JP2022179723A - Concrete placing management system - Google Patents

Abstract

PURPOSE: To provide a concrete compaction vibrator which can perform proper compaction, and which can acquire high-quality concrete.

CONSTITUTION: A vibrator is inserted into placed concrete and compacts the concrete by vibrating, the vibrator including: a first sensor for detecting whether or not the vibrator is in a state of being inserted into the concrete; and a second sensor for detecting whether or not the vibrator is inserted to the depth prescribed for the concrete. Whether or not the vibrator is in a state of being inserted into the concrete and whether or not the vibrator is inserted to the depth prescribed for the concrete are detected, and also, by the time change of signals of the first sensor and the second sensor, a pull-out speed of the vibrator from the concrete is detected.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to a concrete compaction vibrator and a concrete placement management system, and more specifically, a concrete compaction vibrator capable of obtaining high-quality concrete by controlling the compaction and placement conditions of placed concrete within an appropriate range. and a concrete placement management system.

In order to obtain high-quality concrete, it is necessary not only to mix the ready-mixed concrete, but also to adjust various conditions such as casting speed, compaction time, joint time, and overlapping time. is managed within an appropriate range.

In particular, if the casting speed is too fast than the appropriate conditions, the lateral pressure will increase, increasing the risk of formwork swelling (deformation) and collapse of formwork and shoring.
If the compaction vibrator operates for a short period of time, the compaction will be insufficient, and if it is long, the ingredients will separate.
In addition, cold joints occur when the joint time/overlap time exceeds a predetermined time.
In any case, it has been clarified that inconveniences such as defective concrete tend to occur when it is out of the appropriate range.

Therefore, conventionally, a technology (Patent Document 1) that detects the filling height of the placed concrete by a sensor, calculates the placing speed, and issues a warning when it deviates from the appropriate range (Patent Document 1). Technology that calculates and manages the compaction time by detecting the insertion and removal of the compaction vibrator with a magnetic flux detection sensor arranged outside the formwork (Patent Document 2), and fills concrete with a sensor embedded in the place where it is placed. Various techniques have been proposed (Patent Literature 3, Patent Literature 4), etc. for calculating and managing the placement time by detecting the amount, and calculating and managing the joint placement time and the overlapping placement time.

JP 2009-083353 A JP 2012-193601 JP 2013-209801 JP 2012-172375 A

In the technique of Patent Document 1, a single-point laser rangefinder is used as a sensor for detecting the filling height of placed concrete. If there is misalignment or blurring of the axis, it may misdetect the reinforcing bars (width stop bars, etc.) and surface water in the placement location, and the accuracy of the measurement value may be lacking. It has a problem.

In the technique of Patent Document 2, since the compaction by the compaction vibrator is grasped only by the time when it is inserted into the placed concrete, the compaction condition is insufficient to obtain high-quality concrete. have.

In the techniques of Patent Documents 3 and 4, since the sensor for detecting the filling amount of concrete is embedded in the concrete to be poured, there is a problem that the sensor remains in the concrete as a foreign matter. .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a concrete compaction vibrator capable of performing appropriate compaction and obtaining high-quality concrete.
Another object of the present invention is to provide a highly reliable concrete placement management system capable of accurately grasping the concrete placement situation.

The present invention for solving the above problems has the following configuration.
・Claim 1
a rotating scan laser or a 3D laser, or both, positioned above the concrete pouring area and directed toward the pouring location;
The scan laser or 3D laser is configured to measure the height of the concrete placing surface and the transition of the height,
Two or more of either one or both of the rotating scanning laser and the 3D laser are arranged, and the measurement ranges of the adjacent rotating scanning lasers or 3D lasers partially overlap. facility management system.
・Claim 2
Measurement to remove obstacles in the concrete placement area that hinder the measurement of the height of the concrete placement surface and the transition of the height by either or both of the rotating scan laser and 3D laser from the measurement. 2. The concrete placement management system according to claim 1, wherein the obstacle algorithm is preset.
・Claim 3
One or more of the casting start time, casting time, casting amount, casting speed, casting surface height, and casting surface inclination are recorded and managed. 3. A concrete placement management system according to Item 1 or 2.
・Claim 4
4. The concrete placement management system according to any one of claims 1 to 3, characterized in that it is configured to record and manage joint placement time and overlapping placement time.
・Claim 5
5. The concrete placement management system according to any one of claims 1 to 4, wherein the position where the compaction vibrator is inserted is detected by either one or both of a rotating scan laser and a 3D laser.
・Claim 6
The concrete placement range is photographed by a camera,
By analyzing the captured video, the position of the worker who operates the compaction vibrator is identified,
6. The compaction vibrator manages the position information of compaction of the concrete by specifying the position of the worker at the time when the compaction vibrator is inserted into the concrete. The concrete placement management system described in .
・Claim 7
Concrete placing according to any one of claims 1 to 6, wherein the vibrator insertion time, compaction time, insertion depth and withdrawal speed are managed for each position where concrete is compacted. management system.
・Claim 8
By plotting the compaction positions of concrete on a map that represents the concrete placement area and connecting these plots with lines in order of the vibrator insertion time, the trajectory of the compaction positions can be expressed. The concrete placement management system according to any one of claims 1 to 7.
・Claim 9
Predetermined values are set for the compaction time of concrete by the vibrator, the insertion depth of the vibrator, and the withdrawal speed, and the quality of concrete compaction is determined by whether or not each of these values is satisfied. Item 9. A concrete placement management system according to any one of items 1 to 8.
・Claim 10
A claim characterized in that the number of times compaction work is performed is specified in a predetermined area within the range of concrete placement, and the quality of concrete compaction is determined by whether or not the specified number of times has been carried out. Item 10. A concrete placement management system according to any one of Items 1 to 9.

The following configurations can be cited as related inventions of the present invention.
1. A vibrator that is inserted into cast concrete and compacts the concrete by vibrating,
The vibrator has a first sensor that detects whether or not it is inserted into concrete, and a second sensor that detects whether or not it has been inserted into concrete to a prescribed depth,
Detecting whether or not it is in a state of being inserted into concrete and whether or not it has been inserted into concrete to a specified depth,
A configuration in which the speed of the vibrator withdrawing from the concrete is detected based on changes over time in the signals of the first sensor and the second sensor;
A concrete compaction vibrator characterized by:

2. Withdrawal time, which is the time required for the vibrator to be pulled out of the concrete, from the difference between the time when the second sensor detected that it was pulled out of the concrete and the time when it was detected that the first sensor was pulled out of the concrete. calculate,
2. The concrete compaction vibrator according to claim 1, wherein the withdrawal speed is derived from the withdrawal time and the insertion depth of the vibrator calculated from the distance between the first sensor and the second sensor.

3. 3. The concrete compaction vibrator according to claim 1, wherein a plurality of second sensors are provided at predetermined intervals in the longitudinal direction.

4. The concrete compaction vibrator according to any one of claims 1 to 3, wherein the first sensor and the second sensor are detachable from the vibrator.

5. The first sensor and the second sensor constitute a sensor member by being attached to a sheath-like (sack-like) or cylindrical member,
5. The concrete fastener according to claim 4, wherein the sensor member is attached to the vibrator by inserting the vibrating portion of the vibrator into the sheath-like or cylindrical member of the sensor member. firm vibrator.

6. The sensor member has an electric wire that propagates the signals of the first sensor and the second sensor,
6. The concrete compaction vibrator according to claim 4 or 5, wherein the electric wire is connected to the vibrator body by a connector.

7. At least one state of the vibrator being inserted into the concrete, being inserted to a specified depth in the concrete, deviating from the specified depth in the concrete, or being pulled out of the concrete. The concrete compaction vibrator according to any one of claims 1 to 6, wherein the first sensor or the second sensor detects the detected information and directly and/or indirectly informs the operator of the detected information.

8. At least one state of the vibrator being inserted into the concrete, being inserted to a specified depth in the concrete, deviating from the specified depth in the concrete, or being pulled out of the concrete. The concrete according to any one of claims 1 to 7, wherein the first sensor or the second sensor detects and based on the detected information, the vibration operation of the vibrator is controlled to start and stop. Compaction vibrator.

9. The construction is characterized in that it directly and/or indirectly informs the operator whether or not the vibrating operation time of the vibrator inserted into the specified depth in the concrete has passed the specified time. A concrete compaction vibrator according to any one of claims 1 to 8.

10. The construction is characterized in that it directly and/or indirectly informs the worker whether or not the extraction speed is within a specified range based on the detected extraction speed information of the vibrator from the concrete. 10. A concrete compaction vibrator according to any one of 1 to 9.

11. Information on whether or not the vibrator has been inserted to the specified depth in the concrete, information on the vibrating operation time from when the vibrator is inserted to the specified depth in the concrete until it is pulled out, and information on the speed at which the vibrator is pulled out of the concrete. A concrete compaction vibrator according to any one of claims 1 to 10, characterized in that it has a recording unit for recording at least one piece of information.

12. 12. The concrete compaction vibrator according to claim 11, further comprising means for detecting or inputting a position where the vibrator is inserted, and a recording unit for recording the detected or input position information.

13. Display at least one of information on whether or not the vibrator is inserted to a prescribed depth in the concrete, information on the vibrating operation time from insertion to withdrawal, and information on the withdrawal speed from the concrete. The concrete compaction vibrator according to any one of claims 1 to 12, characterized in that it has a display section.

14. 14. The concrete compaction vibrator according to claim 13, further comprising means for detecting or inputting the position where the vibrator is inserted, and a display section for displaying the detected or input positional information.

