JP6588869B2 - Concrete slab finish height management device - Google Patents

Description

  The present invention relates to a measuring device for buildings such as roads and highways, and more particularly to a concrete slab finished height management device that measures changes over time. Specifically, the present invention relates to a concrete floor slab finish height management device that manages the finish height of a concrete slab under construction.

  The floor slab will be constructed in the following steps. First, a floor slab form and a side form are assembled as a form on the bridge girder and pier. Then, the reinforcing bars are arranged on the floor slab formwork, and the reinforcing bars are bound with a thin wire or the like. This reinforcing bar resists the tensile stress generated in the concrete slab. In the case of a large-scale formwork, the formwork includes joists, large draws, and support pillars in addition to the siding board that is a plate-shaped component that contacts the concrete and the horizontal and vertical flats that support the formwork. The inner surface of the dam is coated with oil, resin, or the like so that the concrete can be easily peeled off when completed.

  As the dam plate, steel, resin, paper, concrete, and plywood are used. When placement of the reinforcing bars is completed, concrete placement is performed in which raw concrete is driven into the formwork. This concrete placement is called concrete placement and may be done manually, but it is generally performed by a dedicated machine such as a concrete pump car. In order to manage the concrete so that the concrete is at the design height in the formwork when this concrete is placed, an operator confirms the mark provided on the sill plate of the formwork or in the formwork. While driving concrete. Lastly, the final finishing is performed, in which the worker manually adjusts the height of the concrete placed while looking at the landmark.

  In order to guarantee the quality of concrete structures, it is important to manage the finish of the concrete placement. In particular, there is a need for a technique for managing the finish of concrete placement in real time. Many techniques have been disclosed as techniques for managing the finish of concrete placement. For example, a concrete placement management system that disposes a sensor in a concrete placement space and measures a distance from a concrete surface that is displaced upward from below when concrete is placed is disclosed (for example, Patent Document 1). The concrete height is calculated based on the measurement value output from the sensor and displayed in real time on the screen of the calculation display device.

  Further, Patent Document 2 discloses a concrete floor slab finish height management method that measures and manages a change over time in the surface height of concrete placement for buildings such as roads and highways. Specifically, the height of the surface of the placed concrete floor slab is measured with a laser range finder, and the target target surface height and the casting surface that is the surface already placed are displayed on the display. Displays the difference in height. At this time, a prism is placed at a point that becomes the reference for finishing the surface of the concrete floor slab, and it is used as a reference value when measuring the surface of the concrete form with a laser range finder. It is used for. The indicator identifies and displays the difference in height between the target height of the concrete slab surface and the height of the placement surface, which has already been placed, according to the degree.

JP 2009-83353 A JP 2013-19202 A

  The concrete placement management system of Patent Document 1 measures the distance between the sensor and the concrete surface in the region immediately below the sensor. This system is not suitable for placing concrete in a wide area such as a concrete building such as a road or a highway, because a large number of sensors need to be arranged. The concrete floor slab finish height management method of Patent Document 2 identifies the difference between the target height of the concrete floor slab surface and the height of the placement surface that has already been placed according to the degree of the difference. However, a prism is placed at a point that becomes the reference for finishing the surface of the concrete slab, and it is used as a reference value when measuring the surface of the concrete form with a laser range finder.

  For this reason, it takes time and effort for the worker to arrange the prism, and the finishing height of the concrete slab is not locally displayed. In this way, even when placing concrete in a wide area such as a road or an expressway, the concrete placement is managed in real time, and the target surface height of the target concrete placement and the surface that has already been placed There is a need for technology that displays the difference in height from the placement surface and conveys the finished height of the concrete slab to the workers on site in an easy-to-understand manner.

The present invention has been made based on the technical background as described above, and achieves the following objects.
An object of the present invention is to provide a concrete floor slab finished height management device that measures and manages changes with time of the concrete placement surface height for buildings such as roads and highways.

In order to achieve the above object, the present invention employs the following means.
The concrete floor slab finish height management device of invention 1 of the present invention is:
In order to construct a concrete floor slab, in concrete placement in which concrete is poured into a formwork,
Laser surveying means for measuring the surface of the concrete floor slab placed during the concrete placement;
(A) A design value representing design coordinates of the measurement point where the measurement is performed is calculated from design coordinates of four or more design points around the measurement point, and (b) the measurement point is A calculation means for comparing and calculating the measured value, which is a coordinate when measured, with the design value;
Using the calculated result, the difference between the height of the target surface of the concrete placement that is the target composed of the design value and the placement surface that is the surface that has already been placed, or the target measured value of the management line from a management line over the surface, characterized in that it consists of a display means for displaying the flatness displaced.

The concrete floor slab finish height management device of the invention 2 of the present invention is the invention 1,
When calculating the flatness, the calculation means calculates a design line connecting the two points from the design coordinates of two points in the vicinity of the measurement value, and calculates a design value of the measurement value from the design line. It is characterized by.

The concrete floor slab finish height management device of invention 3 of the present invention is the invention 1,
The calculating means includes
(C) The surface of the concrete slab is meshed and divided into a plurality of cells having a predetermined size, and a design center point, which is a design value of the center point of one cell, is set in or near the cell. From the design coordinates of the four design points , calculated to obtain,
(D) A measurement value at the measurement point closest to the design center point is obtained as a cell measurement value that is a measured value of the cell;
(E) Comparing and calculating the design center point and the cell measurement value and outputting a cell comparison calculation result;
The display means displays the difference between the height of the target surface and the height of the placement surface using the cell comparison calculation result.

The concrete floor slab finish height management device of invention 4 of the present invention is the invention 3,
The calculating means includes
(C) The surface of the concrete slab is meshed and divided into a plurality of cells having a predetermined size, and the design center point that is a design value of the center point of one cell is in or near the cell. Calculated from the design coordinates of the four design points of
Coordinates of the design center point, and obtaining from the design coordinates of the design point of the 4 points surrounding it.

The concrete floor slab finish height management device of the invention 5 of the present invention is the invention 1 to 4,
The display means is characterized in that the difference between the target surface and the placement surface is differently displayed by one or more emphasis methods selected from colors, symbols, characters, and hatching.

According to the present invention, the following effects can be obtained.
According to the concrete floor slab finish height management device of the present invention, it is easy to measure and manage the finish of concrete placement, especially the change over time of the height.
Further, according to the concrete floor slab finish height management device of the present invention, the concrete placement is managed in real time, and the target surface height of the target concrete placement, and the placement surface which is the already placed surface, The difference in the height of the floor was displayed, and the finished height of the concrete slab could be communicated in an easy-to-understand manner to the workers on site.

Furthermore, according to the concrete floor slab finish height management device of the present invention, the concrete placement finish, in particular, the change in height over time is measured and managed to improve the concrete placement finish quality and shorten the construction period. We were able to plan.
Furthermore, since design values and reference points are automatically input and measured with a laser range finder, there is no need to install a prism as a reference along both sides of the concrete placing surface as in the prior art.

