JP5406090B2 - Concrete placement management system - Google Patents

Description

  The present invention relates to a concrete placement management system for managing the stacking time interval of each layer when the concrete is driven into two or more layers.

  Conventionally, when placing concrete, such as walls, large slabs and footings, the concrete is divided into two or more layers, and the stacking is performed in which each layer is placed over the whole. In this case, if the upper layer is stacked for a long time or if the outside air temperature is high, the lower layer concrete starts to harden after the upper layer concrete is hardened. However, the lower layer and the upper layer cannot be sufficiently adhered to each other, which may cause a cold joint, a jumper, a bean plate, or the like.

For this reason, the following Non-Patent Document 1 stipulates that when concrete is driven in two or more layers, it must be constructed so that the upper layer and the lower layer must be integrated, and a cold joint does not occur. The construction area, concrete supply capacity, allowable stacking time interval, etc. must be determined. Here, the allowable stacking time interval is the time from the completion of placing and compacting the lower layer concrete until the upper layer concrete is driven across the standing time, as shown in Table 1. In addition, a standard value of the allowable overlapping time interval according to the outside air temperature is determined.

  In addition, various management systems and the like have been developed in order to perform the stacking that satisfies the allowable stacking time interval. For example, in Patent Document 1 below, in the case where concrete is overlaid in multiple portions at the same location, the elapsed time from the previous placement to the next placement satisfies a predetermined allowable period. There is disclosed a concrete construction management support system that includes a determination unit that determines whether or not a failure has occurred and a notification unit that notifies a warning when it is determined that the determination unit has not been satisfied.

JP 2005-234664 A

Japan Society of Civil Engineers Concrete Committee, Concrete Standards Manual [Construction] established in 2007, Japan Society of Civil Engineers, March 2008

  However, in the system described in Patent Literature 1, when concrete is overlaid, the first placement start time for any one of the sections in which the first placement start time information is stored. The information is read from the overstrike interval management information database, the difference between the time at this point and the placement start time indicated by the first placement start time information is calculated as the elapsed period, and the elapsed period calculated in the next step Is determined to be shorter than the predetermined permissible period which is shorter than the upper limit upper limit period by a predetermined period (10 minutes in the present embodiment). The access information corresponding to the caster is read, and for the PDA possessed by the concrete caster, the overlap shot interval of the section to be processed is the standard finish. The position of the location where the tube tip operator is currently placing and the location where the stacking time interval is approaching the predetermined permissible period is output. The relationship was not clear and it was difficult to grasp the overall order of placement.

  In addition, as an example of notification when the elapsed time from the start of the first placement is less than the predetermined period, the PDA display shows that “the overstrike interval of section number 01 is later XX minutes and does not satisfy the standard specification. Because it is displayed by the characters “.”, It is difficult to quickly grasp visually where the section number 01 is.

  On the other hand, there is no means for accurately grasping the stacking time at the actual actual driving site, and monitoring of staff, confirmation of whether the driving is progressing as time passes based on the hammering design document, etc. The time to stack was grasped by. However, with such a management method, defects such as bean boards are often caused by delaying or forgetting to place the joints on walls, beams, pillars, etc. that have complex shapes often found in buildings. It may occur. Also, in civil engineering, if there was a gap in the placement due to delays in the live control car due to workers' breaks or traffic congestion, blockage of the live control pumping piping, etc., there was a possibility that the quality would deteriorate due to the incorrect placement order. .

  Therefore, the main problem of the present invention is to improve the quality of the concrete structure by accurately managing the stacking time interval until the stacking, and to place the concrete that enables visual grasp of the entire placing site. To provide a management system.

In order to solve the above-mentioned problem, as the present invention according to claim 1, a marker attached to a cylinder tip position for identifying a position of a cylinder tip operator for operating a hose cylinder tip for feeding green concrete, and a concrete placing site upward A video camera to be photographed from the side, an image sent from the video camera into a mesh shape and analyzed for each mesh unit, and the output is controlled, and an analysis result of the analysis control device is analyzed by the mesh And display monitor to display with
In the analysis control device, the pipe tip operator identifies the mesh that is currently being placed from the position of the marker, manages the elapsed time from the completion of placement for each mesh, and displays on the display monitor when the placement is complete. The concrete placement management system is characterized in that the mesh is displayed in a color-coded manner according to the elapsed time from the beginning.

  The invention according to claim 1 is a marker for identifying a cylinder tip position, a video camera for photographing a concrete placement site from above, an analysis control device for performing video analysis and output control from the video camera, It is comprised from the display monitor which displays the result. Then, in the analysis control device, the pipe tip operator identifies the mesh that is currently placed from the position of the marker, manages the elapsed time from the completion of placement for each mesh, and places the placement on the display monitor. The mesh is displayed in different colors for each stage according to the elapsed time from the time.

