Construction management device, construction management method, and program

Abstract

The objective is to provide a construction management device that can improve the quality of construction management related to the bending of the aforementioned pipelines and prevent the construction of bent pipes with excessive curvature. [Solution] The construction management device 1 is a construction management device for managing the bending of a pipeline P using resin pipes W. The construction management device 1 has a curvature-related value input unit 11 into which values ​​related to the curvature C in the pipeline P are input, and a curvature determination unit 12 that determines whether or not the curvature C of the pipeline P is within an acceptable range based on the values ​​related to the curvature C.

Description

Technical Field

[0001] The present invention relates to a construction management device, a construction management method, and a program for managing the bending pipe construction of a pipeline using a resin pipe.

Background Art

[0002] In the laying work of a pipeline using a resin pipe (an example of a water pipe) having flexibility, when constructing a curved pipeline, a bending pipe operation is performed in which a straight pipe of the resin pipe is piped in a curved state. The resin pipe is curved without using a device or the like for curving it in a normal temperature state without being heated. The resin pipe is manually curved using a burl or the like so as to fit into a curved pipe trench by an operator at the site.

[0003] For the resin pipe, in order to satisfy the mechanical performance as a pipeline, an allowable curvature is defined for each nominal diameter of the resin pipe. Therefore, the resin pipe needs to be curved with a curvature within an allowable range corresponding to the nominal diameter. In such a bending pipe operation, a technique for measuring the curvature of a curved pipeline has been proposed.

[0004] For example, Patent Document 1 discloses a measuring instrument for measuring the bending radius of a flexible pipe. The measuring instrument includes a first bar, a second bar having one end rotatably connected to one end of the first bar, and a third bar having one end rotatably connected to an intermediate portion of the first bar and a connecting portion at the other end that can be connected to an intermediate portion of the second bar at a plurality of positions. The measuring instrument fixes the angle between the first bar and the third bar by connecting the third bar to the intermediate portions of the first bar and the second bar. The measuring instrument can measure the radius of curvature of the flexible pipe by bringing the flexible pipe into contact with each bar.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] In the measuring instrument described in Patent Document 1, the radius of curvature of the flexible pipe is measured by bringing each of the rods into contact with the flexible pipe. In other words, in order to measure the radius of curvature of the flexible pipe, the measuring instrument needs to bring each of the rods into contact with the flexible pipe within the pipe groove where the flexible pipe is located. However, if there is not enough space in the pipe groove to place the measuring instrument, the measuring instrument cannot be positioned in an appropriate position to measure the radius of curvature of the flexible pipe within the pipe groove. Therefore, in a pipe groove that is only large enough to accommodate the flexible pipe, the radius of curvature of the flexible pipe cannot be measured properly. Furthermore, the technology described in Patent Document 1 is a technology for measuring the radius of curvature of the flexible pipe, and does not determine whether the radius of curvature of the flexible pipe is within the allowable range of the flexible pipe.

[0007] Therefore, there is a need for a construction management device and method that can improve the quality of construction management related to the bending of the aforementioned pipelines and prevent the construction of bent pipes with excessive curvature.

[0008] The object of the present invention is to realize a construction management device, construction management method, and program that improve the quality of construction management related to the bending of the pipeline and prevent the construction of bent pipes with excessive curvature. [Means for solving the problem]

[0009] A construction management device according to one embodiment of the present invention is a construction management device for managing the bending of pipeline construction using resin pipes. The construction management device has a curvature-related value input unit into which values ​​related to the curvature of the pipeline are input, and a curvature determination unit that determines whether or not the curvature of the pipeline is within an acceptable range based on the curvature-related values ​​(first configuration).

[0010] In the above configuration, if there is a bent pipe section in the pipeline where a straight pipe is curved, the curvature determination unit determines whether the curvature is within an acceptable range by inputting values ​​related to the curvature of the pipeline, such as the curvature of the curved pipeline, the chord length connecting any two points in the pipeline, the circumference, and the rafter height (distance from the midpoint of the chord length to the inner circumference of the pipeline), from the curvature-related value input unit. If the curvature of the curved pipeline is within an acceptable range, the straight pipe constituting the curved pipeline satisfies the mechanical performance requirements of the pipeline. Since the curvature of the curved pipeline is objectively determined based on predetermined criteria, the mechanical performance of the curved pipeline is maintained at a certain level or higher. This improves the quality of construction management related to the bending of the pipeline and prevents the construction of bent pipes with excessive curvature.

[0011] The first configuration further includes an imaging unit for photographing the pipeline and a curvature-related value calculation unit for calculating a value related to the curvature of the pipeline based on the inspection image of the pipeline taken by the imaging unit. The curvature determination unit determines whether the curvature of the pipeline is within an acceptable range based on the calculated curvature-related value when the curvature-related value calculation unit has calculated a value related to the curvature (second configuration).

[0012] In the above configuration, since the values ​​related to the curvature of the pipeline are calculated based on the inspection images captured by the imaging unit, the curvature of the pipeline can be calculated even when it is difficult to measure the values ​​related to the curvature of the pipeline using a scale or the like. Furthermore, since the values ​​related to the curvature of the pipeline are calculated based on the inspection images of the pipeline, the curvature can be calculated more efficiently and accurately than when the values ​​related to the curvature are actually measured in the pipe groove. This improves the quality of construction management related to the bending of the pipeline and prevents the construction of pipes with excessive curvature.

[0013] In the second configuration, the imaging unit captures the inspection image of the pipeline on which the jig is placed. The curvature-related value calculation unit calculates a value related to the curvature of the pipeline based on the dimensions of predetermined intervals determined by the jig, which are input from the curvature-related value input unit, and the dimensions of the predetermined intervals on the image (third configuration).

[0014] In the above configuration, the curvature-related values ​​of the pipeline included in the inspection image are calculated based on the predetermined interval dimensions determined by the jig input from the curvature-related value input unit and the predetermined interval dimensions in the inspection image. Therefore, it is not necessary to measure the nominal diameter, chord length, or rake height relative to the chord length of the pipeline. Thus, the curvature-related values ​​can be calculated more efficiently and accurately than when measuring the pipeline. This improves the quality of construction management related to the bending of the pipeline and prevents the construction of pipes with excessive curvature.

[0015] The second configuration further includes an external dimension input unit into which the external dimensions of any part of the resin pipe are input. The curvature-related value calculation unit calculates a value related to the curvature of the pipeline based on the external dimensions of any part of the resin pipe input to the external dimension input unit and the dimensions of the arbitrary part on the image in the inspection image (fourth configuration).

[0016] In the above configuration, the values ​​related to the curvature of the pipeline included in the inspection image are calculated based on the external dimensions of any part of the pipeline input from the external dimension input unit. Therefore, when taking the inspection image, it is not necessary to place reference markers or the like at predetermined intervals along the pipeline. As a result, the values ​​related to the curvature can be calculated more efficiently and accurately than when markers or the like are placed along the pipeline. This improves the quality of construction management related to the bending of the pipeline and prevents the construction of pipes with excessive curvature.