FIG. 1 is a conceptual diagram showing an operation status of the concrete floor slab finished height management device 1 according to the first embodiment of the present invention. FIG. 2 is a flowchart showing an example of a procedure showing the entire flow when managing the concrete placement height in the concrete floor slab finish height management apparatus 1 according to the first embodiment of the present invention. FIG. 3 is a conceptual diagram illustrating an outline of flatness measurement in the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention. FIG. 4: has shown the flowchart which shows the example of the procedure which performs flatness measurement in the concrete floor slab finishing height management apparatus 1 of the 1st Embodiment of this invention. FIG. 5 is a diagram showing an example of flatness measurement performed by the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention. FIG. 5A is obtained by flatness measurement. FIG. 5B is a diagram illustrating an example of a flatness deviation value, and FIG. 5B is a diagram illustrating an example of a measurement result of flatness measurement. FIG. 6 is an example of a screen for displaying the state of flatness measurement on the display 9 of the computer 3 in the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention. FIG. 7 is a conceptual diagram illustrating an example in which the concrete placement surface is meshed to form cells in the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention. FIG. 8 is a conceptual diagram showing an example of obtaining the height of the cell center point on the concrete placing surface in the concrete floor slab finished height management device 1 according to the first embodiment of the present invention. FIG. 8A is a conceptual diagram illustrating an example of the positional relationship between the design point, the measurement point, and the cell center point, and FIG. 8B is a conceptual diagram illustrating an example of obtaining the height of the cell center point from the design point. FIG. 9 is a flowchart showing an example of calculating the height of the camber on the concrete placing surface in the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention. FIG. 10 is a diagram showing an actual example of camber measurement performed by the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention. FIG. 10A is an example of the camber value obtained by camber measurement. FIG. 10B is a diagram illustrating an example of a measurement result of camber measurement. FIG. 11 is an example of a screen for displaying the state of camber measurement on the display 9 of the computer 3 in the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention. FIG. 12 is a block diagram showing an outline of the structure of the construction management program 4 in the concrete floor slab finished height management apparatus 1 according to the first embodiment of the present invention.

[First Embodiment]
Hereinafter, a first embodiment of a concrete slab finished height management apparatus 1 according to the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing an operation status of the concrete floor slab finished height management device 1 according to the first embodiment of the present invention. The concrete floor slab finished height management device 1 is used for concrete placement for a concrete floor slab in which a concrete floor slab is constructed on a bridge girder or a pier.

  The concrete floor slab finish height management device 1 mainly analyzes and processes a laser range finder 2 that is a device for measuring concrete slabs and the like and measurement data measured by the laser range finder 2. The computer 3 for The computer 3 incorporates a construction management program 4 and analyzes the measurement data using this program. Concrete structures such as the road 5 are constructed by placing concrete floor slabs on the bridge girders and piers 6. In particular, in a viaduct, a bridge girder (not shown) is installed on a pier 6 installed on the ground surface, and a concrete formwork 7 is assembled on the bridge girder.

  Concrete formwork 7 consists of a floor slab formwork and a side formwork. Reinforcing bars 8 are arranged on the floor slab formwork, and concrete is driven into the concrete formwork 7. The concrete formwork 7 is for maintaining the shape until the concrete is hardened. The concrete formwork 7 is basically disassembled and removed after a predetermined training period elapses after the concrete is placed. In the case of a large-scale formwork, the concrete formwork 7 includes a joist, an overhang, and a support post in addition to the siding board that is a plate-shaped part that contacts the concrete, and the horizontal and vertical form that supports the formwork. . The inner surface of the dam is coated with oil, resin or the like so that the concrete is easily peeled off when completed.

  As the dam plate, aluminum, stainless steel, resin, paper, concrete, and plywood are used. However, since the construction work of the concrete mold 7, the material of the concrete mold 7, etc. are not the gist of the present invention, detailed description is omitted. The concrete floor slab finish height management device 1 basically includes a laser range finder 2 and a computer 3. When concrete is driven into the concrete formwork 7, the concrete floor slab finish height management device 1 lasers the height of the concrete placement surface, such as the surface where the concrete has been placed, the surface where the concrete has been placed, etc. Measurement is performed by the distance measuring device 2, and the measured data is displayed on a display 9 as a display device of the computer 3.

  The display 9 displays the design values, measurement data, displacement values of the design values and measurement data, and the like when placing concrete in an easy-to-see manner. For example, as shown in FIG. 3, a management line Lc that is a design value, a measured value that is an actual placement result (placement result line Ls), and a bulge and a dent that are displacement values thereof are displayed. If this bulge and dent are highlighted and displayed with colors, lines, etc., it will be easier for the manager at the site to see and the progress of the construction will be easier to understand. The manager at the site observes the surface height of the concrete placement displayed on the display 9 so that the concrete placement matches the design value or the preset reference value.

  In other words, the site manager can instantly grasp whether or not the concrete placement matches the design value by looking at the surface height of the concrete placement displayed on the display 9. The laser distance measuring device 2 is mounted and fixed on the tripod 2a. The tripod 2a on which the laser rangefinder 2 is mounted is installed in the vicinity of the concrete placement site. For example, as shown in FIG. Can be arranged. The laser range finder 2 and the computer 3 have a communication function for performing bidirectional communication with each other.

  In the first embodiment of the present invention, the laser range finder 2 performs wireless two-way communication with the computer 3, but has a wired communication function in which the laser range finder 2 and the computer 3 are connected by a communication cable or the like. The laser distance measuring device 2 may be provided. The laser range finder 2 includes an antenna 2b for wireless communication. The computer 3 includes an antenna (not shown) for wireless communication. The laser range finder 2 communicates with the computer 3 via the antenna 2b and the antenna of the computer 3. For communication between the laser distance measuring device 2 and the computer 3, for example, a general-purpose wireless communication method such as wireless LAN, Wi-Fi (registered trademark), Bluetooth (registered trademark) or the like is used.

  In this example, Bluetooth will be described as an example. The computer 3 can also communicate with a management center (not shown) via an antenna. The management center includes the computer 3, the laser range finder 2, etc., and manages the overall operation of the concrete floor slab finished height management apparatus 1. The laser range finder 2 generates laser light and irradiates the measurement object, and detects the reflected laser light reflected by the measurement object to perform measurement.

  The laser beam is irradiated and reflected from the laser distance measuring device 2 in a substantially straight line, and is shown by a broken line extending from the laser distance measuring device 2 in FIG. As the laser distance measuring device 2, a general-purpose device is used as represented by a total station. An example of the total station is the SRX total station series manufactured by Sokkia Topcon Corporation (head office: Itabashi-ku, Tokyo). Further, many surveying / measurement techniques for roads, buildings, etc. are disclosed, such as “Road section continuation device and road section measurement method” disclosed in Japanese Patent No. 4059832.