  Therefore, the elapsed time from the completion of placement can be accurately grasped, and the overlapping time interval can be managed with high accuracy. Thereby, generation | occurrence | production of the cold joint etc. by excess of a stacking time interval is suppressed, and the quality of a concrete structure can be improved. In addition, by managing the concrete placement site for each mesh unit, it is possible to reduce management errors such as forgetting to put in a complicated shape portion and a difference in the placement order.

  In addition, the display monitor is displayed in stages according to the elapsed time from the completion of placement for each mesh unit, so it is possible to visually grasp the management of the overlay time interval of the entire concrete placement site. It becomes.

  As a second aspect of the present invention, the lighting state of the marker can be switched when the placement is completed, and when the lighting state of the marker is switched, the analysis control device determines when the placement is completed. A concrete placement management system according to claim 1 is provided.

  The invention according to claim 2 defines specific means for the analysis control device to recognize when the placement is completed, and the marker is switched from off to light at the start of placement, for example. When the lighting state of this marker is switched, such as switching from lit to off when completed, and when the lighting state of this marker is switched, in the previous example, analysis control is performed when switching from lit to unlit In the apparatus, the time of completion of placing is determined. In addition to this, switching of the lighting state of the marker may be switching of color, switching of shape and pattern, switching of wavelengths of infrared rays, and the like. Note that the cylinder head operator has a switching device such as a switch for switching the lighting state.

  According to a third aspect of the present invention, there is provided the concrete placement management system according to the first aspect, wherein the pipe tip operator is provided with a switch for transmitting a signal to the analysis control device when the placement is completed.

  The invention according to claim 3 defines other means for the analysis control device to recognize when the placement is completed, and transmits a signal to the analysis control device when the placement is completed to the tube tip operator. The switch is provided.

  As the present invention according to claim 4, the color-coded display includes at least a time when the placement is completed, a time attention that the elapsed time is close to a predetermined allowable overlap time interval, and the elapsed time. The concrete placement management system according to any one of claims 1 to 3, further comprising three or more stages at a time warning for warning that the vehicle has further approached the allowable overlay time interval.

  The invention according to claim 4 stipulates a suitable mode when the analysis control device displays the mesh in a stepwise manner according to the elapsed time from the completion of placement, for example, placement completion Color is displayed in at least three stages, such as sometimes blue, yellow as a time caution when 30 minutes before the allowable stacking time interval, and red as a time warning when 10 minutes before. is there.

  As described above in detail, according to the present invention, it is possible to improve the quality of the concrete structure by accurately managing the stacking time interval until the stacking, and to make it possible to visually grasp the entire placement site. A placement management system can be provided.

It is the schematic which shows the placement management system 1 which concerns on this invention. FIG. 10 is a monitor screen diagram illustrating a display example (part 1) of the display monitor. FIG. 11 is a monitor screen diagram illustrating a display example (No. 2) of the display monitor 7; FIG. 10 is a monitor screen diagram showing a display example (No. 3) of the display monitor 7;

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the placement management system 1 according to the present invention is connected to the tip of a pipe to which ready-mixed concrete is pumped from a concrete pump car or the like, and operates the tube tip of the hose 4 from which ready-mixed concrete is discharged. In order to identify the position of the cylinder tip operator 2 relative to the concrete placement site, a marker 3 attached to the cylinder tip position of the cylinder tip operator 2 and the like, a video camera 5 for photographing the concrete placement site from above, and the video camera 5 The image sent from is subdivided into a mesh shape, analyzed for each mesh unit, an analysis control device 6 (such as a personal computer) for controlling the output, and a display for displaying the analysis result of the analysis control device 6 together with the mesh And a monitor 7.

  The marker 3 is attached to a position that can be recognized from the video camera 5 such as an assistant or a hose tube tip, such as a tube tip position, for example, an upper end or a back of a helmet of the tube tip operator 2, and a light emitting device such as a light bulb or a light emitting diode (not shown). ) Can be lit. When the marker 3 is lit, the analysis control device 6 can identify the position of the tube tip operator 2 with respect to the concrete placing site by performing image analysis.

  It is preferable that a lighting state of the marker 3 can be switched by a switching device (not shown) provided at the hand of the tube tip operator 2. Examples of switching of the lighting state include switching of lighting / extinguishing, switching of colors and shapes, switching of patterns, switching of wavelengths of infrared rays, and the like. The switching of the lighting state of the marker 3 is performed at the start and completion of pouring of the ready-mixed concrete. For example, the marker 3 is switched from unlit to lit at the start of placing and the marker 3 is lit at the completion of placing. Can be switched from off to off.

