Piping planning support system, and conduit line construction method

Abstract

To solve the problem involved in a prior art, that is, to provide a piping planning support system that can support appropriate piping planning, and a conduit line construction method using the same.SOLUTION: A piping planning support system of the present application invention is a system that supports planning for constructing a series of conduit lines by connecting pipe bodies (including straight pipes and bent pipes) to each other, and that comprises model storage means, model selection means, bent pipe rotating means, display control means, and connection angle acquisition means. The connection angle acquisition means is means that acquires a "connection angle" at which a bent pipe model is connected to another bent pipe model at a bent pipe connection part. The connection angle is a rotation angle around a central axis that passes through the center of the cross section of the bent pipe model.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to technology relating to pipelines constructed underground, etc., and more specifically, to a piping planning support system capable of acquiring information regarding the posture of curved pipes, and a method of constructing a pipe body using the same. [Background technology]

[0002] Power plants generate electricity at several thousand to tens of thousands of volts, but to avoid losses due to electrical resistance, this electricity is converted to ultra-high voltage of around hundreds of thousands of volts before being transmitted. The voltage is then gradually reduced at each substation, such as ultra-high voltage substations, primary substations, secondary substations, and distribution substations, before being supplied to factories and other facilities, and the voltage is further reduced by pole-mounted transformers before being supplied to homes. In any case, the electricity generated at power plants is supplied to users via transmission lines and distribution lines that use electric wires and cables (hereinafter collectively referred to as "transmission lines, etc.").

[0003] There are overhead transmission lines that are suspended from power poles (overhead transmission lines and overhead distribution lines) and underground transmission lines that are buried underground (underground transmission lines and underground distribution lines), but currently overhead transmission lines are overwhelmingly more common. On the other hand, undergrounding has been promoted in recent years, and for example, 92.6% of lines in Tokyo's 23 wards are underground (as of 2021). However, nationwide, there are still few sections that are underground (just under 20%), and the current situation is that transmission lines suspended from power poles still account for the majority. Another reason for undergrounding is the difficulty of erecting the steel towers necessary for overhead transmission in urban areas.

[0004] Burying overhead power lines underground not only improves the cityscape, but also allows for wider sidewalks and safer use of strollers and wheelchairs as a result of removing power poles. In addition, emergency vehicles can pass more smoothly during disasters such as typhoons and earthquakes, as roads will not be blocked by fallen power poles or sagging overhead power lines. Furthermore, the risk of overhead power lines being cut during disasters is reduced, which reduces the occurrence of power outages and ensures stable electricity supply.

[0005] Usually, sidewalks and roadways are used to bury power lines, etc. In other words, the road is excavated (usually open cut) to install pipes, and the power lines, etc. are housed inside the pipes. A pipe buried underground (hereinafter referred to as an "underground pipe") may consist of only one pipe, but it is often made up of multiple pipes in a set, such as two rows x two levels (i.e., one set of four pipes) or three rows x two levels (i.e., one set of six pipes).

[0006] Incidentally, various structures such as water pipes, sewer pipes, information boxes, utility conduits, and manholes are buried underground (especially under roads). Therefore, when constructing a new underground pipeline, the pipes must be laid while avoiding these existing structures. For example, in a case where the underground pipeline is composed of 3 rows x 2 levels, the pipeline is partially laid in 6 rows x 1 level in order to avoid the underground structures, as shown in Figure 12, a process known as "breaking the pipes."

[0007] To break the pipes, not only pipes with a straight axis (hereafter simply referred to as "straight pipes") but also pipes with a curved axis (hereafter simply referred to as "curved pipes") were used, and the following procedure was followed on-site: First, the curved pipe to be applied was provisionally selected based on the apparent horizontal and vertical alignments. Next, the curved pipe was temporarily connected and rotated to determine whether it could be positioned appropriately. This process was then repeated several times to determine the position of the curved pipe. This series of tasks relied heavily on the skills and intuition of engineers with considerable experience, which meant that experienced engineers were essential to constructing underground pipelines.