  The concrete floor slab finished height management device 1 according to the first embodiment of the present invention can also employ any known measuring method capable of measuring the height of the reference point and the concrete placing surface. In the first embodiment of the present invention, the concrete floor slab finished height management apparatus 1 employs all or part of the measuring method disclosed in Japanese Patent No. 4059832. As the laser range finder 2, a Leica Nova M S50 multi-station device manufactured by Leica Geosystems AG (Headbrugg, Canton St. Gallen, Switzerland) can be used.

  This multi-station apparatus is equipped with a three-dimensional scanning function and has a function of calculating and outputting a displacement amount of a surface measured a plurality of times, and can perform non-prism measurement. In the concrete floor slab finished height management device 1 of the present invention described below, the function of this multi-station device can be used. The structure of the laser range finder 2 to be described is a general-purpose structure. If the same function can be realized even if there is a difference in the structure, as the laser distance measuring device 2, a known measuring device, a distance measuring device, a surveying device, or the like can be used.

  In the following, the outline of the structure of the laser rangefinder 2, the measuring method, etc. will be briefly described, and the detailed structure and measuring method will be omitted because they are general-purpose devices. The laser rangefinder 2 includes a laser beam (phase) detection distance calculator (not shown). The laser light detection distance calculator includes a laser projector for oscillating projection laser light, a two-axis rotation servo mechanism for controlling the optical axis to a two-dimensional angle corresponding to the projection direction of the laser projector, laser projection A laser projection angle electronic control system that controls the angle according to a program and a light wave phase analysis distance calculator that detects the reflected laser beam and measures the phase are provided.

  The reflected laser beam reflected from the measurement target point (not shown) reflected by the projection laser beam projected from the laser projector is received by the light wave phase analysis distance calculator. The light wave phase analysis distance calculator calculates the difference between the mechanical origin (reference point) set in the laser rangefinder 2 and the measurement target point based on the phase difference corresponding to each of the reflected laser beam and the projected laser beam. The distance (R) is calculated and output as measurement data. The measurement data has three-dimensional polar coordinate data (R, θx, θy), and the distance R is measured corresponding to the two-dimensional angular coordinates (θx, θy). Data R is represented as R (θx, θy).

  The three-dimensional polar coordinate data (R, θx, θy) is a combination of the two-dimensional angle data (θx, θy) output from the laser projection angle electronic control system and the distance data R output from the light wave phase analysis distance calculator. Is generated by a three-dimensional polar coordinate data generator. The three-dimensional polar coordinate data generator can generate time-series three-dimensional polar coordinate data (R (t), θx, θy) or (R (t, θx, θy), θx, θy). The time t is given by a clock (not shown) built in the calculator 5 or the laser light wave detection distance calculator.

  The laser distance measuring device 2 transmits the measured measurement data to the computer 3. Although not shown, the computer 3 includes a central processing unit (hereinafter referred to as CPU), a main storage (RAM), a ROM, a communication bus, an input device, a display 9 as a display device as an output device, and various communication interfaces. Electronic computer. In the first embodiment of the present invention, the main body of the computer 3 includes a CPU, a RAM, a ROM, a communication bus, and various communication interfaces.

  The main body of the computer 3 has an auxiliary storage device such as a built-in and / or external hard disk and a nonvolatile memory. Although not shown, this auxiliary storage device is connected to a communication bus with a predetermined interface, and stores a construction management program 4 which is application software necessary for managing the finished height of the concrete slab. The construction management program 4 has a function of reading concrete floor slab design data and displaying the placement site, and a function of inputting concrete floor slab design data and displaying the placement site on the display 9.

  The construction management program 4 also has a function of displaying the measurement data measured by the laser rangefinder 2 and the three-dimensional or two-dimensional figure calculated from the measurement data on the displayed placement site. The auxiliary storage device of the computer 3 stores communication software for controlling communication when the computer 3 communicates with the laser distance measuring device 2 and / or the management center. These softwares are called from the basic software that controls the computer 3 and operate. The main body of the computer 3 includes a built-in power supply unit (not shown) for supplying power to the computer 3.

  Although not shown, the input device of the computer 3 is a device such as a mouse, a keyboard, or a touch panel. The output device includes a display 9. The antenna of the computer 3 is preferably connected to the communication interface and built in the computer 3. As described above, the computer 3 includes the main body and the input device connected to the main body, the display 9, the antenna, and the like. However, the computer 3 may be an integrated type in which the main body is built.

  The computer 3 is an operating system for a general-purpose electronic computer such as Microsoft's Windows (registered trademark), open source LINUX (registered trademark), Apple's Mac OS (registered trademark), and Google's Android (registered trademark). , Apple's iOS (registered trademark), Mozilla Foundation's Firefox OS (registered trademark), Microsoft's Windows Mobile (registered trademark), and other basic software such as operating systems for tablet computers Works.

  As the computer 3, any electronic computer can be used as long as it can perform the processing described in the first embodiment of the present invention. The detailed operation of the computer 3 is omitted because it is not the gist of the present invention. In the first embodiment of the present invention, the computer 3 is used at a concrete placement site, and is most preferably a portable small electronic computer such as a notebook. Based on the measurement data transmitted from the laser rangefinder 2, the progress of concrete placement is displayed on the display 9 of the computer 3. Further, as described above, the design data of the concrete floor slab is displayed on the display 9 together with the actual progress of concrete placement measured by the laser rangefinder 2.

  At the time of this display, the difference between the height of the target surface targeted by the design data of the concrete slab and the height of the placement surface (measured value) that has already been placed is displayed. This difference is calculated as a displacement value. This placement surface is a height value measured at the measurement point 10 and becomes a measurement value. An operator or manager of concrete placement can immediately check whether the concrete placement is properly performed by looking at this display. That is, the value of the location where the concrete floor slab surface height is as designed and the location where the concrete floor slab surface height is low or high from the designed height can be confirmed.

[Self-position determination of laser rangefinder 2]
At the site, the laser range finder 2 is installed, and the coordinates of two reference points whose coordinates are known are input to the laser range finder 2. Alternatively, two reference points are measured by the laser distance measuring device 2 and input as reference points. For example, when the prism 11 fixed by the support rod 11a is installed at the reference point and measurement is performed, there is little error and data can be input reliably. This is to judge at the site according to the characteristics of the site. The laser distance measuring device 2 is installed in an arbitrary place around the site where the entire site can be seen and measured.

  The computer 3 calculates the self-position where the laser rangefinder 2 is installed by the backward intersection method. The backward crossing method is a well-known method, and the outline thereof will be described. The coordinates of the known point are input to the computer 3, and the laser distance measuring device 2 moves from the laser distance measuring device 2 to the prisms installed at two known points. The distance between the two distances and the depression angle formed by the straight line connecting the laser distance measuring device 2 and one known point and the straight line connecting the laser distance measuring device 2 and the other known point are calculated by the computer 3. Is obtained by calculating a reference point (mechanical origin) which is the self-position where the laser distance measuring device 2 is installed (see step 4 in FIG. 2).

