Sand discharge control device, sand pile forming system, and sand discharge control method

Abstract

In a method of constructing sand piles in the ground to compact the ground, a sand discharge control device capable of appropriately controlling the amount of sand discharged is provided. 【Solution means】The sand discharge control device 100 includes a storage unit 120 in which construction pattern information is stored. Further, the sand discharge control device 100 includes a construction information acquisition unit 111 that acquires construction information including information regarding at least the depth of the casing pipe and the amount of sand introduced into the casing pipe. Further, the sand discharge control device 100 includes a pattern determination unit 112 that determines which construction pattern among a plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. Furthermore, the sand discharge control device 100 includes a control information generation unit that generates control information, and a discharge control processing unit 114 that controls the internal pressure of the casing pipe and the discharge of air based on the control information.

Description

Technical Field

[0001] The present invention relates to a sand discharge control device, a sand pile forming system, and a sand discharge control method.

Background Art

[0002] Conventionally, in a construction method of compacting the surrounding ground by forming sand piles in the ground, a technique for penetrating a casing filled with granular materials such as sand and crushed stones to a predetermined depth and appropriately discharging the materials in the casing into the ground has been proposed. Patent Document 1 discloses a method for discharging sand in a reverse impact type compressed sand pile driving method. The sand discharge method disclosed in Patent Document 1 efficiently discharges sand by applying an air pressure to the sand in the casing and by ejecting an air jet from the side of the tip of the casing.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a construction method of forming sand piles in the ground to compact the ground, the amount of sand to be discharged from the casing needs to be adjusted to an appropriate amount according to the material sand used and the ground conditions. On the other hand, conventionally, a skilled operator has adjusted the amount of sand to be discharged by operating the pressure of the casing to be raised and the air jet. Therefore, there is a need for a device and a system that can adjust the amount of sand to be discharged to an appropriate amount without relying on the skills of a skilled operator.

[0005] The present invention has been made in view of the problems of such prior art. The object of the present invention is to provide a sand discharge control device capable of appropriately controlling the amount of sand discharged in a method of constructing sand piles in the ground to compact the ground.

Means for Solving the Problems

[0006] The sand discharge control device according to an aspect of the present invention is a sand discharge control device that controls the discharge of sand for constructing a columnar object in a method of compacting the ground by constructing a columnar object in the ground, and includes a storage unit storing construction pattern information indicating a plurality of construction patterns determined based on the depth of the lower end side tip portion in the vertical direction of a casing pipe penetrating into the ground and the amount of sand removed indicating the amount of sand discharged from the casing pipe, a construction information acquisition unit that acquires construction information which is information used in the method and includes information related to at least the depth and the amount of sand input into the casing pipe, a pattern determination unit that determines which construction pattern among the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand, a control information generation unit that generates control information based on the result determined by the pattern determination unit, and a discharge control processing unit that controls the internal pressure of the casing pipe and the discharge of air based on the control information.

[0007] A sand pile construction system according to another aspect of the present invention includes a compaction pile construction device that compacts the ground by constructing columnar objects in the ground, a management instrument that acquires construction data used in the compaction pile construction device, and a sand discharge control device that controls the discharge of sand for constructing the columnar objects. The sand discharge control device includes a storage unit storing construction pattern information indicating a plurality of construction patterns determined based on the depth of the lower end side tip portion in the vertical direction of a casing pipe penetrating into the ground and the amount of sand discharged from the casing pipe, a construction information acquisition unit that acquires construction information that is information used in the compaction pile construction device and includes information related to at least the depth and the amount of sand input into the casing pipe, a pattern determination unit that determines which construction pattern among the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand, a control information generation unit that generates control information based on the result determined by the pattern determination unit, and a discharge control processing unit that controls the internal pressure of the casing pipe and the discharge of air based on the control information.

[0008] A sand discharge control method according to another aspect of the present invention is executed by a computer and is a sand discharge control method for controlling the discharge of sand for constructing columnar objects in a construction method of compacting the ground by constructing columnar objects in the ground. The method includes acquiring construction information that is information used in the construction method and includes information related to at least the depth of the lower end side tip portion in the vertical direction of a casing pipe penetrating into the ground and the amount of sand input into the casing pipe, determining which construction pattern among a plurality of construction patterns determined based on the depth of the casing pipe and the amount of sand extracted indicating the amount of sand discharged from the casing pipe the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand, generating control information based on the determined result, and controlling the internal pressure of the casing pipe and the discharge of air based on the control information.

Advantages of the Invention

[0009] According to the present invention, in a construction method of constructing sand piles in the ground to compact the ground, a sand discharge control device capable of appropriately controlling the amount of discharged sand can be provided.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3A

Figure 3B

Figure 4

Figure 5

Figure 6

Figure 7A

Figure 7B

Figure 8

Embodiments for Carrying Out the Invention

[0011] Hereinafter, the sand discharge control device 100 and the sand pile construction system 10 according to this embodiment will be described in detail with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for the convenience of explanation and may be different from the actual ratios.

