JP7564441B2 - Management device, management program and management system - Google Patents

Description

The present invention relates to a management device, a management program, and a management system.

In pile construction, where piles are installed in the ground, it is important to understand the geological conditions of the planned construction site. In particular, it is important to understand the depth of the bearing layer that will support the weight of the structure.
One method for determining whether or not the drilling head has reached the supporting layer is to make the determination based on changes in the current value or the integrated current value of the auger motor of the drilling machine (see, for example, Patent Document 1).
In addition to determining whether the supporting layer has been reached, there is also a method of calculating the horizontal deviation of a pile hole using measuring equipment such as a total station to evaluate the verticality of the pile hole (see, for example, Patent Document 2).

Patent No. 4958028 Patent No. 6496540

However, in order to determine whether the drilling head has reached the supporting layer, the drilling worker must visually check the graphs of the current value and the integrated current value and check the overall drilling situation to determine whether the drilling head has reached the supporting layer. Therefore, a considerable amount of experience is required before the drilling head can accurately determine whether the drilling head has reached the supporting layer. For this reason, there is a possibility that variations due to experience and individual differences may occur.
The present invention aims to control the reach of the substrate.

(1) According to one aspect of the present invention, a management device includes an acquisition unit, a calculation unit, and a determination unit. The acquisition unit acquires an amount of eccentricity from a drilling core of a drilling device and an excavation depth measured during ground excavation. The calculation unit calculates an eccentricity index value of the drilling device for each unit depth using the amount of eccentricity. The determination unit determines whether or not a supporting layer has been reached using the eccentricity index value.
According to the above configuration (1), the management device calculates the eccentricity index value and combines it with construction data such as the current value to determine whether or not the support layer has been reached, making it possible to manage the reach of the support layer without variation in judgment due to the manager's experience or personal differences.

(2) In some embodiments, in the above (1),
The determination unit determines that the support layer has been reached when the eccentricity index value at a first depth is greater than the eccentricity index value at a second depth shallower than the first depth.
According to the above configuration (2), the eccentricity index value can be used to compare the hardness of the strata at each certain depth interval to determine whether the supporting layer has been reached, thereby improving the accuracy of determining whether the supporting layer has been reached.

(3) In some embodiments, in the above configuration (1) and configuration (2),
The eccentricity index value is an average amount of eccentricity or an integrated amount of eccentricity.
According to the above configuration (3), since a more accurate eccentricity index value can be obtained by using the statistical value of the amount of eccentricity, the accuracy of the determination of whether the support layer has been reached can be further improved.

(4) In some embodiments, in any one of the above configurations (1) to (3),
The acquiring unit acquires an inclination amount of the excavation device measured during ground excavation. The determining unit further uses the inclination amount to determine whether the bearing layer has been reached.
According to the above configuration (4), since it is possible to determine whether or not the support layer has been reached by further using the tilt amount in addition to the eccentricity index value, it is possible to improve the accuracy of the determination of whether the support layer has been reached.

(5) In some embodiments, in any one of the above configurations (1) to (4),
The management device further includes a generating unit that generates graph data of at least one of the amount of eccentricity and the eccentricity index value for each unit depth.
According to the above configuration (5), the manager terminal displays the graph data, so that the manager can easily visually grasp the construction status.

(6) In some embodiments, in any one of the above configurations (1) to (5),
The management device further includes a notification unit that performs a push notification when the eccentricity index value is equal to or greater than a threshold value.
According to the above configuration (6), an alert is automatically issued even if the administrator or viewer does not constantly monitor the construction status. Therefore, the administrator or viewer only needs to pay closer attention to the construction status when an alert is issued, thereby improving user convenience.

(7) In some embodiments, in any one of the above configurations (1) to (4),
The management device further includes a generating unit that generates, based on the eccentricity index value for each unit depth, pile hole shape data indicating a shape of the pile hole including a diameter of the pile hole from the ground surface to the current excavation depth.
According to the above configuration (7), the pile hole shape representing the outer shape of the pile hole based on the eccentricity index value can be displayed, for example, on an administrator terminal or included in a document, etc., thereby further improving the reliability of the construction status.