[0017] A construction management method according to one embodiment of the present invention is a construction management method for managing the bending of a pipeline using resin pipes. The construction management method comprises either a curvature-related value acquisition step of acquiring a value related to the curvature of the pipeline, or an imaging step of photographing the pipeline and a curvature-related value calculation step of calculating a value related to the curvature of the pipeline based on the captured inspection image of the pipeline, and a curvature determination step of determining whether the curvature of the pipeline is within an acceptable range based on the value related to the curvature (first method).

[0018] In the above configuration, if there is a bent pipe section in the pipeline where a straight pipe is curved, it is determined whether the curvature of the pipeline is within an acceptable range based on values ​​related to the curvature of the pipeline, such as the curvature, chord length, and rafter height, obtained in the curvature-related value acquisition step, or values ​​related to the curvature of the pipeline calculated from the inspection image in the curvature-related value calculation step. If the curvature of the pipeline is within an acceptable range, the straight pipe constituting the curved pipeline is curved within a range that satisfies the mechanical performance requirements of the pipeline. In this way, the curvature of the curved pipeline is objectively determined based on predetermined criteria, so that the mechanical performance of the curved pipeline is maintained at a certain level or higher. This improves the quality of construction management related to the bending of the pipeline and prevents the construction of bent pipes with excessive curvature.

[0019] This is a program for managing the bending and installation of pipelines using resin pipes. The installation management program causes the computer to acquire values ​​related to the curvature of the pipeline. Alternatively, it causes the computer to photograph the pipeline and calculate values ​​related to the curvature of the pipeline based on the inspection images of the pipeline, and then determines whether the curvature of the pipeline is within an acceptable range based on these values ​​(first program).

[0020] In the above configuration, when there is a bent pipe portion in which a straight pipe is bent in the pipeline, the computer is caused to acquire values related to the curvature of the pipeline, such as the curvature, chord length, and sagitta in the bent pipeline, in the curvature-related value input unit. Alternatively, the program causes the computer to calculate a value related to the curvature of the pipeline from the inspection image, and causes the curvature determination unit to determine whether the curvature is within an allowable range. When the curvature of the pipeline is within the allowable range, the straight pipe constituting the bent pipe portion is bent within a range that satisfies the mechanical performance as a pipeline. Thus, since the curvature of the bent pipeline is objectively determined based on a predetermined determination criterion, the mechanical performance of the bent pipeline is maintained at a certain level or higher. Thereby, the quality of construction management related to the bent pipe of the pipeline can be improved, and construction of a bent pipe with an excessive curvature can be prevented.

Effect of the Invention

[0021] The construction management device according to an embodiment of the present invention is a construction management device for managing the bending pipe construction of a pipeline using a resin pipe. The construction management device includes a curvature-related value input unit into which a value related to the curvature in the pipeline is input, and a curvature determination unit that determines whether the curvature of the pipeline is within an allowable range based on the value related to the curvature.

[0022] The construction management device having the above configuration determines whether the curvature of the bent pipeline is within the allowable range by the curvature determination unit by inputting the curvature, perimeter, sagitta, etc. in the bent pipeline from the curvature-related value input unit. Thereby, the quality of construction management related to the bent pipe of the pipeline can be improved, and construction of a bent pipe with an excessive curvature can be prevented.

Brief Description of the Drawings

[0023] [Figure 1] FIG. 1 is a block diagram showing a schematic configuration of a construction management device according to Embodiment 1 of the present invention. [Figure 2] FIG. 2 is a schematic diagram showing parameters for determining the curvature in a bent pipeline. [Figure 3] Figure 3 is a flowchart showing a construction management method by the construction management device according to Embodiment 1 of the present invention. [Figure 4] Figure 4 is a block diagram showing a schematic configuration of the construction management device according to Embodiment 2 of the present invention. [Figure 5] Figure 8 is a flowchart showing a construction management method by the construction management device according to Embodiment 2 of the present invention. [Figure 6] Figure 6 is a block diagram showing a schematic configuration of the construction management device according to Embodiment 3 of the present invention. [Figure 7] Figure 7 is a schematic diagram showing a state where a jig for determining curvature is installed in a curved pipeline. [Figure 8] Figure 7 is a flowchart showing a construction management method by the construction management device according to Embodiment 3 of the present invention. [Figure 9] Figure 9 is a block diagram showing a schematic configuration of the construction management device according to Embodiment 4 of the present invention. [Figure 10] Figure 10 is a schematic diagram showing a state where an interval between any two points for determining curvature is selected in a curved pipeline. [Figure 11] Figure 11 is a flowchart showing a construction management method by the construction management device according to Embodiment 4 of the present invention.

Modes for Carrying Out the Invention

[0024] Hereinafter, each embodiment of the construction management device according to the present invention will be described with reference to the drawings. In each figure, the same parts are denoted by the same reference numerals, and the description of the same parts will not be repeated. Note that the dimensions of the constituent members in each figure do not faithfully represent the actual dimensions of the constituent members and the dimensional ratios of the constituent members.

[0025] In the following explanation, the terms "fix," "connect," and "attach" (hereinafter referred to as "fixing, etc.") include not only cases where components are directly fixed to each other, but also cases where they are fixed to each other via other components. In other words, in the following explanation, the terms "fixing, etc." include both direct and indirect fixing of components to each other.

[0026] [Embodiment 1] (Schematic configuration) This section describes a construction management device 1, which is an embodiment of the construction management device according to the present invention. Figure 1 is a block diagram showing the schematic configuration of the construction management device 1 according to embodiment 1 of the present invention. Figure 2 is a schematic diagram showing parameters for determining the curvature C in a curved pipeline P. Figure 3 is a flowchart showing the construction management method using the construction management device 1.

[0027] As shown in Figure 2, pipeline P is, for example, a water pipe pipeline. Pipeline P is composed of multiple connected resin pipes W. The resin pipes W are water pipes. The resin pipes W are laid underground. The resin pipes W are flexible polyethylene pipes. The resin pipes W may also be pipes other than water pipes, such as sewer pipes, agricultural water pipes, or gas pipes. The resin pipes W may be flexible resin pipes other than polyethylene pipes. Pipeline P has a curved pipe section. The resin pipes W that make up the curved pipeline P are placed in the pipe groove in a curved state by workers.

[0028] As shown in Figure 1, the construction management device 1 manages the bending of pipelines P using resin pipes W (see Figure 2). The construction management device 1 manages the curvature C of pipelines P, which are curved from straight resin pipes W, and determines whether the curvature C is within the allowable range of the resin pipes W (see Figure 2). The curvature C is the reciprocal of the radius of curvature R, which is the distance to the center of the arc of the curved pipeline P (see Figure 2). The construction management device 1 includes a portable terminal 10 that is brought to the construction site where the bending of pipelines P is being carried out, and a server 20 that stores various information.

