JP2013159939A - Compaction control method for concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To objectively and quantitatively perform evaluation of a compaction degree of the entire compaction work area of concrete and determination of a range of compaction completion by a simple method without using a complicated device.SOLUTION: In this management method, a map of a compaction work area of concrete is displayed on a monitor coping with a GPS, and for each position for performing compaction by a vibrator in the compaction work area, an insertion position of the vibrator is obtained by GPS survey and specified on the map. An exertion range and degree of the compaction evaluated in consideration of a distance from the insertion position of the vibrator and vibration time for the position, and the range determined to be compaction completion are recorded on the map.

Description

  The present invention relates to a concrete compaction management method used for evaluating the extent and extent of compaction when mass concrete such as dam concrete is compacted, and for determining whether compaction is complete.

In concrete dam construction, compacting of dam concrete is very important to ensure the watertightness, durability and strength of the dam body. According to the Japan Society of Civil Engineers Standard Specification (Dam), when compacting with an internal vibrator, “determining the insertion interval of the vibrator and the vibration time per location so that a uniform vibration is applied to the concrete that has been laid. It is necessary to make these known to the workers in advance. " In addition, as evidence that the compaction is sufficient, it is no longer possible to see a line of cement paste appearing on the contact surface between the concrete and the board, or the concrete volume is reduced, and the surface appears shiny. Judging from the fact that the entire concrete appears to have melted uniformly. And in the case of general concrete, the standard of compaction time is supposed to be 5 to 15 seconds.
By the way, in the construction of such a dam, since a hydraulic heavy machine equipped with a vibrator called a vibrate is used as an internal vibrator in the main part of the dam concrete, the insertion interval of the vibrator is an interval between vibrators already installed, for example, It becomes about 60 cm. Moreover, in the case of dam concrete, the compaction time by buy-back is longer than that of general concrete, and is about 40 seconds when judged from the accumulated standard of dam concrete. Also, in this case, the compaction time of the concrete is determined by the operator's visual inspection. However, the homogenous concrete cannot be used, such as forgetting to apply the vibrator, insufficient compaction due to insufficient operation time, or material separation due to excessive operation time. The management situation for obtaining is not always sufficient.
Therefore, conventionally, it has been proposed to evaluate and judge the completion of compaction of concrete by quantitatively observing the load on the vibrator and changes in the physical properties of the concrete. This type of compaction management method is described in Patent Documents 1 and 2 and the like.

  Patent Document 1 relates to an effective operation management device for a concrete vibrator. In this management device, operation status data having a correlation with a load at the time of concrete vibrator operation of any one of power factor, frequency, and volume is detected, and the detection is performed. By comparing the measured value with a threshold value, it is determined whether or not the concrete vibrator is in an operating state that contributes to compaction. By managing the effective operation time in this manner, the operator can perform a compacting operation that meets the standard without depending on experience, and the administrator can manage the effective operation time as numerical data. As a result, the concrete compaction work conforming to the standard is performed, and the concrete compaction work and, consequently, the reliability of the concrete strength can be improved.

  Patent Document 2 relates to a concrete compaction judgment method. In this judgment method, the sound pressure due to vibration of a vibrator rises over time from the start of compaction to the end of compaction, and peaks. Appropriate sound pressure due to vibration of the vibrator from the start of compaction to the end of compaction Approximate the time-varying data with an envelope and set the joint load coefficient as the teacher data with the maximum matching rate, and then start compaction of the concrete in the process of completing the neural network and the actual compaction work While detecting the sound pressure change over time due to the vibration of the vibrator, A step of sequentially comparing the change in sound pressure due to sound with the teacher data using the neural network to obtain a match rate between the two, and a step of determining completion of compaction when the match rate is equal to or greater than a predetermined threshold value. Is included. In this way, it is possible to know the appropriate timing to stop the vibrator regardless of human judgment, so it is not possible to obtain sufficient strength because the vibrator is applied for too short time, or the time for applying the vibrator is too long for breathing It is possible to solve the problem of water generation, reduce the burden of monitoring the timing of compaction judgment by the worker, and further respond to the current situation where skilled workers are insufficient. it can.