[0012] (Configuration of Sand Pile Construction System 10) FIG. 1 is a diagram for explaining the construction method to which the sand pile construction system 10 according to the present embodiment is applied. The construction method to which the sand pile construction system 10 is applied in the present embodiment is a method of compacting the ground by forming columnar objects in the ground using a compaction pile construction device 20.

[0013] The method of compacting the ground by forming columnar objects in the ground corresponds to, for example, the sand compaction method or the static compaction method in which the diameter of the pile body is expanded by pushing back the granular material discharged into the ground by the casing, and the surrounding ground is compacted. Further, the construction method may be the pressure injection type static compaction method in which a material obtained by mixing a fluidizing agent or cement into the granular material is pressure-injected into the ground, or the compaction grouting method.

[0014] The compaction pile construction device 20 according to the present embodiment is a construction machine including a hopper 30, a lifting device 31, a rotary drive device 32, and a casing pipe 33. Further, the compaction pile construction device 20 includes a sand discharge control device 100. Details of the sand discharge control device 100 will be described later.

[0015] The hopper 30 is provided on the upper end side of the casing pipe 33 and is a part for charging granular material into the casing pipe 33. In the present embodiment, the granular material is, for example, sand. The lifting device 31 has a lifting motor and a power transmission means for transmitting the rotational force of the lifting motor to the casing pipe 33, and raises and lowers the casing pipe 33 into the ground. The rotary drive device 32 includes a rotary motor and is a mechanism for rotating the casing pipe 33 in a certain direction.

[0016] The compaction pile construction device 20 penetrates the casing pipe 33 to a predetermined depth in the ground by the lifting device 31 and the rotary drive device 32. Further, the compaction pile construction device 20 discharges the granular material from the lower end of the casing pipe 33, and repeats the pulling-out process and the re-penetration of the casing pipe 33 to compact the discharged granular material.

[0017] In addition, the compaction pile construction device 20 is equipped with management instruments and collects construction data. The data collected by the management instruments are the depth (GL), the amount of sand (SL), and the internal pressure of the casing pipe 33. The depth is data indicating the position of the lower end tip of the casing pipe 33 in the vertical direction. The depth is acquired by a depth gauge (depth sensor) provided at the lower end tip of the casing pipe 33. Also, the amount of sand indicates the amount of sand input into the casing pipe 33 and is indicated by the length from the lower end tip of the casing pipe 33. For example, the amount of sand is acquired by a sand surface gauge.

[0018] In addition, the data collected by the management instruments includes data indicating the states (presence or absence of implementation) of jetting, air supply, and exhaust. The jetting is air jetted by a device that jets air inside the tip of the casing pipe 33, and is air for loosening the sand at the tip to make it easier to escape.

[0019] Figure 2 is a diagram for the construction method. In step A in Figure 2, the compaction pile construction device 20 places the casing pipe 33 at a predetermined position and inputs a certain amount of sand through the hopper 30. In step B, the compaction pile construction device 20 penetrates the casing pipe 33 into the ground while rotating it by the rotation drive device 32. In step C, the compaction pile construction device 20 penetrates to a predetermined depth. In step D, the compaction pile construction device 20 discharges the sand inside the casing pipe 33 while pulling up the casing pipe 33 to a specified height. In step E, the compaction pile construction device 20 drives the casing pipe 33 back and compacts the discharged sand and the surrounding ground. In step F, the compaction pile construction device 20 constructs the compaction pile by wave construction that repeatedly and finely repeats steps D and E to expand the diameter.

[0020] FIG. 3A is a diagram for explaining the timing of pulling out and compacting the casing pipe 33 by driving sand piles using the compaction pile construction device 20. As shown in FIG. 3A, in one cycle of "pull out" and "compact", the compaction pile construction device 20 pulls out the casing pipe 33 vertically by 50 cm at a predetermined set pressure during the first "pull out". In this "pull out" phase, as shown in FIG. 3A, the jet is turned on and off.

[0021] Also, in the "compact" phase, the sand is compacted vertically by 30 cm by the casing pipe 33. In the above-described wave construction, this one cycle of "pull out" and "compact" is repeatedly performed.

[0022] FIG. 3B is a diagram for explaining the changes in each data in the driving of sand piles using the compaction pile construction device 20. In the example shown in FIG. 3B, after the start of construction at time T1, the casing pipe 33 penetrates into the ground. Thereafter, after time T2, "pull out" and "compact" (hammering back) of the casing pipe 33 are performed, and accordingly, the amount of sand (SL) decreases. Also, at the timing around time T3 shown in FIG. 3B, sand is added, and the construction by "pull out" and "compact" of the casing pipe 33 is repeated. Also, the jet, air supply, and exhaust are performed as shown in FIG. 3B, and the pressure inside the pipe changes.

