Measurement method, measuring device, adjustment method, and adjustment device

Abstract

The depth of the concrete top surface of cast-in-place piles is acquired unattended. [Solution] The measurement method is a method for measuring the top depth, which is the depth of the top surface of concrete driven into a pile hole of a cast-in-place pile filled with liquid. This measurement method includes: a first measurement step of automatically measuring a first depth, which is the distance between the top surface and the liquid surface or a reference surface having a predetermined distance from the liquid surface; a second measurement step of automatically measuring a second depth, which is the distance between the liquid surface or the reference surface and the pile head of the pile hole; and a top depth calculation step of obtaining the top depth by calculating the sum of the first depth and the second depth.

Description

Technical Field

[0001] The present invention relates to a measurement method and a measurement device for measuring the top-end depth, which is the depth of the top end of concrete placed in a pile hole of a cast-in-place pile filled with liquid, and an adjustment method and an adjustment device for adjusting the insertion length of a tremie pipe for placing concrete.

Background Art

[0002] A technique for confirming the depth of the top end of concrete placed in a pile hole of a cast-in-place pile is described in Patent Document 1. The concrete top-end confirmation device described in Patent Document 1 (see, for example, FIG. 1 of Patent Document 1) uses physical property values (electrical resistivity in Patent Document 1) obtained using a sensor device attached to the tip of a measuring tape to distinguish between concrete and a stabilizing fluid in the pile hole, and determines the depth of the concrete top end according to changes in the physical property values.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the above-described concrete top-end confirmation device requires an operator for operating the measuring tape and reading the scale of the measuring tape.

[0005] One aspect of the present invention has been made in view of the above-described problems, and the object is to provide a technique capable of obtaining the depth of the concrete top end of a cast-in-place pile without a person.

Means for Solving the Problems

[0006] To solve the above problems, a measurement method according to one aspect of the present invention is a method for measuring the top depth, which is the depth of the top surface of concrete driven into a pile hole of a cast-in-place pile filled with liquid. This measurement method includes a first measurement step of automatically measuring a first depth, which is the distance between the top surface and the liquid surface or a reference surface having a predetermined distance from the liquid surface; a second measurement step of automatically measuring a second depth, which is the distance between the liquid surface or the reference surface and the pile head of the pile hole; and a top depth calculation step of obtaining the top depth by calculating the sum of the first depth and the second depth.

[0007] Furthermore, the scope of the present invention includes a measurement method according to one aspect of the present invention, and also includes an adjustment method for adjusting the position of the tremie tube. This adjustment method employs a configuration that includes a tremie tube movement step in which the tremie tube is automatically moved according to the top depth.

[0008] To solve the above problems, a measuring device according to a tenth aspect of the present invention is a measuring device for measuring the top depth, which is the depth of the top surface of concrete driven into a pile hole of a cast-in-place pile filled with liquid. The measuring device comprises a floating body that floats on the surface of the liquid, a first measuring means that automatically measures a first depth, which is the distance between the top surface and the surface of the liquid or a reference surface having a predetermined distance from the surface, a second measuring means that automatically measures a second depth, which is the distance between the surface or the reference surface and the pile head of the pile hole, and a processor that obtains the top depth by calculating the sum of the first depth and the second depth.

[0009] Furthermore, the scope of the present invention also includes an adjustment device that includes a measuring device according to one aspect of the present invention and adjusts the position of the tremie tube. This adjustment device employs a configuration that includes a tremie tube moving unit that automatically moves the tremie tube according to the top depth. [Effects of the Invention]

[0010] According to one aspect of the present invention, the depth of the concrete top surface of a cast-in-place pile can be acquired unattended. [Brief explanation of the drawing]

[0011] [Figure 1] This is a flowchart showing the flow of the measurement method and adjustment method according to Embodiment 1 of the present invention. [Figure 2] This is a flowchart showing the flow of the measurement method according to Embodiment 1 of the present invention. [Figure 3] This is a schematic diagram showing the configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 4] This is a schematic diagram showing the configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 5] This is a block diagram showing the configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 6] This is a block diagram showing the configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 7] This is a block diagram showing the configuration of a measuring device according to Embodiment 1 of the present invention. [Figure 8] This is a schematic diagram showing the configuration of the adjustment device according to Embodiment 1 of the present invention. [Figure 9] This is a flowchart showing the flow of the measurement method according to Embodiment 2 of the present invention. [Figure 10] This is a schematic diagram showing the configuration of a measuring device according to Embodiment 2 of the present invention. [Figure 11] This is a block diagram showing the configuration of a measuring device according to Embodiment 2 of the present invention. [Figure 12] This is a flowchart showing the flow of the measurement method according to Embodiment 3 of the present invention. [Figure 13] This is a block diagram showing the configuration of a measuring device according to Embodiment 3 of the present invention. [Modes for carrying out the invention]

[0012] [Embodiment 1] The following describes one embodiment of the present invention.

[0013] (Overview of measurement method M10 and adjustment method M20) The measurement method M10 according to this embodiment is a measurement method for measuring the top-end depth, which is the depth of the top end of the concrete placed in the pile hole of a cast-in-place pile filled with liquid.

[0014] Moreover, the adjustment method M20 according to this embodiment includes the measurement method M10 and is an adjustment method for adjusting the position of the tremie pipe. Here, the tremie pipe according to this embodiment is for placing concrete in the pile hole of a cast-in-place pile.

[0015] (Flow of the measurement method M10 and the adjustment method M20) The flow of the measurement method M10 and the adjustment method M20 will be described with reference to FIG. 1. FIG. 1 is a flowchart showing the flow of the measurement method M10 and the adjustment method M20. As shown in FIG. 1, the measurement method M10 includes a first measurement step S11, a second measurement step S12, a top-end depth calculation step S13, a storage step S14, a display step S15, and a determination step S16. Moreover, as shown in FIG. 1, the adjustment method M20 includes the measurement method M10 and a tremie pipe movement step S17.

[0016] For example, in this embodiment, a measuring device including a rod and a floating body floating on the liquid surface of the liquid may be used. Here, the floating body is a floating body provided with a guide for sliding the rod along the vertical direction. For example, the floating body may contain a liquid or a solid for adjusting the height rising from the liquid surface inside.

[0017] (First measurement step S11 and second measurement step S12) The first measurement step S11 is a step of automatically measuring the first depth. The second measurement step S12 is a step of automatically measuring the second depth.

[0018] The first depth may be the interval between the top end and the liquid surface of the liquid. At this time, the second depth is the interval between the liquid surface of the liquid and the pile head of the pile hole. Also, at this time, the rod included in the above-described measuring device may be a rod longer than the interval between the top end and the liquid surface of the liquid.

[0019] The first measurement step S11 may be a step in which the first depth is obtained by measuring the first distance, which is the distance between the floating body and the upper end of the rod, with the rod set in the guide, and calculating the difference between the total length of the rod and the first distance. Here, the lower end of the rod is in contact with the top. The rod is made of a rigid body, such as metal. Specific examples of materials that make up the rod include aluminum, iron, and stainless steel. The material and shape of the rod may be appropriately configured so that the lower end of the rod is in contact with the top and remains stationary.

[0020] (When using a reference surface that is a predetermined distance from the liquid surface as the reference.) Furthermore, the first depth may be the distance between the top and a reference plane that is a predetermined distance from the liquid surface. The reference plane is the plane that serves as the reference when measuring the first depth DE1. In other words, the reference plane is a plane that includes the spatial position of the measuring means that measures the first depth DE1. In this case, the second depth is the distance between the reference plane and the pile head of the pile hole. Also, in this case, the rod provided by the measuring device described above may be a rod that is longer than the distance between the top and the reference plane that is a predetermined distance from the liquid surface. Note that the liquid surface and the reference plane do not have to coincide, or they may coincide.