  When construction on the road 5 progresses and concrete placement is performed, the laser distance measuring device 2 and the prisms 11 are respectively installed at two reference points whose coordinates are known in substantially the same manner as described above. A reference point (mechanical origin) that is the self-position is calculated by the computer 3 using the laser distance measuring device 2 and the prism 11. After measuring and calculating the self-position, the computer 3 obtains the projection angle at which the projection light is projected, in other words, the angle at which the laser rangefinder 2 is turned, in order to measure each measurement point 10 (surface). When the measurement point 10 is input to the computer 3 in advance, the projection angle is obtained using the coordinates of the measurement point 10.

  Since a range to be measured (hereinafter referred to as a scan range) is preset in the laser range finder 2, the laser range finder 2 measures each measurement point within the scan range. The laser range finder 2 has a function of automatically measuring at predetermined intervals within the scan range. For example, depending on the performance of the laser distance measuring device 2, the width of the road 5 under construction and the range up to 1000 m in the length direction of the road 5 can be set. Measure at intervals of. The laser range finder 2 performs measurement at, for example, vertical and horizontal intervals of 5 cm.

  When the scan range is widened, it takes time for measurement and the amount of measurement data increases, so that analysis and processing take time. Further, in the current performance of the laser distance measuring device 2, in order to realize the measurement performance in sub-mm units, it may take nearly 1 second to measure one measurement point separated by several hundred meters or more. Not right. Therefore, it is practical to set the scanning range measured by the laser distance measuring device 2 to be 3 to 10 m in the width direction of the road 5 and 300 m in the road length direction with a measurement error of 1 mm to 3 mm. Of course, if the performance of the laser rangefinder 2 is improved, the scanning range can be set to a wide range and the measurement error can be set small.

  When the prism 12 is installed around the center of the road 5, the laser distance measuring device 2 obtains the distance to the prism 12, obtains a line passing through the prism 12 therefrom, and places a predetermined number of measurement points 10 on this line. Looking for. In the case of FIG. 1, equally spaced measurement points 10 are illustrated as an example on a straight line 13 passing through the lower point of the prism 12. In addition, on the concrete surface that has already been placed, measurement points 10 that are equally spaced on a straight line 13 are illustrated as an example. The measurement point 10 becomes the center point of a mesh cell, which will be described later.

  As a result, the laser distance measuring device 2 measures the site from the place where it is installed, and the computer 3 can display it superimposed on the design data. After these series of measurements, the height of the concrete slab finish can be managed. The laser range finder 2 performs measurement by automatically turning within the preset scan range based on design data. The laser distance measuring device 2 can also perform measurement by automatically turning to the measurement point 10 received from the computer 3 and instructed. When the laser distance measuring device 2 finishes the measurement, the laser distance measuring device 2 transmits measurement data to the computer 3.

  The computer 3 displays data on the height of the finished concrete slab on the display 9 and outputs it in a predetermined form format, which is printed by a printer (not shown) or the like. The drawing displayed on the display 9 may be output as it is. Furthermore, the computer 3 can also transmit this form output to the management center using a communication function. The form output can be performed at an arbitrary timing during the measurement.

[Overall flow]
FIG. 2 is a flowchart showing a flow of managing the concrete placement height when placing concrete by the concrete floor slab finished height management device 1. First, the computer 3 is connected to a power source or its power button is operated to supply power to the computer 3 to operate the computer 3. When the computer 3 is operated, the construction management program 4 is read into the memory and the operation is started (step 1). When the construction management program 4 is operated, design data is input to the computer 3 (step 2).

  This design data is design data for constructing a concrete slab. The design data also includes design data for the concrete mold 7 and the reinforcing bars 8 as shown in FIG. The design data of the concrete slab is created in advance with dedicated design software. The design data is stored in a format dedicated to the design software or in a text format. The design data can be directly input to the computer 3 by the administrator from a paper medium or the like, but it is enormous data and is not practical. In the first embodiment of the present invention, it is assumed that the administrator can manually input all or part of the design data into the computer 3 without excluding manual input of the design data.

  In the first embodiment of the present invention, at least the design data input to the computer 3 can be manually corrected such as deletion, addition, correction, etc. by an administrator. Alternatively, the administrator can manually add a part of the design data, data on the site, and the like to the computer 3 manually. The design data created by the design software is stored in a built-in auxiliary storage device, a portable auxiliary storage device, or a network storage device of the computer 3, and is read from the storage location by the construction management program 4 operating on the computer 3. .

  The manager uses the construction management program 4 to input information about the site, site data such as a site reference point (step 3). Furthermore, the road width, length, etc. for the site management by the manager can be designated or input and displayed. The construction management program 4 reads this design data, and displays the concrete floor slab design data on the display 9 as a concrete floor slab finished height management site map. At that time, the construction management program 4 performs on-site installation position correction (a “rear intersection method” described later) based on the on-site reference point (step 4).

  Finally, a site map for managing the concrete floor slab finish height specified by the width and length of the road on the site is displayed on the display 9 and ready for measurement (step 5). Thereafter, measurement is started at the concrete floor slab finished height management site, and the laser rangefinder 2 performs site scanning (steps 5 and 6). For on-site scanning, each measurement point is scanned (measured) within a specified scan range. When the scanning of the on-site scan range by the laser rangefinder 2 is completed, data exchange is performed by transmitting measurement data to the computer 3 (step 7).

  The laser range finder 2 can perform measurement only once or periodically at a predetermined interval by being designated therein or by an instruction from the computer 3. In the example of the flowchart of FIG. 2, in the case of only one measurement, as soon as the scanning of the laser rangefinder 2 is completed, the data exchange is performed, the measurement is terminated, and the process proceeds to the next process (step 8 → step 11). ). In the case of periodic monitoring that is not a single measurement, it is confirmed whether or not the laser rangefinder 2 has reached the monitoring time (step 8 → step 9 → step 10). When the monitoring time is reached, on-site scanning is performed (step 10 → step 6).

  The laser distance measuring device 2 exchanges data with the computer 3 (step 7). If the monitoring time is not reached, the system waits while checking the time at predetermined time intervals until the monitoring time is reached (step 10 → step 9). The frequency of scanning can be arbitrarily set by an administrator instructing from the laser distance measuring device 2 or the computer 3. When the placement is finished, the laser rangefinder 2 is removed from the concrete placement site and the measurement is completed. The concrete floor slab finish height management by the concrete floor slab finish height management apparatus 1 according to the first embodiment of the present invention includes flatness measurement and camber confirmation.

[Measure and display flatness]
The flatness measurement is to measure a bulge or dent deviating from a design value on the finished surface of a concrete floor slab, in other words, a deflection. Flatness measurement is to measure and display whether the measured value deviates from the design value and has a bulge or a dent along one line in the specified direction of the finished surface of the concrete floor slab, especially the width direction of the road. is there. In order to measure the deflection of the concrete placement surface, the prism 12 is installed with a fixture such as a support bar 12a in the concrete floor slab finished height management location.