[0008] When constructing underground pipelines, a piping plan may be made. In this case, for the reasons mentioned above, it is necessary to make a plan not only in a horizontal linear form but also in a three-dimensional linear form. For this reason, in recent years, piping plans are sometimes made using three-dimensional CAD (Computer Aided Design) as shown in FIG. 13, and various related techniques have been proposed. For example, Patent Document 1 proposes a technique in which several piping patterns made up of multiple pipes are prepared, and piping plans can be made while referring to these piping patterns. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2007-328550 A Summary of the Invention [Problem to be solved by the invention]

[0010] As mentioned above, construction of underground pipelines, including pipe breaking, requires experienced engineers. However, such engineers are limited, and in addition, due to the chronic labor shortage problem in the construction industry in recent years, it is difficult to secure appropriate engineers at the right time. Therefore, it is desirable to carry out an appropriate piping plan in advance. If an appropriate piping plan is obtained, construction of underground pipelines, including pipe breaking, can be carried out without securing experienced engineers. However, conventional technologies such as Patent Document 1 could not plan complex linear shapes such as pipe breaking. In particular, even if it was possible to use 3D CAD to determine the posture (pipe axis direction) of a curved pipe while visually checking the display, there was no technology to accurately convey information about that posture to the site.

[0011] An object of the present invention is to solve the problems associated with the conventional technology, that is, to provide a piping plan support system capable of supporting appropriate piping plans, and a pipe construction method utilizing the same. [Means for solving the problem]

[0012] The present invention was made by utilizing 3D CAD and focusing on obtaining numerical information about the angle at which a curved pipe model connects to other pipes, and is based on an unprecedented idea.

[0013] The piping planning support system of the present invention is a system for supporting a plan for constructing a series of pipelines by connecting pipes (including straight pipes and curved pipes), and is provided with a model storage means, a model selection means, a curved pipe rotation means, a display control means, and a connection angle acquisition means. Among these, the model storage means is a means for storing "pipe models" including a "straight pipe model" that models a straight pipe and a "curved pipe model" that models a curved pipe. The model selection means is a means for selecting one pipe model from the pipe models stored in the model storage means by an operator's operation, and the curved pipe rotation means is a means for changing the attitude of the curved pipe model at a "bent pipe connection part (a part where a curved pipe model is connected to another pipe model)" by an operator's operation. The display control means is a means for displaying the pipe model in a three-dimensional space model, and the connection angle acquisition means is a means for acquiring a "connection angle (an angle at which a curved pipe model is connected to another pipe model)" at a curved pipe connection part. The model storage means stores a plurality of types of straight pipe models and a plurality of types of curved pipe models. The display control means displays the pipe model at a position in the three-dimensional space model designated by the operator, and displays the pipe model in the position changed by the curved pipe rotation means. The connection angle is the rotation angle around the "central axis" that passes through the center of the cross section of the curved pipe model.

[0014] The piping planning support system of the present invention can display an angle scale on the pipe model on which a socket is formed, and a reference position on the pipe model on which an insertion port is formed. In this case, the pipe model has a socket formed on one end side and an insertion port formed on the other end side, and the pipe models arranged consecutively are connected so that the insertion port of one pipe model is inserted into the socket of the other pipe model. The angle scale is an angle around the central axis and is displayed on the outer periphery of the socket. The reference position is a predetermined position on the outer periphery of the insertion port. In this case, the connection angle can be confirmed by comparing the reference position with the angle scale.

[0015] The piping plan support system of the present invention can display an angle scale on a pipe model in which an insertion port is formed, and a reference position on a pipe model in which a receiving port is formed.

[0016] The piping plan support system of the present invention may be configured such that the display position of the pipe model selected by the model selection means is automatically determined. In this case, the display control means displays the selected pipe model so as to be connected to the displayed pipe model when the operator designates the displayed pipe model.

[0017] The piping plan support system of the present invention may further include a result output means for outputting the connection order, the pipe specifications, and the connection angle of the curved pipe connection portion for each pipe model.