[0021] (Second depth identification step S121) For example, the second measurement step S12 may include a second depth determination step S121. Figure 2 is a flowchart showing the flow of the second depth determination step S121 included in the second measurement step S12. For example, in this embodiment, a transmitter and receiver that communicate with each other may be used. Here, the transmitter and receiver measure the distance between them according to the communication result. In addition, one of the transmitter and receiver is installed on the floating body and the other is installed on the pile head. In this case, the second depth determination step S121 is a step in which the distance between the transmitter and receiver is set as the second depth.

[0022] (Ceiling depth calculation process S13) The top depth calculation process S13 is a process of obtaining the top depth by calculating the sum of the first depth and the second depth.

[0023] (Memory process S14 and display process S15) The storage step S14 is a step of storing the first depth and the second depth along with the timestamp. In this case, the display step S15 is a step of displaying distance information including the first depth and the second depth.

[0024] Furthermore, the storage step S14 is a step of storing the top depth along with a timestamp. In this case, the display step S15 is a step of displaying the top depth.

[0025] (Decision step S16) The determination step S16 is the step of determining the vertical position of the tremie pipe into which concrete will be poured, according to the top depth. In this case, the display step S15 is the step of further displaying the vertical position.

[0026] (Tremy tube moving process S17) The tremie pipe movement process S17 is a process that automatically moves the tremie pipe according to the top depth. In other words, the tremie pipe movement process S17 is a process that automatically moves the tremie pipe to match the vertical position of the tremie pipe determined in S16.

[0027] (Configuration of measuring device 1) The configuration of the measuring device 1 for performing measurement method M10 will be explained with reference to Figures 3 to 8. Figure 3 is a schematic diagram showing the configuration of the measuring device 1. The measuring device 1 is a measuring device that measures the top depth DE, which is the depth of the top surface TCO of the concrete CO that has been poured into the pile hole PH of a cast-in-place pile filled with liquid LI.

[0028] Liquid LI is a liquid stored inside the pile bore PH. Here, liquid LI applies liquid pressure to the bore bore PH wall to prevent it from collapsing due to earth pressure or other factors. For example, liquid LI may be intentionally filled into the pile bore PH. Specific examples of such liquid LI include stabilizing liquids such as bentonite solution. Alternatively, for example, liquid LI may be naturally occurring. Specific examples of such liquid LI include groundwater.

[0029] The measuring device 1 comprises a floating body 10, a first measuring means 11, a second measuring means 12, and a processor. As shown in Figure 3, the floating body 10 is a floating body that floats on the liquid surface LLI of the liquid LI. For example, the floating body 10 may contain a liquid or solid inside to adjust the height to which it floats above the liquid surface LLI.

[0030] For example, the measuring device 1 may further include a rod 13, as shown in Figure 3. Here, the floating body 10 may include a guide 101 that slides the rod 13 along the vertical direction, as shown in Figure 3.

[0031] Furthermore, for example, the measuring device 1 may further include a terminal 14, as shown in Figure 3. The terminal 14 may include a display unit 143 that displays distance information including the first depth DE1 and the second depth DE2, as well as the top depth DE, as shown in Figure 3.

[0032] The first measuring means 11 automatically measures the first depth DE1. The second measuring means 12 automatically measures the second depth DE2.

[0033] The first depth DE1 may be the distance between the top surface TCO and the liquid level LLI of the liquid LI, as shown in Figure 3. In this case, the second depth DE2 is the distance between the liquid level LLI of the liquid LI and the pile head HE of the pile hole PH. Also, in this case, the rod 13 may be longer than the distance between the top surface TCO and the liquid level LLI of the liquid LI, as shown in Figure 3.

[0034] The first measuring means 11 may measure a first distance D1, which is the distance between the floating body 10 and the upper end of the rod 13, with the rod 13 set on the guide 101. Here, the lower end of the rod 13 is in contact with the top surface. The rod 13 is made of a rigid material such as metal. Specific examples of materials that make up the rod 13 include aluminum, iron, and stainless steel. The material and shape of the rod 13 may be appropriately configured so that the lower end of the rod 13 is in contact with the top surface TCO and remains stationary.

[0035] (Flange 131) For example, the rod 13 may be provided with a flange 131. Figure 4 is a schematic diagram showing the configuration of the measuring device 1 when the rod 13 is further provided with a flange 131. As shown in Figure 4, the flange 131 is a flange provided at the lower end of the rod 13. Also, as shown in Figure 4, the flange 131 is a flange in which the area of ​​the region enclosed by the outer edge is larger than the cross-sectional area of ​​the cross-section of the rod 13. Specific examples of the shape of the contact surface of the flange 131 that contacts the top surface TCO include circular, rectangular, and square shapes. Also, for example, the flange 131 may contain a liquid or solid inside to adjust the weight of the flange 131. The weight and shape of the flange 131 may be appropriately configured so that the flange 131 contacts the top surface TCO and remains stationary.

[0036] (Distance measurement between the reflective part 130 and the reflective part) Furthermore, for example, a reflective portion 130 may be provided at the upper end of the rod 13, as shown in Figures 3 and 4. Also, for example, the first measuring means 11 may be a laser distance meter.

[0037] The first measuring means 11 may be, for example, a laser rangefinder that measures distance using LiDAR (Light Detection and Ranging) or a laser. The reflective part 130 may be, for example, a mirror that reflects light or a laser emitted by the first measuring means 11.

[0038] (Slide mechanism 102) Furthermore, for example, the measuring device 1 may further include a sliding mechanism 102. The sliding mechanism 102 slides the rod 13, which is set in the guide 101, along the vertical direction. The sliding mechanism 102 is also provided on the floating body 10, as shown in Figures 3 and 4. For example, the sliding mechanism 102 may include a motor for sliding the rod 13 along the vertical direction.

[0039] (When using a reference surface that is a predetermined distance from the liquid surface as the reference.) Furthermore, the first depth DE1 may be the distance between the top surface TCO and a reference plane having a predetermined distance from the liquid surface LLI of the liquid LI. The reference plane is the plane that the first measuring means 11 uses as a reference when measuring the first depth DE1. In other words, the reference plane is a plane that includes the position in space where the first measuring means 11 is located. In this case, the second depth DE2 is the distance between the reference plane and the pile head HE of the pile hole PH. Also, in this case, the rod 13 may be a rod that is longer than the distance between the top surface TCO and the reference plane having a predetermined distance from the liquid surface LLI of the liquid LI. Note that the liquid surface LLI of the liquid LI and the reference plane do not have to coincide, or they may coincide.

[0040] (Second measuring means 12) For example, the second measuring means 12 may consist of a transmitter and a receiver that communicate with each other. Here, the transmitter and receiver measure the distance between them as the second depth DE2 according to the communication result. Of the transmitter and receiver, one is installed on the floating body 10 and the other is installed on the pile head HE.

[0041] For example, as shown in Figures 3 and 4, one of the transmitter and receiver constituting the second measuring means 12 may be the first measuring means 11 installed on the floating body 10, and the other may be a communication device 120 installed on the pile head HE.

[0042] The transmitter and receiver may communicate with each other, for example, using frequencies in the Ultra Wide Band (UWB). In this case, the first measuring means 11 may further include a configuration for measuring distance using UWB or the like. A specific example of the communication device 120 is a smartphone.

[0043] Here, the transmitter and receiver may measure the difference between the height of the transmitter and the height of the receiver in the vertical direction as the second depth DE2. The height of the first measuring means 11 corresponds to the liquid level LLI of the liquid LI or the height of the reference plane described above. The height of the communication device 120 corresponds to the height of the pile head HE.

[0044] (1st measurement means 11) Figure 5 is a block diagram showing an example configuration of the first measurement means 11. As shown in Figure 5, the first measurement means 11 includes a processor 110, a first depth identification unit 111, a second depth identification unit 112, a storage unit 113, and a first communication unit 114. Specific examples of the first measurement means 11 include smartphones and laser scanners.

[0045] The processor 110 controls all parts of the first measuring means 11.

