JP4351081B2 - Construction management system and construction management method - Google Patents

Description

  The present invention relates to a construction management system and construction management method for managing the accuracy of a building under construction.

  Conventionally, in order to grasp the accuracy of a building under construction, actual dimensions are measured each time at specific points selected in advance in various processes in construction, and collated with a structural drawing. According to this method, although the accuracy can be improved by increasing the number of measurement points, there is a problem that it takes time to collate them. On the other hand, it is possible to reduce the time and effort of collation by reducing the measurement points, but there arises a problem that accuracy and quality are lowered. Further, in surveying using a surveying instrument such as transit or level, the surveying technique of the surveyor may cause a large error in the actually measured dimensions, and the accuracy of surveying is also limited.

On the other hand, a technique is known in which three-dimensional coordinates of a measurement point measured using a total station at the time of building a steel frame are calculated and collated with three-dimensional CAD data (see, for example, Patent Document 1). The invention described in Patent Document 1 is intended for steel construction, using a total station and a light receiver, and using a total number of survey points from a vertical angle, horizontal angle and distance for a limited number of survey points. Coordinates are calculated and collated with CAD data.
JP-A-8-218633

  However, according to the invention described in Patent Document 1, only three-dimensional coordinates are calculated only for specific survey points, and the three-dimensional coordinates are measured over the entire building space by increasing the number of measurement points. This is not realistic because the labor is increased accordingly. In addition, the invention described in the above-mentioned Patent Document 1 can only perform accuracy control at the time of building a steel frame in which three-dimensional CAD data exists in advance, and renewal work for a building in which three-dimensional CAD data does not exist in advance ( (Remodeling work) cannot be handled.

  The present invention has been made in consideration of such circumstances, and based on the three-dimensional data of the building space measured at high speed and with high accuracy using a three-dimensional laser scanner, the accuracy of the building under construction is determined. It is an object of the present invention to provide a construction management system and a construction management method capable of suitably performing management.

In order to solve the above-mentioned problem, the present invention is a construction management system for performing accuracy management of a building under construction construction,
Storage means for storing three-dimensional CAD data of the building;
Measuring means for measuring three-dimensional data indicating the three-dimensional shape of the building under construction using a three-dimensional laser scanner;
Collation means for collating the three-dimensional CAD data stored in the storage means with the three-dimensional data measured by the measurement means;
From the collation result by the collation means, a calculation means for calculating an error generated in the construction of the building,
Determining means for determining whether the error is within an allowable range ;
A second measuring means for measuring three-dimensional data indicating a three-dimensional shape of the building before the refurbishment using a three-dimensional laser scanner;
Conversion means for converting the three-dimensional data into three-dimensional CAD data of the building;
With
The storage means stores the three-dimensional CAD data of the building converted by the conversion means as an initial value,
The apparatus further comprises simulation means for simulating the three-dimensional CAD data of the building after renovation based on the three-dimensional CAD data stored in the storage means .

  The construction management system further includes warning means for warning the construction manager when the error determined by the determination means exceeds an allowable range.

Furthermore, the present invention is a construction management method for performing accuracy management of a building under construction construction,
Using a three-dimensional laser scanner, a first measurement step of measuring three-dimensional data indicating a three- dimensional shape of the building to which reinforcement is applied;
A first calculation step of calculating a state of the bar arrangement including a pitch of the bar arrangement and a diameter of the bar arrangement from the three-dimensional data;
Using a three-dimensional laser scanner, a second measurement step of measuring three-dimensional data indicating a three- dimensional shape of the building to which the bar arrangement is performed and a formwork is attached;
A second calculation step of calculating the covering thickness of the concrete member covering the reinforcing bar from the three-dimensional data obtained by removing the thickness of the formwork from the three-dimensional data and the calculated state of the reinforcement. It is characterized by that.

Furthermore, the construction management method includes a determination step of determining whether or not there is a portion that has not reached the minimum cover thickness for the cover thickness calculated by the second calculation step;
If there is a portion where the covering thickness does not reach the minimum covering thickness by the determining step, the method further includes a warning step of warning a construction manager.

  ADVANTAGE OF THE INVENTION According to this invention, based on the three-dimensional data of the building space measured with high-speed and high precision using the three-dimensional laser scanner, the precision management of the building under construction construction can be implemented suitably.

