Piping design support device and piping design support method

Abstract

To provide a pipeline design support device capable of appropriately creating a pipe division drawing according to a policy determined by a business entity, regardless of the skill of a designer.SOLUTION: A pipeline design support device that generates a proper pipeline by optimizing a connection mode of any one of pipes constituting a base pipeline so as to satisfy a predetermined design condition for the base pipeline including deformed pipes arranged at intersections and straight pipes and necessary cut pipes connecting each deformed pipe, comprises: a change target extraction unit that extracts a pipe whose connection mode can be changed and an intersection associated with the pipe; an evaluation target pipeline generation unit that generates a plurality of pipeline patterns with different connection modes for each intersection, and combines the pipeline patterns to generate a plurality of evaluation target pipelines corresponding to the base pipeline; an evaluation value calculation unit that calculates an evaluation value corresponding to the predetermined design condition for each evaluation target pipeline; and a proper pipeline generation unit that generates any of the evaluation target pipelines as a proper pipeline based on the evaluation value.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a piping design support device and a pipeline design support method. [Background technology]

[0002] Patent Document 1 discloses a drawing information management device that uses a computer to manage a piping network such as a water supply pipe network. This drawing information management device is equipped with a functional block that executes a process called pipe division, which divides a pipeline between intersecting connection points, which is represented as a single pipe in the piping network, into multiple pipes that are actually laid.

[0003] Using a piping design support device equipped with such functional blocks, a designer specifies multiple intersections from a start point to an end point on a road on a map displayed on the display unit, then generates a pipeline that passes through each intersection (the pipeline is called a planned line) and generates a pipe layout drawing that represents the pipeline with multiple pipes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 08-287132 Summary of the Invention [Problem to be solved by the invention]

[0005] However, design policies regarding pipe division drawings vary from one business entity to another, so designers must proceed with design work in accordance with the policies established by each business entity. For example, there may be a design that prioritizes the environment so as to reduce the amount of remaining pipe, which is the remainder of the cut pipe, or a design that prioritizes economy so as to minimize costs.

[0006] However, carrying out appropriate design work to comply with the individual, different policies of each business entity can be a time-consuming and complicated task even for an experienced designer, and depending on the designer's skill level, it may be difficult to design in accordance with the policies.

[0007] In view of the above-mentioned problems, an object of the present invention is to provide a piping design support device and a pipeline design support method that can appropriately create pipe layout drawings in accordance with the policy set by a business entity, regardless of the skill level of the designer. [Means for solving the problem]

[0008] In order to achieve the above object, a first characteristic configuration of the piping design support device according to the present invention is a method for designing a base pipeline including special pipes arranged at a plurality of intersections from a start point to an end point specified on a map, and straight pipes and necessary cut pipes connecting the special pipes, so as to satisfy a predetermined design condition. Deformity Tube Receiving and inserting the joint A pipeline design support device for generating an appropriate pipeline with an optimized connection mode, comprising: Either reception-insertion, insertion-reception, or reception-reception Changeable Deformity Tube and its Deformity A change object extraction unit extracts the intersection points associated with pipes, and the connection state differs for each of the intersection points extracted by the change object extraction unit. Using special shaped pipes The system includes an evaluation target pipeline generation unit that generates a plurality of piping patterns and combines the piping patterns to generate a plurality of evaluation target pipelines corresponding to the base pipeline, an evaluation value calculation unit that calculates an evaluation value corresponding to the predetermined design conditions for each evaluation target pipeline generated by the evaluation target pipeline generation unit, an appropriate pipeline generation unit that generates one of the evaluation target pipelines as the appropriate pipeline based on the evaluation value calculated by the evaluation value calculation unit, and a drawing output unit that outputs the appropriate pipeline generated by the appropriate pipeline generation unit as a pipeline design drawing.