[0018] The pipeline construction method of the present invention is a method for constructing a series of pipelines using the piping plan support system of the present invention, and includes a planning step, a scale display step, and a piping step. In the planning step, a piping plan is formulated using the piping plan support system, and in the scale display step, an angle scale is applied to the outer periphery of one of the pipes to be connected at a curved pipe connection portion, and a reference position is applied to the outer periphery of the other pipe. In the piping step, the pipes are connected based on the piping plan formulated in the planning step. The piping plan includes the connection order and pipe specifications for each pipe model output using the piping plan support system, and the connection angle for the curved pipe connection portion. In the piping step, the posture of the curved pipe is adjusted based on the connection angle, the angle scale, and the reference position. Effect of the Invention

[0019] The piping plan support system and the pipeline construction method of the present invention have the following effects. (1) Given the chronic labor shortage in the construction industry in recent years, pipeline construction work can be carried out without securing experienced engineers. (2) When pipe breaking is performed, it is possible to plan the piping over the shortest possible distance, thereby reducing construction costs. (3) Since the bent pipes that will actually be used are clearly defined, there is no need to prepare extra bent pipes during construction. (4) Since trial and error work such as selecting and arranging curved pipes at the construction site is no longer necessary, work time can be reduced. (5) By using 3D CAD, piping plans can be made while visually checking the display, so that the piping status can be confirmed intuitively. [Brief description of the drawings]

[0020] [Figure 1] (a) is a side view showing a schematic of a straight pipe among the pipe bodies, (b) is a side view showing a schematic of a curved pipe among the pipe bodies, (c) is a front view showing a schematic of a receiving end of the pipe body, and (d) is a front view showing a schematic of a insertion end of the pipe body. [Diagram 2](a) is a plan view showing three pipes connected by inserting the insertion end into the receiving end, and (b) is a cross-sectional view showing the "reference position" and "connection angle" at the curved pipe connection. [Diagram 3] 1 is a block diagram showing a main configuration of a piping plan support system according to the present invention; [Figure 4] 1A is a screen diagram showing a state in which a straight pipe model is specified on a display means, and FIG. 1B is a screen diagram showing a bent pipe model connected to the straight pipe model. [Diagram 5] 1A is a screen shot showing a pipe model at an intermediate stage of "pipe breaking" displayed on the display means, and FIG. 1B is a screen shot showing a pipe model at a completed stage of "pipe breaking" displayed on the display means. [Figure 6] 1A is a screen diagram showing the curved pipe model before rotation displayed on the display means, and FIG. 1B is a screen diagram showing the curved pipe model rotated by the curved pipe rotation means displayed on the display means. [Figure 7] A screen shot showing a straight pipe model with a reference position affixed and a curved pipe model with an angle scale affixed. [Figure 8] 1 is a plan view showing a schematic example of an angle scale. [Figure 9] (a) is a model diagram showing a schematic diagram of a state in which a reference position is affixed to the insertion side of a curved pipe model and an angle scale is affixed to the receiving side of a straight pipe model, and (b) is a model diagram showing a schematic diagram of a state in which an angle scale is affixed to the insertion side of a curved pipe model and a reference position is affixed to the receiving side of a straight pipe model. [Figure 10] FIG. 13 is a model diagram showing a schematic diagram of a piping plan composed of a plurality of pipe body records. [Figure 11] FIG. 2 is a flow chart showing the flow of main steps of the pipeline construction method of the present invention. [Figure 12] A perspective view showing the broken 3-row x 3-tier pipeline. [Figure 13] An image showing the pipeline and existing underground structures on a display. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] An example of an embodiment of the piping plan support system and the pipeline construction method of the present invention will be described with reference to the drawings. Note that the present invention can be used when constructing pipelines in various locations, not just underground, but for convenience, an example of constructing an underground pipeline will be described here.

[0022] 1.Definition Before describing the embodiments of the present invention, the following definitions of terms used herein will be given.