  Hereinafter, with reference to drawings, the detail of the construction management system and construction management method which can carry out suitably the accuracy control of the building before and after building construction concerning one embodiment of the present invention is explained.

  FIG. 1 is a schematic diagram illustrating a configuration of a construction management system that performs accuracy management of a building according to an embodiment of the present invention.

  In FIG. 1, at a building construction site 10, three-dimensional data of a building space is measured using a three-dimensional laser scanner 12, and a design drawing of the building is obtained using a computer 21 of an office (or company) 20. A construction management system is shown in which matching with corresponding three-dimensional CAD data is performed, and if there is an abnormality or the like, a construction manager located at the construction site 10 or the like is notified.

  In FIG. 1, as an example, a computer 11 in a building construction site 10 of a building and a computer 21 in an office (or company) 20 are actually connected via a network 30 such as a LAN or a telephone line. It is shown.

  Connected to the computer 11 of the construction site 10 is a three-dimensional laser scanner 12 capable of measuring three-dimensional coordinates over the entire building space and a storage device 13 for storing the measured three-dimensional coordinate data. Has been. The measured three-dimensional coordinate data may be stored in a hard disk built in the computer 11 instead of the storage device 13. Here, details of the three-dimensional laser scanner 13 used in the present embodiment will be described.

  The three-dimensional laser scanner 13 can irradiate the measurement target with laser light and measure the accurate three-dimensional position coordinates (X, Y, Z), luminance, and color of the target. For example, in the present embodiment, the three-dimensional coordinates of the building space are measured using IMAGER5003 manufactured by Z + F. According to this apparatus, the inside of a building can be measured at a scanning rate of up to 625,000 points / second at a horizontal of 360 degrees and a vertical of 310 degrees. In addition, since the three-dimensional coordinates of the measurement point can be measured with high accuracy, such as an error of several millimeters from a distance of about 50 meters, the building can be constructed more quickly and accurately than a conventional total scan. The three-dimensional coordinates of various survey points can be acquired.

  On the other hand, a storage device 22 that stores three-dimensional CAD data of a building to be constructed at the construction site 10 is connected to the computer 21 of the office (or company) 20. The three-dimensional CAD data stored in the storage device 22 may be data created by the computer 21, but data created using other three-dimensional CAD is stored in the storage device 22. There may be. As will be described later, when the 3D CAD data is not found at the time of refurbishment or the like, the 3D laser scanner 12 is used for the building space in the state before construction at the construction site 10. Dimensional data may be measured, and reconstructed three-dimensional CAD data may be stored. The three-dimensional CAD data of the building may be stored in a hard disk built in the computer 21 instead of the storage device 22. The computer 21 may be a three-dimensional CAD device.

  FIG. 2 is a flowchart for explaining a construction management procedure for a building using the construction management system according to the embodiment of the present invention. Here, when a building to be constructed is newly established, drawings such as normal design drawings and construction drawings are created in advance as three-dimensional CAD data. As described above, these data are stored in the storage device 22.

  On the other hand, in the case of renewal (renovation) construction of an existing building, when 3D CAD data of the building exists, construction management can be performed in the same manner as in the case of new construction. In general, there are often no drawings. Moreover, even if it exists, there are many cases where the content is very different from the actual situation. In such a case, in the state before construction, the building space is scanned using the three-dimensional laser scanner 12 (step S11), and the data scanned using the computer 11 or another CAD system is used as initial data. Remember. Then, using the software for constructing 3D CAD data (3D model) from the 3D data installed in the computer 11, the computer 21 or the like, the stored 3D CAD data of the initial value is remodeled. After completion, the three-dimensional CAD data in the “finished” state is simulated (step S12). The simulated three-dimensional CAD data is stored in the storage device 22 as drawing data for (renovation) design and construction. By simulating the state after completion of the renovation in this way, a preliminary survey such as a construction plan can be suitably performed.

  Based on these three-dimensional CAD data, design and construction in the building are performed (step S20). When building construction (or refurbishment or the like) proceeds to some extent, a construction management procedure is performed for managing the accuracy of the building under construction after step S21 at a timing determined by the construction manager. The construction manager usually performs a construction management procedure for performing precision management at an arbitrary timing or at the end of each process.