(8) In some embodiments, in the above configuration (7),
The management device further includes a notification unit that performs a push notification when a diameter of the pile hole in the pile hole shape data is equal to or larger than a threshold value when the pile is driven.
According to the above configuration (8), in a stratum portion where the diameter of the pile hole is large, it is possible to urge caution not to tilt the pile when driving the pile.

(9) In some embodiments, in any one of the above configurations (1) to (8),
The unit depth is variable depending on at least one of the excavation layer and the excavation depth.
According to the above configuration (9), measurement data and construction data can be collected more flexibly, and the amount of data can also be reduced.

(10) In one embodiment of the present invention, a management program causes a computer to function as an acquisition means for acquiring the amount of eccentricity from the drilling core of the drilling device and the drilling depth measured during ground excavation, a calculation means for calculating an eccentricity index value of the drilling device for each unit depth using the amount of eccentricity, and a determination means for determining whether or not the supporting layer has been reached using the eccentricity index value.
According to the above configuration (10), the management device calculates the eccentricity index value and combines it with construction data such as the current value to determine whether or not the support layer has been reached, making it possible to manage the reach of the support layer without variation in judgment due to the manager's experience or personal differences.

(11) A management system according to one aspect of the present invention includes a measuring device, a management device, and an administrator terminal. The measuring device measures an amount of eccentricity of an excavation device from a core of an excavation device during ground excavation. The management device measures a current value of a motor that rotates the excavation device during the ground excavation, an integrated current value calculated based on the current value, and an excavation depth. The administrator terminal includes an acquisition unit, a calculation unit, and a determination unit. The acquisition unit acquires the amount of eccentricity from the measuring device and the excavation depth from the management device. The calculation unit calculates an eccentricity index value of the excavation device for each unit depth using the amount of eccentricity. The determination unit uses the eccentricity index value to determine whether or not the supporting layer has been reached.
According to the above configuration (11), the management device calculates the eccentricity index value and combines it with construction data such as the current value and the integrated current value to determine whether or not the support layer has been reached, thereby making it possible to manage the reach of the support layer without variation in judgment due to the manager's experience or personal differences.

The present invention allows you to manage reach to your support base.

FIG. 1 is a conceptual diagram showing a management system according to the present embodiment. FIG. 2 is a block diagram showing a management device according to the present embodiment. FIG. 3 is a sequence diagram showing the operation of the management system according to the present embodiment. FIG. 4 is a flowchart showing the details of the support base determination process. FIG. 5 is a diagram showing an example of the measurement data and the construction data displayed on the manager terminal according to the present embodiment. FIG. 6 is a diagram showing an example of a pile hole shape generated based on the eccentricity index value. FIG. 7 is a flowchart showing the operation of the management device when driving piles.

The following describes in detail the management device, management program, and management system according to an embodiment of the present invention with reference to the drawings. Note that in the following embodiments, parts with the same numbers perform similar operations, and will not be described again.

The management system according to the present embodiment will be described with reference to the conceptual diagram of FIG.
The management system shown in Fig. 1 includes a pile driver 1, a measuring device 2, a management device 3, an administrator terminal 4, and a viewer terminal 5. The pile driver 1, the measuring device 2, the management device 3, the administrator terminal 4, and the viewer terminal 5 are each capable of wirelessly transmitting and receiving data. Note that data may be transmitted and received by wire, not limited to wirelessly.
1, there is only one pile driver 1, but there may be multiple pile drivers 1. Similarly, there may be multiple measurement devices, administrator terminals 4, and viewer terminals 5. The management device 3 may be mounted on a main box of the pile driver 1, or on the administrator terminal 4.

In addition, in this embodiment, the drilling rod used when constructing prefabricated piles using the pile driver 1 is described as an example, but the present invention is not limited to this and can be applied to drilling heads, screws, etc. in the same way. It can also be applied to cast-in-place pile construction methods such as Kelly bars used in the earth drill method and casings used in the all-casing method. In other words, the processing by the management device 3 in this embodiment can be applied to any drilling device used for ground excavation.

The pile driver 1 has a drilling rod (hereinafter simply referred to as the rod) that can move up and down, and drills pile holes by rotating the rod. The pile driver 1 is equipped with various sensors that measure the instantaneous current value, integrated current value, drilling depth, and cement milk injection amount of the auger motor when the pile driver 1 is in operation. The structure of the pile driver 1 is similar to that of a general pile driver, so a detailed description will be omitted.