[0046] The first depth determination unit 111 measures a first distance D1, which is the distance between the floating body 10 and the upper end of the rod 13, with the rod 13 set on the guide 101, and calculates the first depth DE1 from the difference between the total length LE of the rod 13 and the first distance D1. For example, the first depth determination unit 111 may measure the distance using LiDAR or a laser. In this case, the first depth determination unit 111 may measure the distance using a configuration that irradiates light or a laser and a configuration that receives reflected light or a laser.

[0047] The second depth determination unit 112 measures the difference between the height of the first measuring means 11 and the height of the communication device 120 in the vertical direction as the second depth DE2. At this time, for example, the second depth determination unit 112 may measure the second depth DE2 by communicating with the communication device 120 using a configuration that transmits radio waves using a frequency in UWB and a configuration that receives said radio waves.

[0048] The memory unit 113 stores various data referenced by the processor 110, as well as various data generated by the processor 110. Specific examples of data stored in the memory unit 113 include the total length LE of the rod 13, the first distance D1, and the first depth DE1.

[0049] The first communication unit 114 performs communication with external configurations of the first measuring means 11. For example, the first communication unit 114 performs communication with each external configuration connected to the first measuring means 11 via a network N (not shown). The first communication unit 114 transmits data supplied from the processor 110 to the outside and supplies data received from each external configuration to the processor 110. For example, the first communication unit 114 transmits the first depth DE1 to the outside. For example, the first communication unit 114 may further transmit data such as the total length LE of the rod 13 and the first distance D1 to the outside. The specific configuration of the network N is not limited to this exemplary embodiment, but for example, a wireless LAN (Local Area Network), a wired LAN, a WAN (Wide Area Network), a public telephone network, a mobile data communication network, or a combination of these networks can be used.

[0050] (Communication device 120) Figure 6 is a block diagram showing an example configuration of the communication device 120. As shown in Figure 6, the communication device 120 comprises a processor 1200, a second depth identification unit 1201, a storage unit 1202, and a second communication unit 1203.

[0051] The processor 1200 controls all parts of the communication device 120. The processor 1200 may also obtain the top depth DE by calculating the sum of the first depth DE1 and the second depth DE2.

[0052] The second depth determination unit 1201 measures the difference between the height of the first measuring means 11 and the height of the communication device 120 in the vertical direction as the second depth DE2. At this time, for example, the second depth determination unit 1201 may measure the second depth DE2 by communicating with the first measuring means 11 using a configuration that transmits radio waves using a frequency in UWB and a configuration that receives said radio waves.

[0053] The memory unit 1202 stores various data referenced by the processor 1200, as well as various data generated by the processor 110. Specific examples of data stored in the memory unit 1202 include the first depth DE1, the second depth DE2, the top depth DE, the total length LE of the rod 13, and the first distance D1.

[0054] The second communication unit 1203 performs communication with external configurations of the communication device 120. For example, the second communication unit 1203 performs communication with each external configuration connected to the communication device 120 via the network N described above. The second communication unit 1203 transmits data supplied from the processor 1200 to the outside and supplies data received from each external configuration to the processor 1200. For example, the second communication unit 1203 transmits the second depth DE2 to the outside. For example, the second communication unit 1203 may also receive data such as the first depth DE1, the total length LE of the rod 13, and the first distance D1 from the first depth identification unit 111. For example, the second communication unit 1203 may further transmit data such as the first depth DE1, the top depth DE, the total length LE of the rod 13, and the first distance D1 to the outside.

[0055] (Terminal 14) Figure 7 is a block diagram showing an example configuration of terminal 14. As shown in Figure 7, terminal 14 comprises a processor 140, a receiving unit 141, a storage unit 142, and a display unit 143. Specific examples of terminal 14 include personal computers, tablet computers, and smartphones.

[0056] The processor 140 controls all parts of the terminal 14. The processor 140 may also obtain the top depth DE by calculating the sum of the first depth DE1 and the second depth DE2.

[0057] The processor used to calculate the top depth DE can be any of the processors provided in the measuring device 1. For example, the processor used to calculate the top depth DE may be the processor 1200 provided in the communication device 120, as described above, or it may be the processor 140 provided in the terminal 14.

[0058] For example, the processor 140 may store the first depth DE1 and the second depth DE2 along with a timestamp in the storage unit 142 described later, and display distance information including the first depth DE1 and the second depth DE2 in the display unit 143 described later. Specific examples of distance information that the processor 140 displays in the display unit 143 include, in addition to the first depth DE1 and the second depth DE2 mentioned above, the total length LE of the rod 13 and the first distance D1.

[0059] Furthermore, for example, the processor 140 may store the top depth DE along with the timestamp in the storage unit 142 described later, and also display the top depth DE on the display unit 143 described later.

[0060] Furthermore, for example, the processor 140 may determine the vertical position of the tremie pipe TR into which the concrete CO is poured, according to the top depth DE, and display this vertical position on the display unit 143. The adjustment device 2 that moves the tremie pipe TR according to the determined position of the tremie pipe TR will be described later with reference to Figure 8.

[0061] The receiving unit 141 receives data from external configurations of the terminal 14. For example, the receiving unit 141 receives data from various external configurations connected to the terminal 14 via the network N described above. The receiving unit 141 supplies the data received from each external configuration to the processor 140. Here, for example, the receiving unit 141 receives the first depth DE1 and the second depth DE2. Also, for example, the receiving unit 141 may further receive data such as the top depth DE, the total length LE of the rod 13, and the first distance D1.

[0062] The memory unit 142 stores various data referenced by the processor 140, and various data generated by the processor 140. Specific examples of data stored by the memory unit 142 include the first depth DE1, the second depth DE2, the top depth DE, the total length LE of the rod 13, the first distance D1, and the position of the tremie tube TR. For example, the memory unit 142 may store the first depth DE1 and the second depth DE2 together with a timestamp. Alternatively, for example, the memory unit 142 may store the top depth DE together with a timestamp.

[0063] The display unit 143 displays various data stored in the storage unit 142. For example, the display unit 143 may display distance information including the first depth DE1 and the second depth DE2. Alternatively, for example, the display unit 143 may display the top depth DE. Alternatively, for example, the display unit 143 may display the vertical position of the tremie tube TR.

[0064] (Configuration of adjustment device 2) The configuration of the adjustment device 2 for executing adjustment method M20 will be explained with reference to Figure 8. Figure 8 is a schematic diagram showing an example of the configuration of the adjustment device 2. The adjustment device 2 is an adjustment device that includes a measuring device 1 and adjusts the position of the tremie pipe TR. As shown in Figure 8, the adjustment device 2 includes a tremie pipe moving part 20. Also, ST1 and ST2 in Figure 8 are diagrams showing the state transitions associated with the adjustment of the position of the tremie pipe TR. In ST1 and ST2 of Figure 8, concrete is placed in stages from multiple concrete pump trucks (not shown) via the tremie pipe TR. That is, concrete CO1 to CO6 in Figure 8 represent concrete placed from the 1st to 6th concrete pump trucks via the tremie pipe TR, respectively. ST1 is a diagram showing the state after concrete CO1 to CO4 have been placed. ST2 is a diagram showing the state after concrete CO5 and CO6 have been further placed after the position of the tremie pipe TR has been adjusted.

[0065] (Ptolemy tube moving section 20) The tremie tube moving unit 20 automatically moves the tremie tube TR according to the top depth DE. That is, the tremie tube moving unit 20 automatically moves the tremie tube TR to match the vertical position of the tremie tube TR determined by the processor 140.

[0066] For example, as shown in Figure 8, as the concrete placement work into the pile hole PH progresses, the top surface TCO of the placed concrete rises and the top surface depth DE decreases. Also, for example, the target range for the insertion length of the tremie pipe TR into the placed concrete may be determined in advance.

[0067] For example, as shown in ST1, the processor 140 may determine the vertical position of the tremie pipe TR so that a predetermined target range for the insertion length of the tremie pipe TR is maintained when the concrete placement from any number of concrete pump trucks (four trucks in ST1, CO1 to CO4) is completed. At this time, for example, as shown in ST2, the tremie pipe moving unit 20 may automatically move the tremie pipe TR with the position of the tremie pipe TR determined by the processor 140 as the target. Then, as shown in ST2, concrete CO5 and CO6 may be placed in the tremie pipe TR.