[0029] The mobile terminal 10 inputs and outputs values ​​related to the curvature C of the bent section of the pipeline P. The mobile terminal 10 is composed of a portable smartphone, tablet, etc. The mobile terminal 10 has a curvature-related value input unit 11, a curvature determination unit 12, and a terminal input / output unit 13.

[0030] The curvature-related value input unit 11 acquires values ​​related to the curvature C in the curved pipeline P. The curvature-related value input unit 11 is controlled by a program that controls the construction management device 1 to acquire values ​​related to the curvature C in the pipeline P. The curvature-related value input unit 11 has a configuration in which values ​​related to the curvature C in the curved pipeline P are input. The curvature-related value input unit 11 is configured to input, for example, whether or not each resin pipe W constituting the pipeline P is bent, and values ​​related to the curvature C in the curved pipeline P. The values ​​related to the curvature C in the curved pipeline P include, for example, the nominal diameter D of the resin pipe W constituting the pipeline P, the chord length L connecting any two points on the inner side surface of the curved pipeline P, and the arrow height H from the midpoint of chord length L to the inner surface of the pipeline P (see Figure 2).

[0031] The curvature-related value input unit 11 is configured, for example, by a touch panel (not shown) on a mobile terminal 10. The curvature-related value input unit 11 displays fields on the touch panel for inputting the nominal diameter D, chord length L, and arrow height H. The curvature-related value input unit 11 obtains the nominal diameter D, chord length L, and arrow height H via the touch panel. The curvature-related value input unit 11 is electrically connected to the curvature determination unit 12. The curvature-related value input unit 11 outputs the input nominal diameter D, chord length L, and arrow height H to the curvature determination unit 12.

[0032] The curvature determination unit 12 determines whether the curvature C of the pipeline P is within an acceptable range based on values ​​related to the curvature C of the pipeline P. The curvature determination unit 12 is controlled by a program that controls the construction management device 1 to determine whether the curvature of the pipeline P is within an acceptable range based on values ​​related to curvature C. For each nominal diameter D of the resin pipe W that constitutes the pipeline P, an acceptable range of values ​​related to curvature C is set. For example, the curvature determination unit 12 determines whether the curvature C of the pipeline P, which is composed of resin pipes W of nominal diameter D, is less than or equal to the acceptable value based on the chord length L and the saddle height H. The curvature determination unit 12 is electrically connected to the curvature-related value input unit 11 and the terminal input / output unit 13.

[0033] The curvature determination unit 12 has judgment criterion information E, which is information about the permissible range of values ​​related to curvature C specified for each nominal diameter D of the resin pipe W. The judgment criterion information E includes, for example, the maximum permissible saddle height calculated from an arbitrary chord length L, or the minimum permissible chord length calculated from an arbitrary saddle height H, for resin pipes W of any nominal diameter D that constitute a curved pipeline P. The curvature determination unit 12 obtains the nominal diameter D, chord length L, and saddle height H from the curvature-related value input unit 11. Based on the judgment criterion information E, the curvature determination unit 12 determines whether the curvature C of the pipeline P is within the permissible range from the nominal diameter D, chord length L, and saddle height H of the resin pipe W obtained from the curvature-related value input unit 11. The curvature determination unit 12 outputs the judgment result Er to the server 20 via the terminal input / output unit 13. The curvature determination unit 12 also outputs the judgment result Er to a touch panel (not shown) of the mobile terminal 10. The judgment result Er is displayed on the touch panel (not shown) of the mobile terminal 10.

[0034] The terminal input / output unit 13 outputs various information to the server 20 and retrieves various information from the server 20. The terminal input / output unit 13 is configured as a wireless communication device. The terminal input / output unit 13 also includes a display device such as a touch panel. The terminal input / output unit 13 is configured to communicate with the server input / output unit 22 of the server 20. The terminal input / output unit 13 is electrically connected to the curvature determination unit 12. The terminal input / output unit 13 transmits the information acquired by the curvature-related value input unit 11 and the determination result Er of the curvature determination unit 12 to the server 20. The terminal input / output unit 13 also displays the information acquired by the curvature-related value input unit 11 and the determination result Er of the curvature determination unit 12 on a touch panel or the like.

[0035] Server 20 acquires values ​​related to the curvature C of the bent section of the pipeline P and performs construction management related to the bent piping. Server 20 has a storage unit 21 and a server input / output unit 22. Server 20 includes a cloud server.

[0036] The memory unit 21 stores various types of information. The memory unit 21 stores the construction management plan information Mp for the pipeline P. The construction management plan information Mp consists of the piping diagram of the pipeline P, the construction schedule for the pipeline P, information about the resin pipes W that make up the pipeline P including their nominal diameter D, the location of the bent pipe sections, the bending angles, and other information necessary for constructing the pipeline P. The memory unit 21 is electrically connected to the server input / output unit 22.

[0037] The memory unit 21 acquires information about the pipeline P from the mobile terminal 10 via the server input / output unit 22. The memory unit 21 also outputs information about the pipeline P to the mobile terminal 10 via the server input / output unit 22. The memory unit 21 reflects the acquired information about the pipeline P in the construction management plan information Mp. For example, the memory unit 21 acquires the presence or absence of bent piping for each resin pipe W constituting the curved pipeline P, the chord length L of the curved pipeline P, the saddle height H, and the determination result Er by the curvature determination unit 12, which are input to the curvature-related value input unit 11, and reflects them in the construction management plan information Mp.

[0038] The server input / output unit 22 outputs various information to the mobile terminal 10 and acquires various information from the mobile terminal 10. The server input / output unit 22 is configured as a wireless communication device. The server input / output unit 22 is configured to communicate with the terminal input / output unit 13 of the mobile terminal 10. The server input / output unit 22 is electrically connected to the storage unit 21. The server input / output unit 22 transmits information, including the construction management plan information Mp stored in the storage unit 21, to the mobile terminal 10.

[0039] With the above configuration, the construction management device 1 determines whether the curvature C of the curved pipeline P is within an acceptable range at the site of bending pipeline construction using resin pipes W, based on values ​​related to the curvature C of the pipeline P obtained by the curvature-related value input unit 11 configured in the mobile terminal 10. The construction management device 1 transmits the determination result Er to the worker via the mobile terminal 10 and reflects it in the construction management plan information Mp stored in the server 20.

[0040] (Construction management method for bending pipes) Next, the construction management method for the bending process of pipeline P using the construction management device 1 will be explained with reference to Figures 1 to 3. The construction management method includes a curvature-related value acquisition process S10, a curvature determination process S20, and an output process S30. It is assumed that the worker checking the curvature of pipeline P already knows the nominal diameter D, chord length L, and arrow height H relative to chord length L of the resin pipe W that constitutes the curved pipeline P.