[0023] (3D space model) The piping planning support system of the present invention can use so-called three-dimensional CAD, and therefore can express a space modeled in three dimensions. Here, this space is referred to as a "three-dimensional space model." For example, an underground space formed by excavating the ground to construct an underground pipeline can be this three-dimensional space model. The three-dimensional space model is naturally placed in a coordinate system consisting of three axes (for example, X-axis, Y-axis, and Z-axis), and is therefore formed by points, lines (polylines), and surfaces (polygons) having three-dimensional coordinates. The three-dimensional space model also includes underground topography, as well as existing and planned underground structures such as water pipes, sewer pipes, information boxes, utility conduits, manholes, and earth retaining walls.

[0024] (Body) An underground pipeline is formed by connecting pipe materials made of, for example, CPFP (Curtail Polyester Concrete Fiberglass Reinforced Plastic). Here, pipe materials such as CPFP pipes are referred to as "pipe body TM". As shown in FIG. 1, the pipe body TM has a "socket SC" at one end (left side in the figure) and an "insertion port IN" at the other end (right side in the figure). This socket SC is a so-called socket (joint) with an expanded cross section as shown in FIG. 1(c), and has a larger hole diameter than the cross section of the insertion port IN shown in FIG. 1(d). Thus, two adjacent pipe bodies TM are connected by inserting the insertion port IN of one pipe body TM (left side in the figure) into the socket SC of the other pipe body TM (right side in the figure) as shown in FIG. 2(a).

[0025] The tube TM is cylindrical with a circular hole inside, and has a tube axis (hereinafter simply referred to as the "central axis") that passes through the center of the circular hole (pipe cross section) as shown in FIG. 2(a). The tube TM includes a "straight tube TS" whose central axis is a straight line as shown in FIG. 1(a) and a "curved tube TB" whose central axis is a curved line (arc) as shown in FIG. 1(b). In other words, the tube TM is a general term for a straight tube TS and a curved tube TB. As described above, the tube TM is connected by inserting the insertion port IN into the receiving port SC. For convenience, the part where the tubes TM are connected to each other as shown in FIG. 2(a) is referred to as the "connection part", and the connection part where the insertion port IN of the curved tube TB is inserted into the receiving port SC of another tube TM (straight tube TS or curved tube TB) is specifically referred to as the "bent pipe connection part".

[0026] (Tube model) The pipe body TM (i.e. straight pipe TS and curved pipe TB) represents the actual pipe material, and therefore cannot be directly handled in 3D CAD. For this reason, the modeled (quantified, so to speak) data for these is handled in 3D CAD. For convenience, the modeled straight pipe TS will be referred to as the "straight pipe model," and the modeled curved pipe TB will be referred to as the "curved pipe model," and the straight pipe model and curved pipe model will be collectively referred to as the "pipe body model."

[0027] A pipe model (i.e., a straight pipe model or a curved pipe model) is formed as a three-dimensional shape by points, lines (polylines), and surfaces (polygons) that have three-dimensional coordinates. The pipe model can also include attribute information such as the pipe type, which indicates whether the pipe is straight or curved, and the pipe TM specifications such as the pipe diameter, curvature radius, pipe length, and weight (hereinafter referred to as "pipe specifications").

[0028] (Reference position and connection angle) FIG. 2(b) is a cross-sectional view showing a schematic diagram of the "reference position" and the "connection angle" in the curved pipe connection part. The "reference position" is set at a predetermined position in the cross section of the pipe body TM. For example, in FIG. 2(b), the "12 o'clock" position (i.e., the top) is set as the reference position in a clock. On the other hand, the "connection angle" is a rotation angle around the central axis, and is a central angle based on the reference position. For example, in FIG. 2(b), the connection angle is shown to be between "12 o'clock and 4 o'clock" in a clock. This connection angle is a value indicating the direction of the central axis in the socket SC, that is, how much it should be rotated when connecting the curved pipe TB. Therefore, it is advisable to determine the reference posture of the curved pipe TB (hereinafter simply referred to as the "reference posture") in advance. For example, the "reference posture" can be set to the time when the central axis of the curved pipe TB is contained in a vertical plane and the socket SC faces upward. In this case, the bent pipe TB with a connection angle of +45° is connected by rotating 45° clockwise from the reference position, and the bent pipe TB with a connection angle of 0° is connected in the same position as the reference position.