[0023] The sand discharge control device 100 provided in the sand pile construction system 10 according to the present embodiment is a device that acquires construction data and controls the sand discharge amount to an appropriate amount in the above-described ground compaction method. Next, the details of this sand discharge control device 100 will be described.

[0024] (Configuration of the sand discharge control device 100) FIG. 4 is a block diagram showing the configuration of the sand discharge control device 100 according to the present embodiment. As shown in FIG. 4, the sand discharge control device 100 may be configured as a system including a general-purpose computer including a control unit 110 (CPU), a storage unit 120 (memory), an input / output IF 130 (Interface), and a communication IF 140. In this case, a computer program for causing the computer to function as the sand discharge control device 100 may be installed in the computer. By executing the computer program, the computer functions as a plurality of information processing circuits included in the sand discharge control device 100.

[0025] The sand discharge control device 100 is provided at a predetermined location that can communicate with the compaction pile construction device 20. For example, the sand discharge control device 100 may be provided near the driver's seat of the compaction pile construction device 20.

[0026] In the present embodiment, an example is shown in which a plurality of information processing functions included in the sand discharge control device 100 are realized by software. The sand discharge control device 100 functions as a plurality of information processing circuits included in the sand discharge control device 100 by executing a computer program.

[0027] As another configuration, the sand discharge control device 100 can also configure the information processing function by a dedicated hardware for executing each information processing function and by a system LSI (Large Scale Integration) or the like. Further, the sand discharge control device 100 may configure a system with a plurality of information processing functions by individual hardware.

[0028] The control unit 110 operates based on a program (not shown) stored in the storage unit 120 and executes each function included in the sand discharge control device 100. Note that the program is not limited to the form stored in the storage unit 120, and may be configured to be stored in a ROM or the like (not shown) in the sand discharge control device 100, for example.

[0029] As shown in FIG. 5, the storage unit 120 stores, as data, the information stored in the construction information DB 121 (Data Base), the construction result information DB 122, and the construction pattern information DB 123 in the storage unit 120.

[0030] Also, as described above, the storage unit 120 may store programs for each function executed in the control unit 110. Note that the information and programs stored in the storage unit 120 may be configured as areas physically or logically divided in one storage device. Alternatively, the storage unit 120 for each data may be provided in a plurality of physically different storage devices.

[0031] The input / output IF 130 is an interface for transmitting and receiving data between the sand discharge control device 100 and the outside. Also, the input / output IF 130 may be an interface for transmitting and receiving information to be exchanged with a user (construction manager). The input / output IF 130 includes, for example, an input IF and an output IF (not shown).

[0032] For example, the input / output IF 130 is connected to the above-described management instrument, acquires information regarding depth, sand amount, in-pipe pressure, jet, air supply, and exhaust as construction data, and sends the acquired data to the control unit 110.

[0033] Also, the input IF in the input / output IF 130 has an interface function for inputting various information by a user (construction manager), and information may be input from outside the sand discharge control device 100. Information is input to the input IF by a user through, for example, a keyboard, a mouse, a touch panel, a trackball, and a voice recognition device connected to the sand discharge control device 100. Also, the input IF can input information as a data input terminal for inputting data from an external storage device (not shown) or the like.

[0034] Furthermore, the output IF in the input / output IF130 can cause a display device such as a monitor (not shown) connected to the sand discharge control device 100 to display construction information, construction result information, etc. (see FIGS. 7A to 7B) described later. The display device is, for example, a display device, a projector device, or the like.

[0035] The communication IF140 is an interface for enabling mutual communication between, for example, the sand discharge control device 100 and an external device.

[0036] (Functional configuration of the sand discharge control device 100) FIG. 5 is a block diagram showing the functional configuration of the sand discharge control device 100 according to the present embodiment. As shown in FIG. 5, the control unit 110 of the sand discharge control device 100 includes a construction information acquisition unit 111, a pattern determination unit 112, a control information generation unit 113, a discharge control processing unit 114, and a construction result acquisition unit 115 as functions.

[0037] The construction information acquisition unit 111 acquires construction information that is information used in the method of compacting the ground by the compacted pile construction device 20 and includes at least information regarding the depth (GL) of the lower end side tip of the casing pipe 33 and the amount of sand (SL). Specifically, the construction information acquisition unit 111 acquires, via a management instrument, the depth of the tip of the casing pipe 33 and the amount of sand indicated by the height from the tip of the casing pipe 33. Further, the construction information acquisition unit 111 stores the acquired construction information in the construction information DB121.