[0068] Furthermore, for example, the tremie pipe moving section 20 may move the tremie pipe TR upward via a lifting machine. The configuration of the tremie pipe moving section 20 may include, for example, the terminal 14 described above, or it may be a separate configuration from the terminal 14.

[0069] [Embodiment 2] A second embodiment of the present invention will be described below. For the sake of convenience, components having the same function as those described in the above embodiment will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0070] (Summary of this embodiment) Embodiment 1 described a case in which a rod is used in the configuration for measuring the first depth. This embodiment describes a case in which a winch is used instead of a rod in the above-described configuration for measuring the first depth.

[0071] (Measurement method M10 and adjustment method M20 according to this embodiment) The measurement method M10 according to this embodiment is a measurement method for measuring the top depth, which is the depth of the top surface of concrete driven into the pile hole of a cast-in-place pile that is filled with liquid, similar to the measurement method M10 according to Embodiment 1.

[0072] Furthermore, the adjustment method M20 according to this embodiment includes the measurement method M10 and is an adjustment method for adjusting the position of the tremie tube.

[0073] The measurement method M10 according to this embodiment includes a first measurement step S11, a second measurement step S12, a top depth calculation step S13, a storage step S14, a display step S15, and a determination step S16. The adjustment method M20 according to this embodiment includes the measurement method M10 according to this embodiment and a tremie tube movement step S17.

[0074] For example, in this embodiment, a measuring device may be used that includes a floating body that floats on the surface of a liquid and a winch provided on the floating body. Here, the winch includes a thread-like member, a weight provided at the tip of the thread-like member, a tension detection unit that detects the tension applied to the thread-like member, and a payout length detection unit that detects the payout length, which is the length of the thread-like member that has been paid out. Alternatively, the winch may include a member having a strip-like shape, such as a tape, instead of the thread-like member. The weight and shape of the weight may be appropriately configured so that the weight contacts the top end and remains stationary.

[0075] (First measurement step S11 and second measurement step S12) The first measurement step S11 is a step in which the first depth is automatically measured. The second measurement step S12 is a step in which the second depth is automatically measured.

[0076] The first depth may be the distance between the top and the liquid surface. In this case, the second depth is the distance between the liquid surface and the pile head of the pile hole.

[0077] Furthermore, the first depth may be the distance between the top surface and a reference plane that has a predetermined distance from the liquid surface. In this case, the second depth is the distance between the reference plane and the pile head of the pile hole.

[0078] (First measurement step S11 according to this embodiment) The first measurement step S11 according to this embodiment will be described with reference to Figure 9. Figure 9 is a flowchart showing the flow of the first measurement step S11 according to this embodiment. As shown in Figure 9, the first measurement step S11 according to this embodiment includes a feed-out step S111, a stop step S112, and a first depth identification step S113.

[0079] (Feed-out process S111) The feeding process S111 is a process of feeding out the thread-like member while detecting the tension. For example, the feeding process S111 may be a process of feeding out the thread-like member while detecting the tension exerted by a weight attached to the tip of the thread-like member as it descends inside the liquid.

[0080] (Stop process S112) The stopping step S112 is a step in which the unwinding of the thread-like member is stopped when the tension detected in the unwinding step S111 falls below a predetermined tension. For example, the stopping step S112 may be a step in which the unwinding of the thread-like member is stopped when the weight lowered inside the liquid comes into contact with the top surface. That is, the predetermined tension may be set appropriately, for example, to a value close to 0, and so as not to cause the thread-like member to sag.

[0081] (First depth identification step S113) The first depth determination process S113 is a process in which the length of the payout after the stop process S112 is performed is defined as the first depth.

[0082] (Ceiling depth calculation process S13) The top depth calculation process S13 is a process of obtaining the top depth by calculating the sum of the first depth and the second depth.

[0083] Note that, with respect to the measurement method M10 and adjustment method M20 according to this embodiment, the configurations other than those described above may be the same as those described in Embodiment 1, and therefore their description is omitted here.

[0084] (Configuration of the measuring device 3 according to this embodiment) The configuration of the measuring device 3 for performing the measurement method M10 according to this embodiment will be described with reference to Figures 10 and 11. Figure 10 is a schematic diagram showing the configuration of the measuring device 3. The measuring device 3 is a measuring device that measures the top depth DE, which is the depth of the top TCO of the concrete CO that has been poured into the pile hole PH of a cast-in-place pile filled with liquid LI.

[0085] The measuring device 3 comprises a floating body 10, a first measuring means 11, a second measuring means 12, and a processor. As shown in Figure 10, the floating body 10 is a floating body that floats on the liquid surface LLI of the liquid LI.

[0086] For example, the first measuring means 11 according to this embodiment may be a winch provided on the floating body 10, as shown in Figure 10. Here, the first measuring means 11 according to this embodiment may include a thread-like member 1101 and a weight 1102 provided at the tip of the thread-like member 1101, as shown in Figure 10. Alternatively, the first measuring means 11 according to this embodiment may include a member having a strip-like shape, such as a tape, instead of the thread-like member 1101. The weight and shape of the weight 1102 may be appropriately configured so that the weight 1102 contacts the top surface TCO and remains stationary.

[0087] Furthermore, for example, the measuring device 3 may further include a terminal 14, as shown in Figure 10. The terminal 14 may include a display unit 143 that displays distance information including the first depth DE1 and the second depth DE2, as well as the top depth DE, as shown in Figure 10.

[0088] The first measuring means 11 automatically measures the first depth DE1. The second measuring means 12 automatically measures the second depth DE2.

[0089] The first depth DE1 may be the distance between the top surface TCO and the liquid level LLI of the liquid LI, as shown in Figure 10. In this case, the second depth DE2 is the distance between the liquid level LLI of the liquid LI and the pile head HE of the pile hole PH.

[0090] (When using a reference surface that is a predetermined distance from the liquid surface as the reference.) Furthermore, the first depth DE1 may be the distance between the top surface TCO and a reference plane having a predetermined distance from the liquid level LLI of the liquid LI. In this case, the second depth DE2 is the distance between the reference plane and the pile head HE of the pile hole PH.

[0091] (First measuring means 11 according to this embodiment) Figure 11 is a block diagram showing an example configuration of the first measuring means 11 according to this embodiment. As shown in Figure 11, the first measuring means 11 includes a processor 110, a first depth identification unit 111, a second depth identification unit 112, a storage unit 113, a first communication unit 114, a tension detection unit 115, an extension length detection unit 116, an extension unit 117, and a stop unit 118. The first measuring means 11 according to this embodiment may be, for example, the winch described above, or it may be configured to include a winch and a smartphone that can communicate with each other.

[0092] The memory unit 113 stores various data referenced by the processor 110, as well as various data generated by the processor 110. Specific examples of data stored in the memory unit 113 include the payout length and the first depth DE1.

[0093] The tension detection unit 115 detects the tension applied to the filamentous member 1101. A specific example of the tension detection unit 115 is a sensor that detects tension.

[0094] The unwinding length detection unit 116 detects the unwinding length, which is the length of the unwinded thread-like member 1101. A specific example of the unwinding length detection unit 116 is a sensor that detects the unwinding length of the thread-like member.

[0095] The dispensing unit 117 dispenses the thread-like member 1101 while detecting the tension. For example, the dispensing unit 17 may lower the weight 1102 inside the liquid LI while dispensing the thread-like member 1101 while detecting the tension that the weight 1102 exerts on the thread-like member 1101.

[0096] The stopper 118 stops the unwinding of the filamentous member 1101 when the tension falls below a predetermined tension. For example, in this embodiment, the stopper 118 may stop the unwinding of the filamentous member 1101 when the weight 1102 lowered inside the liquid LI comes into contact with the top surface TCO. That is, the predetermined tension may be set appropriately, for example, to a value close to 0, and so as not to cause the filamentous member 1101 to sag.