[0029] 2. Piping planning support system Next, the piping plan support system of the present invention will be described. The pipeline construction method of the present invention is a method for connecting pipes based on a piping plan obtained using the piping plan support system of the present invention. Therefore, the piping plan support system of the present invention will be described first, and then the pipeline construction method of the present invention will be described.

[0030] 3 is a block diagram showing the main components of the piping plan support system 100 of the present invention. As shown in this figure, the piping plan support system 100 of the present invention is configured to include a model selection means 101, a curved pipe rotation means 103, a display control means 102, and a connection angle acquisition means 104, and can also be configured to further include a result output means 105, a display means 106, a model storage means 107, an angle scale to be described later, and the like.

[0031] The model selection means 101, the curved pipe rotation means 103, the display control means 102, the connection angle acquisition means 104, and the result output means 105 constituting the piping plan support system 100 can be manufactured as dedicated means, or a general-purpose computer device can be used. That is, a specific process for each means is performed by making the computer device execute arithmetic processing by a predetermined program (e.g., 3D CAD). This computer device includes a processor such as a CPU, memories such as a ROM and a RAM, and some further include input means such as a mouse and a keyboard, and a display, and can be configured, for example, by a personal computer (PC) or a server. When a computer device with a display is used, the display may be used as the display means 106.

[0032] The model storage means 107 can utilize a storage device of a general-purpose computer (for example, a personal computer) or can be built in a database server. When built in a database server, it can be placed in a local network (LAN: Local Area Network) or can be a cloud server that stores data via the Internet.

[0033] Hereinafter, each of the main elements constituting the piping plan support system 100 of the present invention will be described in detail.

[0034] (Model storage means) The model storage means 107 is a means for storing a plurality of types of pipe models. More specifically, the model storage means 107 stores a plurality of types of straight pipe models having different pipe specifications (particularly, pipe diameter and pipe length) and a plurality of types of curved pipe models having different pipe specifications (particularly, curvature radius, pipe diameter, and pipe length).

[0035] (Model Selection Method) The model selection means 101 is a means by which an operator selects a desired tube model from among the tube models stored in the model storage means 107. When selecting a tube model, the operator may specify the desired tube model using a pointing device (such as a mouse, touch panel, pen tablet, touch pad, track pad, track ball, etc.) or a keyboard while visually checking a list or drawing of tube models displayed on a display means 106 such as a display. Alternatively, the operator may directly specify the desired tube model by inputting an identifier (ID: IDentification) of the tube model.

[0036] (Display control means) The display control means 102 is a means for displaying the pipe model in the three-dimensional space model. Specifically, when the operator selects a desired pipe model using the model selection means 101, the display control means 102 displays the selected pipe model on the display means 106. At this time, the pipe model can be displayed at a position in the three-dimensional space model designated by the operator using a pointing device or the like. Alternatively, when the operator designates a desired pipe model using a pointing device or the like from among the pipe models already displayed on the display means 106, the newly selected pipe model can be displayed so as to be connected to the displayed pipe model. For example, in FIG. 4(a), the straight pipe model TSM displayed on the display means 106 is designated, while the operator selects the curved pipe model TBM using the model selection means 101. As a result, the curved pipe model TBM is displayed in a state in which the insertion port IN of the curved pipe model TBM is inserted into the receiving port SC of the straight pipe model TSM, as shown in FIG. 4(b). In this case, it is advisable to display the curved pipe model TBM in a predetermined (i.e., default) position, such as in the reference position.

[0037] (Means for rotating curved pipes) The curved pipe rotation means 103 is a means for changing the posture of the curved pipe model TBM at the curved pipe connection portion. Specifically, when the operator operates to change the posture of the desired pipe model using a pointing device or the like, the display control means 102 displays the curved pipe model TBM on the display means 106 in response to the operation. Here, a situation in which the posture of the curved pipe model TBM is changed by the curved pipe rotation means 103 will be described with reference to FIG. 5. FIG. 5 is a screen diagram in which the pipe model is displayed on the display means 106, where (a) shows an intermediate stage of "pipe breaking" and (b) shows a stage in which "pipe breaking" is completed. Here, "pipe breaking" refers to partially piping an underground pipe of n rows x m stages in (n x m) rows x 1 stage, for example, to avoid an underground structure, as described above.