[0038] The pattern determination unit 112 determines which construction pattern among a plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. The construction pattern information is information indicating a plurality of construction patterns determined based on the depth of the lower end side tip in the vertical direction of the casing pipe 33 penetrating into the ground and the amount of sand removed (ΔSL) indicating the amount of sand discharged from the casing pipe 33. Further, the construction pattern information is stored in advance in the construction pattern information DB123 of the storage unit 120.

[0039] The pattern determination unit 112 determines the construction pattern based on the depth acquired by the management instrument and the amount of sand. Note that the sand extraction amount (ΔSL) is calculated by the difference between the amount of sand in the previous step and the current amount of sand. Also, the sand extraction amount (ΔSL) at the time of construction disclosure uses a predetermined initial value (default value). For example, the initial value of the sand extraction amount (ΔSL) may be 70 cm. Note that the initial value of the sand extraction amount (ΔSL) is not limited to 70 cm, and a predetermined value of 60 cm or more and less than 90 cm may be used.

[0040] FIG. 6 is a diagram for explaining each construction pattern of the construction pattern information in the sand pile construction system 10 according to the present embodiment. In the example shown in FIG. 6, three sections are defined with -5 m and -10 m as thresholds for the depth. Also, for the sand extraction amount, four sections are defined with the first threshold, the second threshold, and the third threshold as thresholds. For example, values such as 90 cm, 60 cm, and 30 cm may be applied to the first threshold, the second threshold, and the third threshold. Also, the first threshold, the second threshold, and the third threshold are not limited to the values of 90 cm, 60 cm, and 30 cm, and values larger or smaller than 90 cm, 60 cm, and 30 cm, respectively, may be applied.

[0041] Note that in the example of FIG. 6, "Pattern No. 1" indicates the pattern when the sand extraction amount is equal to or greater than the first threshold. Also, "Pattern No. 2" indicates the pattern when the sand extraction amount is equal to or greater than the second threshold and less than the first threshold. Also, "Pattern No. 3" indicates the pattern when the sand extraction amount is equal to or greater than the third threshold and less than the second threshold. Further, "Pattern No. 4" indicates the pattern when it is less than the third threshold. Note that in the present embodiment, "Pattern No. 2" shown hatched in FIG. 6 corresponds to an appropriate pattern as the sand extraction amount. Also, the appropriate pattern as the sand extraction amount corresponds to the target construction pattern. Also, the range of the predetermined threshold corresponds to the sand extraction amount being equal to or greater than the second threshold and less than the first threshold.

[0042] Note that the thresholds for the depth and the sand extraction amount in the construction pattern information can be set to arbitrary values by the user (administrator).

[0043] The control information generation unit 113 generates control information based on the result determined by the pattern determination unit 112. Specifically, the control information generation unit 113 generates control information so that the sand removal amount becomes an appropriate value at the corresponding depth. In the present embodiment, the appropriate sand removal amount corresponds to "Pattern No. 2" shown in FIG. 6. Also, the construction pattern for this appropriate sand removal amount corresponds to the target construction pattern.

[0044] That is, when the determined result is "Pattern No. 1" shown in FIG. 6, the control information generation unit 113 generates control information so that the sand removal amount (ΔSL) decreases at the corresponding depth. For example, as control information for decreasing the sand removal amount (ΔSL), there are turning off the jet, stopping the exhaust, stopping the air supply, and the like.

[0045] Further, when the determined result is "Pattern No. 3" or "Pattern No. 4" shown in FIG. 6, the control information generation unit 113 generates control information so that the sand removal amount (ΔSL) increases at the corresponding depth. For example, as control information for increasing the sand removal amount (ΔSL), there are turning on the jet, turning on the exhaust, turning on the air supply, and the like.

[0046] Furthermore, when the determined result is "Pattern No. 2", which is the appropriate pattern shown in FIG. 6, the control information generation unit 113 generates control information so that the current sand removal amount (ΔSL) can be maintained at the corresponding depth. For example, as control information for maintaining the sand removal amount (ΔSL), the control information generation unit 113 generates control information so that the jet, exhaust, and air supply are maintained as the current control information. FIG. 7A is a diagram showing an example of control information in pulling and tightening.

[0047] The control information generated by the control information generation unit 113 may be configured to store, in advance, the control information for the corresponding depth and sand removal amount in the storage unit 120 and output the control information determined by the depth and sand removal amount. For example, in the example shown in FIG. 6, control information corresponding to each of the 3×4 = 12 construction patterns, as shown in a table of 3 patterns for the depth and 4 patterns for the sand removal amount, may be stored in the storage unit 120 in advance. That is, the control information generation unit 113 may generate control information by performing a process of selecting and outputting the control information corresponding to the construction pattern determined by the depth and sand removal amount.