The measuring device 2 is a measuring instrument such as a total station, transit, or theodolite, which measures the eccentricity and tilt of the rod of the pile driver 1 during ground excavation, and obtains the measurement data. The eccentricity is the horizontal deviation of the rod, and here it is assumed that deviations in two directions, the x direction (east-west direction) and the y direction (north-south direction), are used, but it may also be an eccentricity amount that is a combination of the deviations in the two directions. The tilt amount indicates the angle at which the rod is tilted from the vertical direction, and it is assumed that deviations in two directions, the x direction (east-west direction) and the y direction (north-south direction), are used, but it may also be an tilt amount that is a combination of the tilt amounts in the two directions.

The management device 3 is realized, for example, by a processor, and acquires construction data measured by various sensors of the pile driver 1. Specifically, for example, current data including instantaneous current value and integral current value can be acquired from the auger control panel of the pile driver 1, excavation depth data from the depth detector, and cement milk flow rate data from the flow rate detector as construction data. The management device 3 performs a judgment of whether the supporting layer has been reached based on the construction data and the measurement data.

The manager terminal 4 is, for example, a terminal such as a smartphone, feature phone, tablet PC, or notebook PC. The manager terminal 4 has a browser function that displays the measurement data and construction data on the screen of the manager terminal 4. Note that the manager terminal 4 is assumed to be a portable terminal, but is not limited to this and may be a desktop PC that is stationary in a stationary position, etc.

The viewer terminal 5 is a terminal similar to the administrator terminal 4 or a desktop PC. However, the functions of the viewer terminal 5 with respect to the management device 3 are limited. For example, unlike the administrator terminal 4, the viewer terminal 5 cannot send instructions regarding construction management to the pile driver 1, and can only view construction data, judgment results, reports, etc.

Next, details of the management device 3 according to this embodiment will be described with reference to the block diagram of FIG.
The management device 3 according to this embodiment includes a processing circuit 31, a storage unit 32, and a communication interface 33, which are connected to each other via a bus.

The processing circuit 31 is realized by any one of a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), etc., or a combination of these. The processing circuit 31 includes a data acquisition unit 311, a calculation unit 312, a determination unit 313, a generation unit 314, and a notification unit 315.

The data acquisition unit 311 acquires construction data from the pile driver 1 and acquires the amount of rod eccentricity from the measuring device 2.

The calculation unit 312 uses the eccentricity amount to calculate the eccentricity index value of the rod for each unit depth. The eccentricity index value is, for example, the average eccentricity amount or the integral eccentricity amount for each unit depth. The average eccentricity amount is the average value of the eccentricity amount measured in a section of unit depth, for example, 1 m. The integral eccentricity amount is a value obtained by integrating the eccentricity amount or the average eccentricity amount measured in a section of unit depth over time at a specified pitch.

The determination unit 313 uses the current value and eccentricity index value contained in the construction data to determine whether the support layer has been reached.

The generating unit 314 generates graph data showing the progress of the eccentricity or the eccentricity index value based on the construction data and the time series data of the eccentricity or the time series data of the eccentricity index value. The generating unit 314 further generates a determination result of reaching the supporting layer. The generating unit 314 further generates pile hole shape data showing the shape of the pile hole reflecting the diameter of the pile hole from the ground surface to the current excavation depth based on the eccentricity index value for each unit depth.

The notification unit 315 transmits the graph data, the judgment results, and the post hole shape data generated by the generation unit 314 to, for example, the administrator terminal 4 or the viewer terminal 5.

The storage unit 32 is composed of a hard disk drive (HDD), a solid state drive (SSD), etc., and stores the construction data. The construction data includes the construction location, excavation date and time, and excavator model information, in addition to the data obtained from the various sensors described above. However, it is not limited to these, and other data that can be obtained by the pile driver 1, and information obtained by boring surveys (columnar diagrams, N values), etc. may be stored in association with each other.