[0038] In Fig. 5, an example of pipe breaking is shown in which an underground pipe is basically configured with 2 rows x 2 levels, and 3 spans (3 pipe sections) are set as a change section, and then the pipe is rearranged to 4 rows x 1 level. In this case, as shown in Fig. 5(a), first, 2 rows x 2 levels of straight pipe models TSM are placed in front of the change section, and 2 rows of straight pipe models TSM are placed in the lower section in the change section, and further, 4 rows x 1 level of straight pipe models TSM are placed in front of the change section. At this time, the operator selects the desired straight pipe model TSM using the model selection means 101, and the display control means 102 displays the straight pipe model TSM on the 3D space model based on the position specified by the operator and the pipe model already displayed, as described above.

[0039] When a predetermined straight pipe model TSM is arranged, the upper two rows of curved pipe models TBM are arranged as shown in FIG. 5(b). Although FIG. 5(b) shows the completed form, such arrangement is not decided at once. In reality, the completed form is decided after repeated trial and error, by repeatedly selecting curved pipe models TBM with various pipe specifications (particularly, curvature radius) using the model selection means 101, or by changing the connection angle at the curved pipe connection part using the curved pipe rotation means 103 as shown in FIG. 6. FIG. 6 is a screen diagram showing a situation in which the curved pipe model TBM is rotated by the curved pipe rotation means 103, (a) shows the state before rotation, and (b) shows the state after rotation. In the past, such trial and error was repeated at the construction site, so the time required for work was long, and it was necessary to prepare various possible curved pipes TB. In contrast, in the present invention, trial and error is performed at the planning stage, so the work time at the construction site is not long, and there is no need to prepare extra curved pipes TB.

[0040] (Method of acquiring connection angle) The connection angle acquisition means 104 is a means for acquiring a connection angle at a curved pipe connection part. Since a three-dimensional CAD is used, the connection angle can be obtained by performing spatial calculations, and the connection angle acquisition means 104 can acquire the value as the connection angle. Alternatively, as shown in FIG. 7, an "angle scale 108" can be attached to one pipe model (the socket SC of the straight pipe model TSM in the figure) at the curved pipe connection part, and a "reference position" can be attached to the other pipe model (the curved pipe model TBM in the figure), so that the operator can visually confirm the connection angle. Of course, the connection angle can also be obtained by spatial calculations, and then the connection angle can be visually confirmed.

[0041] Here, the angle scale 108 is a ruler that indicates connection angles at regular intervals, and is arranged in the circumferential direction of the tube model. For example, FIG. 8 shows an angle scale 108 that displays connection angles in 30° increments from 0° to 180°, and an angle scale 108 that displays connection angles in 30° increments from -30° to -150°. Note that in this figure, the angle scale 108 is shown in two parts for convenience, but of course the angle scale 108 is arranged as a series on the tube model. In addition, the angle scale 108 can be in various forms, not limited to the angle scale 108 in FIG. 8, as long as it can display connection angles on the peripheral surface of the tube model, and it can display connection angles at desired intervals, not limited to 30° increments. Since this angle scale 108 is displayed on a three-dimensional space model, it is formed by points, line segments (polylines), and faces (polygons) having three-dimensional coordinates, similar to the tube model.

[0042] As shown in FIG. 7, a reference position is attached to one pipe model, and an angle scale 108 is attached to the other pipe model, so that the connection angle of the angle scale 108 at the reference position can be read. This allows the connection angle to be communicated to the worker, and the curved pipe TB can be positioned at the construction site so that it rotates by the connection angle from the reference position and then connected. The reference position and angle scale 108 at the curved pipe connection part may be attached to either pipe model. For example, in FIG. 9(a), a reference position is attached to the insertion port IN side of the curved pipe model TBM, and an angle scale 108 is attached to the receiving port SC side of the straight pipe model TSM. In contrast, in FIG. 9(b), an angle scale 108 is attached to the insertion port IN side of the curved pipe model TBM, and a reference position is attached to the receiving port SC side of the straight pipe model TSM.