15. When placing concrete using the concrete compaction vibrator according to any one of claims 1 to 14,
The concrete placement range is photographed by a camera,
By analyzing the captured image, the position of the worker who operates the compaction vibrator is specified,
A concrete placement management system, wherein the location information of compaction of concrete is managed by specifying the position of the worker at the time when the compaction vibrator is inserted into the concrete.

16. 16. The concrete placing management system according to claim 15, wherein the insertion time, compaction time, insertion depth and withdrawal speed of the vibrator are managed for each position where concrete is compacted.

17. By plotting the compaction positions of concrete on a map that represents the concrete placement area and connecting these plots with lines in order of the vibrator insertion time, the trajectory of the compaction positions can be expressed. 17. Concrete placement management system according to claim 15 or 16.

18. 18. The concrete placement management system according to claim 17, wherein the quality of concrete compaction is indicated by giving a predetermined mark to the plot.

19. Predetermined values are set for the compaction time of concrete by the vibrator, the insertion depth of the vibrator, and the withdrawal speed, and the quality of concrete compaction is determined by whether or not each of these values is satisfied. Item 19. A concrete placement management system according to any one of items 15 to 18.

20. A claim characterized in that the number of times compaction work is performed is specified in a predetermined area within the range of concrete placement, and the quality of concrete compaction is determined by whether or not the specified number of times has been carried out. Item 19. A concrete placement management system according to any one of items 15 to 18.

21. In a situation where multiple compaction vibrators are operating at the same time in one concrete placement range,
21. The compaction vibrator according to any one of claims 15 to 20, wherein an arbitrary compaction vibrator among the plurality of compaction vibrators is specified by identifying the color of the helmet of the worker who operates the compaction vibrator. concrete placement management system.

The following configurations can be cited as related inventions of the present invention.

(1) A vibrator that is inserted into cast concrete and compacts the concrete by vibrating,
a sensor for detecting whether or not the vibrator is in a state of being inserted into concrete;
Detecting whether or not it is in a state of being inserted into concrete and whether or not it has been inserted into concrete to a specified depth,
A configuration in which the speed at which the vibrator is pulled out of the concrete is detected based on changes over time in the signals of the two sensors;
A concrete compaction vibrator characterized by:

(2) At least one of the following: the vibrator was inserted into the concrete, inserted to a specified depth in the concrete, deviated from the specified depth in the concrete, and pulled out of the concrete. The concrete compaction vibrator according to the above (1), characterized in that a sensor detects the state and directly and/or indirectly notifies the operator of the detected information.

(3) At least one of the following: the vibrator was inserted into concrete, inserted to a specified depth in concrete, deviated from the specified depth in concrete, and pulled out of concrete. A concrete compaction vibrator according to the above (1) or (2), characterized in that a sensor detects the state, and based on the detected information, the start/stop of the vibration operation of the vibrator is controlled.

(4) The construction is characterized in that it directly and/or indirectly informs the operator whether or not the vibrating operation time of the vibrator inserted in the specified depth in the concrete has reached the specified time. A concrete compaction vibrator according to any one of (1) to (3) above.

(5) Based on the detected speed information of the vibrator withdrawing from the concrete, it is characterized in that the operator is directly and/or indirectly notified of whether or not the withdrawal speed is within a specified range. A concrete compaction vibrator according to any one of (1) to (4) above.

(6) The concrete compaction vibrator according to (5) above, wherein the speed at which the vibrator is pulled out of the concrete is calculated by acceleration measurement or pulse wave measurement.

(7) Information on whether or not the vibrator has been inserted to the specified depth in the concrete, information on the vibrating operation time from when the vibrator is inserted to the specified depth in the concrete until it is pulled out, and information on the extraction speed from the concrete. The concrete compaction vibrator according to any one of the above (1) to (6), characterized in that it has a recording unit for recording.

(8) The concrete tightening apparatus according to (7) above, characterized by having means for detecting or inputting the position where the vibrator is inserted, and having a recording unit for recording the detected or input position information. firm vibrator.

(9) A display section for displaying information on whether or not the vibrator has been inserted to a specified depth in concrete, information on the vibrating operation time from insertion to withdrawal, and information on the withdrawal speed from the concrete. The concrete compaction vibrator according to any one of the above (1) to (8), characterized in that the vibrator has a

(10) The concrete tightening apparatus according to (9) above, characterized by having means for detecting or inputting the position where the vibrator is inserted, and having a display unit for displaying the detected or input positional information. firm vibrator.

(11) When placing concrete using the concrete compaction vibrator according to any one of (1) to (10) above,
Placement of concrete into which the scanning laser and/or the 3D laser is placed, above the concrete placing area, with a rotating scanning laser and/or a 3D laser that operates toward the placing location. A concrete placement management system characterized by being configured to measure the height of a surface and the transition of the height.

(12) The above ( 11) Concrete placement management system according to.

(13) Concrete casting according to (11) or (12) above, wherein the rotary scanning laser and/or the 3D laser is a visible light laser, or a separate visible light laser is added. facility management system.

(14) Reinforcing bars and concrete compaction vibrators placed in the placing area that interfere with measuring the height of the concrete placing surface and the transition of the height using a rotating scan laser and/or 3D laser The concrete according to any one of the above (11) to (13), characterized in that a measurement obstacle algorithm for removing measurement obstacles such as , a placing hose, and a placing worker from the measurement is set in advance. Concrete management system.

(15) Record and manage one or all of the placement information such as placement start time, placement time, placement amount, placement speed, placement surface height, and placement surface inclination in the recording unit. The concrete placement management system according to any one of the above (11) to (14), characterized in that it is configured to

(16) The concrete placement management system according to any one of the above (11) to (15), characterized in that it is configured to record and manage joint time and overlapping time in a recording unit.

(17) The above (11) to (16), characterized in that the time for arranging the next ready-mixed concrete car is calculated from the amount of concrete to be placed during placing, and the necessary amount of concrete to be placed is managed. A concrete placement management system according to any one of the above.

(18) The concrete placement management system according to any one of (11) to (17) above, characterized in that the placement situation is photographed and recorded in a recording unit.

(19) The concrete placement management system according to any one of (11) to (18) above, characterized in that the position where the compaction vibrator is inserted is detected by a rotating scan laser and/or a 3D laser. .

(20) The above (11) to (18) are characterized in that the position at which the compaction vibrator is inserted is estimated and calculated from the number of times the compaction vibrator has been inserted into the concrete and compacted. Concrete placing management system according to any one of.

(21) One or all of compaction information such as the vibration operation time of the compaction vibrator, information on the position of the vibrator inserted into the concrete, the speed at which the vibrator is pulled out of the concrete, and information on the number of compactions performed. The concrete placement management system according to any one of the above (11) to (20), characterized in that it is configured to display on the display unit.

(22) One or all of compaction information such as the vibration operation time of the compaction vibrator, information on the position of the vibrator inserted into the concrete, the speed at which the vibrator is pulled out of the concrete, and information on the number of compactions performed. is recorded in a recording unit and managed.

According to the invention shown in 1 above, by providing the first sensor and the second sensor, it is possible to confirm whether or not the compaction work of concrete is being properly performed, so that high-quality concrete can be constructed. can do.

In particular, by inserting the compaction vibrator into the placed concrete and detecting not only the insertion depth but also the extraction speed from the concrete, it is possible to eliminate the gaps that occur when the extraction speed is faster than the appropriate speed. occurrence can be prevented. Therefore, since sufficient and appropriate compaction work can be performed, high-quality concrete can be obtained.

According to the invention shown in 2 above, by using two sensors, the first sensor and the second sensor, it is possible to accurately measure the speed at which the vibrator is pulled out of the concrete.

According to the invention shown in 3 above, by providing a plurality of second sensors at predetermined intervals in the longitudinal direction, the distance from the first sensor can be selected by selecting the second sensor to be used. For example, if a plurality of second sensors are arranged at intervals of 100 mm, the distance from the first sensor can be selected and changed in units of 100 mm.
That is, since the distance from the first sensor to the second sensor can be regarded as the insertion depth of the vibrator, any insertion depth can be set and detected.

According to the invention shown in 4 above, since the first sensor and the second sensor are detachable from the vibrator main body, even if one of the sensors is damaged or malfunctions, only this sensor can be replaced. can be done.
In addition, a general compaction vibrator can be used, and the compaction vibrator according to the present invention can be obtained by a simple method of attaching the first sensor and the second sensor to this.

According to the invention shown in 5 above, the sensor member has a sheath-like or cylindrical shape, and can be attached by covering the vibrating portion of the vibrator, which generally has a rod-like or hose-like shape. In other words, the sensor member can be attached to the vibrator by inserting the vibrating portion of the vibrator into the sheath-shaped or cylindrical sensor member.
These configurations allow the sensor member to be attached to the vibrator in a simple manner.

According to the invention shown in 6 above, in the aspect in which the sensor member is attached to the vibrating portion of the vibrator, the sensor member is connected to the sensor in order to transmit the signals detected by the first sensor and the second sensor to the vibrator (especially the control unit, etc.). It is necessary to connect an electric wire to the vibrator side as well, and as this connection method, a connector connection is adopted. By adopting the connector connection, the electrical connection between the vibrator and the sensor member can be made in a simple manner. Moreover, even if the first sensor or the second sensor is damaged or malfunctions, it can be replaced with a sensor member simply by detaching the connector.

