Concrete pouring management support device

Abstract

To provide a concrete casting management and support device with which compaction status of concrete during construction can be easily visualized in real time.SOLUTION: A concrete casting management and support device 1, which is used to manage on-site concrete casting, includes a reference point measurement part that measures, over time, the three-dimensional coordinates of a marker 22 for identifying the position of a vibrator B, a concrete measurement part that measures the height of the top surface of the concrete over time, a vibrator compaction time acquisition part, a compaction range identification part that identifies the compaction range based on the measurement results of the reference point measurement part, the concrete measurement part, and the compaction time acquisition part, a casting management part that manages the pouring time based on the height of the top surface of concrete, and a display terminal 4 that displays information regarding the compaction range and the casting time.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a concrete placement management support device for performing placement management of in-place concrete.

Background Art

[0002] When constructing a concrete structure, concrete may be placed vertically in multiple stages. The concrete placed within the placement range of the concrete surrounded by a formwork or the like must be compacted by a vibrator for a predetermined time, and within a predetermined time (hereinafter referred to as the "allowable placement overlap time") after placement, concrete must be placed on top.

[0003] If the compaction by the vibrator is insufficient, bubbles or the like entrained during the placement of the concrete remain inside, causing a decrease in the density of the concrete or the occurrence of honeycombing.

[0004] Also, when placing concrete vertically, it is necessary to place the upper layer of concrete before the lower layer of concrete hardens. If the placement overlap time interval (hereinafter referred to as the "overlap time") of the concrete, which is the difference between the placement time of the upper layer of concrete and the placement time of the lower layer of concrete, becomes longer than the predetermined time, cold joints will also occur.

[0005] Therefore, various technologies have been developed to support the placement management of concrete. For example, Patent Document 1 discloses a concrete placement management system for obtaining high-quality concrete by performing proper compaction. Also, Patent Documents 2 and 3 disclose concrete placement management systems for accurately managing the overlap time until placement.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Patent Publication No. 2019-124110 [Patent Document 2] Japanese Patent Publication No. 2018-35628 [Patent Document 3] Japanese Patent Publication No. 2011-202383 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] However, both concrete compaction and layering management are important management items, and it is desirable that they be managed by a single system. Furthermore, it is desirable to have easily verifiable markings for workers and supervisors performing concrete placement work.

[0008] Therefore, the present invention aims to provide a concrete pouring management support device that makes it possible to easily visualize the condition of concrete during construction in real time. [Means for solving the problem]

[0009] To achieve the above objective, the concrete placement management support device of the present invention is a concrete placement management support device for performing placement management of cast-in-place concrete, comprising: a reference point measurement unit that measures the three-dimensional coordinates of a reference point for identifying the position of a vibrator used for compacting the placed concrete along with time; a concrete measurement unit that measures the height of the top surface of the concrete along with time from a position in which the positional relationship with the reference point can be identified; a compaction time acquisition unit that acquires the start time and end time of the compaction managed by the vibrator; a compaction range identification unit that identifies the compaction range of the concrete based on the measurement results of the reference point measurement unit, the concrete measurement unit and the compaction time acquisition unit; a stacking management unit that manages the stacking time based on the top surface height measured by the concrete measurement unit; and a display unit that displays the compaction range and the stacking time, wherein the display unit makes it possible to visually identify the overlapping area of ​​the compaction ranges of the concrete placed vertically and vertically, and is capable of displaying the stacking time.

[0010] Here, the display unit can be configured to change its display format according to the length of time elapsed since the concrete was poured, and to stop changing the display format when the pouring time is specified. Alternatively, the display unit can be configured to display the overlapping area of ​​the compaction range of the concrete in at least one of the upper and lower layers by using a display format that allows the compaction range of the concrete to be seen through.

[0011] Furthermore, the reference point is a marker attached to the vibrator cable, and the reference point measurement unit can be configured to measure the three-dimensional coordinates by photographing the marker with multiple video cameras. In addition, it is preferable that the concrete measurement unit is a laser distance meter mounted at a predetermined distance below the reference point. [Effects of the Invention]

[0012] The concrete placement management support device of the present invention, configured as described above, includes a concrete measurement unit that measures the height of the top surface of the concrete over time, and a compaction time acquisition unit that acquires the start and end times of compaction by a vibrator. Based on these measurement results, the compaction range of the concrete can be identified. In addition, the placement time is managed by the placement management unit.