[0043] (Result output means) A pipe model can be placed from a starting point to a destination while avoiding existing underground structures. In other words, when a plan for constructing an underground pipeline (hereinafter referred to as a "piping plan") is determined, the result output means 105 outputs the piping plan. This piping plan can be configured as a record for each pipe model (hereinafter referred to as a "pipe record"). For example, as shown in FIG. 10, a "pipe identifier (ID)" for identifying the pipe TM, a "connection order" which is the order of placement counted from the starting point, "pipe specifications" such as pipe type, pipe diameter, and curvature radius, and a "connection angle" at a curved pipe connection part are set as one pipe record, and a table consisting of multiple pipe records can be output as a piping plan. Then, for example, the piping plan output on paper or the like is brought to the construction site, the pipe TM box is connected while checking the piping plan, and the posture of the curved pipe TB is determined based on the connection angle in the piping plan.

[0044] 3. Pipe construction method Next, the pipeline construction method of the present invention will be described. The pipeline construction method of the present invention is a method of connecting pipes based on a piping plan obtained using the piping plan support system 100 described so far. Therefore, we will avoid explanations that overlap with the contents explained about the piping plan support system 100, and will only explain the contents unique to the pipeline construction method of the present invention. In other words, the contents not described here are the same as those explained in "2. Piping plan support system", including "1. Definition".

[0045] Fig. 11 is a flow diagram showing the flow of the main steps of the pipeline construction method of the present invention. When connecting pipes using the piping plan support system 100 of the present invention, first, a "piping plan" is formulated using the piping plan support system 100 (Step 201 in Fig. 11). Then, the piping plan output by the result output means 105 is brought to the construction site and communicated to each worker.

[0046] A designated worker prepares straight pipes TS and curved pipes TB to be used based on a piping plan. At this time, it is advisable to arrange the straight pipes TS and curved pipes TB in the order of connection. Next, a reference position and angle scale 108 are set on the curved pipes TB and straight pipes TS, or on the curved pipes TB and curved pipes TB that make up the curved pipe connection section (Step 202 in FIG. 11). For example, a tape-like angle scale 108 as shown in FIG. 8 can be affixed to the outer periphery of the socket SC of the straight pipe TS (or curved pipe TB), or the connection angle scale can be directly indicated on the outer periphery of the socket SC with a marker or the like. Similarly, the reference position can be directly indicated on the outer periphery of the curved pipe TB (or straight pipe TS) with paint or the reference position can be indicated by attaching a sticker or the like prepared in advance. In addition, a reference position can be set on the insertion port IN side of the curved pipe TB, and an angle scale 108 can be set on the receiving port SC side of the other pipe body TM, or an angle scale 108 can be set on the insertion port IN side of the curved pipe TB, and a reference position can be set on the receiving port SC side of the other pipe body TM.

[0047] Once the reference position and angle scale 108 are set on the pipe body TM of the curved pipe connection portion, a straight pipe TS and a curved pipe TB are connected based on the piping plan (Step 203 in FIG. 11). In particular, for the curved pipe TB, the curved pipe TB is rotated until it is in the specified position while checking the connection angle in the piping plan (Step 204 in FIG. 11). For example, the curved pipe TB is first connected in the reference position, and then the curved pipe TB can be rotated until the scale corresponding to the connection angle among the angle scales 108 matches the reference position. [Industrial Applicability]

[0048] The piping plan support system and the pipeline construction method of the present invention can be used when burying various linear objects underground, including power transmission lines, power distribution lines, and information and communication lines. The present invention can realize undergrounding of electric cables efficiently and at low cost, which will contribute to the promotion of undergrounding of electric cables. Considering this, the invention can be said to be not only applicable to industry, but also to be expected to make a great contribution to society. [Explanation of symbols]