  As described above, as a premise for performing the construction management procedure, the storage device 22 stores three-dimensional CAD data of a building to be subjected to construction management. Then, the three-dimensional data of the building under construction is measured using the three-dimensional laser scanner 12 (step S21). The three-dimensional data measured by the three-dimensional laser scanner 12 is stored in the storage device 13, and collation with the three-dimensional CAD data stored in the storage device 22 is performed in the computer 21 or the computer 11 (step S22). When using the three-dimensional laser scanner 12, the coordinates of the three-dimensional CAD data of the building and the coordinates at the time of scanning of the three-dimensional laser scanner 12 are set in the same coordinate system, or the computer 11 or 12 after data acquisition. In the same coordinate system.

  And the error which generate | occur | produced in the construction construction of a building is calculated from the collation result (step S23), and it determines by comparing with the threshold value set beforehand whether the error is in an allowable range (step). S24). If the determined error exceeds the allowable range, the construction manager is warned that the error is outside the allowable range (step S25). As an example of the warning procedure in the present embodiment, a warning message is transmitted to the computer 11 of the construction site 10 or a warning message using voice or characters (email) is communicated to a mobile phone possessed by the construction manager. Can do. In addition, various related parties other than the construction manager are warned in the same manner, or the determination results are uploaded to a homepage, etc., and various related parties use the company intranet to determine the determination results and 3D data. You may be made to be able to browse the collation result and the like.

  Further, instead of merely giving a warning, instead of the warning, for example, an improvement request message or the like indicating that the correction is made to the allowable range may be transmitted. Of course, even if the determined error is within the allowable range, a message indicating that it is within the allowable range may be transmitted in the same manner.

  And as a result of the error determination in step S24, if it is within the allowable range, the construction management procedure is terminated as it is. If it is out of the allowable range, the warning is given in step S25 as described above, and then the construction management procedure is performed. finish. The subsequent construction management procedure is the stage at which the construction work (step S20) for improving the problem from the result of the warning or the construction work (step S20) at another construction point has been completed. Is performed in the same manner from step S21 at the timing indicated by.

  Further, when monitoring the state of the construction management from a remote location, for example, it may be set in a “waiting state” for a certain period, and the above procedure may be automatically performed after the set period has elapsed.

  One of the scenes where the construction management is performed is the reinforcing bar placement stage. That is, after assembling the reinforcing bars (step S20), the reinforcing bars arranged using the three-dimensional laser scanner 12 are scanned (step S21). As a result, it is possible to grasp the current state such as the position of the reinforcing bar such as the pitch of the reinforcing bar and the diameter of the reinforcing bar with high accuracy and high speed.

  Thereafter, as described above, the three-dimensional CAD data stored in advance as a drawing is compared with the measured three-dimensional data (step S22), an error is calculated (step S23), and the error is within an allowable range. It is determined whether or not (step S24). In addition, according to the construction management according to the present embodiment, since it is possible to perform error determination using a larger number of survey points instead of measurement of only a few points as in the past, construction with higher accuracy is possible. Management can be performed.

  Further, in the construction management system according to the present embodiment, it is also possible to suitably measure the concrete covering thickness of the reinforcing bars that could not be achieved by the conventional method. Drawing 3 is an outline figure for explaining the state before and behind attaching a formwork on the arranged reinforcing bar. In FIG. 3, (a) is a figure which shows the state by which the reinforcing bar 31 was arranged. Moreover, (b) is a figure which shows the state which attached the formwork 32 for pouring concrete on the rebar 31 by which reinforcement was arranged.

  First, using the three-dimensional laser scanner 12, three-dimensional data of a building to which reinforcing bars 31 are arranged is measured as shown in FIG. Then, the bar arrangement state including the bar arrangement pitch and the reinforcing bar diameter is calculated from the measured three-dimensional data. Next, as shown in FIG. 3 (b), a formwork 32 for pouring concrete from the top where the bar arrangement is applied is attached. Then, three-dimensional data of the building to which the formwork is attached is measured using the three-dimensional laser scanner 12.