[0013] Furthermore, the display unit, which shows the compaction range and pouring time, allows for the visual identification of the overlapping areas of the compaction ranges of the upper and lower poured concrete, and also displays the pouring time. As a result, workers and managers performing concrete pouring work can easily and visually check the condition of the concrete in real time during construction. [Brief explanation of the drawing]

[0014] [Figure 1] This is a schematic diagram illustrating the configuration of the concrete pouring management support device of this embodiment. [Figure 2] This is an explanatory diagram regarding the measurement of the top surface height of concrete. [Figure 3] This is an explanatory diagram regarding the measurement of the 3D coordinates of a reference point. [Figure 4] This is an explanatory diagram illustrating the overlapping area of ​​compacted concrete poured in layers. [Figure 5] This is an explanatory diagram of the compaction area of ​​concrete. [Figure 6] This is an explanatory diagram illustrating the state shown in Figure 4 when viewed from the side. [Figure 7] This is an explanatory diagram illustrating a display that reflects the time taken for repeated striking. [Figure 8] Figure 7 shows an example of the state as viewed from a different direction, where (a) is a side view and (b) is a top view. [Figure 9] These are examples of how to indicate the compaction area of ​​concrete, where (a) is a bird's-eye view, (b) is a plan view, and (c) is a side view. [Figure 10]An example of a display that reflects the layering time, where (a) is a bird's-eye view, (b) is a plan view, and (c) is a side view.

Embodiments of the Invention

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram schematically showing the configuration of the concrete placement management support device 1 of the present embodiment.

[0016] The concrete placement management support device 1 of the present embodiment is used for construction management when placing concrete in a placement range K surrounded by a formwork or the like. In the placement range K, fresh concrete is driven in a plurality of times in the vertical direction (height direction).

[0017] When the fresh concrete is driven into the placement range K up to the height of one layer, tamping is performed by the vibrator B. The tamping is carried out so that no gap is formed in the tamping range in the horizontal direction. And before the time set after the placement of the concrete elapses, the fresh concrete for the upper layer is driven in. And the time from the placement of the lower layer of concrete to the placement of the upper layer of concrete is the layering time.

[0018] After the upper layer of concrete is driven in, tamping is performed in the same manner as in the case of the lower layer of concrete. At this time, tamping is carried out so that an overlapping area of the tamping ranges of the vertically layered concrete (hereinafter, also referred to as the "tamping lap area") is formed.

[0019] In the concrete placement management support device 1 of the present embodiment, the tamping range, the tamping lap area, and the layering time are managed, so that workers M and construction managers who perform the concrete placement work can easily confirm them by means of the display terminal 4 or the like.

[0020] As shown in Figure 1, the concrete placement management support device 1 for managing the placement of such cast-in-place concrete comprises a reference point measurement unit (21) that measures the three-dimensional coordinates of a reference point (22) over time, a concrete measurement unit (3) that measures the height of the top surface of the concrete over time, an arithmetic processing unit 11 that performs various calculations and controls, and a display unit (4) that displays various information based on the various measurement results.

[0021] The reference point measurement unit can have any configuration, such as a positioning system using a GNSS antenna of the Global Navigation Satellite System, or a positioning system using ultra-wideband (UWB) wireless communication technology, as long as it is a means capable of measuring the three-dimensional coordinates of a reference point for determining the position of the vibrator B used to compact the poured concrete.

[0022] This embodiment describes a reference point measurement unit that can accurately acquire the coordinates of a reference point even in locations that are not suitable for a positioning system using a GNSS antenna. In the reference point measurement unit of this embodiment, positioning is performed using digital data obtained by motion capture, in which a marker 22 to be used as a reference point is captured by multiple video cameras 21.

[0023] As shown in Figure 2, the marker 22 is attached to a cable B1 connected to the vibrator B. This figure illustrates a configuration in which a fixing bracket 32 ​​is attached to the middle of the cable B1, which extends vertically above the vibrator B, and the marker 22 is attached on top of a measuring instrument 31 fixed to the fixing bracket 32. This fixing bracket 32 ​​can be attached at any position on the cable B1.