According to the invention shown in 7 above, since the operator can know whether or not the vibrator is inserted into the cast concrete and whether or not it is inserted to the specified depth, it is appropriate and effective. compaction work can be performed. Not only the case where the specified depth is not reached, but also the case where the finger is inserted to a position deeper than the specified depth is included in the case of not being inserted to the specified depth.

According to the invention shown in 8 above, when the vibrator is inserted into the concrete that has been cast, it operates when it is inserted to a prescribed depth that is an appropriate depth. , safe and efficient compaction work can be carried out.

According to the invention shown in 9 above, since the operator can know whether the vibrating operation time of the compaction vibrator inserted into the poured concrete is appropriate, the necessary and sufficient compaction work can be performed. can be done.

According to the invention shown in 10 above, when the compaction vibrator is pulled out from the poured concrete after the compaction work is completed, the pullout is performed at an appropriate pullout speed so as not to create a gap in the pulled out portion. be able to. Therefore, since the operator is warned when the drawing speed is not appropriate, even an inexperienced operator can cope with the situation, contributing to technical improvement.

According to the invention shown in 11 above, the configuration for recording various conditions of the compaction work makes it possible to save the quality control status as record data. Therefore, it is possible not only to explain the quality control to the contractor, but also to contribute to the creation of a record database as material for the pouring work, and it can also be used as a reference material for other pouring works.

According to the invention shown in 12 above, it is possible to grasp whether or not there is any omission in the compaction work for the concrete placed in the placing area.

According to the invention shown in 13 above, various conditions of compaction work can be visualized. Therefore, it becomes easy to confirm the compaction work.

According to the invention shown in 14 above, it is possible to visualize in which range the compaction work for the concrete placed in the placing area has been performed. Therefore, it becomes easy to check the progress of the compaction work.

According to the invention shown in 15 above, it is possible to accurately grasp the concrete placement situation, and to provide a highly reliable concrete placement management system.

In particular, it was difficult to accurately grasp the compaction position by the vibrator, but by combining the information on the insertion time from the vibrator and the information on the position of the vibrator by video analysis, the compaction position can be accurately determined. can grasp. With these configurations, it is possible to accurately grasp the compaction position, number of times, order, etc. in the concrete placement range, and it is possible to check whether the concrete compaction work by the vibrator has been properly performed. It is also possible to assess the quality of concrete placement work.
In addition, even after construction, it is possible to prove that the above-mentioned work has been properly performed, and it can be used as a quality certification record of the constructed concrete.

According to the invention shown in 16 above, for each position where the concrete compaction work is performed, in other words, each time the compaction vibrator penetrates the concrete once, the vibrator insertion time, compaction time, insertion The depth and extraction speed are recorded and managed, and it is possible to more reliably confirm whether or not the concrete compaction work by the vibrator has been properly performed. In addition, even after construction, it is possible to prove that the above-mentioned work has been properly performed, and it can be used as a quality certification record of the constructed concrete.

According to the invention shown in 17 above, by plotting the positions where the compaction work was performed on a map (for example, a plan view) representing the concrete placement range, the positions where the work was performed are visually recognized. can be recorded and managed. In addition, by connecting these plots with lines in the order in which compaction was performed, it is possible to visually recognize, record, and manage the trajectory of the work, and to ensure that the concrete compaction work using the vibrator is appropriate. It is possible to more reliably confirm whether or not it has been performed.

According to the invention shown in 18 above, a mark (for example, discriminated by a symbol or a color) representing a pass/fail judgment as to whether or not the concrete compaction work was properly performed is added to the plot written on the map in 17 above. By assigning , it is possible to visually recognize, record and manage the evaluation of the work situation.

According to the invention shown in 19 above, by using the concrete compaction time by the vibrator, the insertion depth of the vibrator, and the withdrawal speed as parameters, the quality of the concrete compaction work can be determined with high accuracy.

According to the invention shown in 20 above, the number of times compaction work is performed is specified in a predetermined area within the concrete placement range, and whether or not the specified number of times has been performed is used as a criterion for judgment, It is possible to judge the quality of concrete compaction work with high accuracy.

According to the invention shown in 21 above, in a situation in which a plurality of compaction vibrators are simultaneously operating in one concrete placement range, compaction By adopting means for identifying the color of the helmet of the worker who operates the vibrator, individual vibrators can be easily and accurately identified.

Next, the effect of the invention related to the present invention will be described.

According to the invention shown in (1) above, it is possible to provide a concrete compaction vibrator capable of performing appropriate compaction and obtaining high-quality concrete.

In particular, by detecting not only the insertion and insertion depth of the compaction vibrator into the cast concrete, but also the extraction speed from the concrete, the generation of voids when the extraction speed is faster than the appropriate speed. can be prevented. Therefore, since sufficient and appropriate compaction work can be performed, high-quality concrete can be obtained.

According to the invention shown in (2) above, the operator can know whether or not the vibrator is inserted into the placed concrete, and whether or not it is inserted to the specified depth. And effective compaction work can be performed. Not only the case where the specified depth is not reached, but also the case where the finger is inserted to a position deeper than the specified depth is included in the case of not being inserted to the specified depth.

According to the invention shown in (3) above, the vibrator operates when it is inserted into the placed concrete to a specified depth, which is an appropriate depth. The arrangement allows for safe and efficient compaction operations.

According to the invention shown in (4) above, the operator can know whether or not the vibrating operation time of the compaction vibrator inserted into the poured concrete is appropriate, so that the necessary and sufficient compaction work can be performed. It can be carried out.

According to the invention shown in the above (5), when the compaction vibrator is pulled out from the placed concrete after the compaction work is completed, it is pulled out at an appropriate pull-out speed so as not to create a gap in the pulled-out portion. can be pulled out. Therefore, since the operator is warned when the drawing speed is not appropriate, even an inexperienced operator can cope with the situation, contributing to technical improvement.

According to the invention shown in (6) above, it is possible to easily determine whether the withdrawal speed of the vibrator is appropriate.

According to the invention shown in (7) above, the configuration for recording various conditions of the compaction work makes it possible to save the quality control status as recorded data. Therefore, it is possible not only to explain the quality control to the contractor, but also to contribute to the creation of a record database as material for the pouring work, and it can also be used as a reference material for other pouring works.

According to the invention shown in (8) above, it is possible to grasp whether or not there is any omission in the compaction work for the concrete placed in the placing area.

According to the invention shown in (9) above, various conditions of compaction work can be visualized. Therefore, it becomes easy to confirm the compaction work.

According to the invention shown in (10) above, it is possible to visualize the extent to which the compaction work for the concrete placed in the placing area has been performed. Therefore, it becomes easy to check the progress of the compaction work.

According to the invention shown in (11) above, it is possible to provide a highly reliable concrete placement management system capable of accurately grasping the concrete placement situation.

In particular, by detecting the height of the placing surface using a rotating scan laser and/or a 3D laser, it is possible to detect a line, unlike the one-point detection by laser scanning, etc. Even if there is an obstacle to the measurement, it is possible to detect not only the plane position but also the inclination and unevenness of the placement surface, so that the measurement can be performed accurately.

According to the invention shown in (12) above, the structure using two or more rotary scan lasers and/or 3D lasers enables planar detection, and thus more accurate measurement.

According to the invention shown in (13) above, since it is possible to visually confirm which position is being scanned, it is possible to easily check whether or not the measurement position is correct and whether or not the instrument is out of alignment. can be done.

According to the invention shown in (14) above, it is possible to perform measurement in a state where conditions that hinder detection are removed, so that more accurate measurement results can be obtained.

According to the invention shown in (15) above, it is possible to save the concrete placement situation as record data. Therefore, it is possible not only to explain the pouring quality control to the contractor, but also to contribute to the creation of a record database as pouring work materials, and it can also be used as a reference material for other pouring works. .

According to the invention shown in (16) above, it is possible to manage joints and piles of concrete, so that it is possible to prevent quality defects such as cold joints from occurring.

According to the invention shown in (17) above, it is possible to grasp and manage the amount of concrete placed over the entire placement area, and it is possible to prevent material loss, etc. in the piping in the concrete pumping pump, and improve efficiency. Concrete placing work can be carried out without significant waste. Therefore, the work manager's load can be reduced.

According to the invention shown in (18) above, the placement situation can be recorded and managed as a video.

According to the invention shown in (19) above, the compaction position by the vibrator can be detected with high accuracy.

According to the invention shown in (20) above, by using the information obtained by estimating and calculating the compaction position by the vibrator, there is no need to rely on detection equipment such as GPS.

According to the invention shown in (21) above, compaction information by the vibrator can be visualized.

According to the invention shown in (22) above, compaction information by the vibrator can be recorded and managed.

Schematic configuration diagram showing one embodiment of a concrete compaction vibrator according to the present invention Schematic explanatory view showing a state in which the concrete compaction vibrator shown in FIG. 1 is inserted into concrete Schematic explanatory view showing a state in which the concrete compaction vibrator shown in FIG. 1 is inserted into concrete to a specified load. Schematic configuration diagram showing one embodiment of a concrete placement management system according to the present invention FIG. 5 is a diagram showing an example of a display example of placement information measured by a rotating scan laser S1 used in the concrete placement management system shown in FIG. FIG. 5 is a diagram showing an example of a display example of placement information measured by a rotating scan laser S2 used in the concrete placement management system shown in FIG. Schematic configuration plan view showing an example of a placement area for explaining the relationship between a measurement obstacle and a 3D laser VIII-VIII schematic configuration sectional view of FIG. VIII-VIII schematic sectional view of FIG. Explanatory diagram showing the measurement of the initial state of the casting area by 3D laser Schematic partial cross-sectional view showing another embodiment of the concrete compaction vibrator according to the present invention (sensor member is separate) AA schematic partial cross-sectional view showing the arrangement location of the first sensor in the sensor member Schematic explanatory drawing which shows one Example of a sensor member Explanatory diagram showing the movement of the vibrator, the signal generated by the sensor, and the graph showing the insertion depth vs. time in the same time series. Schematic explanatory diagram showing an example of the arrangement of cameras, etc. installed in the casting range Schematic diagram showing a map showing the placement range on a plane

Next, the concrete compaction vibrator, which is the first invention of the present invention, will be described in detail with reference to attached FIGS. 1 to 3, and the concrete placement management system, which is the second invention of the present invention, with reference to FIGS. do.