[0048] Further, the control information generation unit 113 may generate control information based on information statistically obtained from past construction data. Thereby, the sand discharge control device 100 can control an appropriate sand discharge amount by using past data. For example, based on information statistically obtained from past construction data, a total of 12 patterns of 3 patterns of depth × 4 patterns of sand removal amount may be stored in the storage unit 120 in advance and output (generated) according to the depth and sand removal amount.

[0049] Further, the control information generation unit 113 may generate control information based on information obtained by machine learning using past construction data. Thereby, the sand discharge control device 100 can reflect more precise control that cannot be recognized only from the information obtained from the data, and can control a more appropriate sand discharge amount.

[0050] The discharge control processing unit 114 controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information. More specifically, the discharge control processing unit 114 controls jetting, air supply, and / or exhaust based on the control information generated by the control information generation unit 113.

[0051] The construction result acquisition unit 115 acquires the construction result. Specifically, the construction result acquisition unit 115 acquires information regarding how much sand has escaped during the construction. Further, the construction result acquisition unit 115 stores the acquired construction result in the construction result information DB 122.

[0052] Based on this construction result, the sand discharge control device 100 can realize an appropriate amount of sand extraction by controlling the next construction. Also, the user (administrator) of the sand pile construction system 10 can determine whether appropriate construction is being carried out by checking the construction result.

[0053] FIG. 7B is a diagram showing the construction state based on the construction result acquired by the construction result acquisition unit 115. For example, the user can determine whether appropriate construction is being carried out by checking the construction state shown in FIG. 7B.

[0054] (Outline of the processing flow of the sand discharge control device 100) Next, the flow of processing in the sand discharge control device 100 is shown using the flowchart shown in FIG. 8. A series of operations of the sand discharge control device 100 shown in the flowchart of FIG. 8 starts when the sand discharge control device 100 is activated and ends when the work is completed. Also, the flowchart shown in FIG. 8 ends due to a power-off or an interrupt of the end of processing. Further, in the following description of the flowchart, the same content as that described in the above description of the sand pile construction system 10 and the sand discharge control device 100 is described in an omitted or simplified manner.

[0055] In step S801, the construction information acquisition unit 111 acquires construction information that is information used in the method of compacting the ground by the compaction pile construction device 20 and includes at least information regarding the depth (GL) of the tip of the casing pipe 33 and the amount of sand. The construction information acquisition unit 111 acquires the depth of the tip of the casing pipe 33 and the amount of sand via the management instrument. Further, the construction information acquisition unit 111 stores the acquired construction information in the construction information DB 121. Thereafter, the process proceeds to step S802.

[0056] In step S802, the pattern determination unit 112 determines which construction pattern among a plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. The construction pattern information is construction pattern information indicating a plurality of construction patterns determined by the depth and the amount of sand extraction, and is information stored in the storage unit 120 in advance. Then, the process proceeds to step S803.

[0057] In step S803, the control information generation unit 113 generates control information based on the result determined by the pattern determination unit 112. Specifically, the control information generation unit 113 generates control information so that the amount of sand extraction becomes an appropriate value. For example, the control information generation unit 113 may generate control information by performing a process of selecting and outputting control information corresponding to the construction pattern determined by the depth and the amount of sand extraction. In the present embodiment, the appropriate amount of sand extraction corresponds to "Pattern No. 2" shown in FIG. 6. Also, the construction pattern for this appropriate amount of sand extraction corresponds to the target construction pattern. Then, the process proceeds to step S804.

[0058] In step S804, the discharge control processing unit 114 controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information. More specifically, the discharge control processing unit 114 controls jetting, air supply, and / or exhaust based on the control information generated by the control information generation unit 113. Then, the process proceeds to step S805.

[0059] In step S805, the construction result acquisition unit 115 acquires the construction result. Specifically, the construction result acquisition unit 115 acquires information regarding how much sand has been extracted during the construction. Also, the construction result acquisition unit 115 stores the acquired construction result in the construction result information DB122. Then, the process proceeds to step S806.

[0060] In step S806, the control unit 110 determines whether the construction process has ended. If, in step S806, the control unit 110 determines that the construction process has ended (step S806: YES), the process ends. On the other hand, if, in step S806, the control unit 110 determines that the construction process has not ended (step S806: NO), the process returns to step S802, and the process from step S802 is repeatedly executed.