[0024] The marker 22 can be a sphere, for example, coated with retroreflective paint. Depending on the conditions of the concrete pouring area K and the measurement time (daytime or nighttime), it is also possible to use either a spherical marker with only paint applied or a self-illuminating marker. In the case of a spherical marker, infrared light is emitted from the motion capture camera and detected by the reflection of the light from the marker. In the case of a self-illuminating marker, infrared light is emitted from the marker itself, eliminating the need for infrared light from the camera and thus reducing noise. Also, if the distance between the marker 22 and the video camera 21 is large, a larger spherical marker 22 can be used. In the case of a self-illuminating marker, detection can be made easier by using a high-power marker.

[0025] Figure 3 is an explanatory diagram regarding the measurement of the three-dimensional coordinates of the reference point marker 22. Since the marker 22, which is positioned directly above the vibrator B, will move within the concrete pouring area K as needed, multiple video cameras 21 constituting the reference point measurement unit are used to ensure that the entire concrete pouring area K is captured without any blind spots.

[0026] To create three-dimensional data of a single marker 22, two or more video cameras 21 installed at different locations are sufficient. However, in concrete construction sites, there are many obstacles to filming the marker 22, such as workers M and equipment. Therefore, to ensure that the marker 22 can always be captured by three video cameras 21, six video cameras 21, or at least four of them, are installed at approximately equal intervals in the circumferential direction from the center of the concrete pouring area K.

[0027] Furthermore, the video camera 21 is positioned higher than the formwork and workers M that define the movement range of the marker 22 and the pouring area K. For example, a PrimeX13 (product name, 1.3 million pixels, 30-240fps, lens field of view 56°) can be used as the video camera 21.

[0028] Marker 22 is attached in the middle of cable B1 connected to vibrator B so that video camera 21 can take pictures even when vibrator B is compacting the bottom layer of concrete.

[0029] As shown in Figure 2, when compacting concrete with vibrator B, cable B1 is positioned straight, so the planar (2D) position of vibrator B can be determined by the planar (2D) position of marker 22.

[0030] The marker 22 can be attached anywhere as long as its positional relationship with the vibrator B, which moves repeatedly during construction, can always be determined. However, in this embodiment, the marker 22 is fixed to the upper surface of the measuring instrument 31, which is attached to the cable B1 via a fixing bracket 32.

[0031] The measuring instrument 31 is equipped with a laser distance meter 3, which constitutes a concrete measuring unit for measuring the height of the concrete top surface C. The laser distance meter 3 measures the distance D2 (see Figure 2) between the bottom surface of the measuring instrument 31 and the concrete top surface C by reflecting a downward-emitting laser beam off the concrete top surface C.

[0032] Inside the box-shaped measuring instrument 31, in addition to the laser distance meter 3, a data processing unit (not shown) and a battery are housed. Furthermore, a switch 33 for instructing the start and end of compaction management can be provided on the surface of the box-shaped measuring instrument 31.

[0033] When the laser distance meter 3 measures distance D2, it is temporarily stored in the data processing unit along with the time of measurement, and then the measured value and time are transmitted externally via the antenna 311. Here, the distance D3 between the bottom surface of the measuring instrument 31, which is the base point of the laser distance meter 3, and the center of the marker 22, and the distance D1 from the center of the marker 22 to the bottom end of the vibrator B are measured in advance using a measuring tape or the like.

[0034] Then, once the vertical coordinate (Z coordinate) of the marker 22 is determined by motion capture using the video camera 21, the Z coordinate of the concrete surface C can be determined by subtracting the distance (D3 + D2) from the Z coordinate of the marker 22.

[0035] On the other hand, the vertical coordinate (Z coordinate) of the lower end of vibrator B can be determined by subtracting the distance D1 from the Z coordinate of marker 22. The height range (insertion depth) of the concrete compaction range by vibrator B can be determined by the Z coordinate of the lower end of vibrator B and the Z coordinate of the concrete top surface C.

[0036] Furthermore, the lateral region of the concrete compaction area by vibrator B can be defined by the outer edge of a cylindrical or polygonal prism shape centered on vibrator B. For example, a cylinder with a diameter n times (e.g., approximately 10 times) the diameter of vibrator B can be defined as the compaction area R1 (see Figure 5).

[0037] As shown in Figure 1, signals such as measured values ​​transmitted from the antenna 311 of the measuring instrument 31 are received by the communication unit 12 connected to the arithmetic processing unit 11 and processed by the arithmetic processing unit 11, which is a computer terminal such as a laptop computer. The arithmetic processing unit 11 is equipped with a storage medium such as a hard disk or SSD (solid state drive) as its storage unit.