The communication interface 33 is an interface that conforms to a specific communication standard and is used to transmit and receive data between the devices shown in FIG. 1. The communication standard may be a wireless LAN (Local Area Network) conforming to Wi-Fi (registered trademark), a wireless network such as Bluetooth (registered trademark), or a wired network using a LAN cable or the like.

Next, the operation of the management system according to this embodiment will be described with reference to the sequence diagram in FIG. 3. In the example of FIG. 3, it is assumed that the management device 3 is separate from the administrator terminal 4.

In step S301, the measuring device 2 is installed in a position where the amount of eccentricity of the rod can be measured.
In step S302, the measurement device 2 sets the pile core and acquires pile core position data of the rod. Specifically, the rod is set so that the center of the rod coincides with the pile core, and pile core position data at that time is acquired.
In step S303, the measurement device 2 transmits the pile core position data to the pile driver 1, the management device 3, and the manager terminal 4. Note that it is sufficient that the pile core position data is transmitted to at least the management device 3, and that the measurement device 2 transmits the pile core position data to the manager terminal 4 in response to a request from the manager terminal 4.

In step S304, drilling of the pile hole is started.
In step S305, the measurement device 2 acquires the amount of eccentricity and the amount of tilt of the rod as measurement data.
In step S306, the measurement device 2 transmits the measurement data to the pile driver 1, the management device 3, and the administrator terminal 4. As with the pile core position data, it is sufficient that the measurement data is transmitted to at least the management device 3, and the measurement device 2 transmits the measurement data to the administrator terminal 4 in response to a request from the administrator terminal 4.

In step S307, the management device 3 acquires construction data from the pile driver 1.
In step S308, the management device 3 transmits the construction data to the manager terminal 4 and the pile driver 1.
In step S309, the management device 3 uses the measurement data received from the measurement device 2 and the construction data measured in step S307 to determine whether or not the supporting layer has been reached. The determination of whether the supporting layer has been reached will be described later with reference to Fig. 4. Note that, until the supporting layer is reached, the processes from step S305 to step S309 are continued at a predetermined sampling interval.

In step S310, the management device 3 transmits the result of the determination of whether the pile driver 1 has reached the supporting layer to the manager terminal 4.
In step S311, the drilling of the pile hole is completed.

The measurement data may be transmitted to the management device 3 and then transmitted from the management device to the administrator terminal 4 as part of the construction data. For example, the eccentricity amount and tilt amount may be recorded as construction data in the management device 3 along with the pile identification number, current value, amount of cement milk injected, etc., and transmitted to the administrator terminal 4, thereby further improving the credibility of the report as proof of the bearing layer management.

In the example of FIG. 3, it is assumed that the management device 3 is separate from the administrator terminal 4, but the management device 3 may be included in the administrator terminal 4. For example, the pile driver 1 may be equipped with only the function of acquiring the construction data of the management device 3, and the administrator terminal 4 may acquire the construction data from the pile driver 1 and the measurement data from the measurement device 2, and perform the support layer determination process in step S309.

Next, details of the support layer determination process in step S309 will be described with reference to the flowchart in Fig. 4. Here, it is assumed that an average amount of eccentricity is calculated as the eccentricity index value.
In step S401, the data acquisition unit 311 acquires the amount of eccentricity from the measurement data.
In step S402, the data acquisition unit 311 acquires the excavation depth from the construction data.

In step S403, the calculation unit 312 calculates the average eccentricity for each set unit depth using the eccentricity. The unit depth is assumed to be, for example, 1 m, but may be variable depending on the excavation layer or the excavation depth. For example, the unit depth may be 1 m for a layer whose N value is less than a threshold value, and 300 mm for a layer whose N value is equal to or greater than the threshold value.
In step S404, the determining unit 313 compares the average eccentricity calculated in step S403 with an average eccentricity calculated in a layer shallower than the calculated average eccentricity.

In step S405, if the average eccentricity in the deep layer (first depth) is greater than the average eccentricity in the shallow layer (second depth) in step S404, the determination unit 313 determines that the supporting layer has been reached. The amount of eccentricity decreases as the excavation depth increases because the rod is constrained by soil and sand. However, when the supporting layer is reached, the layer is hard, so the rod shakes more and the amount of eccentricity also increases. Therefore, by calculating the average eccentricity for each unit depth and comparing it with the average eccentricity calculated previously, it is possible to determine whether the supporting layer has been reached.
If it is determined that the support layer has been reached, the process ends, and if it is determined that the support layer has not been reached, the process returns to step S401 and the same process is repeated.