First, a concrete compaction vibrator (in this specification, it may be simply referred to as a “compaction vibrator” or “vibrator”) 1, which is the first invention of the present invention, is a concrete compaction vibrator surrounded by a formwork 4 or the like. A vibrating part 11 is inserted into the concrete 2 placed in the setting area 3, and the placed concrete is compacted by vibrating the vibrating part 11. As shown in FIG. The concrete to be placed is loaded from the ready-mixed concrete factory onto ready-mixed concrete trucks (concrete mixer trucks) and transported to the casting site, where it is poured into the casting area 3 by means of supply such as pumping by concrete pump trucks. It is driven through a setting hose or the like.

As a specific configuration of the vibrator 1 of the present invention, as shown in FIGS. 1 to 3,
In the vibrator 1, the vibrating portion 11 is inserted into the placed concrete 2, and the vibrating portion 11 vibrates to compact the concrete 2,
The vibrator 1 has a sensor 13A for detecting whether or not the vibrating portion 11 is inserted into the concrete 2, and a sensor 13B for detecting whether or not the vibrating portion 11 has been inserted into the concrete 2 to a specified depth. and
Detecting whether or not it is in a state of being inserted into the concrete 2 and whether or not it has been inserted into the concrete 2 to a specified depth,
It is configured to detect the drawing speed of the vibrator 1 from the concrete 2 from the time change of the signals of the two sensors 13A and 13B.

The vibrator 1 includes a vibrating portion 11 that is inserted into the placed concrete 2 and vibrates, and a grip portion 12 that is held by the operator and provided with a switch portion 12A for operation and the like. It has a wiring portion 12B and the like connected to the grip portion 12 and the like, and is connected to the power supply portion 5 via the wiring portion 12B. The configuration of a publicly known public vibrator used for this can be adopted without any particular limitation.

Further, the vibrator 1 is provided with a sensor 13A at least at the tip portion 11A of the vibrating portion 11 and a sensor 13B at the middle portion 11B. A sensor 13B provided in the middle portion 11B detects whether or not the vibrating portion 11 is inserted into the concrete 2 to a specified depth. Furthermore, the pull-out speed of the vibrating portion 11 from the concrete 2 is detected from the time change of the signals detected by these two sensors 13A and 13B. Incidentally, the number of sensors 13A and 13B to be arranged is not limited to the above two, and it is also possible to have a structure capable of detecting insertion depths of three or more stages by providing three or more in the intermediate portion. .

As the sensor 13A for detecting whether or not the vibrating portion 11 is inserted into the concrete 2 and the sensor 13B for detecting whether or not the vibrating portion 11 is inserted into the concrete 2 to a prescribed depth, the concrete 2 It is preferable to use a sensor or the like configured to detect by energizing the moisture or the like inside, and it is possible to adopt a publicly known and used configuration for detecting this type of fluid such as concrete. Detection by the sensors 13A and 13B may be performed by acceleration, a pulse wave meter, or the like, and it is preferable that the pull-out speed of the vibrating portion 11 is calculated using the detected signal (current pulse wave, etc.).

In order to compact the placed concrete 2 using the vibrator 1 , an operator grips the grip portion 12 of the vibrator 1 and inserts the vibrating portion 11 into the placed concrete 2 . By this insertion, a sensor 13A provided at the tip portion 11A of the vibrating portion 11 detects whether or not the vibrating portion 11 is inserted into the concrete 2. First, the state in which the vibrating portion 11 has begun to be inserted into the concrete 2 (see FIG. 2). state) is detected. As the vibrating portion 11 continues to be inserted, the sensor 13B provided in the middle portion 11B detects that the vibrating portion 11 has been inserted to the specified depth in the concrete 2 (the state shown in FIG. 3). This prescribed depth is appropriately determined according to various conditions such as the component/mixture of the concrete 2 to be placed, the required properties/strength, etc., and the midway portion 11B of the vibrating portion 11 is determined according to the determined depth. is also adjusted as appropriate.

After confirming that the tip portion 11A of the vibrating portion 11 of the vibrator 1 or the middle portion 11B has been inserted into the placed concrete 2, the vibrating operation of the vibrating portion 11 is activated to strike. Compaction of the provided concrete 2 is started. The start timing of the vibrating operation of the vibrating portion 11 depends on whether it is when the tip portion 11A of the vibrating portion 11 is inserted or when it is inserted to the middle portion 11B which is the specified depth. It is appropriately determined according to design conditions such as the degree of flow of the concrete 2, construction conditions, and the like.

When the vibrating portion 11 of the vibrator 1 starts to vibrate, the vibrating portion 11 is inserted into the concrete 2 or is inserted into the concrete 2 to a specified depth. 13B detects and informs the operator of the detected information, whereby the operator operates the switch section 12A provided in the grip section 12. As shown in FIG. Examples of notification means for the operator include lighting of a light or liquid crystal display provided in the grip portion 12, display of a display screen installed at the casting site, lighting of a light, and a configuration in which the grip portion 12A vibrates. be able to. Similarly, the operation stop of the vibrating action of the vibrating portion 11 can also be performed by operating the switch portion 12A upon notification to the operator.

In addition, the operation start/stop of the vibrating operation of the vibrating portion 11 of the vibrator 1 is not limited to the configuration performed by the operator operating the switch portion 12A. It is also possible to configure the device to control based on the above. The operation start/stop of this vibration operation is performed by sending detection information to the control unit 6 via the wired wiring unit 12B or wirelessly (Wi-Fi (registered trademark), Bluetooth (registered trademark), etc.). In the embodiment shown in Fig. 1, the control unit 6 is configured separately from the vibrator 1, but the control unit 6 may be built in the vibrator 1. can also

Further, it is preferable that the vibrating operation of the vibrating portion 11 of the vibrator 1 is configured such that the operating time is managed. An appropriate time is stipulated according to the compaction time that is appropriately adjusted according to the design conditions and construction conditions of the placed concrete 2, and based on the information on whether or not this stipulated time has been reached, the work is performed. Alternatively, the control unit 6 may control and stop the vibrating operation of the vibrating unit 11 based on the information that the specified time has passed. You can also

A sensor 13A disposed at the tip portion 11A of the vibrating portion 11 not only detects that the vibrating portion 11 has been inserted into the concrete 2, but also removes the vibrating portion 11 from the concrete 2 after sufficient compaction has been performed. It also detects that the vibrating part 11 is completely pulled out of the concrete 2 at the time of pulling out. Similarly, the sensor 13B disposed in the middle portion 11B of the vibrating portion 11 not only detects that the vibrating portion 11 has been inserted to a specified depth in the concrete 2, but also detects the insertion of the vibrating portion 11 during compaction. It also detects when the depth deviates from the specified depth (shallower than specified, deeper than specified) and when the vibrating part 11 is pulled out of the concrete 2 to the extent that it escapes from the specified depth.

A preferable speed for pulling out the vibrating portion 11 of the vibrator 1 from the concrete 2 is appropriately determined according to design conditions such as the degree of flow of the concrete 2, construction conditions, and the like. Voids are generated in the part, air is accumulated, and concrete failure is caused. If the speed is lower than the specified speed, the concrete around the vibrating portion 11 is excessively vibrated, which may cause the separation of the mixed components of the concrete, resulting in defective concrete.

In addition, by informing the worker whether the drawing speed from the concrete 2 is within a specified range, the worker can be urged to keep it within an appropriate range. Examples of notification means for the operator include lighting of a light or liquid crystal display provided in the grip portion 12, display screen/display light provided at the casting site, and a configuration in which the grip portion 12A vibrates. .

It is preferable that one or all of the detection information relating to compaction described above is recorded in the recording unit 7 so that it can be referred to as data. A computer terminal or the like can be used as the recording unit 7 . In the present embodiment shown in FIG. 1, the recording section 7 is configured separately from the vibrator 1, but the recording section 7 can be built in the vibrator 1 as well.

It is also preferable that one or all of the above-described detection information relating to compaction is displayed on the display unit 8 so that it can be confirmed. Examples of the display unit 8 include a display 8A such as a computer terminal, and a mobile terminal 8B such as a tablet terminal and a smartphone. Although the display unit 8 is configured separately from the vibrator 1 in the embodiment shown in FIG.

In the compaction work of the placed concrete 2 by the vibrator 1 of the present invention having the above configuration, the position where the vibration part 11 of the vibrator 1 is inserted in the placing area 3 is recorded in the recording part 7 as position information. , displayed on the display unit 8, and the like. Such positional information includes, for example, an estimated value calculated from the number of times the vibrating portion 11 is inserted into the concrete 2 at appropriate intervals, a GPS positional information value provided in the vibrator 1, and a configuration using wireless communication. Wi-Fi (registered trademark) / Bluetooth (registered trademark) position information value in the case, position information value visually confirmed by workers and construction managers, or position detection of one or more arranged at the casting site A positional information value detected by a sensor (rotating scan laser, 3D laser, etc.) can be used.