[0038] The calculation processing unit 11 executes at least a portion of the calculations performed in the concrete placement management support device 1. In short, the calculation processing required in the reference point measurement unit, concrete measurement unit, compaction time acquisition unit, compaction range identification unit, concrete placement management unit, and display unit can be performed within various devices such as the measuring instrument 31 and the display terminal 4, but it can also be performed by the computer in the calculation processing unit 11.

[0039] The reference point measurement unit obtains the three-dimensional coordinates of the reference point marker 22 by analyzing video data captured by the video camera 21, and stores these three-dimensional coordinates, along with the time they were measured, in the storage unit of the arithmetic processing unit 11.

[0040] In the concrete measurement unit, the height of the concrete surface C is measured along with the time from a laser rangefinder 3 located at a position where the positional relationship with the marker 22 can be determined by distance D3 (see Figure 2), and the data transmitted by the antenna 311 of the measuring instrument 31 is stored in the memory unit of the calculation processing unit 11. For example, a grid is formed by subdividing the plane of the pouring area K into sides of approximately 2 mm to 10 mm, and the time at which the height of the concrete surface C changes for each grid is stored as the concrete pouring time.

[0041] The compaction time acquisition unit acquires the start and end times of compaction managed by vibrator B. For example, after switching on vibrator B and positioning it in the location for concrete compaction, when a signal indicating that switch 33 of measuring instrument 31 has been switched on is sent to the calculation processing unit 11, that time, or a time obtained by adding or subtracting a predetermined amount of time from that time, is stored in the memory unit as the start time of compaction. Also, based on the time when switch 33 of measuring instrument 31 is switched off, that time, or a time obtained by adding or subtracting a predetermined amount of time from that time, is stored in the memory unit of the calculation processing unit 11 as the end time of compaction.

[0042] Therefore, the compaction time can be calculated by the calculation processing unit 11 from the compaction start time and compaction end time. The required compaction time is generally around 5 to 15 seconds, and can be set to, for example, 10 seconds.

[0043] The compaction range identification unit of the calculation processing unit 11 can identify the planar and vertical coordinates of the vibrator B at a given time from the three-dimensional coordinates of the marker 22 measured by the reference point measurement unit at that time. If that time corresponds to the compaction time by the vibrator B managed by the compaction time acquisition unit, the compaction range of the concrete can then be identified. For example, when the compaction time by the vibrator B reaches the required compaction time, if the maximum movement of the vibrator B from the start of compaction to the current time falls within the allowable error during compaction, which is within 15 cm horizontally and 10 cm vertically, the compaction range of the concrete can be identified using the planar and vertical coordinates of the vibrator B at the start of compaction as reference points.

[0044] The concrete pouring management unit manages the pouring time based on the height of the concrete surface C measured by the concrete measurement unit. For example, if a new concrete surface C height is measured above the height of the concrete surface C measured at a certain time, the time up to that point is stored as the pouring time in the memory unit of the calculation processing unit 11.

[0045] The display unit then displays information regarding the concrete compaction range and the pouring time. The display terminal 4, which serves as the display unit, can be a tablet device carried by the worker M during work. In addition, calculations for the data to be displayed on the display terminal 4 can be performed on the tablet device, or the calculation results performed by the calculation processing unit 11 may be sent to the tablet device for display.

[0046] On display terminal 4, the overlapping area of ​​the compaction ranges of the vertically poured concrete can be visually identified, and the display can reflect the pouring time. Figure 4 is an explanatory diagram illustrating the overlapping area of ​​the compaction ranges of the vertically poured concrete.

[0047] Here, regarding the concrete compaction range R1 (R2), as shown in Figure 5, a cylindrical shape with a diameter approximately 10 times the diameter of vibrator B can be set as the effective compaction range, which is the area affected by vibrator B. One vibrator B can be used while moving it, but multiple vibrators B can also be used depending on the planar area of ​​the pouring range K.

[0048] As shown in Figure 4, the display terminal 4 can overlay the compaction range R2 of the upper layer of concrete, which was poured later, onto the compaction range R1 of the lower layer of concrete, which was poured earlier. This display integrates the compaction ranges R1 and R2 from multiple vibrators B and displays them on a single screen. Here, the compaction completion ranges are grouped by layer (lift), and different hues are used to display each lift.