[0097] The first depth determination unit 111 calculates the payout length when the tension falls below a predetermined tension as the first depth DE1.

[0098] (Communication device 120) The communication device 120 includes a processor 1200, a second depth identification unit 1201, a storage unit 1202, and a second communication unit 1203.

[0099] The processor 1200 controls all parts of the communication device 120. The processor 1200 may also obtain the top depth DE by calculating the sum of the first depth DE1 and the second depth DE2.

[0100] (Terminal 14) Terminal 14 comprises a processor 140, a receiving unit 141, a storage unit 142, and a display unit 143. The processor 140 controls all parts of terminal 14. The processor 140 may also obtain the top depth DE by calculating the sum of the first depth DE1 and the second depth DE2.

[0101] (Configuration of the adjustment device 2 according to this embodiment) The adjustment device 2 that performs the adjustment method M20 according to this embodiment is an adjustment device that includes a measuring device 3 and adjusts the position of the tremie tube TR.

[0102] Note that, regarding the configurations of the measuring device 3 and adjustment device 2 in this embodiment other than those described above, they may be the same as the configurations of the measuring device 1 and adjustment device 2 described in Embodiment 1, so their description is omitted here.

[0103] [Embodiment 3] A third embodiment of the present invention will be described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0104] (Summary of this embodiment) Embodiment 2 described a case in which the length of the filamentous member is detected when the lowered weight contacts the top surface in a configuration for measuring the first depth. This embodiment describes a case in which the length of the filamentous member is detected when the slack filamentous member is stretched out in the above-described configuration for measuring the first depth.

[0105] (Measurement method M10 and adjustment method M20 according to this embodiment) The measurement method M10 according to this embodiment is a measurement method for measuring the top depth, which is the depth of the top surface of concrete driven into a pile hole of a cast-in-place pile that is filled with liquid, similar to the measurement method M10 according to Embodiments 1 and 2.

[0106] Furthermore, the adjustment method M20 according to this embodiment includes the measurement method M10 and is an adjustment method for adjusting the position of the tremie tube.

[0107] The measurement method M10 according to this embodiment includes a first measurement step S11, a second measurement step S12, a top depth calculation step S13, a storage step S14, a display step S15, and a determination step S16. The adjustment method M20 according to this embodiment includes the measurement method M10 according to this embodiment and a tremie tube movement step S17.

[0108] For example, in this embodiment, a measuring device may be used that includes a floating body that floats on the surface of a liquid and a winch provided on the floating body. Here, the winch includes a thread-like member, a weight provided at the tip of the thread-like member, a tension detection unit for detecting the tension applied to the thread-like member, and a payout length detection unit for detecting the payout length, which is the length of the thread-like member that has been paid out.

[0109] (First measurement step S11 and second measurement step S12) The first measurement step S11 is a step in which the first depth is automatically measured. The second measurement step S12 is a step in which the second depth is automatically measured.

[0110] The first depth may be the distance between the top and the liquid surface. In this case, the second depth is the distance between the liquid surface and the pile head of the pile hole.

[0111] Furthermore, the first depth may be the distance between the top surface and a reference plane that has a predetermined distance from the liquid surface. In this case, the second depth is the distance between the reference plane and the pile head of the pile hole.

[0112] (First measurement step S11 according to this embodiment) The first measurement step S11 according to this embodiment will be described with reference to Figure 12. Figure 12 is a flowchart showing the flow of the first measurement step S11 according to this embodiment. As shown in Figure 12, the first measurement step S11 according to this embodiment includes a feed-out step S111, a wind-up step S114, a stop step S112, and a first depth determination step S113.

[0113] (Feed-out process S111) The unwinding process S111 is the process of unwinding the thread-like member until the weight reaches the top and the thread-like member becomes slack.

[0114] (Winding process S114) The winding process S114 is a process of winding up the thread-like material while detecting the tension.

[0115] (Stop process S112) The stopping step S112 is a step in which the winding of the thread-like member is stopped when the tension detected in the winding step S114 exceeds a predetermined tension. For example, the stopping step S112 according to this embodiment may be a step in which the winding of the thread-like member is stopped when the slack thread-like member is wound up and becomes straight. That is, the predetermined tension may be set appropriately, for example, to a value close to 0, and so as not to lift the weight away from the top.

[0116] (First depth identification step S113) The first depth determination process S113 is a process in which the length of the payout after the stop process S112 is performed is defined as the first depth.

[0117] (Ceiling depth calculation process S13) The top depth calculation process S13 is a process of obtaining the top depth by calculating the sum of the first depth and the second depth.

[0118] Note that, with respect to the measurement method M10 and adjustment method M20 according to this embodiment, the configurations other than those described above may be the same as those described in Embodiments 1 and 2, and therefore their description is omitted here.

[0119] (Configuration of the measuring device 3 according to this embodiment) The measuring device 3 that performs the measurement method M10 according to this embodiment is a measuring device that measures the top depth DE, which is the depth of the top surface TCO of concrete CO that has been poured into the pile hole PH of a cast-in-place pile filled with liquid LI.

[0120] The measuring device 3 comprises a floating body 10, a first measuring means 11, a second measuring means 12, and a processor. The floating body 10 is a floating body that floats on the liquid level LLI of the liquid LI.

[0121] For example, the first measuring means 11 in this embodiment may be a winch provided on the floating body 10. Here, the first measuring means 11 in this embodiment may include a thread-like member 1101 and a weight 1102 provided at the tip of the thread-like member 1101.

[0122] The first measuring means 11 automatically measures the first depth DE1. The second measuring means 12 automatically measures the second depth DE2.

[0123] The first depth DE1 may be the distance between the crest TCO and the liquid level LLI of the liquid LI. In this case, the second depth DE2 is the distance between the liquid level LLI of the liquid LI and the pile head HE of the pile hole PH.

[0124] (When using a reference surface that is a predetermined distance from the liquid surface as the reference.) Furthermore, the first depth DE1 may be the distance between the top surface TCO and a reference plane having a predetermined distance from the liquid level LLI of the liquid LI. In this case, the second depth DE2 is the distance between the reference plane and the pile head HE of the pile hole PH.

[0125] (First measuring means 11 according to this embodiment) The configuration of the first measuring means 11 according to this embodiment will be described with reference to Figure 13. Figure 13 is a block diagram showing an example of the configuration of the first measuring means 11 according to this embodiment. As shown in Figure 13, the first measuring means 11 includes a processor 110, a first depth identification unit 111, a second depth identification unit 112, a storage unit 113, a first communication unit 114, a tension detection unit 115, an unwinding length detection unit 116, a winding unit 119, and a stop unit 118.

[0126] The tension detection unit 115 detects the tension applied to the filamentous member 1101.

[0127] The unwinding length detection unit 116 detects the unwinding length, which is the length of the unwinded thread-like member 1101.

[0128] The winding unit 119 winds up the thread-like member 1101 that has been unwound, while detecting the tension, until the weight 1102 reaches the top surface TCO and the thread-like member 1101 becomes slack. A specific example of the winding unit 119 is a winding mechanism consisting of a reel, which is a rotating cylindrical member for winding up the thread-like member, an electrically driven motor, and a clutch that transmits the motor's power to the reel. The configuration of this winding mechanism may, as an example, be the same as the unwinding unit 117 described in Embodiment 2.

[0129] The stopper 118 stops the unwinding of the thread-like member 1101 when the tension exceeds a predetermined tension. For example, in this embodiment, the stopper 118 may stop winding up the thread-like member 1101 when the slack thread-like member 1101 is wound up and becomes straight. That is, the predetermined tension may be set appropriately, for example, to a value close to 0, and so that the weight 1102 does not move away from the top surface TCO.

[0130] The first depth determination unit 111 calculates the payout length when the tension exceeds a predetermined tension as the first depth DE1.

[0131] (Communication device 120) The communication device 120 includes a processor 1200, a second depth identification unit 1201, a storage unit 1202, and a second communication unit 1203.