In addition, since the above-mentioned compaction work is repeated multiple times in the placing area 3, it is preferable that each detection information and position information are recorded, managed, and displayed each time. Furthermore, since the compaction work may be performed by a plurality of workers when the placing area 3 is wide, etc., each detection information and position information is provided for each worker and each vibrator 1, 1 . . . It is preferable that the information is recorded, managed, and displayed.

Concrete that is compacted using the concrete compaction vibrator of the first invention described above is managed by using the concrete placement management system of the second invention of the present invention, which will be described in detail below. be.

As a specific configuration of the concrete placement management system, which is the second invention of the present invention, as shown in FIGS. Rotating scanning lasers or 3D lasers S1 and S2 are arranged to operate toward and measure the height of the placing surface of the concrete 2 on which the scanning lasers or 3D lasers S1 and S2 are placed.

In FIG. 4, concrete 2A is the first layer of concrete 2 that is placed first in the placing area 3, and concrete 2B is the second layer of concrete that is placed on top of the first layer of concrete 2A. It is concrete 2, and this second layer of concrete 2 shows a state in the middle of being placed. , Depending on the design conditions, there are cases where the third layer, the fourth layer, . The concrete 2 to be cast in this embodiment is transported from the ready-mixed concrete factory 9A to the site by a concrete mixer truck 9B, and then poured into the casting area 3 via a casting hose or the like by a concrete pump truck 9C. be. Incidentally, the height (lift) of each successive placement is appropriately determined according to the design conditions and the like, but in the present embodiment, it is about 50 cm, which is the case of ordinary concrete.

Further, in FIG. 4, symbol h1 indicates the measured distance from the rotating scanning laser or 3D laser S1 to the upper surface (placement surface) of the second layer of concrete 2B immediately below S1, and symbol h2 indicates the rotating scanning laser or Indicates the distance measured from the 3D laser S2 to the upper surface (placement surface) of the second layer concrete 2B immediately below the S2, and the reference numeral 0 is the mounting portion 31 to which the rotary scan laser or the 3D laser S1/S2 is mounted. to the bottom of the casting zone 3. As the placement of the concrete 2 progresses and the placement surface rises, the angle of irradiation from the rotary scan laser or the 3D laser S1/S2 becomes smaller and the laser response disappears, making normal measurement difficult. It is necessary to move the position as high as appropriate.

5 and 6 are diagrams (graphs) showing examples of display examples of placement information measured by the rotary scan laser or the 3D laser S1 and S2, respectively. Measured by, H0-h2 is measured by S2), the amount of concrete placed, the time of joint placement, the time of pouring, etc. are displayed on the display unit (for example, display 8A such as a computer terminal shown in FIG. It is preferable to perform the work while displaying it on the mobile terminal 8B or the like and confirming it appropriately.

The rotary scan lasers or 3D lasers S1 and S2 are arranged in a fixed state on mounting portions 31 such as forms and beams provided above the casting area 3. The rotary scan lasers or 3D lasers are It is preferable to arrange two or more.

When two or more rotary scan lasers or 3D lasers are arranged, the detection ranges of adjacent rotary scan lasers or 3D lasers (S1 and S2 in FIG. 4) are arranged so that they partially overlap, thereby eliminating omissions. Detection measurement becomes possible.

By arranging two or more rotating scanning lasers or 3D lasers, each rotating scanning laser or 3D laser S1, S2, etc. detects and measures the tilted state of the placing surface that occurs when pouring ready-mixed concrete in a fluid state. Therefore, in the casting area 3, it is possible to detect and measure without omission the state of the inclination of the casting surface that descends from the area close to the ready-mixed concrete pumping port (for example, the pouring hose port, etc.) toward the far area. It becomes possible.

The number of rotary scan lasers or 3D lasers to be arranged is not limited to two (S1 and S2) in this embodiment, and may be determined according to the detection performance of the rotary scan lasers or 3D lasers to be used and the size of the placement area to be applied. may be one, or may be three or more.

As the rotary scanning laser/3D laser used in the present invention, a known public laser capable of detecting a wide area of a linear or planar detection range instead of a point-like spot detection can be used, preferably a visible light laser. is to use Incidentally, the visible light laser may be added with a separate structure. By using a visible light laser, it is possible to visually confirm which position is being scanned, so it is possible to easily check whether the measurement position is correct and whether there is any deviation of the instrument.

As a rotary scan laser preferably used in the present invention, for example, laser range sensor UST-10LX manufactured by Hokuyo Denki Co., Ltd., which is a 2D laser having a rotary function, can be cited.
As a 3D laser preferably used in the present invention, for example, a laser range sensor YVT-35LX manufactured by Hokuyo Denki Co., Ltd. can be cited.
Further, as a separately configured visible light laser, line laser LML-D12-515-5 manufactured by FM Lasertec Co., Ltd. can be cited.

By detecting the height of the placement surface of the second layer of concrete 2B by rotating scan lasers or 3D lasers S1 and S2, it is possible to determine whether or not the placement area 3 has been placed to the height of the design conditions over the entire area. From this measured value, if it is determined that the second layer is still being placed, the amount of concrete required for the remaining concrete placement and the placement time can be calculated. Further, when it is determined that the placement of the second layer has been completed, the joint placement time and the overlapping placement time until the placement of the next layer, the third layer, is started, or the concrete placement of the third layer is calculated. It is possible to calculate and arrange the amount of concrete necessary for construction.

When measuring with a rotating scan laser or 3D laser S1 and S2, the formwork 4, which is the placement area 3, is adjusted so that the measurement results of the height of the concrete 2 placement surface and the change in the height are accurate values. It is preferable to have a configuration that recognizes the inner surface, and furthermore, the reinforcing bars (width retaining bars, etc.), separators, placing workers/compaction workers, etc. It is preferable to have a preset measurement obstacle algorithm for removing measurement obstacles such as placement hoses and compaction vibrators from the measurement. With such a configuration, it is possible to perform measurement in a state in which conditions that hinder detection are removed, so that more accurate measurement results can be obtained. In addition to the measurement obstacles described above, this measurement obstacle algorithm includes a rotating scanning laser, a 3D laser and reinforcing bars caused by vibrations that occur during placement, vibration of the separator, a rotating scanning laser that occurs at each construction stage, It is preferable to incorporate the effects of detection, such as work restrictions due to movement of the mounting position of the 3D laser, handling of the placement hose, etc., into the conditions.

Next, based on FIGS. 7 to 10, configuration examples of measurement obstacle algorithms that are preferably applied in the concrete placement management system of the present invention will be described.

7 to 9 are schematic configuration diagrams showing an example of the placing area 3 where concrete is placed. In the placing area 3 surrounded by the formwork 4, reinforcing bars 32 are arranged. Concrete 2 is cast in a casting area 3, and compaction of the cast concrete 2 is performed by a concrete compaction vibrator 1.

In the above-described concrete placement, the height of the placement surface of the placed concrete 2 and the transition of the height are measured by 3D lasers S3 and S4 arranged above the placement area 3. FIG. In this configuration example, the laser range sensor YVT-35LX manufactured by Hokuyo Denki Co., Ltd. is used as the 3D laser.

In this configuration example, the measurement range of each of the 3D lasers S3 and S4 is a downward fan-shaped range of 210 degrees in the longitudinal direction of the placing area 3 (horizontal direction on the drawings of FIGS. 7 and 8). In addition, the range is 40 degrees in the depth direction of the placing area 3 (the vertical direction on the drawing of FIG. 7 and the horizontal direction on the drawing of FIG. 9). The 3D laser S3 and the 3D laser S4 are arranged so that their measuring ranges overlap each other in the longitudinal direction. 7 to 9, the range surrounded by one-dot chain lines indicates the measurement range of the 3D laser S3, and the range surrounded by two-dot chain lines indicates the measurement range of the 3D laser S4.

When measuring the placement height of the concrete 2 placed in the placement area 3 and the transition of the height with the above configuration, the reinforcing bars 32 and the compaction vibrator 1 interfere with the measurement. In this configuration example, the reinforcing bar 32 and the compaction vibrator 1 are assumed to be measurement obstacles for the sake of simplicity, and other measurement obstacles such as the placement hose, the placement worker, and the compaction worker are omitted. do. The illustration of the upper surface of the placed concrete 2 is also omitted.

(1) Setting the initial state and setting the placement height to zero Before starting concrete placement and measurement, first, the initial state is measured and the placement height is set to zero. This initial state means that the position of the bottom surface of the placing area 3, the position of the reinforcing bar 32, the position of the inner surface of the formwork 4 surrounding the placing area 3, and the like do not move from the initial state. In addition to the compaction vibrator 1, measurement obstacles that move from the initial state include a placement hose, a placement worker, a compaction worker, and the like, which are omitted in this configuration example.
Measured values other than the placement height are determined to be measurement obstacles, and the obstacle coordinates and data No. (scan No.=angle) are recorded.
Furthermore, considering the error in the height of the initial placement surface (unevenness, the error of the 3D laser itself, etc.), a threshold range (preferably about 1 to 2 cm) is set. The component distance is determined as a measurement obstacle.
FIG. 10 is an explanatory diagram showing the initial state of measurement before concrete is placed using a 3D laser. ” indicates the position of the inner surface of the formwork 4, which is the side surface in the placing area 3, and “●” and “● measurement obstruction” indicate measurement specifications such as the reinforcing bar 32. As shown in FIG. Note that "x" and "x virtual image data" indicate virtual image data appearing in the vicinity of the shadow of the measurement obstruction (on the rear side when viewed from the 3D lasers S3 and S4).