Japanese Patent No. 3605576 Japanese Patent No. 4404494

However, in the concrete compaction management method according to Patent Documents 1 and 2, since the concrete compaction is evaluated and judged at the position where the compaction work is performed by the vibrator in the concrete compaction construction area, There is a problem that it is difficult to evaluate the degree of compaction or to determine the range of completion of compaction over the entire compaction construction area.
Conventionally, evaluation of the degree of compaction over the entire compaction area and judgment of completion of compaction have been performed based on the experience of the vibrator operator's experience. Will occur. If this incompletely compacted portion is in the vicinity of the mold, it can be found in the state of a jumper when the mold is removed, but it is extremely difficult to find in the concrete.

  The present invention solves such a conventional problem, and in this kind of concrete compaction management method, the compaction of the entire concrete compaction area is performed by a simple method without using a complicated device. The objective is to objectively and quantitatively evaluate the degree of compaction and determine the range of compaction completion.

In order to achieve the above-mentioned object, the present invention inserts a hydraulic vibrator into a compacted construction area of the placed concrete and applies the vibration to compact the concrete according to various concrete compaction evaluation criteria. In the concrete compaction management method for evaluating the degree of compaction and determining completion of concrete compaction, a map of the concrete compaction area is created and compacted by the vibrator in the concrete compaction area. For each position to be performed, using various surveying methods, the insertion position of the vibrator in the concrete compaction construction area is determined and specified on the map, and the compaction evaluation of the various concrete is performed for the compaction construction position. Range, degree and tightening of concrete compaction evaluated according to standards The range determined to be complete is recorded on the map based on the specified insertion position of the vibrator, and according to the record of the map, the degree of compaction of the concrete in the entire concrete compaction area and the range of compaction completion The gist is to manage.
In addition, this method is preferably embodied as follows.
(1) Put a plurality of grids in the map of the concrete compaction area, divide the map, and specify the range and degree of concrete compaction for each position where compaction is performed by a vibrator. It is displayed on the grid to be used.
(2) Put a plurality of squares in the map of the concrete compaction area, divide the map, and set the range determined to be concrete compaction for each position where compaction is performed by the vibrator. It is displayed on the grid to be used.
(3) A GPS sensor is mounted on the vibrator, and a map of the concrete compaction area is displayed on a GPS-compatible monitor. Every time the concrete is compacted by the vibrator, a GPS survey is performed on the monitor map. Display the insertion position of the vibrator in the concrete compaction construction area obtained in step 1, and record on the map of the monitor the range of concrete compaction for the compaction construction position, the extent, and the range determined to be compacted .
(4) The concrete compaction evaluation standard is to measure the hydraulic pressure when compacting the concrete of the vibrator while inserting the vibrator into the concrete in which the vibrator is placed and compacting the concrete. The degree of compaction of concrete shall be evaluated.
In this case, a hydraulic meter and / or a hydraulic sensor is used to measure the hydraulic pressure of the vibrator, and the hydraulic pressure of the vibrator starts to increase with the insertion of the vibrator and increases with time. The hydraulic pressure gradually decreases with the progress of compaction of concrete, displays the change over time of the hydraulic pressure approaching a substantially constant value, and the hydraulic pressure or the slope of the change in the hydraulic pressure is a predetermined threshold value It is preferable to determine that the compaction of the concrete has been completed at a time when the pressure decreases or when the rate of decrease in the oil pressure decreases.

  According to the concrete compaction management method of the present invention, a map of the concrete compaction construction area is created, and for each position where compaction is performed by a vibrator in the concrete compaction construction area, using various surveying methods, Determine the insertion position of the vibrator in the concrete compaction area, identify it on the map, and evaluate the compaction range, degree, and compaction of the concrete compacted according to various concrete compaction evaluation criteria. Is recorded based on the vibrator insertion position specified on the map, and the degree of compaction of concrete in the entire concrete compaction area and the scope of compaction are managed by recording on this map As a result, a simple method can be used without using complicated equipment. It is possible to determine the scope of the assessment and compaction completion of compaction construction area total about compaction of over preparative objectively and quantitatively, provides the exceptional effect that.