[0132] The processor 1200 controls all parts of the communication device 120. The processor 1200 may also obtain the top depth DE by calculating the sum of the first depth DE1 and the second depth DE2.

[0133] (Terminal 14) Terminal 14 comprises a processor 140, a receiving unit 141, a storage unit 142, and a display unit 143. The processor 140 controls all parts of terminal 14. The processor 140 may also obtain the top depth DE by calculating the sum of the first depth DE1 and the second depth DE2.

[0134] (Configuration of the adjustment device 2 according to this embodiment) The adjustment device 2 that performs the adjustment method M20 according to this embodiment is an adjustment device that includes a measuring device 3 and adjusts the position of the tremie tube TR.

[0135] Note that, regarding the configurations of the measuring device 3 and adjustment device 2 in this embodiment other than those described above, they may be the same as the configurations of the measuring device 1 and adjustment device 2 described in Embodiment 1, and the measuring device 3 described in Embodiment 2, so their description is omitted here.

[0136] [Examples of implementation using software] The functions of measuring devices 1 and 3 and adjustment device 2 (hereinafter referred to as "devices") can be realized by programs that cause computers to function as devices, and by programs that cause computers to function as each control block of the devices (in particular, each part included in processors 110, 1200, and 140).

[0137] In this case, the device includes a computer having at least one control device (e.g., a processor) and at least one storage device (e.g., memory) as hardware for executing the program. By executing the program using this control device and storage device, the functions described in each of the embodiments are realized.

[0138] The above program may be recorded on one or more computer-readable recording media, not temporary ones. These recording media may or may not be provided by the above device. In the latter case, the program may be supplied to the above device via any wired or wireless transmission medium.

[0139] Furthermore, some or all of the functions of each of the above control blocks can also be realized by logic circuits. For example, an integrated circuit in which logic circuits functioning as each of the above control blocks are formed is also included in the scope of the present invention. In addition, it is also possible to realize the functions of each of the above control blocks by, for example, a quantum computer.

[0140] Furthermore, each process described in the above embodiments may be performed by AI (Artificial Intelligence). In this case, the AI ​​may operate on the control device described above, or it may operate on other devices (for example, an edge computer or a cloud server).

[0141] The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention.

[0142] 〔summary〕 One object of this invention is to provide a technology that enables the unmanned acquisition of the depth of the concrete top surface of a cast-in-place pile.

[0143] To achieve the above objective, a measurement method according to a first aspect of the present invention is a measurement method for measuring the top depth, which is the depth of the top surface of concrete driven into a pile hole of a cast-in-place pile filled with liquid. This measurement method includes a first measurement step of automatically measuring a first depth, which is the distance between the top surface and the liquid surface or a reference surface having a predetermined distance from the liquid surface; a second measurement step of automatically measuring a second depth, which is the distance between the liquid surface or the reference surface and the pile head of the pile hole; and a top depth calculation step of obtaining the top depth by calculating the sum of the first depth and the second depth.

[0144] According to the above configuration, the first and second depths are automatically measured, and then the top depth is calculated. Therefore, this measurement method can unattendedly acquire the depth of the top surface of a cast-in-place concrete pile that is located in a liquid.

[0145] Furthermore, in the measurement method according to the second aspect of the present invention, in addition to the configuration of the measurement method according to the first aspect described above, a measuring device is used that includes a rod and a floating body that floats on the surface of the liquid. In this measurement method, the rod is a rod whose length is greater than the distance between its top end and the surface of the liquid or a reference surface having a predetermined distance from the surface, and the floating body is a floating body provided with a guide for sliding the rod along the vertical direction. In this measurement method, the first measurement step is to measure a first distance, which is the distance between the floating body and the upper end of the rod, with the rod set in the guide, and to obtain the first depth by calculating the difference between the total length of the rod and the first distance.

[0146] According to the above configuration, the rod, set in the floating guide, sinks into the liquid due to its own weight, and stops sinking when its tip contacts the top surface of the concrete. In other words, the rod remains stationary with its tip in contact with the top surface. If the top surface rises as concrete is poured sequentially, the rod will rise along with the rising top surface. In this way, the first measurement step can automatically measure the first depth. Therefore, this measurement method can automatically measure the first depth with a simple configuration.

[0147] Furthermore, in the measurement method according to the third aspect of the present invention, in addition to the configuration of the measurement method according to the first aspect described above, a measuring device is used that includes a floating body that floats on the surface of the liquid and a winch provided on the floating body. The winch includes a thread-like member, a weight provided at the tip of the thread-like member, a tension detection unit for detecting the tension applied to the thread-like member, and a payout length detection unit for detecting the payout length, which is the length of the thread-like member that has been paid out. In this measurement method, the first measurement step is configured to include a payout step of paying out the thread-like member while detecting the tension, a stop step of stopping the payout of the thread-like member when the tension detected in the payout step falls below a predetermined tension, and a first depth determination step of setting the payout length after the stop step as the first depth.

[0148] According to the above configuration, the weight dispensed during the dispensing process sinks into the liquid due to its own weight and eventually settles on the top surface of the concrete. As the weight settles on the top surface, the tension in the filamentous member decreases compared to the tension before the weight settled on the top surface. At this point, by performing the stopping process and the first depth determination process, the first measurement process can automatically measure the first depth. Therefore, this measurement method can automatically measure the first depth.

[0149] Furthermore, in the measurement method according to the fourth aspect of the present invention, in addition to the configuration of the measurement method according to the first aspect described above, a measuring device is used that includes a floating body that floats on the surface of the liquid and a winch provided on the floating body. The winch includes a thread-like member, a weight provided at the tip of the thread-like member, a tension detection unit for detecting the tension applied to the thread-like member, and a payout length detection unit for detecting the payout length, which is the length of the thread-like member that has been paid out. In this measurement method, the first measurement step is configured to include a payout step in which the thread-like member is paid out until the weight reaches the top and the thread-like member becomes slack, a winding step in which the thread-like member is wound up while detecting the tension, a stopping step in which the winding of the thread-like member is stopped when the tension detected in the winding step exceeds a predetermined tension, and a first depth determination step in which the payout length after the stopping step is set to the first depth.

[0150] According to the above configuration, the weight unfurled during the unfurling process sinks into the liquid due to its own weight and settles on the top surface of the concrete. Subsequently, during the winding process, the slack thread-like member is wound up. As the slack thread-like member is wound up and the weight moves away from the top surface, the tension in the thread-like member becomes greater than the tension when the weight is settled on the top surface. At this point, by performing the stopping process and the first depth determination process, the first measurement process can automatically measure the first depth. Therefore, this measurement method can automatically measure the first depth.

[0151] Furthermore, in the measurement method according to the fifth aspect of the present invention, in addition to the configuration of the measurement method according to any one of the second to fourth aspects described above, a transmitter and receiver that communicate with each other are used, and the transmitter and receiver measure the distance between the transmitter and receiver according to the communication result, one of the transmitter and the receiver is installed on the floating body and the other is installed on the pile head, and the second measurement step includes a second depth determination step in which the distance between the transmitter and the receiver is defined as the second depth.

[0152] With the above configuration, the second depth can be automatically measured by using a transmitter and receiver in the second measurement step.

[0153] Furthermore, in the measurement method according to the sixth aspect of the present invention, in addition to the configuration of the measurement method according to any one of the first to fourth aspects described above, a configuration is adopted that further includes a storage step of storing the first depth and the second depth together with a timestamp, and a display step of displaying distance information including the first depth and the second depth.

[0154] With the above configuration, distance information including changes over time can be displayed, so for example, information about the top surface can be notified to a person who is located far away from the pile hole.

[0155] Furthermore, in the seventh aspect of the present invention, in addition to the configuration of the measurement method according to any one of the first to fourth aspects described above, a configuration is adopted that further includes a storage step for storing the top depth together with a timestamp, and a display step for displaying the top depth.

[0156] With the above configuration, it is possible to display the crest depth including changes over time, so for example, the crest depth can be notified to someone located far from the pile hole.