  Since the deflection of the concrete placement surface is managed along a straight line or a curved line, the support bar 12a with the prism 12 is installed on one line. For example, as shown in FIG. 1, a plurality of support bars 12a with prisms 12 are provided around the center of the concrete placing surface. An outline of the flatness measurement is shown in FIG. FIG. 3A shows a conceptual diagram of a top view of the surface 5a of the road 5 as the concrete placing surface. On the surface 5a, the management lines Lc and Lc 'are shown by broken lines. In this example, the management lines Lc and Lc ′ are linear.

  FIG. 3B shows a conceptual diagram of the management line Lc viewed from the side in the cross section of the concrete placing surface. The management line Lc is based on the design data and is a line along the surface of concrete placement. In other words, the management line Lc has a surface height that is a target for placing concrete. In FIG. 3, there are points L2, G1L, G1, G1R, and R2 on the management line Lc. Points G1L and G1R are points where X, Y, and Z coordinates are registered. The points L2, G1, and R2 are points where X and Y coordinates are registered, and are calculated from the coordinates of the points G1L and G1R to determine the heights of the points L2, G1, and R2.

  The point G1 is a point around the center of the concrete placing surface, in other words, located near the middle between the point G1L and the point G1R. Points L2 and R2 are points in the side surface direction of the road surface. The points L2, G1L, G1, G1R, and R2 are on one line, and this line can have an arbitrary angle with respect to the length direction of the road surface, but practically the length direction of the road surface. It is easy to operate that it is substantially perpendicular to. Therefore, as illustrated in FIG. 3A, the management line Lc is substantially perpendicular to the length direction of the surface 5a. The result obtained by the above-mentioned scanning is displayed by a placement result line Ls in FIG.

  If there is a difference between the placement result line Ls and the management line Lc, concrete placement is not performed correctly. For example, when the placement result line Ls is higher than the management line Lc, a difference d1 is generated, and the concrete placement surface can be swollen. On the contrary, when the placement result line Ls is lower than the management line Lc, a difference d2 is generated, and the concrete placement surface is recessed. If there is such a difference, the construction management program 4 highlights it by color coding or the like.

  FIG. 4 is a flowchart illustrating an example of a procedure for obtaining the flatness in the computer 3. First, the construction management program 4 starts calculation of flatness (step 20). First, the construction management program 4 receives concrete placement design data from an auxiliary storage device or the like, and calculates and calculates a design straight line on the concrete placement surface (steps 21 and 22). This design straight line is the management lines Lc and Lc ′ shown in FIG. This management line Lc is arranged on the concrete placement surface at a predetermined interval D and adjacent to the surface 5a in the length direction, and is displayed on the display 9.

  This distance D is variously determined according to the field situation of the concrete placing surface. Even if there is a standard value, it is recommended that the person in charge of construction at the site decides it finally. The reason is that the distance D is set from several meters to several tens of centimeters depending on the situation of the construction site of the road under construction. When there is a large local change such as a sharp curve on the road, it is better to shorten the interval D, particularly in a place where there are many vertical fluctuations. When calculating the height of each management line Lc, the height differs between adjacent lines, so it is better to make the interval D as short as possible. When the surface 5a of the road 5 is a plane, the distance D may be long.

  In this case, since there is almost no local change on the road surface, even if the distance D is long, the height calculation is hardly affected. Then, the construction management program 4 receives measurement data (measurement value at the measurement point) from the laser rangefinder 2 (step 23). Thereafter, the construction management program 4 uses the measurement data to determine the design coordinates of each measurement point from the design line (step 24). The measurement value at the measurement point is compared with the design coordinates (step 25). In this comparison, bulges, depressions, etc., such as the differences d1 and d2 shown in FIG. 3 are obtained, and the results are displayed on the display 9.

  In this display, highlighting is performed according to the lengths of the differences d1 and d2 (step 26). In other words, the measured value is compared with the design value and is highlighted according to the degree of swelling or dent. Although the highlighting is not limited, for example, it is displayed in different colors according to the lengths of the differences d1 and d2. For example, when the lengths of the differences d1 and d2 are very long, the color is displayed in red. When the lengths of the differences d1 and d2 are close to 0, the color is displayed in green. In the meantime, it can be displayed separately in colors such as yellow, blue, black and brown. Thus, the highlighting method is not limited to this, and can be arbitrarily set according to the situation at the site.

  When the highlighted display is displayed on the display 9, the administrator can easily grasp the degree of concrete placement on the road and the degree of progress. Thereafter, the construction management program 4 proceeds to the next process (step 27). FIG. 5 illustrates an example of the flatness value obtained by the construction management program 4. The flatness value can be displayed on the display 9 by operating the construction management program 4. The obtained flatness value is stored in the auxiliary storage device, and the stored flatness value can be acquired and displayed on the display 9 for browsing.

  Of course, this flatness value is evidence to prove the progress of concrete placement on site, and is stored and stored as time-lapse information. In FIG. 5, flatness values displayed on the display 9 are displayed in a table format. As shown in FIG. 5A, a table 50 indicating flatness values is displayed on the display 9. The first column 51 of the table 50 indicates each point of the management line Lc illustrated in FIG. 3, and the first row 52 indicates each management line Lc. Each cell of Table 50 displays the obtained flatness value. In this table 50, the deviation value of the flatness value is displayed.

  The deviation values of the flatness values are the difference d1 and the difference d2 in FIG. The deviation value of the flatness value is a positive value when the measured value is higher than the design value. The deviation value of the flatness value is a negative value when the measured value is lower than the design value. When the deviation value of the flatness value is equal to or greater than a predetermined value, the cell having the value is highlighted. For example, the cell 53 in Table 50 is hatched in FIG. 5A, but is displayed in blue on the actual display 9. The values of the cells highlighted in this way are all small values of −15 mm or less.

  In other words, the concrete placement surface is lower than the design value by -15 mm or less. Other cells such as the cell 54 are not hatched in FIG. 5A, but are displayed in green on the actual display 9. FIG. 5B shows actual measured values of flatness. The first column 51 of the table 55 in FIG. 5B (the same reference number as that in FIG. 5A is used because the same point value is displayed. The same applies hereinafter) is the management shown in FIG. Each point of the line Lc is shown, and the first row 52 shows each management line Lc.

  In each cell of Table 55, a measured value of flatness is displayed. The measured value of flatness is the height measured at each point in the first column 51. Among the cells, the same cells as those hatched in FIG. 5A are hatched and highlighted as in FIG. 5A. Thereby, the administrator can easily grasp the height at which the place corresponding to each cell is placed and whether the height is lower or higher than the design value.

FIG. 6 illustrates a screen 60 that is a display example of the display 9. On the screen 60, a first area 61 for displaying the status of the concrete floor slab finish height management, a second area 62 for selecting a value to be displayed, a third area 63 for indicating a height index, and a selection A fourth area 64 or the like for displaying the measured value is displayed.
The first area 61 includes an area 61 a that displays the operating state of the laser rangefinder 2, an area 61 b that indicates the type of measurement of the laser rangefinder 2, and the current time of measurement or a value that is displayed in the fourth area 64. There is an area 61c indicating the measurement time of the area 61d, an area 61d indicating the alarm level according to the degree of deviation of the measured value from the design value, and the like.