[0061] As described above, the sand discharge control device 100 is a sand discharge control device 100 that controls the discharge of sand for forming a columnar object in the ground in a method of compacting the ground by forming a columnar object in the ground. The sand discharge control device 100 includes a storage unit 120 in which construction pattern information is stored. The construction pattern information is information indicating a plurality of construction patterns determined based on the depth of the lower end side tip portion of the casing pipe 33 penetrating into the ground and the amount of sand discharged from the casing pipe 33 (sand extraction amount). Further, the sand discharge control device 100 includes a construction information acquisition unit 111 that acquires construction information that is information used in the construction method and includes information related to at least the depth and the amount of sand input into the casing pipe 33. Further, the sand discharge control device 100 includes a pattern determination unit 112 that determines which construction pattern among the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. Further, the sand discharge control device 100 includes a control information generation unit 113 that generates control information based on the result determined by the pattern determination unit 112. Furthermore, the sand discharge control device 100 includes a discharge control processing unit 114 that controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0062] Thereby, the sand discharge control device 100 according to the present embodiment can appropriately control the amount of sand to be discharged in a method of forming a sand pile in the ground and compacting the ground.

[0063] Further, among the plurality of construction patterns of the sand discharge control device 100 according to the present embodiment, a construction pattern in which the amount of sand extraction is within a predetermined threshold range may be defined as the target construction pattern. Further, the control information generation unit 113 may generate control information such that the construction pattern becomes the target construction pattern. Thereby, the sand discharge control device 100 can appropriately control the amount of sand discharged.

[0064] Further, the control information generation unit 113 of the sand discharge control device 100 according to the present embodiment may generate control information based on information statistically obtained from past construction data. Thereby, the sand discharge control device 100 can control a more appropriate sand discharge amount by using past data.

[0065] Further, the control information generation unit 113 of the sand discharge control device 100 according to the present embodiment may generate control information based on information obtained by machine learning using past construction data. Thereby, the sand discharge control device 100 can reflect more precise control that cannot be recognized only by the information obtained from the data by using the information obtained by machine learning, and can control a more appropriate sand discharge amount.

[0066] Further, the control information of the sand discharge control device 100 according to the present embodiment may include information regarding the internal pipe pressure of the casing pipe 33, jet, air supply, and / or exhaust. Thereby, the sand discharge control device 100 can control more precisely regarding the control of the sand discharge amount, and can appropriately control the amount of sand discharged.

[0067] (Other Embodiments) Although the embodiments have been described in detail with reference to the drawings, the present embodiment is not limited to the content described in the above embodiments. Further, the constituent elements described above include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the configurations described above can be combined as appropriate. Also, various omissions, substitutions, or changes in the configuration can be made without departing from the gist of the embodiment.

[0068] In the sand discharge control device 100 according to the above-described embodiment, the control in the case of performing wave construction has been shown. However, the embodiment of the sand discharge control device 100 is not limited to this configuration. For example, the sand discharge control device 100 may be applied to pre-construction preparation processing, preparation processing in the case of adding sand, and / or processing such as drain processing. The drain processing is a construction process for a shallow part of the ground, and corresponds to a process of discharging sand without performing a backfill process. For example, even in the case of preparation processing or drain processing, control information may be generated based on the construction information acquired by the construction information acquisition unit 111. In the preparation processing and the drain processing, the construction information acquired by the construction information acquisition unit 111 is not limited to the depth and the amount of sand, and may be the internal pressure of the casing pipe 33 or information on the presence or absence of air discharge processing. Thereby, the sand discharge control device 100 can control an appropriate sand discharge amount for preparation processing and drain processing other than wave construction, and appropriate sand discharge processing can be performed as the entire construction process.

[0069] Further, a computer program (sand discharge control program) for causing a computer to execute the processing (sand discharge control method) in the sand discharge control device 100 described above, and a computer-readable recording medium on which the program is recorded are included in the scope of the present embodiment. Here, the type of the computer-readable recording medium is arbitrary. Further, the computer program is not limited to being recorded on the above-described recording medium, and may be transmitted via an electric communication line, a wireless or wired communication line, a network represented by the Internet, or the like.

[0070] (Function and effect, etc.) The function and effect according to the present embodiment will be described below.

[0071] (1) The sand discharge control device 100 according to the first aspect of the present embodiment is a sand discharge control device 100 that controls the discharge of sand for forming a columnar object in the ground in a method of compacting the ground by forming a columnar object in the ground. The sand discharge control device 100 includes a storage unit 120 in which construction pattern information is stored. The construction pattern information is information indicating a plurality of construction patterns determined based on the depth of the lower end side tip portion of the casing pipe 33 penetrating into the ground and the amount of sand removed, which indicates the amount of sand discharged from the casing pipe 33. Further, the sand discharge control device 100 includes a construction information acquisition unit 111 that acquires construction information, which is information used in the construction method and includes information related to at least the depth and the amount of sand introduced into the casing pipe 33. Further, the sand discharge control device 100 includes a pattern determination unit 112 that determines which construction pattern among the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. Further, the sand discharge control device 100 includes a control information generation unit 113 that generates control information based on the result determined by the pattern determination unit 112. Further, the sand discharge control device 100 includes a discharge control processing unit 114 that controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0072] With this configuration, the sand discharge control device 100 can appropriately control the amount of sand to be discharged in a method of forming a sand pile in the ground and compacting the ground.