[0157] Furthermore, in the eighth aspect of the present invention, in addition to the configuration of the seventh aspect of the present invention described above, a determination step is further included in which the position in the vertical direction of the tremie pipe into which the concrete is poured is determined according to the top depth, and the display step further displays the position in the vertical direction.

[0158] With the above configuration, the position of the tremie pipe determined according to the pile top depth can be displayed, so for example, an operator located far from the pile hole can be notified of the position of the tremie pipe determined according to the pile top depth. As a result, the operator who has learned the position of the tremie pipe determined according to the pile top depth can adjust the position of the tremie pipe by operating the lifting machine.

[0159] To achieve the above objective, the adjustment method according to the ninth aspect of the present invention is an adjustment method that includes the measurement method according to the eighth aspect described above and adjusts the position of the tremie tube. This adjustment method employs a configuration that includes a tremie tube moving step in which the tremie tube is automatically moved according to the top depth.

[0160] According to the above configuration, the tremie pipe can be automatically moved according to its position determined by the depth of the concrete top surface. Therefore, the position of the tremie pipe can be adjusted unattended according to the depth of the concrete top surface of the cast-in-place pile.

[0161] To achieve the above objective, a measuring device according to a tenth aspect of the present invention is a measuring device for measuring the top depth, which is the depth of the top surface of concrete driven into a pile hole of a cast-in-place pile filled with liquid. The measuring device comprises a floating body that floats on the surface of the liquid, a first measuring means that automatically measures a first depth, which is the distance between the top surface and the surface of the liquid or a reference surface having a predetermined distance from the surface, a second measuring means that automatically measures a second depth, which is the distance between the surface or the reference surface and the pile head of the pile hole, and a processor that obtains the top depth by calculating the sum of the first depth and the second depth.

[0162] The above configuration provides the same effect as the measurement method according to the first aspect of the present invention.

[0163] Furthermore, in the measuring device according to the 11th aspect of the present invention, in addition to the configuration of the measuring device according to the 10th aspect described above, the device further comprises a rod that is longer than the distance between the top end and the liquid surface or a reference surface having a predetermined distance from the liquid surface, the floating body is provided with a guide for sliding the rod along the vertical direction, and the first measuring means measures a first distance, which is the distance between the floating body and the upper end of the rod, with the rod set in the guide, and defines the difference between the total length of the rod and the first distance as the first depth.

[0164] The above configuration provides the same effect as the measurement method according to the second aspect of the present invention.

[0165] Furthermore, in the measuring device according to the 12th aspect of the present invention, in addition to the configuration of the measuring device according to the 11th aspect described above, the rod is provided with a flange at the lower end of the rod, wherein the area of ​​the region enclosed by the outer edge is larger than the cross-sectional area of ​​the cross-section of the rod.

[0166] With the above configuration, the flange provided at the lower end of the rod contacts the top surface of the concrete, making it difficult for the lower end of the rod to sink into the concrete. Therefore, even when pouring concrete with low penetration resistance, for example, the error that may occur when measuring the first depth can be reduced.

[0167] Furthermore, in the measuring device according to the 13th aspect of the present invention, in addition to the configuration of the measuring device according to the 11th aspect described above, a configuration is adopted in which a sliding mechanism is provided on the floating body for sliding the rod set in the guide along the vertical direction.

[0168] According to the above configuration, the rod can be forcibly slid upward. Therefore, when the lower end of the rod is submerged in concrete, forcibly sliding the rod upward can pull the lower end out of the concrete and bring it back into contact with the top surface.

[0169] Furthermore, in the measuring device according to the 14th aspect of the present invention, in addition to the configuration of the measuring device according to the 11th aspect described above, a reflective part is provided at the upper end of the rod, and the first measuring means is a laser distance meter.

[0170] With the above configuration, the distance between the upper end of the rod and the liquid surface or a reference surface at a predetermined distance from the liquid surface can be automatically measured using a laser distance meter. Therefore, this exposure apparatus can automatically measure the first depth by taking the difference between the total length of the rod and the said distance.

[0171] Furthermore, in the measuring device according to the 15th aspect of the present invention, in addition to the configuration of the measuring device according to the 10th aspect described above, the first measuring means is a winch provided on the floating body, comprising: a thread-like member; a weight provided at the tip of the thread-like member; a tension detection unit for detecting the tension applied to the thread-like member; a payout length detection unit for detecting the payout length which is the length of the thread-like member that has been paid out; a payout unit for paying out the thread-like member while detecting the tension; a stop unit for stopping the payout of the thread-like member when the tension falls below a predetermined tension; and a first depth determination unit for setting the payout length when the tension falls below the predetermined tension as the first depth.

[0172] The above configuration provides the same effect as the measurement method according to the third aspect of the present invention.

[0173] Furthermore, in the measuring device according to the 16th aspect of the present invention, in addition to the configuration of the measuring device according to the 10th aspect described above, the first measuring means is a winch provided on the floating body, comprising: a thread-like member; a weight provided at the tip of the thread-like member; a tension detection unit for detecting the tension applied to the thread-like member; a payout length detection unit for detecting the payout length, which is the length of the thread-like member that has been paid out; a winding unit for winding up the thread-like member that has been paid out until the weight reaches the top and the thread-like member becomes slack, while detecting the tension; a stop unit for stopping the winding of the thread-like member when the tension exceeds a predetermined tension; and a first depth determination unit for setting the payout length when the tension exceeds the predetermined tension as the first depth.

[0174] The above configuration provides the same effect as the measurement method according to the fourth aspect of the present invention.

[0175] In the measuring device according to the 17th aspect of the present invention, in addition to the configuration of the measuring device according to any one of the 11th, 12th, 15th, and 16th aspects described above, the second measuring means is composed of a transmitter and a receiver that communicate with each other, and the transmitter and receiver measure the distance between the transmitter and the receiver as the second depth according to the communication result, wherein one of the transmitter and the receiver is installed on the floating body and the other is installed on the pile head.

[0176] The above configuration provides the same effect as the measurement method according to the fifth aspect of the present invention.

[0177] In the measuring device according to the 18th aspect of the present invention, in addition to the configuration of the measuring device according to the 17th aspect described above, the first measuring means includes a first communication unit for transmitting the first depth to the outside, and the second measuring means includes a second communication unit for transmitting the second depth to the outside. The measuring device further includes a terminal having a processor, a receiving unit for receiving the first depth and the second depth, a storage unit, and a display unit. In this measuring device, the processor is configured to store the first depth and the second depth together with a timestamp in the storage unit, and to display distance information including the first depth and the second depth in the display unit.

[0178] The above configuration provides the same effect as the measurement method according to the sixth aspect of the present invention.

[0179] In the measuring device according to the 19th aspect of the present invention, in addition to the configuration of the measuring device according to the 17th aspect described above, the first measuring means includes a first communication unit for transmitting the first depth to the outside, and the second measuring means includes a second communication unit for transmitting the second depth to the outside. The measuring device further includes a terminal having a processor, a receiving unit for receiving the first depth and the second depth, a storage unit, and a display unit. In this measuring device, the processor is configured to store the top depth together with a timestamp in the storage unit and to display the top depth on the display unit.

[0180] The above configuration provides the same effect as the measurement method according to the seventh aspect of the present invention.

[0181] Furthermore, in the measuring device according to the 20th aspect of the present invention, in addition to the configuration of the measuring device according to the 19th aspect described above, the processor further determines the vertical position of the tremie pipe into which the concrete is poured according to the top depth, and displays the vertical position on the display unit.

[0182] According to the above configuration, the same effect as the measurement method according to the eighth aspect of the present invention is achieved.

[0183] To achieve the above objective, the adjustment device according to the 21st aspect of the present invention is an adjustment device that includes a measuring device according to the 20th aspect and adjusts the position of the tremie tube. This adjustment device employs a configuration that includes a tremie tube moving unit that automatically moves the tremie tube according to the top depth.