[0049] In this compaction area display, not only are the hues of the compaction areas R1 and R2 different between the lower and upper layers, but the compaction areas R1 and R2 of the lower and upper layers are displayed translucently (semi-transparently), so the compaction area R2 of the upper layer is visible through the compaction area R1 of the lower layer. In other words, the compaction overlap area W, which is the overlapping area of ​​the compaction areas R1 and R2 of the concrete poured vertically, becomes visible, and the continuity of the compaction areas of the upper and lower poured sections can be confirmed with a single display. Note that as long as the compaction overlap area W is visible, the translucent display may be applied to only one layer, either the upper or lower layer.

[0050] Figure 6 is an explanatory diagram illustrating the bird's-eye view shown in Figure 4, but viewed from the side. The display terminal 4 allows for easy switching of the viewing direction of the compaction area. With this side view, the position of the upper edge of the lower layer (1st layer), the position of the lower edge of the upper layer (2nd layer), and the length of the compaction overlap area W can be clearly confirmed.

[0051] The display terminal 4 can display not only the compaction range but also the placement time. Figure 7 is an explanatory diagram illustrating a display that reflects the placement time. In this figure, the height of the concrete top surface C of each layer is displayed as viewed from a slightly oblique angle. Specifically, the display area C1 for the height of the concrete top surface C when the first layer is placed, the display area C2 for the height of the concrete top surface C when the second layer is placed, and the display area C3 for the height of the concrete top surface C when the third layer is placed are displayed as viewed from a slightly oblique angle. These display areas C1-C3 can be displayed, for example, as circles representing the effective compaction range in the planar direction of the vibrator B.

[0052] On the other hand, Figure 8 is an example of the state shown in Figure 7 viewed from a different direction. Figure 8(a) is an example of the display being switched to a side view, and Figure 8(b) is an example of the display being switched to a top view. These displays are angled slightly, away from being directly to the side or directly above, for easier viewing.

[0053] The time elapsed since concrete placement is managed by the concrete placement management unit, and the display format Ha for the first layer C1 indicates the longest elapsed time since placement. Since concrete will develop quality defects such as cold joints if it is not placed again within the allowable re-placement time (e.g., 2 hours), it is preferable to set the display format on the concrete surface C to change to darker or warmer colored display format Ha as the elapsed time increases, in order to easily attract the attention of users. When worker M sees a dark (warm) display format Ha or Hb on the display terminal 4, they can prevent exceeding the re-placement time by prioritizing the placement of concrete in that area.

[0054] Furthermore, even in the first layer (C1), areas that were poured later are marked with the lighter colored Hb designation than the Ha designation. Additionally, the Hc and Hd designations for the second layer (C2) and third layer (C3) are lighter or cooler colored due to the shorter time elapsed since pouring.

[0055] This change in display pattern Ha-Hd stops when concrete is poured on top. Referring to Figure 8(b), the darkest display pattern Ha on the far left is displayed because concrete was not poured above the first layer C1.

[0056] Even within the same compaction area of ​​the first layer C1, if the second layer C2 is poured on top, the change will stop at, for example, the display pattern Hb, and will not change to the darker display pattern Ha even after time has passed.

[0057] By enabling the display terminal 4 to show the pouring time in this way, worker M can easily confirm that the upper layer of concrete has been poured within the allowable pouring time.

[0058] Next, we will describe the concrete placement management using the concrete placement management support device 1 of this embodiment. In the following explanation, we will use the example shown in Figure 1, where ready-mixed concrete is poured in multiple stages in the height direction into a rectangular pouring area K enclosed by formwork.

[0059] First, as a preparatory step, the concrete placement management support device 1 is set up. After positioning multiple video cameras 21, which will serve as the reference point measurement unit, the device is made to recognize the placement area K that will be measured by motion capture. Specifically, a ruler with three markers 22 attached is swung from multiple directions within the shooting range of the video camera 21 to define the relative position of the video camera 21. Then, a right-angled triangular ruler with three markers 22 attached is placed at the corners of the formwork that will be used to define the space, and the formwork with the right-angled triangular ruler attached is photographed by the video camera 21 to define the spatial origin and axis direction. By comparing this information with the placement area K that has been input in advance, the device recognizes the placement area K to be measured in relative coordinates.

[0060] Furthermore, settings such as the required compaction time, allowable over-casting time, effective compaction range of vibrator B (radial and vertical directions), allowable movement of vibrator B during compaction (radial and vertical directions), specific radius of concrete top surface height, allowable threshold for grouping on the same lift, and planned casting height for each lift are input to suit the construction site.