[0073] (2) Among the plurality of construction patterns of the sand discharge control device 100 according to the second aspect of the present embodiment, a construction pattern in which the amount of sand removed is within a predetermined threshold range may be defined as the target construction pattern. Further, the control information generation unit 113 may generate control information such that the construction pattern becomes the target construction pattern.

[0074] With this configuration, the sand discharge control device 100 can appropriately control the amount of sand to be discharged.

[0075] (3) The control information generation unit 113 of the sand discharge control device 100 according to the third aspect of the present embodiment may generate control information based on information statistically obtained from past construction data.

[0076] With this configuration, the sand discharge control device 100 can control a more appropriate sand discharge amount by using past data.

[0077] (4) The control information generation unit 113 of the sand discharge control device 100 according to the fourth aspect of the present embodiment may generate control information based on information obtained by machine learning using past construction data.

[0078] With this configuration, the sand discharge control device 100 can reflect more precise control that cannot be recognized only from the information obtained from the data by using the information obtained by machine learning, and can control a more appropriate sand discharge amount.

[0079] (5) The control information of the sand discharge control device 100 according to the fifth aspect of the present embodiment may include information regarding the internal pipe pressure of the casing pipe 33, jet, air supply, and / or exhaust.

[0080] With this configuration, the sand discharge control device 100 can control more precisely regarding the control of the sand discharge amount, and can appropriately control the amount of sand to be discharged.

[0081] (6) The sand pile construction system 10 according to the sixth aspect of the present embodiment includes a compaction pile construction device 20 that compacts the ground by constructing columnar objects in the ground. The sand pile construction system 10 also includes a management instrument that acquires construction data used for the compaction pile construction device 20. Further, the sand pile construction system 10 includes a sand discharge control device 100 that controls the discharge of sand for constructing columnar objects. The sand discharge control device 100 has a storage unit 120 in which construction pattern information is stored. The construction pattern information is information indicating a plurality of construction patterns determined based on the depth of the lower end side tip portion of the casing pipe 33 penetrating into the ground and the amount of sand removed, which is the amount of sand discharged from the casing pipe 33. The sand discharge control device 100 also has a construction information acquisition unit 111 that acquires construction information that is information used for the compaction pile construction device 20 and includes information related to at least the depth and the amount of sand introduced into the casing pipe 33. The sand discharge control device 100 also has a pattern determination unit 112 that determines which construction pattern the construction state corresponds to among the plurality of construction patterns based on the construction pattern information, the depth, and the amount of sand. The sand discharge control device 100 also has a control information generation unit 113 that generates control information based on the result determined by the pattern determination unit 112. Further, the sand discharge control device 100 has a discharge control processing unit 114 that controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0082] With this configuration, the sand pile construction system 10 can appropriately control the amount of sand discharged in the method of constructing sand piles in the ground to compact the ground.

[0083] (7) The sand discharge control method according to the seventh aspect of the present embodiment is executed by a computer, and is a sand discharge control method for controlling the discharge of sand for forming a columnar object in the ground in a method of consolidating the ground by forming a columnar object in the ground. The sand discharge control method acquires construction information that is information used in the method and includes information regarding at least the depth of the lower end side tip of the casing pipe 33 penetrating into the ground and the amount of sand introduced into the casing pipe 33. Further, the sand discharge control method determines which construction pattern among a plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand. The construction pattern information is information indicating a plurality of construction patterns determined based on the depth of the casing pipe 33 and the amount of sand removed indicating the amount of sand discharged from the casing pipe 33. Further, the sand discharge control method generates control information based on the determined result. Furthermore, the sand discharge control method controls the internal pressure of the casing pipe 33 and the discharge of air based on the control information.

[0084] With this configuration, the sand discharge control method can appropriately control the amount of sand discharged in a method of forming sand piles in the ground to consolidate the ground.