(2) After the start of concrete placing After the start of concrete placing, the compaction vibrator 1 (or the abbreviated placing hose) is determined to be a vertical measuring obstacle in the above-described initial state.
In particular, it is preferable that the compaction vibrator 1 is recorded in its position and height from the information for detecting the state of being inserted into the concrete 2 described above, and is determined as an obstruction to measurement.
By placing the concrete 2, the height of the placing surface is measured. The measured value of the placing surface is a value that is continuous two-dimensionally and is continuous over time. The portion of the measurement obstruction becomes a peculiar value.
It is preferable to record the relationship between the height of the casting surface and time (casting speed, overlapping time management, etc.) by using the adjacent average value of measured data, etc., and the shape, inclination, and These conditions can be grasped by displaying unevenness or the like.

(3) Start of concrete placement When the concrete placement surface rises As the concrete placement progresses and the height of the concrete placement surface rises, the portion of the reinforcing bar 32 that is buried in the concrete is excluded from the measurement obstacle determination coordinates. .

(4) Dealing with misalignment of 3D lasers S3 and S4 (error, virtual image data processing)
When measuring with the 3D lasers S3 and S4, it is conceivable that a slight error such as deviation of the laser beam may occur due to vibration of the compaction vibrator 1 or the like. Error judgment is excluded based on the information at the time of the measurement obstacle judgment in the initial state.
In addition, when a large deviation occurs due to contact during work, etc., re-initial value setting (replacement) determination is performed, and measurement obstacles are re-determined. At this time, since the height of the concrete-placed surface does not change suddenly, the placement height at the time of replacement is estimated and set as the initial value at the time of resetting from the placement height time change before resetting.
This re-initialization (replacement) is also performed when the placement positions of the 3D lasers S3 and S4 are changed to higher positions when the irradiation angles of the 3D lasers S3 and S4 become smaller as the placement progresses. If the 3D lasers S3 and S4 are previously arranged at positions that do not need to be changed, re-initialization (replacement) becomes unnecessary.
Among the measured values obtained by the above measurements, the measured values of the measurement obstacles are excluded, and the virtual image values generated in the vicinity of the determination position of the measurement obstacles are also excluded because they are considered to be interference.

As described above, by setting the measurement obstacle algorithm in advance at the time of measurement, it is possible to perform measurement in a state where conditions that hinder detection are removed, so that more accurate measurement results can be obtained. can

In the above description of the measurement obstacle algorithm, a configuration example using a 3D laser was described, but the measurement obstacle algorithm can also be applied to a configuration example using a rotating laser, which is a 2D laser having a rotating function.

In the case of a 2D laser, for example, when the above-mentioned laser range sensor UST-10LX manufactured by Hokuyo Electric Co., Ltd. is adopted, the downward fan-shaped measurement range is about 270 degrees, and the placement area 3 located within this range measurement becomes possible. Then, for the measurement of the same point, for example, by disposing two 2D lasers at the same position in the longitudinal direction but at different positions in the height and depth directions, the same three-dimensional measurement as the 3D laser can be performed. measurement becomes possible.

Various concrete placement information when concrete is placed, namely, placement start time, placement time, placement amount, placement speed, placement surface height, placement surface inclination, and moreover multiple layers of concrete placement information. In this case, one or all of the placement information and placement information such as placement information for each layer, joint time/overlay time, required amount of concrete, time for preparing ready-mixed concrete trucks, etc. is stored in a recording unit such as a computer terminal ( For example, it is preferable to record and manage them in the recording unit 7 shown in FIG. According to this configuration, it is possible not only to explain the quality control of casting to the contractor, but also to contribute to the creation of a record database as a material for casting work, and to use it as a reference material for other casting work. can do.

Further, in the concrete placement management system of the present invention, it is preferable that the concrete placement situation is photographed and recorded in the recording section in the same manner as the placement information recording section described above.

Furthermore, in the concrete placement management system of the present invention, not only the placement information but also the vibrating operation time of the compaction vibrator, information on the position of the vibrator inserted into the concrete, the speed at which the vibrator is pulled out of the concrete, and compaction are performed. One or all of the compaction information, such as information on the number of times of compaction, may be displayed on the display unit, or may be recorded on the recording unit and managed. According to this configuration, it is possible to record and manage information relating to concrete placing and compaction, or to display and confirm the information. In the case of a configuration that records, manages, and displays information on both concrete placement and compaction, detection and measurement using a rotating scan laser and 3D laser can detect and measure the position of the compaction vibrator in addition to the height of the placement surface. It is preferable to set it as the structure which carries out.

As a preferable 3D laser for detecting and measuring the compaction vibrator 1, the laser range sensor YVT-35LX manufactured by Hokuyo Denki Co., Ltd. mentioned above can be mentioned. It is easy to identify the insertion position of the vibrating portion 11 into the concrete 2 .

In addition, the detection and measurement of the insertion position of this compaction vibrator 1 is performed by the configuration in which the two 2D lasers described above are arranged, that is, the same position in the longitudinal direction, but two different positions in the height and depth directions. By arranging a 2D laser on a stand, it is also possible to perform stereoscopic measurement similar to that of a 3D laser. As a preferable 2D laser for detecting and measuring the compaction vibrator 1, the aforementioned laser range sensor UST-10LX manufactured by Hokuyo Denki Co., Ltd. can be mentioned.

The concrete compaction vibrator and concrete placement management system according to the present invention described above can be used not only for placing concrete for buildings and other structures, but also for all types of concrete placement including structures such as bridges and lining concrete (centre). It can be applied to the setting, and is effective especially when performing overlapping strikes.

Next, another embodiment of the vibrator 1 according to the present invention will be described. Since the basic configuration of the other embodiment described here is common to the basic configuration of the vibrator 1 described above, the description thereof will be omitted, and only the different components will be described.

FIG. 11 is a partial cross-sectional view showing another embodiment of the vibrator 1 according to the invention. Only the vicinity of the vibrating portion 11 of the vibrator 1 is shown, and unlike FIG.

In the embodiment shown in FIG. 11, a vibrating portion 11 of the vibrator 1 is attached with a sensor member 15 which is a separate member from the main body of the vibrator 1 . However, there is no change in the role of the sensor attached directly to the vibrator 1 and the sensor in the sensor member 15 configured as a separate member. , have at least the same function as the sensors 13A and 13B described above.

The sensor member 15 is provided with a first sensor 15A and a second sensor 15B, each sensor is connected to an electric wire 15C, and a signal from each sensor is transmitted to the control unit 6 of the vibrator 1, etc. It is a configuration that

The first sensor 15A corresponds to the sensor 13A in FIG. 1 and the like, and is a sensor that detects whether or not the vibrating portion 11 of the vibrator 1 is inserted into the concrete 2 at the tip portion 11A of the vibrating portion 11. .

The second sensor 15B corresponds to the sensor 13B in FIG. 1 and the like, and detects the depth to which the vibrating portion 11 of the vibrator 1 is inserted into the concrete 2 at the intermediate portion 11B of the vibrating portion 11 or the hose portion 14, in other words, For example, it is a sensor that detects whether or not the vibrating portion 11 has been inserted into the concrete 2 to a specified depth.

As shown in FIG. 11, it is preferable that a plurality of second sensors 15B be provided at predetermined intervals in the longitudinal direction. For example, if the second sensors 15B are arranged at intervals of 100 mm, the insertion depth of the vibrating portion 11 can be detected at intervals of 100 mm, and the specified insertion depth can be selected at intervals of 100 mm.

For example, in casting concrete for floor slabs, the standard height is often 500 to 600 mm for one casting, so the distance from the first sensor 15A to the farthest second sensor 15B is 500 mm or 600 mm. , and the second sensors 15B arranged therebetween are preferably arranged at intervals of 100 mm. By adopting this configuration, even when the thickness of the floor slab is 500 mm or less, it is possible to set predetermined depths at intervals of 100 mm.

Also, in placing concrete for a wall, one lift of about 500 mm is often used as a unit. In order to cope with such construction, the distance from the first sensor 15A to the farthest second sensor 15B should be 700 mm or 800 m or more, and the second sensors 15B should be arranged at intervals of 100 mm. For example, even if the height of one lift is low, the depth can be set at intervals of 100 mm.

Furthermore, in the case of jointing, the vibrator 1 may be inserted to the previously placed concrete layer. An additional 100 mm or more is preferred.
By adopting such a configuration, it is possible to cope with construction work in which the height of one placement (one lift) is not standard but exceptional.

Two or more sensor elements of the first sensor 15A and the second sensor 15B can be provided close to each other. This means that two or more sensor elements can be provided for one sensor installation position, that is, positions with the same or very close insertion depths. As a result, even if one sensor element fails in detection due to failure, damage, adhesion of dirt, etc., it can be detected by other sensor elements, and adverse effects due to failure of sensor elements, etc. can be prevented. can.

FIG. 12 is a partial end view showing only the sensor member 15 taken along the line AA in FIG. 11. FIG. In FIG. 12, four first sensors 15A are arranged in the circumferential direction with the same insertion depth. With this configuration, even if one of the four sensor elements fails, the other three sensor elements can transmit signals. Although four sensor elements are arranged at the same insertion depth in FIG. 12, it is sufficient if two or more are installed.
FIG. 12 shows the first sensor 15A, but in the second sensor 15B as well, two or more sensor elements can be arranged in the circumferential direction at the same insertion depth.

