforcing bar T, the number of reinforcing bars T counted, etc. Can be displayed.

  Further, as the operation button 7A, in addition to the start button 71 and the stop button 72 for controlling the start and end of recording in the recording unit 5, for controlling the output of the determination result by the determination processing unit 91 to the display unit 6A. The determination button 73 or the like can be provided.

  On the other hand, in the database 92, the relationship between the manufacturing age and the number of reinforcing bars T arranged is recorded for each manufacturer of the signal device column P. For example, the number of reinforcements per round of the signal equipment P manufactured in the Showa 30's made by A company is 10, and the number of reinforcements per round of the signal equipment P manufactured in B Showa 30's is 8 The number of rebars per round of a signal column P manufactured in the Showa 30's, manufactured by Company C, Inc., is six, and their relationships are recorded as data.

  Here, the number of reinforcing bars T may be recorded for one rotation, or may be recorded for half rotation or 1/4 rotation. Further, the relationship between the position in the height direction of the signal post P and the number of reinforcing bars T may be recorded, such as the lower part, the middle part, and the upper part of the signal post P.

  The determination processing unit 91 receives the instruction of the arithmetic processing from the control unit 4 at the timing when the determination button 73 is pressed, for example, and performs the determination processing of counting the number of reinforcing bars T. For example, the examiner presses the start button 71, turns the circumferential surface P2 once, presses the stop button 72, and causes the recording unit 5 to record the sensor output voltage for one turn of the signal column P.

  Subsequently, when the examiner presses the determination button 73, the file of the detection result recorded immediately before in the recording unit 5 is taken into the determination processing unit 91. The determination processing unit 91 calculates the number of valleys below the threshold F from the detection result of the sensor output voltage that has been taken in, and sets the number as the number of reinforcing bars T embedded in the signal column P.

  Then, the number of reinforcing bars T thus counted is compared with the data recorded in the database 92 to extract the manufacturer and date of manufacture of the corresponding traffic signal column P. At this time, when there is a plurality of corresponding data, all are extracted.

  The information on the extracted manufacturer and manufacturing age is sent to the control unit 4 as a determination result by the determination processing unit 91, and displayed on the display unit 6A. As a result, the inspector can specify the type of the signal pole P. In addition, the information on the extracted manufacturer and date of manufacture can also be recorded in the recording unit 5.

Even when a plurality of manufacturers and manufacturing dates are displayed, it can be connected to the identification of the type of the signal column P together with other information. In addition, when it is determined that there is a possibility of deterioration, and it is determined whether the replacement time has come, if any of the manufacturing dates displayed on the display section 6A is new, such as less than 30 years, it is It can also be determined that there is no.
In addition, about another structure and an effect, since it is substantially the same as the said embodiment, description is abbreviate | omitted.

  As mentioned above, although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the embodiment and the example, and a design change which does not deviate from the scope of the present invention. Is included in the present invention.

  For example, although the case where an electromagnetic induction type proximity sensor is used as the sensor unit 2 has been described in the embodiment and the first embodiment, the present invention is not limited to this. Just do it.

  In the first embodiment, the reinforced concrete column discrimination system 8 using the reinforcing bar counting device 10A similar to the reinforcing bar counting device 10 described in the above embodiment has been described, but the present invention is not limited thereto. A nondestructive inspection device which can detect the presence or absence of and can count can be used.

  Furthermore, the method of determining a reinforced concrete column according to the present invention is not limited to the method using the rebar counting device 10 or 10A and the determination processing unit 91 and the database 92 described in the embodiment and the first embodiment, For example, a method may be used in which the examiner estimates the manufacturing age from the number of rebars counted by looking at the comparison table.

P Signal column (steel reinforced concrete column)
P2 circumferential surface R circumferential direction T, T1-T3 rebar D separation 10, 10A rebar counting device 1 traveling portion 11 box portion 12 axle center 13 wheel portion 131 contact surface 2 sensor portion 4 control portion 5 recording portion (output portion)
6, 6A display unit (output unit)
7, 7A Operation Button 8 Reinforced Concrete Column Discrimination System 91 Judgment Processing Unit 92 Database

Claims (6)

A rebar counting device for counting the number of rebars embedded in a reinforced concrete column whose circumferential surface is curved at intervals in the circumferential direction,
A traveling portion having a pair of wheel portions attached so that an axle center is projected on a bottom portion of the box portion;
A sensor unit for detecting the reinforcing bar disposed between the pair of wheel units;
And an output unit for outputting the detection result of the sensor unit,
The said sensor part is attached in the state which spaced apart to the said box part side from the height of the ground-contact plane of the said wheel part, The reinforcing-bar-counting device characterized by the above-mentioned.   The rebar counting device according to claim 1, wherein the sensor unit is an electromagnetic induction type proximity sensor.   The reinforcing bar according to claim 1 or 2, further comprising: a recording unit for recording the detection result by the sensor unit as the output unit, and a control unit for controlling the timing of recording on the recording unit. Counting device.   4. The rebar counting device according to claim 3, wherein the timing of recording of the control unit is controlled by a signal from an operation button. A method of identifying a reinforced concrete column for identifying the type of reinforced concrete column,
Counting the number of rebars embedded in the reinforced concrete column at intervals in the circumferential direction by a rebar counting device which is a nondestructive inspection device;
And a step of identifying the type of the reinforced concrete column from the number of rebars counted using the database that can be specified from the number of reinforcing bars embedded the type of the reinforced concrete column. How to determine It is a reinforced concrete column discrimination system that specifies the type of reinforced concrete column,
A rebar counting device which is a nondestructive inspection device capable of counting the number of rebars embedded in the reinforced concrete column at intervals in the circumferential direction;
A database that can identify the type of the reinforced concrete column from the number of embedded reinforcing bars,
A reinforced concrete column discrimination system comprising: a determination processing unit that identifies the type of the reinforced concrete column by comparing the number of reinforcing bars detected by the reinforcing bar counting device with the database.