The figure which shows the compaction management method of the concrete by this invention The figure which shows the time-dependent change of the oil pressure of the hydraulic vibrator used for explanation of the compaction evaluation standard of concrete used for the management method, and the 1st floor, 2nd floor, 3rd floor differential curve The figure which shows the example of the record which shows the map which is displayed on the monitor which is used in the same management method, the range where the concrete compaction reaches, the extent and the compaction completion Figure used to explain the management method of the entire concrete compaction area in this management method Figure used to explain the management method of the entire concrete compaction area in this management method Figure used to explain the management method of the entire concrete compaction area in this management method Figure used to explain the management method of the entire concrete compaction area in this management method Figure used to explain the management method of the entire concrete compaction area in this management method

Next, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a concrete compaction management method.
As shown in FIG. 1, this concrete compaction management method uses a hydraulic vibrator 1 that vibrates a vibrator 11 with pressure oil supplied from the hydraulic pump through a hydraulic hose (hydraulic pipe) 10 by driving the hydraulic pump. Then, when concrete is compacted by applying vibration to the placed concrete C, the hydraulic pressure of the vibrator 1 having a correlation with the load during operation of the vibrator 1 is measured to evaluate the degree of compaction of the concrete C. Then, the completion of compaction of the concrete C is determined. In contrast to the conventional power factor, frequency, volume, and sound pressure caused by vibration of the vibrator, which are correlated with the load during vibrator operation, hydraulic pressure is considered to be the most comprehensive expression of dynamic load. The characteristic of the measured load fluctuation is close to the theoretical prediction.
In this concrete compaction work, a construction machine vibrator 2, in which a hydraulic vibrator 1 is mounted on a dedicated base machine, is employed in order to compact mass concrete such as dam concrete. Here, the buyback 2 includes a crawler 21, an operator cab 22 and a machine cab 23 that are rotatably disposed on the crawler 21, and an actuator 24 and a hydraulic vibrator 1 provided on the front side of the cab 22. The actuator 24 has a boom 242 supported by a cylinder 241 so as to be tiltable by a front portion of the cab 22, and an arm 244 supported rotatably by a cylinder 243 at a tip portion of the boom 242. The hydraulic vibrator 1 is attached to the front end portion of the cylinder by a cylinder 245 so as to be rotatable. In this case, the hydraulic vibrator 1 includes four rod-shaped vibrators 11, and a hydraulic motor (not shown) is driven by pressure oil supplied from the hydraulic pump through the hydraulic hose 10 by driving a hydraulic pump (not shown). Each rod-shaped vibrator 11 is vibrated.

  In this concrete compaction management method, the hydraulic pressure of the vibrator 1 is measured between a hydraulic hose 10 connected between the hydraulic pump of the vibrator 2 and the vibrator 1 and supplying pressure oil from the hydraulic pump to the vibrator 1. While the hydraulic meter 3 and / or the hydraulic sensor are installed and the vibrating vibrator 1 is inserted into the placed concrete C and the concrete C is compacted, the concrete C of the vibrator 1 is compacted by the hydraulic meter 3 and / or the hydraulic sensor. The hydraulic pressure at the time is measured, and the degree of compaction of the concrete C is evaluated by the change with time of the hydraulic pressure of the vibrator 1. Then, the time point when the compaction of the concrete C is completed is determined by a predetermined method using the change in hydraulic pressure over time.

  When the hydraulic gauge 3 and / or the hydraulic sensor are installed in the hydraulic hose 10, the hydraulic circuit of the Viback 2 is complicated, but the hydraulic system connected from the hydraulic pump to the vibrator hydraulic circuit is independent, Whether the boom 242 or the arm 244 is used by installing the oil pressure gauge 3 and / or the oil pressure sensor in this independent portion so that the oil pressure gauge 3 and / or the oil pressure sensor is not affected by other hydraulic systems. Regardless, it is possible to measure the hydraulic pressure acting only on the vibrator 1. By arranging the vibrator's hydraulic meter 3 at a position that can be seen from the cab 22 or the driver's seat, the operator of the buyback 2 can always check the hydraulic pressure of the vibrator 1 with the hydraulic meter 3. Further, by connecting the hydraulic sensor to a personal computer, the hydraulic pressure is converted into a voltage by the hydraulic sensor, and this can be recorded on the personal computer or the like.