[0041] As shown in Figure 3, the construction management method for the bending piping process in the flowchart is started (START). In the curvature-related value acquisition process S10, the nominal diameter D, chord length L, and saddle height H, which are values ​​related to the curvature C of the pipe P, are acquired (see Figure 2).

[0042] As shown in Figure 1, the operator inputs the nominal diameter D, chord length L, and arrow height H into the curvature-related value input unit 11, which is configured on the touch panel of the mobile terminal 10. The curvature-related value input unit 11 acquires the nominal diameter D, chord length L, and arrow height H known by the operator. The curvature-related value input unit 11 outputs the acquired nominal diameter D, chord length L, and arrow height H to the curvature determination unit 12.

[0043] In the curvature determination process S20, it is determined whether the curvature C of the pipe P is within the acceptable range based on the nominal diameter D, chord length L, and rafter height H (see Figure 3).

[0044] The curvature determination unit 12 obtains the nominal diameter D, chord length L, and saddle height H from the curvature-related value input unit 11. Based on the determination criterion information E, the curvature determination unit 12 compares, for example, whether the obtained saddle height H is less than or equal to the maximum allowable saddle height for the chord length L of the resin pipe W with nominal diameter D. Alternatively, based on the determination criterion information E, the curvature determination unit 12 compares, for example, whether the obtained chord length L is greater than or equal to the minimum allowable chord length for the saddle height H of the resin pipe W with nominal diameter D. If the saddle height H is less than or equal to the maximum allowable saddle height, or if the chord length L is greater than or equal to the minimum allowable chord length, the curvature C of the pipe P is determined to be within the allowable range. On the other hand, if the saddle height H is greater than the maximum allowable saddle height, or if the chord length L is less than the minimum allowable chord length, the curvature C of the pipe P is determined to be outside the allowable range.

[0045] In the output process S30, the judgment result Er is output to the touch panel of the mobile terminal 10 or to the server 20 (see Figure 3).

[0046] The curvature determination unit 12 outputs the determination result Er to the terminal input / output unit 13. The terminal input / output unit 13 outputs the determination result Er to the touch panel of the mobile terminal 10, or to the server input / output unit 22 of the server 20. The curvature determination unit 12 displays a message to the terminal input / output unit 13 indicating that the curvature C of the pipe P is within the acceptable range, or that the curvature C of the pipe P is outside the acceptable range and therefore the bending pipe construction should be redone. If the curvature C of the pipe P is within the acceptable range, the curvature determination unit 12 sends a value related to the curvature C of the pipe P, including the determination result Er, to the server input / output unit 22. The server input / output unit 22 outputs the value related to the curvature C of the pipe P, including the acquired determination result Er, to the storage unit 21.

[0047] The memory unit 21 obtains values ​​related to the curvature C of the pipeline P, including the judgment result Er. The memory unit 21 reflects the judgment result Er and the values ​​related to the curvature C of the pipeline P into the construction management plan information Mp. The memory unit 21 stores the construction management plan information Mp with the added information.

[0048] After that, the flow shown in Figure 3 is terminated (END).

[0049] In the construction management device 1 configured in this way, values ​​related to the curvature C of the curved pipeline P, such as curvature C, chord length L, and saddle height H, are input from the curvature-related value input unit 11, and the curvature determination unit 12 determines whether or not the curvature C of the pipeline P is within an acceptable range. If the curvature C of the curved pipeline P is within an acceptable range, the straight pipes constituting the curved pipeline P are curved within a range that satisfies the mechanical performance of the pipeline P. The construction management device 1 records the determination result Er of the curved pipeline P and values ​​related to the curvature C of the pipeline P, such as curvature C, chord length L, and saddle height H, in the construction management plan Mp stored in the memory unit 21. Since the curvature C of the curved pipeline P is objectively determined based on predetermined determination criterion information E, the mechanical performance of the curved pipeline P is maintained at a certain level or higher. This improves the quality of construction management related to the bending of pipelines P and prevents the construction of curved pipelines with excessive curvature C.

[0050] (Construction management program) The program (construction management program) in this embodiment can be any program that causes a computer to execute steps S10 to S30 shown in Figure 3 or Figure 5. By executing this program on a computer, the construction management device 1 in this embodiment can be realized. In this case, the computer that executes the program may be a general-purpose computer or a dedicated computer. The computer that executes the program may, for example, be equipped with a CPU, and the CPU (Central Processing Unit) performs the calculation processing.

[0051] The construction management program according to this embodiment causes the computer's curvature-related value input unit 11 to acquire values ​​related to the curvature C of the pipeline P. Alternatively, the construction management program causes the computer's imaging unit 14 to photograph the pipeline P, and the computer's curvature-related value calculation unit 15 to calculate values ​​related to the curvature C of the pipeline P based on the photographed inspection image Di of the pipeline P. Furthermore, the construction management program causes the computer's curvature determination unit 12 to determine whether the curvature C of the pipeline P is within an acceptable range based on the values ​​related to the curvature C.

[0052] In this way, the curvature C of the curved pipe P is objectively determined based on predetermined criteria, ensuring that the mechanical performance of the curved pipe P is maintained at a certain level or higher. This improves the quality of construction management related to the bending of pipes P and prevents the construction of curved pipes with excessive curvature C.

[0053] [Embodiment 2] (Schematic configuration) Next, a construction management device 2, which is an embodiment of the construction management device according to the present invention, will be described. Figure 4 is a block diagram showing the schematic configuration of the construction management device 2. Figure 5 is a flowchart showing the construction management method using the construction management device 2. The construction management device 2 differs from the construction management device 1 in that it has an imaging unit 14 and a curvature-related value calculation unit 15. Furthermore, the construction management device 2 does not require a curvature-related value input unit 11. In the following description, components similar to those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted, and only the parts that differ from Embodiment 1 will be described.

[0054] As shown in Figure 4, the construction management device 2 manages the bending of pipelines P using resin pipes W. The construction management device 2 includes a portable terminal 30 that is brought to the construction site where the bending of pipelines P is being carried out, and a server 20 that stores various information.

[0055] The mobile terminal 30 inputs and outputs values ​​related to the curvature of the bent section of the pipeline P. The mobile terminal 30 is composed of a portable smartphone, tablet, etc. The mobile terminal 30 has a curvature determination unit 12, a terminal input / output unit 13, an imaging unit 14, and a curvature-related value calculation unit 15.

[0056] The imaging unit 14 photographs the bent portion of the curved pipeline P. The imaging unit 14 is controlled to photograph the pipeline P by a program that controls the construction management device 2. The imaging unit 14 is composed of, for example, a digital camera on a mobile terminal 30. The imaging unit 14 is electrically connected to the curvature-related value calculation unit 15. The imaging unit 14 photographs the pipeline P according to the operator's operation. The imaging unit 14 outputs the inspection image Di of the captured pipeline P to the curvature-related value calculation unit 15.