15 C of electric wires are cables which are connected to the 1st sensor 15A and the 2nd sensor 15B, and transmit a signal to the control part 6 grade|etc., of the vibrator 1. FIG. A connector 15D is provided at the end of the electric wire 15C, and it is preferable that the connector 15D can be easily attached to and detached from the connector similarly provided on the vibrator 1 main body side. By adopting a configuration in which connection is made by the connector 15D, for example, even if the first sensor 15A or the second sensor 15B is damaged or malfunctions, it can be replaced with the sensor member 15 simply by detaching the connector 15D. 1 The main body does not require repair or the like.
As for the electric wire 15C and the connector 15D, known and public electric wires and connectors used in this type of field can be adopted without any particular limitation.

Also, a wireless communication element can be used instead of the connector 15D. That is, the signal obtained from the sensor member 15 can be wirelessly transmitted to the main body of the vibrator 1 . Therefore, a wireless transmitter can be installed on the member corresponding to the connector 15D. There is no limitation on the wireless communication device to be used, and known and public wireless communication devices can be adopted without any particular limitation.

The sensor member 15 is based on a cover portion 15E that is formed in the shape of a sheath or in the shape of a cylinder.
The cover portion 15E is a member that covers the vibration portion 11 of the vibrator 1 or the hose portion 14 connected thereto. In other words, the vibrating portion 11 and the like are fixed so as to be inserted into the cover portion 15E, and the sensor member 15 is attached to the vibrating portion 11. As shown in FIG.

As shown in FIG. 11 , the cover portion 15E preferably has a bottomed cylindrical shape like a sheath, and preferably has a shape and size that match the outer diameter of the vibrating portion 11 . In the present application, this shape is referred to as a sheath shape, but it can also be referred to as a sack shape or the like.
Moreover, although not shown, the cover portion 15E may have a tubular shape capable of covering the vibrating portion 11 .

The size of the cover part 15 is not limited, but considering the distance between the sensors described above and the length and diameter of the vibrating part of a general vibrator, the length should be 300 to 500 mm and the diameter should be 40 to 50 mm. can be exemplified. Moreover, the thickness of the cover portion 15 is preferably as thin as 1 to 2 mm.

It is preferable that the cover portion 15E be formed of a material having elasticity. For example, a rubber-based synthetic resin can be used. This is to prevent the cover portion 15 from falling off from the vibrating portion 11 by fitting it to the vibrating portion 11 of the vibrator 1 for use.
In addition, considering that the cover portion 15E will be inserted into the concrete 2, alkali resistance, water resistance, abrasion resistance, impact resistance, adhesion resistance (property that does not easily adhere to ready-mixed concrete), etc. It preferably has insulating properties, heat resistance, and the like, more preferably.

The material of the cover part 15E is not limited, and any publicly known and used material having some degree of alkali resistance, water resistance, abrasion resistance, impact resistance, adhesion resistance, insulation, heat resistance, etc. may be adopted without any particular restrictions. can be done. For example, Teflon (registered trademark) resin can be used.

As shown in FIGS. 11 and 13, the first sensor 15A, the second sensor 15B, and the electric wire 15C are attached to the cover portion 15E, and these members are preferably embedded in the cover portion 15E. By being embedded in the cover portion 15E, the first sensor 15A and the like are coated on the cover portion 15E, and can enjoy the characteristics of the cover portion 15E such as alkali resistance, water resistance, wear resistance, and the like.

The cover portion 15E can be made of two or more materials.
As shown in FIG. 13, it is preferable to form the periphery of the first sensor 15A, the second sensor 15B, and the electric wire 15C embedded in the cover portion 15E with a hard material (portions formed with a hard material are , “hard portion 15F”). Since the first sensor 15A, the second sensor 15B, and the electric wire 15C may be damaged or damaged by being subjected to an impact or the like, it is possible to improve the impact resistance by forming the relevant portions with a hard synthetic resin or the like. preferable.
In addition, for example, the first sensor 15A, the second sensor 15B, and the electric wire 15C are installed on the surface of the cover portion 15E formed of a material having elasticity, and a hard synthetic resin or the like is coated from above. can do.

As shown in FIG. 11 , when the sensor member 15 is longer than the vibrating portion 11 , the sensor member 15 may reach the hose portion 14 connected to the vibrating portion 11 . In general concrete compaction vibrators, the diameter of the hose portion is smaller than that of the vibrating portion. cause. In this case, it is preferable to provide an adapter 15G between the sensor member 15 and the hose member 14 to fill the gap. Although the shape and material of the adapter 15G are not limited, it is preferably cylindrical.

Next, a method for calculating the drawing speed will be described.
The withdrawal speed is the speed at which the vibrator 1 inserted into the concrete 2 is withdrawn from the concrete 2 . The withdrawal speed can be calculated from the time change of the signals of the first sensor 15A and the second sensor 15B.

Specifically, in a state in which both the first sensor 15A and the second sensor 15B are inserted into the concrete 2, the first sensor 15A is pulled out of the concrete 2 from the time when it is detected that the second sensor 15B has been pulled out of the concrete 2. It is the speed (withdrawal speed V) at which the vibrator 1 is pulled up from the concrete 2 in the time T (seconds) until the time when it is detected. If the distance between the first sensor 15A and the second sensor 15B is expressed as L (mm), the drawing speed V can be expressed by the following formula. The distance L is the depth of insertion of the vibrator 1 into the concrete 2 .
Drawing speed V = L/T (mm/sec)

The vibrator 1 is configured to be able to detect the drawing speed V, so that it is possible to prevent the occurrence of voids that occur when the drawing speed is faster than the proper speed.

It should be noted that the above-described method of calculating the withdrawal speed V and the configuration in which a plurality of the second sensors 15B are provided at predetermined intervals in the longitudinal direction are the same as those of the embodiment shown in FIG. Possible configuration), it can also be adopted in an embodiment in which the sensors 13A and 13B are directly arranged in the vibrating section 11 as shown in FIG.

FIG. 14 shows the position of the vibrator 1 during concrete placement, the signals output by the first sensor 15A and the second sensor 15B, and the graph of the insertion depth of the vibrator 1 in chronological order. .
Here, the distance from the first sensor 15A to the second sensor 15B in the vibrator 1 is defined as the insertion depth L. As shown in FIG.

In FIG. 14, the first vibrator 1 from the left is in a state immediately after the first sensor 15A is inserted into the concrete 2. As shown in FIG. In this state, a signal is output from the first sensor 15A, and this signal continues to be output as long as the inserted state continues. In this embodiment, the output of the first sensor 15A is 5V, and the output is 0 (0V) when it is inserted into concrete and is not properly placed (the same applies to the second sensor 15B).
This state is a state in which the vibrator 1 has started to be inserted into the concrete 2, and this time is t1. That is, the insertion start time is t1.

Next, the second vibrator 1 from the left is in a state immediately after the second sensor 15B is inserted into the concrete 2. FIG. In this state, a signal is output from the second sensor 15B, and this signal continues to be output as long as the inserted state continues.
This state is a state in which the insertion of the vibrator 1 into the concrete 2 reaches a prescribed depth, and this time is t2.

Next, the third vibrator 1 from the left is in a state immediately after the second sensor 15B is pulled out of the concrete 2. FIG. In this state, the signal output from the second sensor 15B is stopped (the output becomes 0).
This state is a state in which the depth of insertion of the vibrator 1 into the concrete 2 deviates from the specified depth, and this time is t3. The time t3 can also be said to be the time when the withdrawal of the vibrator 1 is started.

Here, the time from the time t2 when the vibrator 1 is inserted into the concrete 2 to the specified depth to the time t3 when the insertion depth deviates from the specified depth is the time when the vibrator 1 reaches the specified depth. is the time during which the compaction work was performed, in other words, the time during which the vibrator 1 was held at the specified insertion depth.

Finally, the fourth vibrator 1 from the left is in a state immediately after the first sensor 15A is pulled out of the concrete 2. FIG. In this state, the signal output from the first sensor 15A is stopped (the output becomes 0).
This state is a state in which the vibrator 1 is pulled out of the concrete 2, and this time is t4. The time t4 can also be said to be the time when one compaction operation by the vibrator 1 is completed.

Here, the time T from time t3 when the vibrator 1 started to be pulled out to time t4 when the vibrator 1 was pulled out of the concrete 2 is the time required for the vibrator 1 to be pulled out of the concrete 2 .
That is, the slope from t3 to t4 is the drawing speed V in the graph shown in the lower part of FIG.

Next, another embodiment of the concrete placement management system according to the present invention will be described.
Since the other embodiments described here have many configurations in common with the configuration of the placement management system described above, only different configurations will be described.

Another embodiment of the placement management system described here is characterized by adopting image analysis as means for grasping the position where compaction work by the vibrator 1 is performed.

That is, the camera C captures the concrete 2 placement range, and the camera C analyzes the captured image to specify the position of the worker E who operates the compaction vibrator 1 . If the position of the worker E at the time when the compaction vibrator 1 is inserted into the concrete 2 is specified by image analysis, the positional information of the compaction of the concrete 2 can be accurately grasped.

FIG. 15 is a schematic diagram showing the placement range of concrete.
In the embodiment shown in FIG. 15, a camera C and a reference point marker M are installed near the concrete placing area 3, and a worker E holding a vibrator 1 and wearing a helmet H performs the work. there is

The camera C is photography equipment for photographing the casting area 3 . The captured video is transmitted to a computer or the like, and video analysis is performed. It should be noted that the images here include still images and moving images.
It is preferable that two or more cameras C are installed for one casting area. Due to the construction hose of the pump car, overlapping of the worker E, etc., the necessary image may be disturbed. Therefore, it is effective to install two or more cameras C at different locations to eliminate locations that cannot be photographed.