  Thus, by installing the hydraulic pressure gauge 3 and / or the hydraulic pressure sensor in the hydraulic hose 10 of the vibrator 1 of the vibrator 2, the operator of the vibrator 2 can easily measure the hydraulic pressure of the vibrator 1. While the operator inserts the vibrating vibrator 1 into the placed concrete C and compacts the concrete C, the operator displays the change in the hydraulic pressure of the vibrator 1 on the hydraulic gauge 3 and / or the hydraulic sensor, and monitors the hydraulic pressure. Check the progress of compaction of concrete C. In this case, before measuring the hydraulic pressure of the vibrator 1, it is preferable to perform a warm-up operation of the vibrator 1 so that the temperature of the pressure oil is constant. While the concrete C is compacted, if the change in the hydraulic pressure of the vibrator 1 is displayed with the hydraulic gauge 3 and / or the hydraulic sensor, the hydraulic pressure of the vibrator 1 starts increasing with the insertion of the vibrator 1 and increases with the passage of time. As a result, the hydraulic pressure gradually decreases with the progress of compaction of the concrete C, and approaches a substantially constant value. The operator evaluates the degree of compaction of the concrete C from this change in hydraulic pressure over time.

  Measure the oil pressure when the vibrator concrete is compacted with a hydraulic meter and / or oil pressure sensor, and see the measurement result of this oil pressure as a time-dependent curve of the oil pressure. doing. The tendency of this curve is similar to the monitoring results of vibrator load torque in previous studies. When the concrete compaction behavior is examined, concrete compaction is performed in two stages according to the load torque literature. Done. In the first stage, the cement paste is liquefied, the aggregate particles are arranged and moved, and the horizontally placed aggregate particles try to change into a vertical state, and a maximum load torque is generated. Here, the concrete and the vibrator are in close contact with each other, and the load on the vibrator is maximized. This is the initial settlement stage. In the second stage, bubbles in the concrete (mainly entrapped air) move upward and defoaming occurs. A liquefied cement paste layer is formed in the vicinity of the vibrator, causing material separation. Here, the degree of adhesion between the concrete and the vibrator decreases. As a result, the transmission of the vibration wave is lowered, and it is considered that the load torque is reduced. Here, the subsidence of the surface settles and becomes stable, and approaches the torque during idling. If this stage is continued for a long time, material separation occurs. An oil pressure gauge and a hydraulic sensor are effective in grasping such load torque easily and reliably.

This concrete compaction evaluation method uses the change in the hydraulic pressure of the vibrator over time (the shape of the hydraulic pressure change curve), but the degree of concrete compaction varies depending on the physical properties of the concrete and construction conditions. Based on the above, a test is performed at each construction site, and the concrete compaction point is determined from the change over time of the vibrator hydraulic pressure. There are several determination methods, but typical ones are as follows.
(1) It is determined that concrete compaction is complete when the hydraulic pressure falls below a certain threshold. In the case shown in FIG. 2, it is determined that the compaction is completed at 65 seconds.
(2) It is determined that the compaction of the concrete has been completed when the slope of the change in hydraulic pressure becomes smaller than a certain threshold value. In the case shown in FIG. 2, it is determined that the compaction is completed at the time point of 70 seconds.
(3) It is determined that the concrete has been compacted when the degree of adhesion between the concrete and the vibrator decreases and the rate of decrease in hydraulic load decreases. If the shape of the second-order differential of the oil pressure change curve is a positive number, the oil pressure change over time is concave, and the change point at which this maximum value is reached, that is, the point at which the change rate of the recess is maximized is determined by compaction. It can be considered a standard. This point is the point at which the curve of the third order derivative changes from positive to negative. In the case shown in FIG. 2, it is determined that the compaction is completed at the time point of 46 seconds.
It should be noted that the determination of the compaction of the concrete at the vibrator insertion position may be an automatic determination based on a change in the oil pressure, or a determination based on a comprehensive operator judgment including a change in the oil pressure.