[0057] The curvature-related value calculation unit 15 calculates a value related to the curvature C of the pipeline P based on the inspection image Di. The curvature-related value calculation unit 15 is controlled by a program that controls the construction management device 2 to calculate a value related to the curvature C of the pipeline P based on the inspection image Di. The curvature-related value calculation unit 15 is electrically connected to the imaging unit 14. The curvature-related value calculation unit 15 is also electrically connected to the curvature determination unit 12. The curvature-related value calculation unit 15 acquires the inspection image Di captured by the imaging unit 14. The curvature-related value calculation unit 15 outputs the calculated value related to the curvature C of the curved pipeline P to the curvature determination unit 12.

[0058] The curvature-related value calculation unit 15 calculates values ​​related to the curvature C in the curved pipe P based on the inspection image Di. The curvature-related value calculation unit 15 has, for example, an image extraction function that extracts an image of the pipe P from the inspection image Di. The curvature-related value calculation unit 15 also has a physical coordinate transformation function that converts the pixel coordinates in the inspection image Di into physical coordinates using, for example, internal parameters such as the focal length and image sensor size of the digital camera constituting the imaging unit 14, and calculates the nominal diameter D of the resin pipe W, the chord length L at an arbitrary position of the chord X in the curved pipe P, and the actual dimensions of the arrow height H relative to the chord length L.

[0059] (Construction management method for bending pipes) Using Figures 4 and 5, the construction management method for the bending process of pipeline P using the construction management device 2 will be explained. As shown in Figure 5, the construction management method includes a photography process S11, a curvature-related value calculation process S12, a curvature determination process S20, and an output process S30.

[0060] As shown in Figure 5, the construction management method for the bending pipe process in the flowchart is started (START). In the imaging process S11, the imaging unit 14 takes an inspection image Di of the curved pipe P (see Figure 4).

[0061] As shown in Figure 4, the operator photographs the curved pipeline P using the imaging unit 14. The imaging unit 14 acquires an inspection image Di including the curved pipeline P. The imaging unit 14 outputs the inspection image Di to the curvature-related value calculation unit 15.

[0062] In the curvature-related value calculation process S12, the curvature-related value calculation unit 15 calculates the actual dimensions of the nominal diameter D, chord length L, and saddle height H from the inspection image Di (see Figure 5).

[0063] The curvature-related value calculation unit 15 acquires the inspection image Di captured by the imaging unit 14. The curvature-related value calculation unit 15 extracts an image of the pipeline P from the inspection image Di using the image extraction function. The curvature-related value calculation unit 15 uses the physical coordinate transformation function to calculate the actual dimensions of the nominal diameter D of the resin pipe W constituting the pipeline P, the chord length L at any position in the curved pipeline P, and the saddle height H based on the pixel coordinates on the extracted image of the pipeline P. The curvature-related value calculation unit 15 outputs the calculated nominal diameter D, chord length L, and saddle height H to the curvature determination unit 12.

[0064] In the curvature determination process S20, the curvature determination unit 12 determines whether the curvature C of the pipe P is within the acceptable range based on the nominal diameter D, chord length L, and rafter height H (see Figure 4).

[0065] In the output process S30, the curvature determination unit 12 outputs the determination result Er to the terminal input / output unit 13 (see Figure 4). The terminal input / output unit 13 outputs the determination result Er, nominal diameter D, chord length L, yaw height H, etc., to at least one of the touch panel of the mobile terminal 30 or the server input / output unit 22.

[0066] After that, the flow shown in Figure 5 is terminated (END).

[0067] In the construction management device 2 configured in this way, the actual dimensions of the nominal diameter D, chord length L, and saddle height H of the pipe P are calculated based on the inspection image Di captured by the imaging unit 14. Therefore, even when it is difficult to measure the chord length L and saddle height H of the pipe P placed in the pipe groove using a scale or the like, the curvature C of the pipe P in the pipe groove can be indirectly calculated. Furthermore, since the nominal diameter D, chord length L, and saddle height H of the pipe P are calculated based on the inspection image Di, the curvature C can be calculated more efficiently and accurately than when measuring the chord length L and saddle height H in the pipe groove. This improves the quality of construction management related to the bending of pipes P and prevents the construction of bent pipes with excessive curvature C.

[0068] [Embodiment 3] (Schematic configuration) Next, a third embodiment of the construction management device according to the present invention, the construction management device 3, will be described. Figure 6 is a block diagram showing the schematic configuration of the construction management device 3. Figure 7 is a schematic diagram showing a state in which a jig J for determining the curvature C in a curved pipeline P is installed. Figure 8 is a flowchart showing the construction management method using the construction management device 3. The construction management device 3 differs from the construction management device 2 in that it has a curvature-related value input unit 16 into which the distance L1 between a pair of jigs J is input, and a curvature-related value calculation unit 17 that calculates a value related to the curvature C from the distance L1 between the pair of jigs J. In the following description, components similar to those in the second embodiment will be denoted by the same reference numerals and their descriptions will be omitted, and only the parts that differ from the second embodiment will be described. The pair of jigs J are reference members for calculating a value related to the curvature C of the curved pipeline P.

[0069] As shown in Figure 6, the construction management device 3 manages the bending and installation of pipelines P using resin pipes W. The construction management device 3 includes a portable terminal 40 that is brought to the site where the bending and installation of pipelines P is performed, and a server 20 that stores various information.

[0070] The mobile terminal 40 inputs and outputs values ​​related to the curvature of the bent section of the pipeline P. The mobile terminal 40 is composed of a portable smartphone, tablet, etc. The mobile terminal 40 has a curvature determination unit 12, a terminal input / output unit 13, an imaging unit 14, a curvature-related value input unit 16, and a curvature-related value calculation unit 17.

[0071] The imaging unit 14 photographs the bent portion of the curved pipeline P and a pair of fixtures J. The imaging unit 14 is controlled by a program that controls the construction management device 3 to photograph the pipeline P and the pair of fixtures J. The imaging unit 14 photographs the pipeline P and the pair of fixtures J according to the operator's operation. The imaging unit 14 outputs the inspection image Di of the photographed pipeline P and the pair of fixtures J to the curvature-related value calculation unit 17.

[0072] The curvature-related value input unit 16 acquires an arbitrary interval L1 determined by a pair of fixtures J placed in the pipeline P. The curvature-related value input unit 16 is controlled to acquire the interval L1 by a program that controls the construction management device 3. The curvature-related value input unit 16 is, for example, the touch panel of a mobile terminal 40. The curvature-related value input unit 16 has a configuration in which the interval L1 of the pair of fixtures J is input. The interval L1 is the chord length connecting any two points indicated by the pair of fixtures J placed on the inner circumference side of the curved pipeline P.