  On the other hand, the marker 3 can be always lit. In this case, the marker 3 is used only for identifying the position of the pipe tip operator 2, and the start and completion of placing concrete are identified by switching a switch (not shown) provided in the pipe tip operator 2. This is performed by a signal transmitted to the analysis control device 6 in the system.

  The video camera 5 is capable of shooting a moving image such as a digital video camera, can communicate with the analysis control device 6 by wire or wirelessly, and the captured video is transmitted to the analysis control device 6 in real time. Yes. The video camera 5 is installed at an obliquely upper position slightly apart from the placement site so that the entire concrete placement site can be looked over and the captured image is as planar as possible. If the entire site cannot be shot with a single video camera, a plurality of similar management systems are installed and the site is divided and managed. Moreover, the video image | photographed with the several video camera 5 ... may be collected on one analysis control apparatus 6, and you may make it synthesize | combine these video | videos.

  In the analysis control device 6, the cylinder tip operator 2 identifies the mesh that is currently being placed from the position of the marker 3, and manages the elapsed time from the completion of placement for each mesh. The mesh is color-coded for each stage according to the elapsed time.

  The analysis control result is transmitted from the analysis control device 6 in a wired or wireless manner and displayed on a display monitor 7 such as a personal computer. It can also be displayed on a portable device (not shown) carried by a field worker such as the tube tip operator 2.

  As described above, the present management system 1 subdivides the image captured by the video camera 5 into a mesh shape and color-codes the inside of the mesh. Therefore, it does not require time-consuming prior preparation such as three-dimensional drawing. Preparation is completed by simply installing the video camera 5 etc. on the morning of the installation day.

  Next, a concrete placement management method using the placement management system 1 will be described in detail based on the monitor screen diagrams shown in FIGS. As shown in FIG. 2, in the portion where the placement of the first layer of concrete is completed, the inside of the mesh is color-coded, for example, blue. For this reason, it is possible to determine at a glance whether a part is not placed and whether the progress is known. Moreover, in a complicated shape portion, management mistakes such as forgetting to strike and a difference in placing order can be reduced.

  Thereafter, FIG. 3 shows a state when the first layer has been placed, and FIG. 4 shows a state in which part of the second layer has been placed. As described above, in the portion where the placement is completed, the color in the mesh sequentially changes according to the difference from the allowable placement time interval with the lapse of time from the blue color when the placement is completed.

  The color classification in the mesh is, for example, from blue when the placement is completed, green when the elapsed time from the completion of placement is 60 minutes before a predetermined allowable stacking time interval, and 30 minutes before It can be displayed as yellow as a time warning when it becomes, and red as a time warning when 10 minutes ago. For this reason, it is possible to grasp at a glance which range is close to the stacking time interval, improve the quality by accurately controlling the stacking time interval, and manage the stacking time interval of the entire installation site. It becomes easy to grasp visually.

  Also, as shown in FIG. 4, when the second layer is overlaid, the inside of the mesh is repainted in blue, and measurement of the difference from the next layer is repeated.

  DESCRIPTION OF SYMBOLS 1 ... Placing management system, 2 ... Pipe tip operator, 3 ... Marker, 4 ... Hose, 5 ... Video camera, 6 ... Analysis control apparatus, 7 ... Display monitor

Claims (4)

Marker attached to the cylinder tip position to identify the position of the pipe tip operator that operates the hose pipe tip for feeding the ready-mixed concrete, a video camera for photographing the concrete placement site from above, and an image sent from the video camera Are divided into meshes and analyzed for each mesh unit, an analysis control device that controls output, and a display monitor that displays the analysis results of the analysis control device together with the mesh,
In the analysis control device, the pipe tip operator identifies the mesh that is currently being placed from the position of the marker, manages the elapsed time from the completion of placement for each mesh, and displays on the display monitor when the placement is complete. A concrete placement management system, characterized in that the mesh is color-coded for each stage in accordance with the elapsed time since.   2. The concrete according to claim 1, wherein the lighting state of the marker can be switched when the placing is completed, and when the lighting state of the marker is switched, the analysis control device determines when the placing is completed. A placement management system.   The concrete placement management system according to claim 1, wherein the pipe tip operator is provided with a switch for transmitting a signal to the analysis control device when the placement is completed.   The color-coded display includes at least a time when the placement is completed, a time attention that the elapsed time is close to a predetermined allowable overlap time interval, and the elapsed time is further added to the allowable overlap time interval. The concrete placement management system according to any one of claims 1 to 3, wherein the concrete placement management system comprises three or more stages at the time of warning for approaching.