Note that, even if an integrated amount of eccentricity is used as the eccentricity index value instead of the average amount of eccentricity, the reaching of the support layer can be determined in the same manner as in the case of the average amount of eccentricity.
In addition, by using the inclination amount instead of or together with the eccentricity index value, the reaching of the supporting layer can be determined in a similar manner. For example, like the eccentricity amount, the inclination amount also becomes smaller as the excavation depth increases, and the inclination amount becomes larger when the supporting layer is reached. Therefore, by comparing the inclination amount of a layer at a certain depth with the inclination amount of a layer shallower than the said depth, it can be determined that the supporting layer has been reached if the inclination amount of the deeper layer is greater than the inclination amount of the shallower layer.

In addition to the eccentricity index value and the amount of inclination, a more accurate determination of whether the supporting layer has been reached can be made by combining multiple elements such as the columnar diagram and N value obtained from the boring survey, the instantaneous current value and integral current value included in the construction data, and further the vibration of the auger motor and the drilling sound. For example, by referring to the drilling depth, columnar diagram, and N value, when it is assumed that the rod has reached a depth of a layer suitable for the supporting layer, it may be determined that the supporting layer has been reached if the eccentricity index value, integral current value, and instantaneous current value are equal to or greater than a first threshold value, and the vibration of the auger motor and the drilling sound are equal to or greater than a second threshold value.

In addition, the management device 3 may not determine whether the support layer has been reached, but may instead display the construction data (current value, integral current value, etc.) and measurement data (eccentricity index value and tilt amount) on the manager terminal 4 to provide information to assist the manager in determining whether the support layer has been reached. Alternatively, the determination result by the determination unit 313 of the management device 3 that the support layer has been reached may be transmitted to the manager terminal 4 to assist the manager in determining whether the support layer has been reached, in addition to information to assist the manager in determining whether the support layer has been reached, such as the construction data and measurement data described above.

Next, an example of the measurement data and the construction data displayed on the manager terminal 4 will be described with reference to FIG.
FIG. 5 is an example of a management screen 50 displayed on the manager terminal 4. The management screen 50 displays a list of time series data for a columnar diagram 51 showing information on a stratum according to depth, an N value 52, an instantaneous current value 531 and an integral current value 532 up to the currently excavated depth, an eccentricity amount 541, and an inclination amount 542. The columnar diagram 51 and the N value 52 are displayed as a graph using data from a boring survey held on the manager terminal 4 side. The data from the boring survey may be acquired by the manager terminal 4 from the storage unit 32 of the management device 3 and displayed on the screen of the manager terminal 4. The manager terminal 4 may store data from the boring survey and display the data together with the construction data on the manager terminal 4 side. Alternatively, data from the boring survey may be input and stored on the management device 3 side in advance, and the management device 3 may select the construction data and the corresponding data from the boring survey and transmit them to the manager terminal 4 in response to an instruction from the manager terminal 4.

The instantaneous current value 531 and the integral current value 532 are displayed in graph form using the construction data transmitted from the management device 3. The eccentricity amount 541 and the tilt amount 542 may be displayed in graph form using data transmitted as part of the construction data from the management device 3, or may be displayed in graph form using measurement data transmitted from the measurement device 2.

As shown in Figure 5, by displaying each piece of data as a graph showing the time series data trends for each unit depth, the excavation status can be displayed visually in an easy-to-read manner, allowing managers to grasp the status at a glance.

The management screen 50 may be created by an application in the administrator terminal 4 from data acquired from the terminal, or a viewable management application screen may be opened by accessing a specific administrator URL (Uniform Resource Locator) from the administrator terminal 4. On the management screen 50, the administrator may give instructions such as pressing or touching a button to perform various processes such as viewing construction data other than the data shown in FIG. 5 and creating graphs. The management application screen present at the administrator URL is assumed to be written in HTML (Hyper Text Markup Language), and is assumed to be in a format that can be operated without relying on specific software and applications if a browser function is available.