Explanation of Signs

[0085] 10 Sand pile forming system 20 Consolidation pile forming device 30 Hopper 31 Lifting device 32 Rotation drive device 33 Casing pipe 100 Sand discharge control device 110 Control unit 111 Construction information acquisition unit 112 Pattern determination unit 113 Control information generation unit 114 Discharge control processing unit 115 Construction result acquisition unit 120 Storage unit 121 Construction information DB 122 Construction result information DB 123 Construction Pattern Information DB 130 Input / Output IF 140 Communication IF

Claims

1. In a method of compacting the ground by forming columnar bodies in the ground, a sand discharge control device for controlling the discharge of sand for forming the columnar bodies, a plurality of construction patterns determined based on the depth of the lower end tip portion in the vertical direction of a casing pipe penetrating into the ground and the amount of sand discharged from the casing pipe, and among the plurality of construction patterns, a target construction pattern in which the amount of sand discharged is within a range less than a first threshold value and equal to or more than a second threshold value, and a storage unit storing construction pattern information indicating the same; a construction information acquisition unit that acquires construction information that is information used in the method and includes information related to at least the depth and the amount of sand input into the casing pipe; a pattern determination unit that determines which of the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand; a control information generation unit that generates control information, which is information related to the internal pressure of the casing pipe, jet, air supply, and exhaust, based on the result determined by the pattern determination unit; an exhaust control processing unit that controls the internal pressure of the casing pipe and the discharge of air based on the control information; and comprising, when the construction pattern is such that the amount of sand discharged is equal to or more than the first threshold value, the control information generation unit generates the control information so that the amount of sand discharged decreases; a sand discharge control device, wherein when the construction pattern is such that the amount of sand discharged is less than the second threshold value, the control information generation unit generates the control information so that the amount of sand discharged increases.

2. When the construction pattern is such that the amount of sand discharged is equal to or more than the first threshold value, the control information generation unit generates the control information so that the amount of sand discharged decreases by turning off the jet, stopping the exhaust and / or stopping the air supply, when the construction pattern is such that the amount of sand discharged is less than the second threshold value, the control information generation unit generates the control information so that the amount of sand discharged increases by turning on the jet, turning on the exhaust and / or turning on the air supply, The sand discharge control device according to claim 1, wherein when the amount of sand discharged is the amount of sand discharged in the target construction pattern, the control information generation unit generates the control information so as to maintain the states of the jet, the exhaust, and the air supply.

3. The sand discharge control device according to claim 1 or 2, wherein the control information generation unit generates the control information based on information statistically obtained from past construction data.

4. The sand discharge control device according to claim 1 or 2, wherein the control information generation unit generates the control information based on information obtained by machine learning using past construction data.

5. A ground improvement pile construction device for compacting the ground by forming columnar objects in the ground, A management instrument for acquiring construction data used in the ground improvement pile construction device, A sand pile construction system including a sand discharge control device for controlling the discharge of sand for forming the columnar objects, The sand discharge control device includes: A storage unit storing construction pattern information indicating a plurality of construction patterns determined based on the depth of the lower end tip portion in the vertical direction of a casing pipe penetrating into the ground and the sand extraction amount indicating the amount of sand discharged from the casing pipe, and a target construction pattern among the plurality of construction patterns in which the sand extraction amount is within a range less than a first threshold value and equal to or more than a second threshold value; A construction information acquisition unit that acquires construction information that is information used in the ground improvement pile construction device and includes information related to at least the depth and the amount of sand introduced into the casing pipe; A pattern determination unit that determines which of the plurality of construction patterns the construction state corresponds to based on the construction pattern information, the depth, and the amount of sand; A control information generation unit that generates control information, which is information related to the internal pressure of the casing pipe, jet, air supply, and exhaust related to the casing pipe, based on the result determined by the pattern determination unit; An exhaust control processing unit that controls the internal pressure of the casing pipe and the discharge of air based on the control information; and has When the construction pattern is such that the sand extraction amount is equal to or more than the first threshold value, the control information generation unit generates the control information so as to reduce the sand extraction amount. When the construction pattern is such that the sand extraction amount is less than the second threshold value, the control information generation unit generates the control information so as to increase the sand extraction amount. A sand pile construction system.

6. A sand discharge control method for controlling the discharge of sand for forming columnar objects in a ground improvement method for compacting the ground by forming columnar objects in the ground, which is executed by a computer. Obtain construction information that includes information regarding at least the depth of the lower end side tip in the vertical direction of the casing pipe that penetrates into the ground and the amount of the sand that is put into the casing pipe. A plurality of construction patterns determined based on the depth of the casing pipe and the sand extraction amount indicating the amount of the sand discharged from the casing pipe, and target construction pattern information indicating, among the plurality of construction patterns, a target construction pattern in which the sand extraction amount is within a range less than a first threshold value and equal to or more than a second threshold value. Determine which of the plurality of construction patterns the construction state corresponds to based on the depth and the amount of the sand. When the construction pattern is such that the sand extraction amount is equal to or more than the first threshold value, generate control information, which is information regarding the internal pressure of the casing pipe, jet, air supply, and exhaust related to the casing pipe, so that the sand extraction amount decreases. When the construction pattern is such that the sand extraction amount is less than the second threshold value, generate the control information so that the sand extraction amount increases. A sand discharge control method for controlling the internal pressure of the casing pipe and the discharge of air based on the control information.

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