[0073] The curvature-related value input unit 16 displays, for example, a field on the touch panel for inputting the distance L1 between a pair of fixtures J. The curvature-related value input unit 16 obtains the distance L1 between the pair of fixtures J via the touch panel. The curvature-related value input unit 16 is electrically connected to the curvature-related value calculation unit 17. The curvature-related value input unit 16 outputs the input distance L1 between the pair of fixtures J to the curvature-related value calculation unit 17.

[0074] The curvature-related value calculation unit 17 calculates values ​​related to the curvature C of the pipeline P based on the inspection image Di. The curvature-related value calculation unit 17 is controlled by a program that controls the construction management device 3 to calculate values ​​related to the curvature C of the pipeline P based on the inspection image Di. The curvature-related value calculation unit 17 is electrically connected to the imaging unit 14 and the curvature-related value input unit 16. The curvature-related value calculation unit 17 is also electrically connected to the curvature determination unit 12. The curvature-related value calculation unit 17 acquires the inspection image Di captured by the imaging unit 14. The curvature-related value calculation unit 17 outputs the distance L1 of the acquired pair of jigs J corresponding to the chord length, the calculated nominal diameter D, and the rafter height H to the curvature determination unit 12.

[0075] The curvature-related value calculation unit 17 calculates values ​​related to the curvature C in the curved pipe P based on the inspection image Di. The curvature-related value calculation unit 17 has an image extraction function that extracts images of the pipe P and a pair of fixtures J from the inspection image Di. The curvature-related value calculation unit 17 also has a physical coordinate transformation function that converts the pixel coordinates in the inspection image Di acquired from the imaging unit 14 into physical coordinates based on the spacing L1 of the pair of fixtures J acquired from the curvature-related value input unit 16, and calculates the actual dimensions of the nominal diameter D and rafter height H (see Figure 7).

[0076] (Construction management method for bending pipes) Using Figures 6 to 8, a construction management method for the bending process of a pipeline P using a pair of jigs J by the construction management device 3 will be explained. The construction management method includes a curvature-related value acquisition step S10, a photography step S11, a curvature-related value calculation step S12, a curvature determination step S20, and an output step S30.

[0077] As shown in Figure 7, the pair of fixtures J are reference members for calculating values ​​related to the curvature C of the curved pipe P. The pair of fixtures J are, for example, a pair of markers. The pair of fixtures J are positioned so as to be in contact with the inner diameter side of the outer surface of the curved pipe P. In other words, the pair of fixtures J are placed in the pipe P to calculate the curvature C using a virtual chord X connecting the pair of fixtures J.

[0078] As shown in Figure 8, the construction management method for the bending piping process in the flowchart is started (START). In the curvature-related value acquisition process S10, the curvature-related value input unit 16 acquires the distance L1 between the pair of jigs J (see Figure 7).

[0079] As shown in Figure 6, the operator inputs the distance L1 between the pair of fixtures J to the curvature-related value input unit 16 configured on the touch panel of the mobile terminal 40. The curvature-related value input unit 16 acquires the distance L1 between the pair of fixtures J. The curvature-related value input unit 16 outputs the acquired distance L1 between the pair of fixtures J to the curvature determination unit 12.

[0080] In the imaging process S11, the imaging unit 14 captures inspection images Di of the pair of fixtures J and the curved pipe P (see Figure 8).

[0081] The operator takes a photograph of the curved pipeline P on which the pair of jigs J are installed using the digital camera of the mobile terminal 40. The imaging unit 14 acquires an inspection image Di including the pair of jigs J and the curved pipeline P. The imaging unit 14 outputs the inspection image Di to the curvature-related value calculation unit 17.

[0082] In the curvature-related value calculation process S12, the curvature-related value calculation unit 17 calculates the actual dimensions of the nominal diameter D and the rout height H from the pair of jigs J and the inspection image Di (see Figure 8).

[0083] The curvature-related value calculation unit 17 acquires the inspection image Di captured by the imaging unit 14. The curvature-related value calculation unit 17 extracts images of a pair of jigs J and a pipe P from the inspection image Di using the image extraction function. The curvature-related value calculation unit 17 uses the physical coordinate transformation function to calculate the nominal diameter D of the resin pipe W constituting the pipe P and the actual dimensions of the arrow height H relative to the virtual chord X connecting the pair of jigs J, based on the distance L1 of the acquired pair of jigs J and the pixel coordinates on the extracted images of the pair of jigs J, from the image of the curved pipe P. The curvature-related value calculation unit 17 uses the distance L1 of the acquired pair of jigs J as the chord length and outputs the chord length L, the calculated nominal diameter D, and the arrow height H to the curvature determination unit 12.

[0084] In the curvature determination process S20, it is determined whether the curvature C of the pipe P is within the acceptable range based on the nominal diameter D, chord length L, and rafter height H (see Figure 8).

[0085] In the output process S30, the curvature-related value calculation unit 17 outputs the determination result Er to the touch panel of the mobile terminal 40 or to the server 20 (see Figure 8).

[0086] After that, the flow shown in Figure 8 is terminated (END).

[0087] In the above configuration, the nominal diameter D and rafter height H of the pipe P included in the inspection image Di are calculated based on the arbitrary interval L1 of a pair of jigs J input from the curvature-related value input unit 16 and the interval in the inspection image Di of the portion of the pair of jigs J at the interval L1. Therefore, it is not necessary to measure the curvature C, chord length L, or rafter height H of the pipe P. Thus, values ​​related to curvature C can be calculated more efficiently and accurately than when measuring the pipe P. This improves the quality of construction management related to bending pipes and prevents the construction of bent pipes with excessive curvature.

[0088] [Embodiment 4] (Schematic configuration) Next, a construction management device 4, which is an embodiment 4 of the construction management device according to the present invention, will be described. Figure 9 is a block diagram showing the schematic configuration of the construction management device 4. Figure 10 is a schematic diagram showing the state in which the actual dimension L2 of the distance between both ends of an electrofusion joint W1, which is the distance between any two points for determining the curvature C in a curved pipeline P, has been selected. Figure 11 is a flowchart showing the construction management method by the construction management device 4. The construction management device 4 differs from the construction management device 3 in that it has an external dimension input section 18. In the following description, components similar to those in embodiment 3 are denoted by the same reference numerals and their descriptions are omitted, and only the parts that differ from embodiment 3 will be described.

[0089] As shown in Figure 9, the construction management device 4 manages the bending and installation of pipelines P using resin pipes W. The construction management device 4 includes a portable terminal 50 that is brought to the site where the bending and installation of pipelines P is performed, and a server 20 that stores various information.

[0090] The mobile terminal 50 inputs and outputs values ​​related to the curvature C of the bent section of the pipeline P. The mobile terminal 50 is composed of a portable smartphone, tablet, etc. The mobile terminal 50 has a curvature determination unit 12, a terminal input / output unit 13, an imaging unit 14, a curvature-related value calculation unit 17, and an external dimension input unit 18.