[0184] According to the above configuration, the same effect as the adjustment method according to the ninth aspect of the present invention is achieved. [Explanation of symbols]

[0185] 1.3 Measuring device 2 Adjustment device 10 Floating bodies 11 First measuring means 12 Second measuring means 13 bars 14 devices 20 Ptolemy tube moving section 101 Guide 102 Slide mechanism 110, 140, 1200 processors 111 1st Depth Identification Section 112, 1201 2nd depth identification section 113, 142, 1202 Storage section 114 1st Communications Department 115 Tension detection unit 116 Detection Unit 117. Extending section 118 Stop part 119 Winding section 120 communications devices 130 Reflector 131 Flange 141 Receiving Unit 143 Display section 1101 Thread-like member 1102 Weight 1203 Second Communications Department

Claims

1. A method for measuring the top depth, which is the depth of the top surface of concrete driven into a pile hole of a cast-in-place pile filled with liquid, A first measurement step that automatically measures a first depth which is the distance between the top surface and the liquid surface or a reference surface having a predetermined distance from the liquid surface, A second measurement step that automatically measures a second depth, which is the distance between the liquid level or the reference surface and the pile head of the pile hole, A measurement method comprising a top depth calculation step of obtaining the top depth by calculating the sum of the first depth and the second depth.

2. Using a measuring device that includes a rod and a float that floats on the surface of the liquid, The rod is a rod whose length is greater than the distance between the top end and the liquid surface or a reference surface that is at a predetermined distance from the liquid surface, The floating body is provided with a guide for sliding the rod along the vertical direction, The first measurement step involves measuring a first distance, which is the distance between the floating body and the upper end of the rod, with the rod set in the guide, and obtaining the first depth by calculating the difference between the total length of the rod and the first distance. The measurement method according to claim 1.

3. Using a measuring device that includes a floating body that floats on the surface of the liquid and a winch provided on the floating body, The winch comprises a thread-like member, a weight provided at the tip of the thread-like member, a tension detection unit for detecting tension applied to the thread-like member, and a payout length detection unit for detecting the payout length, which is the length of the thread-like member that has been paid out. The first measurement step includes a feeding step of feeding out the thread-like member while detecting the tension, a stopping step of stopping the feeding out of the thread-like member when the tension detected in the feeding step falls below a predetermined tension, and a first depth determination step of setting the feeding length after the stopping step as the first depth. The measurement method according to claim 1.

4. Using a measuring device that includes a floating body that floats on the surface of the liquid and a winch provided on the floating body, The winch comprises a thread-like member, a weight provided at the tip of the thread-like member, a tension detection unit for detecting tension applied to the thread-like member, and a payout length detection unit for detecting the payout length, which is the length of the thread-like member that has been paid out. The first measurement step includes an unwinding step of unwinding the thread-like member until the weight reaches the top and the thread-like member becomes slack, a winding step of winding up the thread-like member while detecting the tension, a stopping step of stopping the winding of the thread-like member when the tension detected in the winding step exceeds a predetermined tension, and a first depth determination step of setting the unwinding length after the stopping step as the first depth. The measurement method according to claim 1.

5. A transmitter and receiver that communicate with each other, and which measures the distance between the transmitter and receiver according to the communication result, Of the transmitter and the receiver, one is installed on the floating body, and the other is installed on the pile head. The second measurement step includes a second depth determination step in which the distance between the transmitter and the receiver is defined as the second depth. The measurement method according to any one of claims 2 to 4.

6. A storage step of storing the first depth and the second depth along with a timestamp, The process further includes a display step of displaying distance information including the first depth and the second depth, The measurement method according to any one of claims 1 to 4.

7. A storage step in which the top depth is stored along with a timestamp, The process further includes a display step of displaying the top depth, The measurement method according to any one of claims 1 to 4.

8. The process further includes a determination step of determining the vertical position of the tremie pipe into which the concrete is poured, according to the top depth. The display step further displays the position in the vertical direction. The measurement method according to claim 7.

9. An adjustment method comprising the measurement method described in claim 8, and for adjusting the position of the tremie tube, This includes a tremie tube moving step that automatically moves the tremie tube according to the top depth, Adjustment method.

10. A measuring device for measuring the top depth, which is the depth of the top surface of concrete driven into the pile hole of a cast-in-place pile filled with liquid, A floating body that floats on the surface of the aforementioned liquid, A first measuring means that automatically measures a first depth which is the distance between the top surface and the liquid surface or a reference surface having a predetermined distance from the liquid surface, A second measuring means for automatically measuring a second depth, which is the distance between the liquid level or the reference surface and the pile head of the pile hole, A measuring device comprising a processor that obtains the top depth by calculating the sum of the first depth and the second depth.

11. The system further comprises a rod that is longer than the distance between the top surface and the liquid surface or a reference surface that is a predetermined distance from the liquid surface, The floating body is equipped with a guide that allows the rod to slide along the vertical direction. The first measuring means measures a first distance, which is the distance between the floating body and the upper end of the rod, with the rod set in the guide, and defines the difference between the total length of the rod and the first distance as the first depth. The measuring device according to claim 10.

12. The rod is provided with a flange at its lower end, wherein the area of ​​the region enclosed by its outer edge is greater than the cross-sectional area of ​​the rod's cross-section. The measuring device according to claim 11.

13. A sliding mechanism for sliding the rod set in the guide along the vertical direction, further comprising a sliding mechanism provided on the floating body. The measuring device according to claim 11.

14. A reflective part is provided at the upper end of the aforementioned rod. The first measuring means is a laser distance meter. The measuring device according to claim 11.

15. The first measuring means is a winch provided on the floating body, comprising: a thread-like member; a weight provided at the tip of the thread-like member; a tension detection unit for detecting tension applied to the thread-like member; a payout length detection unit for detecting the payout length which is the length of the thread-like member that has been paid out; a payout unit for paying out the thread-like member while detecting the tension; a stop unit for stopping the payout of the thread-like member when the tension falls below a predetermined tension; and a first depth determination unit for determining the payout length when the tension falls below the predetermined tension as the first depth. The measuring device according to claim 10.

16. The first measuring means is a winch provided on the floating body, comprising: a thread-like member; a weight provided at the tip of the thread-like member; a tension detection unit for detecting tension applied to the thread-like member; a payout length detection unit for detecting the payout length, which is the length of the thread-like member that has been paid out; a winding unit for winding up the thread-like member while detecting the tension until the weight reaches the top and the thread-like member becomes slack; a stop unit for stopping the winding of the thread-like member when the tension exceeds a predetermined tension; and a first depth determination unit for setting the payout length when the tension exceeds the predetermined tension as the first depth. The measuring device according to claim 10.

17. The second measuring means comprises a transmitter and a receiver that communicate with each other, and the transmitter and receiver measure the distance between the transmitter and the receiver as the second depth according to the communication result. Of the transmitter and the receiver, one is installed on the floating body, and the other is installed on the pile head. A measuring device according to any one of claims 11, 12, 15, or 16.

18. The first measuring means includes a first communication unit that transmits the first depth to the outside, The second measuring means includes a second communication unit that transmits the second depth to the outside, The measuring device further comprises a terminal having a processor, a receiving unit for receiving the first depth and the second depth, a storage unit, and a display unit. The processor stores the first depth and the second depth together with a timestamp in the storage unit, and displays distance information including the first depth and the second depth in the display unit. The measuring device according to claim 17.

19. The first measuring means includes a first communication unit that transmits the first depth to the outside, The second measuring means includes a second communication unit that transmits the second depth to the outside, The measuring device further comprises a terminal having a processor, a receiving unit for receiving the first depth and the second depth, a storage unit, and a display unit. The processor stores the top depth along with a timestamp in the storage unit and displays the top depth on the display unit. The measuring device according to claim 17.

20. The processor further determines the vertical position of the tremie pipe into which the concrete is poured, according to the top depth, and displays the vertical position on the display unit. The measuring device according to claim 19.

21. An adjustment device comprising the measuring device described in claim 20, and for adjusting the position of the tremie tube, It is equipped with a tremie tube moving unit that automatically moves the tremie tube according to the top depth. Adjustment device.

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