  Then, from the difference between the three-dimensional data obtained by removing the thickness d of the mold 32 from the three-dimensional data measured after the mold 32 is attached, and the three-dimensional data in a state where the reinforcing bar 31 is arranged, the reinforcing bar 31 is used. The covering thickness of the concrete member that covers is calculated. As a result, since it is possible to know the thickness of concrete before it is poured, it is possible to more fully investigate the quality state of the concrete frame.

  In addition to simply calculating the concrete cover thickness, it is also determined whether there is a portion where the calculated cover thickness does not reach the minimum cover thickness. If there is a part that has not reached, it may be warned to the construction manager. Further, instead of merely warning, for example, an improvement request message or the like having a content such that the amount of correction is within an allowable range may be transmitted instead of the warning.

  Similarly, the construction management system may be used to investigate the construction management state at the piping stage as well as the reinforcing bars. In addition, the construction management system according to the present embodiment can be applied to slab unevenness management and management of installation accuracy of various devices.

  In the present invention, a program for realizing the functions of the above-described embodiments by a computer is recorded on a computer-readable recording medium (storage medium), and the program recorded on the recording medium is stored in the system. A computer or the like may read and execute. Computer-readable recording media include portable recording media such as flexible disks, CD-ROMs, DVD-ROMs, CD-Rs, and DVD-Rs, hard disks built into the system or computer, and volatile memory ( A storage device (recording device) such as a RAM). The program may be downloaded to the system, computer, or the like via a network such as the Internet or a communication line such as a telephone line.

  Then, the functions of the above-described embodiments are realized by executing the read program in the system or the computer. In this case, the recording medium or the like stores a program corresponding to the flowchart described above.

It is an outline figure showing composition of a construction management system which performs accuracy management of a building concerning one embodiment of the present invention. It is a flowchart for demonstrating the construction management procedure of the building using the construction management system which concerns on one Embodiment of this invention. It is a schematic diagram for demonstrating the state before and behind attaching a formwork on the reinforced bar.

Explanation of symbols

10 Construction site 11, 21 Computer 12 3D laser scanner 13, 22 Storage device 20 Office (or company, etc.)
30 network

Claims (4)

A construction management system for managing the accuracy of buildings under construction,
Storage means for storing three-dimensional CAD data of the building;
Measuring means for measuring three-dimensional data indicating the three-dimensional shape of the building under construction using a three-dimensional laser scanner;
Collation means for collating the three-dimensional CAD data stored in the storage means with the three-dimensional data measured by the measurement means;
From the collation result by the collation means, a calculation means for calculating an error generated in the construction of the building,
Determining means for determining whether the error is within an allowable range ;
A second measuring means for measuring three-dimensional data indicating a three-dimensional shape of the building before the refurbishment using a three-dimensional laser scanner;
Conversion means for converting the three-dimensional data into three-dimensional CAD data of the building;
With
The storage means stores the three-dimensional CAD data of the building converted by the conversion means as an initial value,
A construction management system further comprising simulation means for simulating three-dimensional CAD data of a building after renovation based on the three-dimensional CAD data stored in the storage means .   The construction management system according to claim 1, further comprising a warning unit that warns a construction manager when the error determined by the determination unit exceeds an allowable range. A construction management method for managing the accuracy of a building under construction,
Using a three-dimensional laser scanner, a first measurement step of measuring three-dimensional data indicating a three-dimensional shape of the building to which reinforcement is applied;
A first calculation step of calculating a state of the bar arrangement including a pitch of the bar arrangement and a diameter of the bar arrangement from the three-dimensional data;
Using a three-dimensional laser scanner, a second measurement step of measuring three-dimensional data indicating a three-dimensional shape of the building to which the bar arrangement is performed and a formwork is attached;
A second calculation step of calculating the covering thickness of the concrete member covering the reinforcing bar from the three-dimensional data obtained by removing the thickness of the formwork from the three-dimensional data and the calculated state of the reinforcement. A construction management method characterized by that. A determination step of determining whether or not there is a portion that has not reached the minimum cover thickness with respect to the cover thickness calculated by the second calculation step;
The construction management method according to claim 3 , further comprising a warning step of warning a construction manager when there is a portion where the covering thickness does not reach the minimum covering thickness by the determination step.

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