[0091] The imaging unit 14 photographs the bent portion of the curved pipeline P. The imaging unit 14 is controlled to photograph the pipeline P by a program that controls the construction management device 4. The imaging unit 14 photographs the pipeline P according to the operator's operation. The imaging unit 14 outputs the inspection image Di of the photographed pipeline P to the curvature-related value calculation unit 17.

[0092] The external dimension input unit 18 acquires the external dimensions between two points in any part of the pipeline P. The external dimension input unit 18 is controlled by a program that controls the construction management device 4 to acquire the coordinates of two points in any part of the pipeline P specified on the image and the actual dimension L2 of the distance between both ends of the electrofusion joint W1. The external dimension input unit 18 is electrically connected to the curvature-related value calculation unit 17.

[0093] The external dimensions input unit 18 acquires an inspection image Di from the curvature-related value calculation unit 17. The external dimensions input unit 18 includes, for example, the touch panel of a mobile terminal 50. The external dimensions input unit 18 displays the inspection image Di on the touch panel. The external dimensions input unit 18 also displays, for example, a field on the touch panel for inputting the actual distance L2 between the two ends of the electrofusion joint W1. In this embodiment, the two ends of the electrofusion joint W1 at the connection part of the resin pipe W constituting the pipeline P are set to any two points. The external dimensions input unit 18 acquires the pixel coordinates Pc of the two ends of the electrofusion joint W1 selected on the inspection image Di. The external dimensions input unit 18 acquires the actual distance L2 between the two ends of the electrofusion joint W1 that is entered in the field for inputting the actual distance L2 between the two ends of the electrofusion joint W1. The external dimension input unit 18 outputs the pixel coordinates Pc of both ends of the electrofusion joint W1 and the actual distance L2 between both ends of the electrofusion joint W1 to the curvature-related value calculation unit 17.

[0094] The curvature-related value calculation unit 17 calculates values ​​related to the curvature C of the pipeline P based on the inspection image Di. The curvature-related value calculation unit 17 is controlled by a program that controls the construction management device 4 to calculate values ​​related to the curvature C of the pipeline P based on the inspection image Di. The curvature-related value calculation unit 17 is electrically connected to the imaging unit 14 and the external dimension input unit 18. The curvature-related value calculation unit 17 is also electrically connected to the curvature determination unit 12.

[0095] The curvature-related value calculation unit 17 acquires the inspection image Di captured by the imaging unit 14. The curvature-related value calculation unit 17 has an image extraction function, for example, to extract an image of the pipeline P from the inspection image Di. The curvature-related value calculation unit 17 also has a physical coordinate transformation function, for example, to convert the pixel coordinates Pc at both ends of the electrofusion joint W1 into physical coordinates, and to calculate the nominal diameter D of the resin pipe W, the chord length L of the chord X at an arbitrary position in the curved pipeline P, and the actual height H of the chord based on the actual dimension L2 of the distance between both ends of the electrofusion joint W1 and the image of the pipeline P. The curvature-related value calculation unit 17 outputs the calculated nominal diameter D, chord length L, and height H to the curvature determination unit 12.

[0096] (Construction management method for bending pipes) Using Figures 9 to 11, the construction management method for the bending process of pipeline P using the construction management device 4 will be explained. The construction management method includes a photography process S11, an external dimension input process S121, a curvature-related value calculation process S122, a curvature determination process S20, and an output process S30 (see Figure 11).

[0097] As shown in Figure 11, the construction management method for the bending pipe process in the flowchart is started (START). In the imaging process S11, the imaging unit 14 takes an inspection image Di of the curved pipe P (see Figure 9).

[0098] As shown in Figure 9, the worker takes a photograph of the curved pipeline P using the digital camera of the mobile terminal 50. The imaging unit 14 acquires an inspection image Di including the curved pipeline P. The imaging unit 14 outputs the inspection image Di to the curvature-related value calculation unit 17.

[0099] In the external dimension input process S121, the external dimension input unit 18 obtains the pixel coordinates Pc of both ends of the electrofusion joint W1, which are any two points on the inspection image Di, and the actual dimension L2 of the distance between both ends of the electrofusion joint W1.

[0100] The external dimensions input unit 18 obtains an inspection image Di from the curvature-related value calculation unit 17. The external dimensions input unit 18 obtains the pixel coordinates Pc of both ends of the specified electrofusion joint W1 on the inspection image Di. The curvature-related value calculation unit 17 also obtains the actual dimension L2 of the distance between both ends of the input electrofusion joint W1.

[0101] In the curvature-related value calculation step S122, the curvature-related value calculation unit 17 calculates the nominal diameter D, the chord length L of an arbitrary chord, and the actual height H from the pixel coordinates Pc of any two points on the inspection image Di and the actual distance L2 between the two ends of the electrofusion joint W1.

[0102] The curvature-related value calculation unit 17 acquires an inspection image Di from the imaging unit 14. The curvature-related value calculation unit 17 acquires the pixel coordinates Pc of any two points on the inspection image Di and the actual dimension L2 of the distance between the ends of the electrofusion joint W1 from the curvature-related value calculation unit 17. The curvature-related value calculation unit 17 extracts an image of the pipeline P from the inspection image Di using the image extraction function. The curvature-related value calculation unit 17 uses the physical coordinate transformation function to calculate the nominal diameter D of the resin pipe W constituting the pipeline P, the chord length L of the chord X at an arbitrary position, and the actual dimensions of the arrow height H relative to X from the image of the curved pipeline P. The curvature-related value calculation unit 17 outputs the calculated nominal diameter D, chord length L, and arrow height H to the curvature determination unit 12.

[0103] In the curvature determination process S20, it is determined whether the curvature C of the pipe P is within the acceptable range based on the nominal diameter D, chord length L, and rafter height H.

[0104] In the output process S30, the curvature-related value calculation unit 17 outputs the result Er to the touch panel of the mobile terminal 50 or to the server 20.

[0105] After that, the flow shown in Figure 11 is terminated (END).

[0106] In the above configuration, the values ​​related to the curvature C of the pipeline P included in the inspection image Di are calculated based on the external dimensions of any part of the pipeline P input from the external dimension input unit 18. Therefore, when taking the inspection image Di, it is not necessary to place reference markers, jigs, etc., at predetermined intervals relative to the pipeline P. Thus, values ​​related to the curvature C can be calculated more efficiently and accurately compared to cases where markers, jigs, etc., are placed on the pipeline P. This improves the quality of construction management related to bending the pipeline P and prevents the construction of bent pipes with excessive curvature C.

[0107] (Other embodiments) Although embodiments of the present invention have been described above, the embodiments described above are merely examples for carrying out the present invention. Therefore, the invention is not limited to the embodiments described above, and it is possible to carry out the invention by appropriately modifying the embodiments described above without departing from the spirit of the invention.