In addition, in this concrete compaction management method, in particular, a map of the concrete compaction area is prepared, and various surveying methods are used for each position where the concrete is compacted by a vibrator in the concrete compaction area. The vibration insertion position in the concrete compaction area is obtained and specified on the map, and the concrete compaction evaluation method described above for the compaction construction position is used as an evaluation standard, and the distance from the vibrator insertion position The range of concrete compaction evaluated in consideration of vibration time, the extent, and the range judged to be compacted are recorded based on the vibrator insertion position specified on the map. The degree of compaction of concrete in the entire compaction area and the range of compaction completion It shall be.
The management method over the entire compaction area is such that the compacted area is recorded on the map so that it can be confirmed that the compaction has been completed over the entire concrete compaction area. Since the effect of compaction of the concrete by the vibrator is related to the distance from the vibrator insertion position and the time the vibrator has acted on, considering the distance from the vibrator insertion position and the vibration time of the vibrator, The feature is that the range and degree of evaluation are evaluated, and the range of completion of compaction is determined.

In addition, in this management method, the range of influence of the vibrator used here is wide, so considering the distance from the vibrator, weighting by the distance, evaluating the extent and extent of concrete compaction, The completion of compaction of concrete will be judged.
In the case of this management method, using a well-known GPS (Global Positioning System) system, a GPS sensor is mounted on the vibrator, and a concrete compaction area map is displayed on a GPS-compatible monitor, in this case, the above-mentioned personal computer. Each time the concrete is compacted with a vibrator, the insertion position of the vibrator in the concrete compaction area determined by GPS survey is displayed on the monitor map and tightened on the monitor map. Record the extent to which the concrete is compacted and the extent to which the compaction is applied and the range determined to be compacted.

FIG. 3 shows a map to be displayed on the monitor, and a record example of a range in which the compaction of the concrete is covered, a degree, and a range determined to be compacted.
As shown in FIG. 3, in the map displayed on this monitor, the mesh is divided by putting a mesh composed of a plurality of grids on the map, and the range in which the concrete is compacted at each position where compaction is performed by a vibrator. The extent determined as the completion of compaction of the concrete and the range determined to be complete are displayed in the corresponding squares on the map.
In this case, the cells corresponding to the range of compaction of the concrete are displayed with a colorless color or a color defined as a color representing the range of compaction, and the degree of compaction is quantified (in this case, compaction). The degree of compaction is expressed as a percentage (%) and is displayed in squares, and squares corresponding to the range determined to have been compacted with concrete are displayed with a color determined as the color representing completion of compaction.

Design examples of this management method are shown in FIGS.
FIG. 4 shows the dimensions of each part of the four vibrators used here. As shown in FIG. 4, the four vibrators are arranged at equal intervals in a horizontal line within a range of 180 cm, and the intervals between the vibrators are 60 cm.
First, consider the range of influence of this vibrator in the concrete compaction zone. FIG. 5 illustrates a part of the compacted area of the concrete. A mesh is created on the compacted area, and the compacted area is divided into a plurality of squares. Each square has a length of 20 cm on one side, and nine squares (1 square 20 cm × 9 = 180 cm) arranged in the horizontal direction in the center of FIG. 5 are used as the vibrator insertion positions. The distance from the insertion position is entered.
The influence force of the vibration of the vibrator in the concrete compaction region is attenuated according to the distance, and can be expressed as a function of the distance. In this case, when the distance of each square in FIG. 5 is expected to be a function of the square of the distance, it is as shown in FIG.
Next, from FIG. 6, the position where the vibrator affects and the effect thereof will be considered. The effect of compaction of the vibrator is related to the distance from the vibrator insertion position and the time the vibrator has acted on, and increases as the distance from the vibrator insertion position decreases, and decreases as the distance increases. Therefore, it is assumed that the effect of compaction is reduced by the square of the distance. Here, it is assumed that the influence of compaction by the vibrator extends to a distance of 120 cm from the insertion position of the vibrator. And 120cm squared (the original value is 1.44, but here 1.44 is rounded off and written as 1.4), and the constant representing the effect of compaction. Constants representing the effect of compaction in each square are as shown in FIG. From FIG. 7, the constant is 1.44 at the position of the vibrator, and the constant is zero at a position 120 cm (6 squares) away from the vibrator.
And since the effect of compaction of the vibrator is related to the distance from the vibrator insertion position and the time when the vibrator acted, the range from the vibrator insertion position to the distance of 60 cm in consideration of the vibrator insertion position and vibration time. Assuming that the compaction of the concrete is completed in a predetermined time (for example, 40 seconds), a compaction effect value indicating the compaction effect, that is, a compaction degree is obtained. In this case, the constant representing the effect of compaction at a position 60 cm away from the vibrator according to FIG. 7 is 1.1. Here, if the compaction effect value (consolidation degree) at this position is 100 (%), The compaction effect value at each square shown in FIG. 7 is as shown in FIG. According to FIG. 8, the degree of compaction at the vibrator insertion position is 133, the degree of compaction at a position 60 cm from the vibrator insertion position is evaluated as 100, and squares having a compaction degree of 100 or more are evaluated for a predetermined time (for example, 40 Seconds), and it is determined that compaction is complete. In addition, each point of the compaction area of the concrete corresponding to the square with a compaction degree of less than 100 is the compaction loading time by the vibrator, and then the compaction degree is evaluated and the completion of compaction is determined. Go.
Such evaluation of the degree of compaction of concrete and determination of completion of compaction can be performed using a personal computer connected to the hydraulic sensor described above or a personal computer different from this.
In this way, in the concrete compaction area, the range of compaction and the degree of compaction determined for the compacting position by the vibrator are displayed in the corresponding squares of the map shown in FIG. More than 100 squares are displayed in color as a range of completion of compaction.