Furthermore, a push notification may be sent to the administrator terminal 4 when the eccentricity index value becomes greater than the threshold value. For example, information urging the user to pay close attention to the excavation depth status, such as "Approaching the supporting layer," may be displayed in a separate window, such as a pop-up display, on the management screen 50. The administrator holding the administrator terminal 4 may be notified of the excavation depth status by voice, sound, vibration, etc. This allows the administrator to realize efficient management by simply checking the administrator terminal 4 when a specific event occurs, without having to constantly be concerned about the construction status.

Further, the shape of the pinhole can be drawn based on the eccentricity index value. An example of a pinhole shape diagram generated based on the eccentricity index value will be described with reference to FIG.
The pile hole shape diagram shown in Fig. 6 is a shape diagram of a pile hole obtained by, for example, drawing the eccentricity index value for each unit depth from the start of excavation to the current excavation depth as the diameter of the pile hole on the manager terminal 4. In addition, information on intentionally widening the pile hole, such as enlarged excavation, may be reflected in the pile hole shape. For example, in the range 61, the amount of eccentricity was large in the corresponding stratum, so it is easy to visually grasp that the pile hole has been widened.
In this way, by displaying the pile hole shape on the manager terminal 4 based on the measurement data of the eccentricity and the inclination, it is possible to prove that a vertical pile hole has been excavated from the excavation stage.

Next, the operation of the management device 3 during the driving of the piles will be described with reference to the flowchart of FIG.
In step S701, the calculation unit 312 measures the tip depth of the pile when the pile is driven in. The tip depth may be measured using, for example, a distance sensor that identifies the position of the tip of the pile, or the tip depth may be determined by measuring the amount of wire feed, or the depth information may be read directly using a tape measure or the like.

In step S702, the determination unit 313 determines whether the pile hole has a diameter equal to or greater than a threshold value in the stratum corresponding to the tip depth. Specifically, it determines whether the amount of eccentricity is equal to or greater than a threshold value in the stratum corresponding to the tip depth. If the amount of eccentricity is equal to or greater than the threshold value, it is assumed that an area larger than the specified pile hole has been excavated, so it is determined that the pile hole has a diameter equal to or greater than the threshold value, and the process proceeds to step S703. On the other hand, if the amount of eccentricity is less than the threshold value, it is assumed that the diameter is the specified pile hole, so the process proceeds to step S704.

In step S703, the notification unit 315 issues a push notification and outputs an alert. For example, when the administrator terminal 4 displays a pile hole shape as shown in FIG. 6, the alert may highlight the pile hole shape portion (range 61) in the range corresponding to the tip depth by surrounding it, highlighting it, blinking, or the like. In addition, alerts by voice, sound, and vibration may be combined. This makes it possible to call attention to the fact that the pile hole is in a wide stratum when erecting the pile so as not to tilt it.

In step S704, it is assumed that the installation of the piles is completed.
In step S705, the determination unit 313 determines whether or not there is a pile to be erected next. Specifically, the determination unit 313 may determine whether or not all piles have been erected by referring to the number of piles input in advance. If there is a pile, the process returns to step S701 and the same process is repeated. If there is no pile, that is, if all piles have been erected, the process ends.

In the above-described embodiment, an example is shown in which the measurement data is measured by the measuring device 2, but this is not limited thereto. A three-axis gyro sensor or the like may be mounted on the rod or the drilling head, and the eccentricity amount, tilt amount, and drilling depth may be measured using the gyro sensor.

When the results of the above-mentioned determination of whether the supporting layer has been reached (depth of the supporting layer, measurement data up to reaching the supporting layer, and time-series data of construction data) are accumulated at the same construction site, the management device 3 can grasp the changes in the strata at the construction site and the depth and inclination of the supporting layer. Therefore, the management device 3 can predict the supporting layer when excavating at the same site.

In addition, if the results of the assessment of whether the supporting layer has been reached have been accumulated in advance at a nearby construction site, the management device 3 can predict the supporting layer based on the assessment results at the nearby construction site by referring to the measurement data and construction data at the same depth at the construction site.