  The area 61a displays the operating state of the laser rangefinder 2 according to the operating state, such as “standby” when waiting, “measuring” when measuring, and the like. An area 61b indicates the type of measurement by the laser rangefinder 2. When it is set to measure the flatness of the concrete placing surface, it becomes “flatness”, and as shown in FIG. 11, it becomes “camber” in the case of camber measurement. The area 61c displays the current measurement time or the measurement time of the displayed data in the order of date and time.

  The area 61d displays the degree of alarm at a plurality of levels, and this displays the display level according to the difference between the measured value displayed in the fourth area 64 and the design value. In this example, the alarm level is “alarm LV3”. By referring to this level, it is possible to grasp how much concrete placement is from the design value. For example, when the alarm level is the maximum alarm level, in other words, when the alarm level is significantly different, the alarm level is increased.

  The second area 62 is used for selecting values to be displayed in the fourth area 64. The area 62a for selecting and displaying the design value and the displacement value of the measured value, and the area 62b for selecting and displaying the measured value. And an area 62c for selecting and displaying a design value (calculated value), an area 62d for selecting and displaying a color display indicating that the measured value deviates from the design drawing and the design value, and the like. In the case of a touch panel display, the area 62a to the area 62d may have a button for an operator to touch and select. The value selected in the second area 62 is displayed in the fourth area 64.

  The third area 63 is composed of marks indicating the degree of emphasis for emphasizing how much the measured value displayed in the fourth area 64 is from the design value. In this example, the mark indicating the degree of emphasis is displayed in color. The third region 63 is divided into a plurality of regions from the region 63a to the region 62b from the top, and each is a mark indicating the degree of emphasis. Each value displayed in the fourth area is highlighted by this mark. This display example has already been described with reference to color display in FIG.

  In the third area 63, as a mark for highlighting, in addition to color display, a specific figure, a character consisting of a symbol, a plurality of types of hatching, and a value to be displayed are displayed with a bold line to a thin line. The font size can be used. The mark for highlighting in the third region 63 may be highlighting in which the color gradually changes in an analog manner depending on the degree of highlighting. In the fourth area 64, the value selected in the second area 62 is displayed. In this example, the example illustrated in FIG. 5 is displayed.

  On the screen 60, below the fourth area 64, an area 65 for displaying a measurement state or a design showing a value displayed in the fourth area in a two-dimensional diagram or a three-dimensional diagram, and a fourth area 64 There is an area 66 having a selection / playback button for playing back the value displayed in the elapsed time, and an area 67 having a button for setting and ending the program. The flatness button 66a in the region 66 is a button that is operated to measure flatness or display the measured value. The camber button 66c in the area 66 is a button operated to perform camber measurement or display the measurement value.

  The play button 66b starts displaying the value selected in the fourth area 64 in time series. In the area 67, a button 67a for displaying measured past information, a button 67b for transitioning to a screen for setting a program or setting a display screen, a measured value or a display status of the screen 60, setting, and the like are displayed. There are a button 67c for saving, a screen 60 or a button 67d for ending the program. The upper right area 50 a of the fourth area 64 is an area indicating a unit of values displayed in the fourth area 64.

[Camber confirmation and display]
The concrete floor slab finished height management device 1 according to the first embodiment of the present invention performs concrete placement while three-dimensional scanning the concrete placement surface and confirming the camber. The camber sets the vertical position of the casting surface high in consideration of settlement due to concrete pouring or subsequent creep. In the present embodiment, camber confirmation or camber means that the concrete placement surface deviates from the design value.

  The concrete slab finished height management apparatus 1 according to the first embodiment of the present invention three-dimensionally scans a concrete placing surface, converts and corrects the scan result, and creates mesh information from the obtained data. . In this mesh, the surface of the concrete placement is regarded as one plane, and is divided into cells made up of predetermined geometric figures such as rectangles, squares, triangles, trapezoids, etc., and compared with the design values. . In the present embodiment, the concrete placement surface is divided into cells made of quadrangular figures.

  FIG. 7 illustrates an example of this mesh. The surface 5a of the road 5 is meshed with lines drawn at the same interval vertically and horizontally in the length direction. Here, a substantially rectangular area surrounded by two adjacent vertical parallel lines and the adjacent two parallel lines drawn substantially perpendicular to the two parallel lines is defined as a cell. In the example of FIG. 7, one cell is indicated by reference numeral 70. The center point of each cell is indicated by reference numeral 71. The cell center point 71 is displayed in a circle for easy understanding of the difference from the design point 72, but the coordinate of the center point is the cell center point 71. The cell center point 71 is an intersection of straight lines connecting two opposite corners of the cell 70.

  The design point 72 is a point indicating design data determined when the road 5 on which concrete is placed is designed, and is basically represented by three-dimensional coordinates. Data scanned by the laser rangefinder 2 is scanned at fine intervals basically. The mesh here may be the same interval as the scan, but in most cases, it is longer than the scanning interval (measurement point interval) of the scan range. A plurality of scan points are contained in the cell 70 of FIG. The mesh information is created by dividing the scan range into cells 70 of an appropriate size from the scanned scan range data.

  When meshing, when there is no measurement data in the cell 70, the construction management program 4 outputs an alarm indicating that there is no measurement data for the cell 70. Since the scanning accuracy, in other words, the scanning interval is not larger than the cell 70, such an error hardly occurs. If this occurs, this error can be solved by reducing the scan interval or increasing the size of the cell 70. Further, since there is a possibility that there is an obstacle at the position of the cell 70, the error cell 70 can be excluded from the subsequent processing.

[Flow of camber measurement and display]
FIG. 9 is a flowchart showing an example of a procedure for measuring the camber and displaying it on the screen when placing concrete by the concrete floor slab finished height management device 1. The terms used in the description of the flowchart are basically the same concepts as the terms described in the description of the flowcharts of FIGS. First, the computer 3 is connected to a power source or its power button is operated to supply power to the computer 3 to operate the computer 3.

  When the computer 3 is operated, the construction management program 4 is read into the memory and the operation is started (step 40). When the construction management program 4 is activated, design data is input to the computer 3 (step 41). The administrator uses the construction management program 4 to input the site data, specify the road width, length, etc., input, display, and correct the installation position of the site at the time of the above flatness measurement. These operations are omitted. If these operations are not performed, these operations are performed as described with reference to the flowcharts of FIGS. 2 and 4, and thus the description thereof is omitted here.

  The construction management program 4 meshes the placement surface to obtain the X and Y coordinates of the design of each cell center point 71 (step 42). Meshing is performed as shown in FIG. When the design coordinates of each cell center point 71 are determined, four surrounding design points are obtained from the cell center point (step 43). As shown in FIG. 8A, these four points are the cell center point c and points 1 to 4 that are the four surrounding points. Then, from these four surrounding points, the Z coordinate of the cell center point c is obtained (step 44).