  In this way, by applying the color determined as the color indicating the completion of compaction to the square corresponding to the range determined as the completion of compaction of the concrete, the color representing the completion of compaction of the square on the map is displayed. You can see the area where the concrete has been compacted or unfinished by just looking at it, and when all the squares on the map are filled with a color indicating completion of compaction, the entire compaction area is tightened. It can be confirmed that the hardening is completed. In addition, squares corresponding to the range of concrete compaction are displayed with a color that is colorless or defined as a color that represents the range of compaction, and the degree of compaction is quantified and displayed in squares. By doing so, it is possible to confirm the range where the compaction is insufficient and the extent thereof, and with respect to the range where the compaction is insufficient, it is possible to determine the completion of compaction by the integration time of compaction. In this way, it is possible to grasp at a glance the progress of compaction construction in the entire concrete compaction area, and it is possible to execute appropriate construction management.

  As described above, according to the concrete compaction management method, when the vibrator concrete is compacted by a hydraulic meter and / or a hydraulic sensor while the vibrating vibrator is inserted into the placed concrete and compacted. Measure the hydraulic pressure of the vibrator and evaluate the degree of concrete compaction by the change in the hydraulic pressure of the vibrator over time, or when the slope of the hydraulic pressure or the change in hydraulic pressure falls below a predetermined threshold, or the rate of decrease in hydraulic pressure Since the compaction of the concrete is judged to be complete, the compaction of the concrete can be evaluated more objectively and quantitatively, and there is less noise and the conditions are subject to changes in hydraulic pressure in addition to concrete compaction. Therefore, there is an advantage that the data is stable. In addition, since only a hydraulic meter and / or a hydraulic sensor is installed in the vibrator's hydraulic system, there is an advantage that it is simple and has few failures without using a complicated device.

  In addition, in this concrete compaction management method, a map of the concrete compaction area is displayed on a GPS-compatible monitor and the concrete compaction area is compacted by a vibrator in the concrete compaction area. For each position, the position of the vibrator inserted in the concrete compaction area is determined by GPS measurement and specified on the map, and the concrete compaction evaluation method described above is used as the evaluation standard for the compaction construction position. The range of the concrete compaction evaluated in consideration of the distance from the insertion position and the vibration time, the extent, and the range judged to be compacted are recorded based on the vibrator insertion position specified on the map. Concrete the entire concrete compaction area by recording Since the degree of compaction and the range of completion of compaction are managed, it is possible to evaluate and compact the degree of compaction of the entire concrete compaction area by a simple method without using complicated equipment. The range of completion can be determined objectively and quantitatively. Further, since only a GPS sensor is installed in the vibrator 1, there is an advantage that it is simple and has few failures without using a complicated device.