According to the embodiment described above, the arrival at the supporting layer can be managed based on the eccentricity index value and/or the amount of inclination without variation in judgment due to the manager's experience or individual differences. In addition to the eccentricity index value and the amount of inclination, the arrival at the supporting layer can be comprehensively judged by combining construction data such as instantaneous current value and integral current value, and boring survey data such as columnar diagram and N value, thereby further improving the accuracy of the judgment.
Furthermore, the measurement data regarding the amount of eccentricity and the amount of tilt, and the construction data including the current value are managed in a unified manner by a management device or an administrator terminal, thereby making data management more efficient.
Furthermore, the changes in the strata can be visualized by displaying the trends in time-series data such as the amount of eccentricity, eccentricity index value, and amount of tilt in graphs using cycle times, etc., and displaying them in parallel with the current value and integrated current value, etc.

The instructions shown in the processing procedures shown in the above-described embodiments can be executed based on a software program. A general-purpose computer system can store this program in advance on a recording medium, and by reading the stored program, it is possible to obtain the same effect as that of the above-described identification device. Furthermore, the recording medium in this embodiment is not limited to a medium independent of the computer or embedded system, but also includes a recording medium that stores or temporarily stores a program downloaded from a LAN, the Internet, etc.

1...pile driver, 2...measuring device, 3...management device, 4...administrator terminal, 5...viewer terminal, 31...processing circuit, 32...storage unit, 33...communication interface, 50...management screen, 51...columnar diagram, 52...N value, 53...current value, 54...measured value, 61...range, 311...data acquisition unit, 312...calculation unit, 313...determination unit, 314...generation unit, 315...notification unit, 531...instantaneous current value, 532...integral current value, 541...eccentricity amount, 542...tilt amount.

Claims (11)

an acquisition unit that acquires an amount of eccentricity from a drilling core of the drilling device and an excavation depth measured during ground excavation;
a calculation unit that calculates an eccentricity index value of the drilling device for each unit depth using the statistical value of the eccentricity amount;
a determination unit that determines whether or not the support layer has been reached by using the eccentricity index value;
A management device comprising: The management device according to claim 1, wherein the determination unit determines that the support layer has been reached if the eccentricity index value at the first depth is greater than the eccentricity index value at a second depth that is shallower than the first depth. The management device according to claim 1 or claim 2, wherein the eccentricity index value is an average eccentricity amount or an integral eccentricity amount. The acquisition unit acquires an inclination amount of the excavation device measured during the ground excavation,
The management device according to claim 1 , wherein the determining unit further uses the amount of inclination to determine whether or not the support layer has been reached. The acquisition unit acquires the amount of eccentricity for each unit depth,
The management device according to claim 1 , further comprising a generating unit configured to generate graph data of at least one of the amount of eccentricity and the eccentricity index value for each unit depth. The management device according to any one of claims 1 to 5, further comprising a notification unit that issues a push notification when the eccentricity index value is equal to or greater than a threshold value. The management device according to any one of claims 1 to 4, further comprising a generating unit that generates pile hole shape data that indicates the shape of the pile hole, reflecting the diameter of the pile hole from the ground surface to the current excavation depth, based on the eccentricity index value for each unit depth. The management device according to claim 7 further comprises a notification unit that issues a push notification when the diameter of the pile hole in the pile hole shape data is equal to or greater than a threshold value when the pile is being driven. The management device according to any one of claims 1 to 8, wherein the unit depth is variable depending on at least one of the excavation layer and the excavation depth. Computer,
An acquisition means for acquiring an amount of eccentricity from a drilling core of an excavation device and an excavation depth measured during ground excavation;
a calculation means for calculating an eccentricity index value of the drilling device for each unit depth using the statistical value of the eccentricity amount;
a management program for causing the eccentricity index value to function as a determination means for determining whether or not the support layer has been reached, using the eccentricity index value; A management system including a measuring device, a management device mounted on a pile driver, and an administrator terminal,
The measuring device measures an amount of eccentricity of an excavation device from a core of an excavation during ground excavation,
The management device measures an excavation depth during the ground excavation,
The administrator terminal,
an acquisition unit that acquires the eccentricity amount from the measurement device and the excavation depth from the management device;
a calculation unit that calculates an eccentricity index value of the drilling device for each unit depth using the statistical value of the eccentricity amount;
a determination unit that determines whether or not the support layer has been reached by using the eccentricity index value.