[0061] A measuring instrument 31 is attached to all vibrators B used for compaction. Specifically, a measuring instrument 31 with a marker 22 fixed to its upper surface is attached to the cable B1 of each vibrator B using a fixing bracket 32. The attachment position of the fixing bracket 32 ​​to the cable B1 may differ for each vibrator B, and for each, the distance D1 (see Figure 2) between the center of the marker 22 and the lower end of the vibrator B is measured.

[0062] When concrete pouring begins within the pouring area K, worker M positions vibrator B at an arbitrary location and raises cable B1 to make vibrator B vertical. When marker 22 is filmed with video camera 21 in this state, motion capture analysis is performed to determine the 3D coordinates of marker 22. In other words, the planar position of vibrator B can be determined.

[0063] Furthermore, if the measuring instrument 31 is activated, the laser distance meter 3 measures the distance D2 (see Figure 2) to the top surface C of the concrete being poured at predetermined time intervals. The height of the top surface of the concrete at this time can be determined from this measured distance D2, the distance D3 from the laser distance meter 3 to the marker 22, and the vertical coordinate of the marker 22.

[0064] The newly acquired concrete top surface height is applied to the effective compaction radius range or the square circumscribing it, and the calculation processing unit 11 stores in its memory the value of the already placed concrete top surface height display circle centered on the vibrator B directly below that range, assuming that the concrete pouring is complete. In other words, the concrete pouring time is determined.

[0065] Once the concrete placement time is determined, the elapsed time since placement will not be updated for the concrete surface height in that area, regardless of how much time has passed since then. On the other hand, for areas where the concrete placement time has not been determined, the elapsed time since placement will be updated as time passes.

[0066] The recording of compaction by vibrator B is set to begin, for example, when the switch 33 of measuring instrument 31 is turned on. Specifically, after switching on vibrator B and positioning it in the location where concrete compaction will be performed, the time when the switch 33 of measuring instrument 31 is turned on is set as the start time of compaction, and the time when the switch 33 of measuring instrument 31 is turned off is set as the end time of compaction, and the compaction time is calculated. If this compaction time exceeds the required compaction time (for example, 10 seconds), the area in which the insertion depth and effective compaction range are determined by the position of the lower end of vibrator B and the height of the top surface of the concrete is stored in the memory as the compaction range R1. Here, it is also possible to configure the system to notify worker M of the completion of compaction by a display terminal 4 or a lamp on measuring instrument 31 when the required compaction time has elapsed from the start time of compaction.

[0067] The display terminal 4 carried by worker M can display the top surface height of the concrete (display format Ha-Hd) from the first layer of concrete placement, reflecting the compaction range R1 and the elapsed time since concrete placement (see Figures 4 and 7, etc.).

[0068] On the other hand, Figure 9 shows an example of the compaction range displayed on the display terminal 4 after multiple lifts (concrete layers) have been poured in the vertical direction. The compaction management screen displayed on the display terminal 4 allows users to switch between user-friendly displays such as a bird's-eye view as shown in Figure 9(a), a plan view as shown in Figure 9(b), and a side view as shown in Figure 9(c), to check the compaction range of each lift and the continuity of compaction (compactment overlap area) of the upper and lower poured sections.

[0069] Figure 10 is also an example of a display that reflects the overlapping time shown on the display terminal 4 after overlapping in the height direction. The overlapping management screen displayed on the display terminal 4 can be switched to a user-friendly display such as a bird's-eye view as shown in Figure 10(a), a plan view as shown in Figure 10(b), or a side view as shown in Figure 10(c), allowing users to check whether the overlapping time is within the allowable time and where there are areas where overlapping should be done urgently.

[0070] Next, the operation of the concrete pouring management support device 1 of this embodiment will be described. The concrete placement management support device 1 of this embodiment, configured in this way, includes a concrete measurement unit that measures the height of the top surface of the concrete along with the time, and a compaction time acquisition unit that acquires the start and end times of compaction by the vibrator B. Based on these measurement results, the concrete compaction ranges R1 and R2 can be identified. In addition, the concrete placement management unit manages the concrete placement time.

[0071] Furthermore, the display terminal 4, which displays information regarding the compaction range and pouring time, makes it possible to visually identify the overlapping area (compactment overlap area W) of the upper and lower poured concrete sections, allowing for easy confirmation of the continuity of the compaction range of the upper and lower poured sections.