  Then, the measured value of the cell center point c is compared with the measured value, and the measured value of the measurement point closest to the cell center point c is obtained (step 45). The measurement value of the measurement point closest to the cell center point c is set as the measurement value of this cell (step 45). Then, the coordinates X, Y, Z of the cell center point c are compared with the measured value of the cell (step 46). The result of this comparison is displayed on the display 9 (step 47). In this comparison, a value indicating how much the measured value of the cell is different from the design value is displayed on the display 9 as a displacement value, and the cell is highlighted according to the degree of the displacement value. Thereafter, the construction management program 4 proceeds to the next process (step 48).

  As described above, the surface 5a of the road 5 is meshed and divided into fine cells. Since meshing is performed two-dimensionally when the surface 5a is viewed from the top, each point of the mesh is given two-dimensional coordinates. In other words, the corner points of each cell of the mesh are given as two-dimensional coordinates (X, Y coordinates), and the two-dimensional coordinates (X, Y coordinates) of the cell center points are also obtained from this. Here, in order to compare each cell with the measured value, the coordinate in the height direction is necessary. In addition, the size of the cell does not necessarily have a design value at the corner, and a cell may completely enter or a plurality of cells may enter between adjacent design values.

  Therefore, when the center point of the cell is obtained and the design height of the center point is obtained, the heights of the four design points closest to the cell are used. In other words, the height of the cell center point is obtained from the heights of the four design points closest to the cell center point c. The four design points basically form substantially one plane, and in other words, the points located on this plane are the highest Z coordinate value and the lowest Z coordinate value of the four design points. Between. Therefore, the Z coordinate of the cell center point is obtained as follows.

  This determination method is illustrated in FIG. The calculation method is performed as follows. A line is drawn from the cell center point c to the four nearest design points surrounding it. The four nearest design points surrounding the cell center point c basically form a quadrangle, draw a vertical line from the cell center point c to each side of the quadrangle, and obtain the intersection of this vertical line and each side. In the example of FIG. 8B, a vertical line is drawn from the cell center point c to the line connecting points 1 and 2, the intersection is a point a, and the length of the vertical line is h1.

  Also, a vertical line is drawn from the cell center point c to the line connecting the points 3 and 4, the intersection is defined as a point b, and the length of the vertical line is h2. At this time, the Z-axis coordinate of point a, in other words, the height is obtained from the ratio of the Z-axis coordinate of point 1 and point 2, the length of point a and point 1, and the length of point a and point 2. It is done. Similarly, it is obtained from the ratio of the Z-axis coordinate of point b, the Z-axis coordinate of point 3 and point 4, the length of point b and point 3, and the length of point b and point 4. Therefore, when the Z-axis coordinates of the points a and b are determined, the Z-axis coordinates of the cell center point c are located between the Z-axis coordinates of the points a and b. The height of the cell center point c is determined by dividing the difference between the Z-axis coordinates of the points a and b by the ratio of the lengths of the vertical lines h1 and h2.

  Another method is that point 1, point 2, and point c form a triangle, and this triangle is on the X, Y plane with point c as the axis, and the line consisting of point 1 and point 2 is the X axis or Y axis. Rotate to be parallel. When parallel, the difference between the Y-axis or X-axis value of the point c and the Y-axis or X-axis value of the parallel line becomes h1. Then, a vertical line is drawn from the point c to the line consisting of the points 1 and 2, and the coordinates of the intersection are obtained. Thereafter, the triangle is rotated back at the same angle as the rotation angle, and the intersection obtained at that time becomes a point a, and the coordinates X and Y of the point a are obtained from the rotation angle.

  Point a is between the values of the Z-axis of point 1 and point 2, and the length of point 1 and point a and the length of point 2 and point a from the difference of the Z-axis of point 1 and point 2 From the ratio, the three-dimensional coordinates of the point a are obtained. Similarly, point 3, point 4, and point c form a triangle, and this triangle is rotated about the point c on the X and Y planes, and the line consisting of point 3 and point 4 becomes the X axis or Y Rotate to be parallel to the axis. When parallel, the difference between the Y-axis or X-axis value of the point c and the Y-axis or X-axis value of the parallel line becomes h2. Then, a vertical line is drawn from the point c to the line consisting of the points 3 and 4, and the coordinates of the intersection are obtained.

  Thereafter, the triangle is rotated back at the same angle as the rotation angle, and the intersection obtained at that time becomes a point b, and the coordinates X and Y of the point b are obtained from the rotation angle. Point b is between the values of the Z-axis of point 2 and point 3, and the ratio of the length of point 3 and point b and the length of point 4 and point b from the difference of the Z-axis of point 3 and point 4 From the three-dimensional coordinates of the point b. Finally, there is a Z-axis value at point c between the obtained point-a and point-b values on the Z-axis, and from the difference between the Z-axis values at points a and b, from the ratio of the lengths of h1 and h2. , The Z-axis coordinate of the point c is obtained. Therefore, the three-dimensional coordinates of the point c are determined.

  FIG. 10 illustrates an example of the camber value obtained by the construction management program 4. The camber value can be displayed on the display by operating the construction management program 4 or obtained from the auxiliary storage device and viewed. Of course, the value of this camber serves as proof of the progress of concrete placement on site and is stored and stored as time-lapse information. In FIG. 10, camber values displayed on the display 9 are displayed in a table format. As shown in FIG. 10A, a table 80 indicating camber is displayed on the display 9.

  The first column 81 of the table 80 indicates the cell column number on the vertical axis of the mesh (axis along the road), and the first row 82 indicates the cell row on the horizontal axis of the mesh (vertical axis perpendicular to the axis along the road). Numbers are shown. The intersection corresponds to each cell 83 shown in FIG. In each cell 83, the obtained displacement value is displayed. This displacement value indicates a value in which the measured value of each cell 83 deviates from the design value of the cell center point, in other words, the displacement value. In the case of a positive value, the measured value shows a value higher than the design value, in other words, the concrete placement becomes excessive and the bulge appears.

  In the case of a negative value, the measured value indicates a value lower than the design value. In other words, the concrete placement is not sufficient and is indented. Each cell 83 illustrated in FIG. 10A is hatched and highlighted in a plurality of types. On the actual display 9, it is displayed by color in accordance with hatching. The value of the cell highlighted in this way is a range in which the displacement value varies depending on the type of emphasis and the type of hatching. For example, in the case of the cell 84 hatched with a line extending from the lower left to the upper right, the displacement value is a value of 70 mm or more.

  In the case of the cell 86 hatched with a horizontal line, the displacement value is a value of 8 mm or less. In the case of the cell 85 hatched with a line extending from the upper right to the lower left, the displacement value is a value of 20 mm or more and 25 mm or less. Other cells that are not hatched are cells outside the above range. FIG. 10B shows actual measured values of the camber. FIG. 10B shows each cell 83 as in FIG. 10A, and the contents of each cell show a measured value. Each cell 83 is highlighted as in FIG.