[0049] 100 Piping planning support system of the present invention 101 Model selection method (for piping planning support systems) 102 (Piping planning support system) display control means 103 (Piping planning support system) Bend pipe rotation means 104 (Piping planning support system) Connection angle acquisition means 105 (Piping planning support system) result output means 106 Display means (of piping planning support system) 107 Model storage means (for piping planning support system) 108 (Piping Planning Support System) Angle Scale IN port SC Insertion Port TB intubation tube TBM curved pipe model TM Intubation Body TS straight tube TSM Straight Model

Claims

1. A system for assisting in planning for constructing a series of pipelines by connecting pipes including straight pipes and curved pipes, comprising: a model storage means for storing pipe models including a straight pipe model that models the straight pipe and a curved pipe model that models the curved pipe; a model selection means for selecting one of the tube models stored in the model storage means by an operator's operation; a curved pipe rotation means for changing the posture of the curved pipe model by an operator at a curved pipe connection portion where the curved pipe model is connected to another pipe model; a display control means for displaying the tube model in a three-dimensional space model; a connection angle acquisition means for acquiring a connection angle at which the curved pipe model is connected to another pipe model at the curved pipe connection portion, the model storage means stores a plurality of types of the straight pipe models and a plurality of types of the bent pipe models; the display control means displays the tube model at a position in the three-dimensional space model designated by an operator; The display control means displays the pipe model in the posture changed by the curved pipe rotation means, The connection angle is a rotation angle around a central axis passing through the cross-sectional center of the curved pipe model. A piping plan support system comprising:

2. The pipe model has a socket on one end and a plug on the other end, the pipe models arranged successively are connected such that the insertion port of one of the pipe models is inserted into the receiving port of the other pipe model; In the curved pipe connection portion, an angle scale is displayed on the pipe model in which the receiving port is formed, and a reference position is displayed on the pipe model in which the insertion port is formed; The angle scale is an angle around the central axis and is displayed on the outer periphery of the socket; The reference position is a predetermined position on the outer periphery of the insertion port, The connection angle can be confirmed by comparing the reference position with the angle scale.

2. The piping plan support system according to claim 1.

3. The pipe model has a socket on one end and a plug on the other end, the pipe models arranged successively are connected such that the insertion port of one of the pipe models is inserted into the receiving port of the other pipe model; In the curved pipe connection portion, an angle scale is displayed on the pipe model in which the insertion port is formed, and a reference position is displayed on the pipe model in which the receiving port is formed; The angle scale is an angle around the central axis and is displayed on the outer periphery of the insertion port; The reference position is a predetermined position on the outer periphery of the socket, The connection angle can be confirmed by comparing the reference position with the angle scale.

2. The piping plan support system according to claim 1.

4. The pipe model has a socket on one end and a plug on the other end, the pipe models arranged successively are connected such that the insertion port of one of the pipe models is inserted into the receiving port of the other pipe model; the display control means, when an operator designates the displayed tube model, displays the tube model selected by the model selection means so as to be connected to the displayed tube model.

2. The piping plan support system according to claim 1.

5. A result output means for outputting a piping plan of the pipe body model is further provided, the result output means outputs, for each of the pipe models, a connection order, a specification of the pipe, and the connection angle related to the curved pipe connection portion.

2. The piping plan support system according to claim 1.

6. A method for constructing a series of pipelines by connecting the pipes using the piping plan support system according to claim 1, comprising the steps of: A planning process of formulating a piping plan using the piping plan support system; a scale marking step of marking an angle scale around the central axis on an outer periphery of one of the pipes connected at the curved pipe connection portion and marking a reference position at a predetermined position on an outer periphery of the other pipe; a piping step of connecting the pipes based on the piping plan formulated in the planning step, the piping plan includes a connection order for each of the pipe models output by using the piping plan support system, specifications of the pipes, and the connection angle for the curved pipe connection portion, In the piping step, the attitude of the curved pipe is adjusted based on the connection angle, the angle scale, and the reference position. A pipeline construction method comprising:

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