[0108] In each of the above embodiments, the construction management devices 1, 2, 3, and 4 are composed of mobile terminals 10, 30, 40, and 50, and a server 20. However, the construction management device may also be configured to store various information using the storage unit of the mobile terminal, without having a server. In this case, the storage unit of the mobile terminal stores construction management plan information.

[0109] In embodiments 2, 3, and 4 described above, the digital cameras of the mobile terminals 10, 30, 40, and 50 are configured as the imaging unit 14. However, the imaging unit may be a separate imaging device such as a digital camera, distinct from the mobile terminal.

[0110] In each of the above embodiments, the curvature determination unit 12 determines whether the curvature C of the pipeline P is within the allowable range based on the chord length L and saddle height H values ​​for each nominal diameter D of the resin pipe W constituting the pipeline P. However, the curvature determination unit may also determine whether the curvature C of the pipeline P is within the allowable range based on dimensions other than the chord length L and saddle height H. For example, the curvature determination unit 12 may calculate the circumference between any two points and determine whether the curvature C of the pipeline P is within the allowable range. Alternatively, the curvature determination unit 12 may calculate the curvature C or the radius of curvature R.

[0111] In each of the above embodiments, the curvature determination unit 12 determines whether the curvature C of the pipeline P is within an acceptable range for each nominal diameter D of the resin pipe W constituting the pipeline P, based on the values ​​of the chord length L and the saddle height H. However, the curvature determination unit may also determine whether the curvature C of the pipeline P is within an acceptable range based on determination criterion information that includes, in addition to the nominal diameter D of the resin pipe W, the material of the resin pipe W, the type of resin pipe W, the length of the resin pipe W, the wall thickness of the resin pipe W, the mechanical properties of the resin pipe W such as the intended use of the resin pipe W, and limitations due to the usage conditions.

[0112] In embodiments 2, 3, and 4 described above, the curvature-related value calculation units 15 and 17 extract images of the pipeline P from the inspection image Di. However, the curvature-related value calculation unit may also be configured so that the portion selected from the inspection image Di by an operator or the like is defined as the pipeline P.

[0113] In the above embodiment 3, the pair of jigs J are used to form a reference chord for calculating the curvature C of the curved pipe P. However, the jigs may also be configured to measure or calculate other parameters.

[0114] In each of the above embodiments, the curvature determination unit 12 transmits a determination result Er to the server 20 if the curvature C of the conduit P is within the acceptable range. However, the curvature determination unit may also be configured to transmit a determination result to the server even if the curvature C of the conduit P is outside the acceptable range.

[0115] In each of the above embodiments, the curvature determination unit 12 outputs a value related to the curvature C of the pipeline P to the server 20 if the curvature C of the pipeline P is within an acceptable range. However, the curvature determination unit may also be configured to output information about the pipeline P other than the value related to the curvature C to the server.

[0116] In the above embodiment 4, the external dimension input unit 18 outputs the pixel coordinates Pc of any two points on the image of the pipeline P and the actual dimension L2 of the distance between both ends of the electrofusion joint W1 to the curvature determination unit 12. However, the external dimension input unit may also be configured to determine whether the curvature C of the pipeline P is within an acceptable range based on the pixel coordinates of three or more points.

[0117] In the above embodiment 4, the external dimension input unit 18 inputs the actual dimension L2, which is the distance between the two ends of the electrofusion joint W1, as any two points. However, the external dimension input unit may also be configured to input two points other than the two ends of the electrofusion joint as any two points. For example, the external dimension input unit may be configured to input the nominal diameter as the actual dimension, with the two ends in the radial direction of the resin pipe as any two points. [Industrial applicability]

[0118] This invention can be used in construction management devices, construction management methods, and programs for managing the bending and installation of pipelines using resin pipes. [Explanation of symbols]

[0119] 1, 2, 3, 4 Construction management device 10, 30, 40, 50 mobile devices 11, 16 Curvature-related value input section 12 Curvature determination section 13 Terminal Input / Output Section 14 Imaging Unit 15, 17 Curvature-related value calculation section 18 External Dimensions Input Section 20 servers 21 Memory section 22 Server Input / Output Section E. Judgment Criteria Information Mp Construction Management Plan Information D Nominal diameter L string length L1 Spacing between a pair of jigs Actual dimensions of the distance between both ends in an L2 electrofusion joint. Di examination images H Yataka X string Pc Pixel Coordinates J Jig Er result P conduit W Resin pipe W1 Electrical Fusion Joint C curvature R radius of curvature

Claims

1. A construction management device for managing the bending and installation of pipelines using resin pipes, A curvature-related value input unit into which values ​​related to the curvature of the pipeline are input, A curvature determination unit that determines whether the curvature of the pipeline is within an acceptable range based on the aforementioned curvature-related value, A construction management device having the following features.

2. In the construction management device according to claim 1, An imaging unit for photographing the aforementioned pipeline, A curvature-related value calculation unit calculates a value related to the curvature of the pipeline based on the inspection image of the pipeline captured by the imaging unit, It further possesses, The curvature determination unit is, When the curvature-related value calculation unit calculates a value related to the curvature, the unit determines whether the curvature of the pipeline is within an acceptable range based on the calculated value related to the curvature. Construction management device.

3. In the construction management device described in claim 2, The imaging unit is The inspection image of the pipeline in which the jig is placed is taken, The curvature-related value calculation unit is: Based on the dimensions of predetermined intervals determined by the jig, which are input from the curvature-related value input unit, and the dimensions of the predetermined intervals on the image, a value related to the curvature of the pipeline is calculated. Construction management device.

4. In the construction management device described in claim 2, The system further includes an external dimensions input section into which the external dimensions of any part of the resin pipe are input. The curvature-related value calculation unit is: Based on the external dimensions of any part of the resin pipe input to the external dimensions input unit and the dimensions of that arbitrary part on the image in the inspection image, a value related to the curvature of the pipeline is calculated. Construction management device.

5. A construction management method for managing the bending and installation of pipelines using resin pipes, A curvature-related value acquisition step for acquiring values ​​related to the curvature in the aforementioned pipeline, or An imaging step for photographing the pipeline and a curvature-related value calculation step for calculating a value related to the curvature of the pipeline based on the captured inspection image of the pipeline. Either of the following processes, A curvature determination step, which determines whether the curvature of the pipeline is within an acceptable range based on the aforementioned curvature-related value, Having, Construction management method.

6. A construction management program for managing the bending and installation of pipelines using resin pipes, On the computer, Obtain a value related to the curvature in the aforementioned pipeline. or The pipeline is photographed, and a value related to the curvature of the pipeline is calculated based on the photographed inspection image of the pipeline. Based on the value related to the curvature, it is determined whether the curvature of the pipeline is within an acceptable range. program.

Images