In this embodiment, regarding the method for managing the entire concrete compaction construction area, as a concrete compaction evaluation standard, the vibrator concrete is compacted while the vibrator is inserted into the placed concrete and compacted. It was assumed that the degree of compaction of concrete was evaluated by measuring the oil pressure at the time and the change in the oil pressure of the vibrator over time. However, this evaluation standard is already known, such as Patent Documents 1 and 2 exemplified as conventional techniques. As long as the evaluation criteria are appropriate, the same effects as described above can be achieved for the management of the entire compacted construction area.
In the case of this embodiment, the squares corresponding to the range of compaction of the concrete on the map are displayed with a colorless color or a color defined as a color representing the range of compaction, and the compaction The degree is quantified and displayed in squares, and squares corresponding to the range determined as concrete compaction completion are displayed with the color set as the color indicating completion of compaction, but the display method is If it is optional and the range and extent of compaction and the range of compaction completion can be visually confirmed, the same effect as described above can be obtained for the management of the entire compaction construction area.
Further, in the case of this embodiment, the map is displayed on the monitor, but a map made of paper, resin, metal, etc. may be used. In this case, the color, The range, extent, and completion range of compaction can be displayed in the same way using numbers, letters, symbols, etc. Even in this way, the same effect as described above for the management of the entire compaction construction area Can be played.
Furthermore, in the case of this embodiment, the vibrator insertion position in the concrete compaction construction area was obtained by GPS surveying. The measurement of the vibrator insertion position was performed by measuring the distance using light waves or radio waves. A measuring method using other surveying means such as a distance measuring instrument may be adopted, and as long as the surveying method is appropriate, the same effect as described above can be achieved for the management of the entire compacted construction area. .

1 Hydraulic vibrator 10 Hydraulic hose (hydraulic pipe)
DESCRIPTION OF SYMBOLS 11 Bar-shaped vibrator 2 Buyback 21 Crawler 22 Operation room 23 Machine room 24 Actuator 241 Cylinder 242 Boom 243 Cylinder 244 Arm 245 Cylinder 3 Oil pressure gauge C Concrete

Claims (6)

When a hydraulic vibrator is inserted in the compacted construction area of the placed concrete and compacted by applying vibration, the concrete compaction evaluation criteria are evaluated according to various concrete compaction evaluation standards, and the concrete compaction is completed. In the concrete compaction management method for judging
Create a map of the concrete compaction construction area,
For each position where the vibrator is compacted by the vibrator in the concrete compaction construction area, using various surveying methods, the insertion position of the vibrator in the concrete compaction construction area is determined and specified on the map,
Based on the insertion position of the specified vibrator on the map, the extent to which the compaction of the concrete is evaluated according to the compaction evaluation criteria for the various concretes, the extent and the range determined to be compacted. Record,
Based on the record of the map, the concrete compaction degree of the entire concrete compaction area and the range of compaction completion are managed.
A concrete compaction management method characterized by that.   Divide the map into a map of the concrete compaction area and divide the map. For each position where compaction is performed by a vibrator, the range and degree of compaction of the concrete are indicated on the map. The concrete compaction management method according to claim 1, wherein the concrete compaction management method is displayed.   Divide the map into a map of the concrete compaction area and divide the map, and for each position where compaction is performed by the vibrator, the range determined to be concrete compaction is the corresponding square on the map. The concrete compaction management method according to claim 1 or 2, wherein the concrete compaction management method is displayed.   A GPS sensor is mounted on the vibrator, a map of the concrete compaction area is displayed on a GPS-compatible monitor, and each time the concrete is compacted by the vibrator, a GPS survey is performed on the monitor map. The vibrator insertion position in the concrete compaction area is displayed, and the range of the concrete compaction at the compaction construction position, the extent, and the range determined to be compacted are recorded on the monitor map. The concrete compaction management method according to any one of Items 1 to 3.   The concrete compaction evaluation standard is to measure the hydraulic pressure when compacting the concrete of the vibrator while the concrete is compacted by inserting the vibrator into the placed concrete. The concrete compaction management method according to any one of claims 1 to 4, wherein the compaction degree is evaluated.   A hydraulic meter and / or a hydraulic sensor is used to measure the hydraulic pressure of the vibrator, and the hydraulic pressure of the vibrator starts to increase with the insertion of the vibrator in the hydraulic meter and / or the hydraulic sensor, and increases with time and reaches a peak. As the concrete compaction progresses, the oil pressure gradually decreases, the change over time of the oil pressure approaching a substantially constant value is displayed, and the oil pressure or the slope of the oil pressure change falls below a predetermined threshold value. 6. The concrete compaction management method according to claim 5, wherein it is determined that the compaction of the concrete has been completed when the ratio of the decrease in the hydraulic pressure decreases.