  Thereby, the administrator can easily grasp the height at which the place corresponding to each cell 83 is placed and whether the height is lower or higher than the design value. FIG. 11 illustrates a screen 60 that is a display example of the display 9. The screen 60 is basically the same as FIG. 6 and is an example of displaying the camber value. Different from FIG. 6, the measured value, design value, displacement value, etc. of the camber are displayed in the fourth area 64. In the area 65, the coordinates of the selected cell displayed in the fourth area 64 are displayed. Once the placement is finished, the laser rangefinder 2 is removed from the concrete placement site and the measurement is completed.

[Configuration of construction management program 4]
The function of the construction management program 4 and its operation outline have been described as described above. The construction management program 4 can be composed of a plurality of modules that realize these functions as illustrated in FIG. FIG. 12 is a block diagram showing an outline of the structure of the construction management program 4 operating on the computer 3. The construction management program 4 includes a 3D scan control module 90, a coordinate result conversion / correction module 91, a result information analysis module 92, a flatness analysis module 93, and the like.

  The 3D scan control module 90 is a module for controlling the laser range finder 2. A function for confirming the position of the laser range finder 2, a function for sending a command to the laser range finder 2, performing a 3D scan, and laser measurement. A function of receiving measurement data as a measurement result of scanning performed by the distance machine 2 is provided. The 3D scan control module 90 often receives binary data when receiving measurement data from the laser range finder 2, but can also receive a text format or the like. And send it to the subsequent module.

  The coordinate result conversion / correction module 91 has a function of processing measurement data and performing a coordinate position correction process, a function of performing a rotation correction process, a function of creating three-dimensional coordinate information, and the like. The coordinate result conversion / correction module 91 performs the meshing process described above. The result information analysis module 92 includes a function for setting initial coordinates, a function for calculating a displacement amount from the initial coordinates, a function for displaying a calculation result on the display 9, a function for automatically processing an error in coordinate information, and the like. The flatness analysis module 93 includes a function for setting design coordinates, a function for calculating the flatness of the set surface, a design coordinate after completion of construction, a function for calculating a difference between measurement coordinates, and the like.

  As illustrated in FIG. 12, the 3D scan control module 90 transmits the measurement data received from the laser rangefinder 2 to the coordinate result conversion / correction module 91. The coordinate result conversion / correction module 91 processes the measurement data, and the result is used by both the result information analysis module 92 and the flatness analysis module 93. The result of processing the measurement data by the result information analysis module 92 and the flatness analysis module 93 is displayed on the display 9 and stored in the auxiliary storage device.

  Thus, in order to realize the function of the construction management program 4, as shown in FIG. 12, all functions can be realized by an internal module, but a part of the function is processed by an external application program. The construction management program 4 can receive the result. In particular, when processing enormous amounts of data such as meshing processing, a dedicated application program and a dedicated device that can be processed at high speed are advantageous, and can be selected as appropriate according to the requirements of the site. Such a dedicated application program and a dedicated device are not shown in the figure, but are within the scope of the present invention.

[effect]
Thus, according to the first embodiment of the concrete floor slab finish height management device 1 of the present invention, the concrete floor slab finish height is automatically measured, and the height is set as the target height. Is displayed on the display 9. It is possible to check the progress of concrete placement at a glance by checking the display 9 and the form at the concrete placement site manager, worker, and remote management center. In particular, when the area of the concrete slab is large, an error of 1 cm or several millimeters may not be confirmed with the naked eye of an operator or site manager. You can see the excess and deficiency.

  Conventionally, at the site of placing concrete, a mark indicating the target height of the concrete floor slab finish is set every tens of centimeters, and the work is performed while measuring with the naked eye and ruler while placing concrete. By using the concrete floor slab finish height management device 1, it is not necessary to install this mark, and the efficiency of work on site is greatly improved. Since the concrete floor slab finish height management device 1 automatically measures each point of concrete placement, the concrete floor slab finish height can be managed with an accuracy of 1 mm or less. Even when the concrete slab is uphill, downhill, or on a distorted surface, the finished height of the concrete slab can be managed in units of 1 mm.

  Thereby, the quality of concrete placement is greatly improved. Computerization has become possible, and it has become possible to immediately grasp the progress of concrete placement from a remote location such as a management center. Even in a road curve, when the road surface is not parallel to the ground but has an angle, it is preferable to set the measurement point 10 based on the design data. As described above, the present invention has a remarkable effect that the measurement point 10 can be set even when the shape of the road surface is complicated.

  The present invention is preferably used in fields such as civil engineering work for roads, highways, etc., and concrete placement for floors of large buildings.

DESCRIPTION OF SYMBOLS 1 ... Concrete slab finishing height management apparatus 2 ... Laser range finder 2b ... Antenna 3 ... Computer 4 ... Construction management program 5 ... Road 5a ... Surface 6 ... Pier 7 ... Formwork 8 ... Rebar 9 ... Display 10 ... Measurement point DESCRIPTION OF SYMBOLS 11, 12 ... Prism 11a, 12a ... Support rod 90 ... 3D scan control module 91 ... Coordinate result conversion / correction module 92 ... Result information analysis module 93 ... Flatness analysis module

Claims (5)

In order to construct a concrete floor slab, in concrete placement in which concrete is poured into a formwork,
Laser surveying means for measuring the surface of the concrete floor slab placed during the concrete placement;
(A) A design value representing design coordinates of the measurement point where the measurement is performed is calculated from design coordinates of four or more design points around the measurement point, and (b) the measurement point is A calculation means for comparing and calculating the measured value, which is a coordinate when measured, with the design value;
Using the calculated result, the difference between the height of the target surface of the concrete placement that is the target composed of the design value and the placement surface that is the surface that has already been placed, or the target concrete slab of the finished height management apparatus, wherein the measured value of the management line from a management line comprising a display means for displaying the flatness of displacement on the surface. In claim 1,
When calculating the flatness, the calculation means calculates a design line connecting the two points from the design coordinates of two points in the vicinity of the measurement value, and calculates a design value of the measurement value from the design line. Concrete floor slab finish height management device characterized by. In claim 1,
The calculating means includes
(C) The surface of the concrete slab is meshed and divided into a plurality of cells having a predetermined size, and a design center point, which is a design value of the center point of one cell, is set in or near the cell. From the design coordinates of the four design points , calculated to obtain,
(D) A measurement value at the measurement point closest to the design center point is obtained as a cell measurement value that is a measured value of the cell;
(E) Comparing and calculating the design center point and the cell measurement value and outputting a cell comparison calculation result;
The said display means displays the difference of the height of the said target surface and the height of the said casting surface using the said cell comparison calculation result. The concrete slab finishing height management apparatus characterized by the above-mentioned. In claim 3,
The calculating means includes
(C) The surface of the concrete slab is meshed and divided into a plurality of cells having a predetermined size, and the design center point that is a design value of the center point of one cell is in or near the cell. Calculated from the design coordinates of the four design points of
The coordinates of the designed center point, concrete slab finished height management device and obtaining from the design coordinates of the design point of the 4 points surrounding it. In one selected from claims 1 to 4,
The display means performs the difference between the target surface and the placement surface in a different display using one or more emphasis methods selected from colors, symbols, characters, and hatching. Height management device.

Images