It is preferable to install a reference marker M in the casting area 3 in order to accurately grasp the position (grasp the coordinates) in image analysis. For example, by setting markers M representing positions (coordinates) at the four corners of the casting area, the position of the worker E recorded in the video of the casting area 3 can be accurately grasped during video analysis. can do.

In a situation where a plurality of compaction vibrators 1 are operating at the same time in one concrete placing area 3, that is, when there are a plurality of workers E performing compaction with the vibrators 1, the helmets H of these workers E It is possible to specify an arbitrary compaction vibrator 1 among a plurality of compaction vibrators 1 by identifying the color of . Therefore, it is preferable that the worker E wears helmets H of different colors while working.
In addition to the means for identifying by the color of the helmet M, means for displaying numbers (numbers) or symbols that can be distinguished from images on the helmet M and identifying them by image analysis can be used.

For example, when obtaining the work trajectory of a worker E1 wearing a yellow helmet H, the time (insertion time, withdrawal time, etc.) at which the compaction work to the concrete 2 was performed from the vibrator 1a possessed by this worker E1 ) is sent to a computer for video analysis and to a medium accessible by this computer. A computer that performs video analysis specifies the position where the worker E1 was at the time when the compaction work was performed by the vibrator 1a of the worker E1 by video analysis. In other words, it is means for synchronizing the compaction work transmitted from the vibrator 1 and the information obtained by video analysis by time. By repeating this image analysis work every time the compaction is performed, it is possible to grasp the trajectory of the work performed by the worker E1.
If these operations are performed for all workers, it is possible to grasp the trajectory of compaction work in the entire casting area.

There is no limitation on the camera C for capturing images, and any publicly known camera for capturing images can be employed without any particular restrictions.
Further, there is no limitation on the specific means of image analysis by computer, and known and public image analysis means can be employed without any particular restrictions. This video analysis includes video analysis means capable of tracking a moving object.

As shown in FIG. 16, the positional information obtained by image analysis at which the concrete compaction work was performed is displayed on a map (for example, a plan view) representing the concrete placement range (placement area). It is preferable to plot the compaction positions individually and connect the plots P with a line L1 in the order of the vibrator insertion time to display the trajectory of the compaction positions. With this display method, it is possible to visually recognize, record, and manage the position where the work was performed. In addition, by connecting these plots P with a line L1 in the order in which the compaction was performed, the trajectory of the work can be visually recognized, recorded and managed, and the concrete compaction by the vibrator 1 can be performed. It is possible to more reliably confirm whether or not the work has been properly performed.

Furthermore, it is preferable to display the quality of concrete compaction by giving each plot P a predetermined mark.
The quality of concrete compaction is a judgment as to whether or not the compaction work was properly performed, and this judgment can be displayed by symbols and colors. For example, in the case of a “good” judgment, the symbol is “○” and the color is “red”, etc., and in the case of a “fail” or “defective” judgment, the symbol is “×” and the color is “blue”. can be displayed. The example shown in FIG. 16 is an example in which the judgment of "good" is indicated by "◯" and the judgment of "poor" is indicated by "x". This makes it possible to visually recognize, record and manage the evaluation of the work situation.

The quality of concrete compaction is preferably judged based on the compaction time of the vibrator 1, the insertion depth of the vibrator 1, and the withdrawal speed. Furthermore, it is preferable that predetermined values are set for the compaction time of the concrete by the vibrator 1, the insertion depth of the vibrator 1, and the withdrawal speed, and whether the concrete compaction is good or bad is judged depending on whether or not these respective values are satisfied. .

In addition, as another judgment of the quality of concrete compaction, in a predetermined area within the concrete placement range, the number of times compaction work is performed is specified. It is also possible to adopt a means for judging whether the quality is good or bad.
By adopting these judging means, it is possible to easily and accurately judge whether the compaction work of concrete is good or bad.

In the video analysis described above, in addition to grasping the position of the vibrator 1, the status of concrete placement, that is, to what extent within the casting range 3 the concrete is being placed is grasped for each time. is preferred. In FIG. 15, the line denoted by L2 is a line representing the boundary of the range where concrete is placed, and is the boundary line on the bottom surface of the placing surface. In FIG. 15, the left side of the boundary line L2 is where concrete has been placed, and the right side is where no concrete has been placed.
The boundary line L2 described above is preferably displayed together with the plot P and the line L1 representing the trajectory in the map showing the concrete placing range shown in FIG.

Furthermore, in the video analysis described above, it is preferable to analyze and grasp the shape of the placing surface, such as the height and range of the placing surface and the presence or absence of unevenness. Further, it is preferable to be able to grasp the shape of the placement surface at which position in the placement area by image analysis.
By being able to grasp the shape and position of the casting surface, for example, it is possible to be outside the formwork when removing air bubbles from the concrete that has been placed by vibrating the formwork (work to reduce pockmarks). Since the worker can grasp the shape of the concrete in the formwork and the surface to be placed, he can accurately grasp the position of the formwork to be struck, and the work efficiency can be significantly improved.

In particular, in an environment where it is not possible to see inside the formwork, it is difficult to grasp the position of the casting surface and the shape of the concrete inside the formwork. It is highly significant if possible. The environment in which the state inside the formwork cannot be observed is an environment in which the walls of the lower floor and the floor slab of the upper floor are cast at the same time. When placing only the wall or floor slab, another worker can observe the inside from above the formwork and can tell the worker striking the formwork what it looks like. However, in an environment where the wall of the lower floor and the floor slab of the upper floor are poured at the same time, it is difficult to visually observe the placement of the wall surface from above, or the worker observing from above and the formwork Since the position of the worker who is striking is divided into the inside and outside of the formwork, making it impossible to directly communicate information, video analysis is used to analyze the shape and position of the casting surface, and the analysis results are communicated to the worker. is significant.

It is preferable to display the results of the analysis of the shape and position of the casting surface by the video analysis described above on a monitor device or the like in a manner that is easy to visually grasp, and to have the worker striking the mold view the monitor device. As a monitor device used here, a mobile monitor (for example, a tablet terminal) can be exemplified. The means for transmitting (transmitting) the analysis results to the monitor device is not limited, but for example, means for transmitting information by wireless technology can be mentioned.

Reference Signs List 1 concrete compaction vibrator 11 vibrating portion 11A tip portion 11B middle portion 12 grip portion 12A switch portion 12B wiring portion 13A sensor 13B sensor 14 hose portion 15 sensor member 15A first sensor 15B second sensor 15C electric wire 15D connector 15E cover portion 15F hard Part 15G Adapter 2 Concrete 3 Placement area 31 Mounting part 32 Rebar 4 Formwork 5 Power supply part 6 Control part 7 Recording part 8 Display part 8A Computer terminal display 8B Portable terminal 9A Ready-mixed concrete factory 9B Concrete mixer truck 9C Concrete pump truck S1 Rotating scan laser or 3D laser S2 Rotating scan laser or 3D laser S3 3D laser S4 3D laser C Camera M Reference marker E Worker H Helmet P Plot L1 Trajectory line L2 Boundary line

Claims (10)

a rotating scan laser or a 3D laser, or both, positioned above the concrete pouring area and directed toward the pouring location;
The scan laser or 3D laser is configured to measure the height of the concrete placing surface and the transition of the height,
Two or more of either one or both of the rotating scanning laser and the 3D laser are arranged, and the measurement ranges of the adjacent rotating scanning lasers or 3D lasers partially overlap. facility management system. Measurement to remove obstacles in the concrete placement area that hinder the measurement of the height of the concrete placement surface and the transition of the height by either or both of the rotating scan laser and 3D laser from the measurement. 2. The concrete placement management system according to claim 1, wherein the obstacle algorithm is preset. One or more of the casting start time, casting time, casting amount, casting speed, casting surface height, and casting surface inclination are recorded and managed. 3. A concrete placement management system according to Item 1 or 2. 4. The concrete placement management system according to any one of claims 1 to 3, characterized in that it is configured to record and manage joint placement time and overlapping placement time. 5. The concrete placement management system according to any one of claims 1 to 4, wherein the position where the compaction vibrator is inserted is detected by either one or both of a rotating scan laser and a 3D laser. The concrete placement range is photographed by a camera,
By analyzing the captured video, the position of the worker who operates the compaction vibrator is identified,
6. The compaction vibrator manages the position information of compaction of the concrete by specifying the position of the worker at the time when the compaction vibrator is inserted into the concrete. The concrete placement management system described in . Concrete placing according to any one of claims 1 to 6, wherein the vibrator insertion time, compaction time, insertion depth and withdrawal speed are managed for each position where concrete is compacted. management system. By plotting the compaction positions of concrete on a map that represents the concrete placement area and connecting these plots with lines in order of the vibrator insertion time, the trajectory of the compaction positions can be expressed. The concrete placement management system according to any one of claims 1 to 7. Predetermined values are set for the compaction time of concrete by the vibrator, the insertion depth of the vibrator, and the withdrawal speed, and the quality of concrete compaction is determined by whether or not each of these values is satisfied. Item 9. A concrete placement management system according to any one of items 1 to 8. A claim characterized in that the number of times compaction work is performed is specified in a predetermined area within the range of concrete placement, and the quality of concrete compaction is determined by whether or not the specified number of times has been carried out. Item 10. A concrete placement management system according to any one of Items 1 to 9.

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