[0072] In detail, on the compaction management screen of display terminal 4, the lower end of the compaction range R2 of the upper concrete layer is displayed semi-transparently and overlaps with the upper end of the compaction range R1 of the lower concrete layer. The compaction management screen can be switched to various viewpoints, such as bird's-eye view, side view, and plan view, allowing workers M performing concrete placement work and managers to easily check the continuity and length of the compaction lap area W in real time.

[0073] Furthermore, the concrete pouring management screen on display terminal 4 can display information that reflects the pouring time. Specifically, the concrete pouring management screen changes its display format according to the elapsed time since concrete pouring, and stops changing the display format once the pouring time is determined. The concrete pouring management screen can also be switched to various viewpoints, such as aerial view, side view, and plan view.

[0074] Therefore, workers M and supervisors performing concrete pouring can easily and visually check in real time whether the allowable time for pouring has not elapsed or if there are areas where the remaining time is running low. They can then prioritize pouring in areas where the allowable time for pouring is approaching.

[0075] Furthermore, if the reference point is a marker 22 attached to the cable B1 of the vibrator B, and a positioning system is employed in which the reference point measurement unit photographs the marker 22 with multiple video cameras 21 to perform motion capture, then highly accurate 3D coordinates can be acquired without restrictions such as the sky being open.

[0076] Furthermore, if a laser distance meter 3 is used to measure the concrete surface C by the concrete measurement unit, the concrete surface C, which fluctuates within the formwork where light levels are low, can be measured with high accuracy.

[0077] Furthermore, if the start time of compaction is set to the time when the switch 33 of the measuring instrument 31 is turned on after the area is ready for compaction by the vibrator B, and the end time is set to the time when the switch 33 of the measuring instrument 31 is turned off, then the actual time during which compaction was effectively performed by the vibrator B can be accurately recorded.

[0078] While embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and any design modifications that do not depart from the spirit of the present invention are included in the present invention.

[0079] For example, in the above embodiment, the compaction time was described in which it is determined by turning the switch 33 of the measuring instrument 31 on and off. However, the system is not limited to this, and the compaction time may be managed in conjunction with the switch of the vibrator B. Furthermore, the compaction time can be automatically detected by a sensor such as an inclinometer. For example, an inclinometer can be installed in the measuring instrument 31, and if the length of the continuous time during which the inclination angle is 5° or less while the vibrator B is operating reaches the required compaction time, the system can determine that compaction is complete. [Explanation of symbols]

[0080] 1: Concrete pouring management support device 21: Video camera (reference point measurement unit) 22: Marker 3: Laser distance meter (concrete measurement unit) 4: Display terminal (display unit) B: Vibrator B1: Cable C: Top surface of concrete R1, R2: Compaction range W: Compaction wrap area Ha-Hd:Display format

Claims

1. A concrete placement management support device for managing the placement of cast-in-place concrete, A reference point measurement unit measures the three-dimensional coordinates of a reference point along with time to determine the position of a vibrator used to compact the poured concrete, A concrete measuring unit that measures the height of the top surface of the concrete over time from a position where the positional relationship with the aforementioned reference point can be identified, A compaction time acquisition unit that acquires the start time and end time of compaction managed by the vibrator, A compaction range identification unit that identifies the compaction range of the concrete based on the measurement results of the reference point measurement unit, the concrete measurement unit, and the compaction time acquisition unit, A concrete pouring management unit manages the pouring time based on the upper surface height measured by the concrete measuring unit, It includes a display unit that displays the compaction range and the repeated pouring time, The concrete pouring management support device is characterized in that the display unit allows for visual confirmation of the length of the compaction overlap area where the compaction ranges of the concrete poured in layers overlap each other, and also allows for a display that reflects the pouring time.

2. The concrete pouring management support device according to claim 1, characterized in that the display unit changes the display format according to the length of time elapsed since the concrete was poured, and the change in the display format stops when the pouring time is specified.

3. The concrete pouring management support device according to claim 1 or 2, characterized in that the compaction lap area is displayed in a display format that allows the compaction range of the concrete of at least one of the upper and lower layers to be seen through the display unit.

4. The reference point is a marker attached to the cable of the vibrator, The concrete pouring management support device according to claim 1 or 2, characterized in that the reference point measurement unit measures the three-dimensional coordinates by photographing the marker with multiple video cameras.

5. The concrete pouring management support device according to claim 4, characterized in that the concrete measuring unit is a laser distance meter mounted at a predetermined distance below the reference point.

Images