[0009] A base pipeline is generated by placing special-shaped pipes at multiple intersections from the start point to the end point specified on the map, and connecting each special-shaped pipe with straight pipes and necessary cut pipes. JointConnection mode Either reception-insertion, insertion-reception, or reception-reception Changeable deformed tube And that deformed tube An intersection point associated with is extracted from the base pipeline by a change target extraction unit, a plurality of piping patterns are generated for each extracted intersection point by an evaluation target pipeline generation unit, and a plurality of evaluation target pipelines are generated by combining the piping patterns for each intersection point. An evaluation value for each evaluation target pipeline is calculated by an evaluation value calculation unit, an evaluation target pipeline selected by an appropriate pipeline generation unit based on the evaluation value is generated as an appropriate pipeline, and the appropriate pipeline is output by a drawing output unit.

[0010] The second characteristic configuration is, in addition to the first characteristic configuration described above, that the evaluation value calculation unit calculates a normalized value for each design condition as the evaluation value so that relative evaluation can be performed between different design conditions.

[0011] The evaluation value calculated by the evaluation value calculation unit is a value according to a predetermined design condition, and if the design conditions are different, the evaluation value will also be different. Even if a high evaluation value is obtained for an evaluation target pipeline under a specific design condition, a balanced evaluation cannot be performed unless it is possible to perform a relative evaluation of the value under other design conditions. In such a case, an appropriate relative evaluation can be performed by calculating an evaluation value normalized for each design condition.

[0012] The third characteristic configuration is, in addition to the second characteristic configuration described above, that the evaluation value calculation unit calculates, as the evaluation value, a value obtained by weighting and adding normalized values ​​for each of the design conditions with a predetermined weighting coefficient so that different design conditions can be combined for evaluation.

[0013] For multiple pipelines to be evaluated, a pipeline evaluated only under specific design conditions will have a certain bias, and will not necessarily be a preferable pipeline when other design conditions are taken into consideration. Therefore, by using a weighted sum of evaluation values ​​normalized for each design condition and weighted by a predetermined weighting coefficient as the final evaluation value, it becomes possible to generate a balanced pipeline as the appropriate pipeline.

[0014] The fourth characteristic configuration is, in addition to the first characteristic configuration described above, further comprising a design condition selection unit which selects the predetermined design condition from a plurality of preset design conditions, and calculates an evaluation value corresponding to the design condition selected by the design condition selection unit.

[0015] Since it becomes possible to select the design conditions to be evaluated in advance, design support with a high degree of freedom becomes possible.

[0016] The fifth characteristic configuration of the same is that, in addition to any of the first to fourth characteristic configurations described above, the specified design conditions include an environmental priority condition that minimizes the pipe elongation of the remaining pipe caused by cutting pipes required for pipe connection.

[0017] If the design conditions to be evaluated are environmentally-friendly conditions that minimize the length of remaining pipes, there will be less remaining pipes and post-processing during construction will be easier.

[0018] The sixth characteristic configuration of the present invention is that, in addition to any of the first to fifth characteristic configurations described above, the specified design conditions include an economic priority condition that minimizes the costs required for pipeline construction.

[0019] If the design conditions to be evaluated are economical conditions that prioritize minimizing the costs required for pipeline construction, construction with excellent economic efficiency will be possible.

[0020] A first characteristic configuration of the pipeline design support method according to the present invention is a method for designing a pipeline including a base pipeline including special-shaped pipes arranged at a plurality of intersections from a start point to an end point specified on a map, and straight pipes and necessary cut pipes connecting the special-shaped pipes, so as to satisfy a predetermined design condition. Deformity Tube Receiving and inserting the joint A pipeline design support method for generating an appropriate pipeline having an optimized connection mode by using a computer, comprising: Either reception-insertion, insertion-reception, or reception-reception Changeable Deformity Tube and its Deformity A change target extraction process for extracting the intersection points associated with pipes, and the connection state is different for each of the intersection points extracted by the change target extraction process. Using special shaped pipesThe computer executes an evaluation target pipeline generation process that generates a plurality of piping patterns and combines each piping pattern to generate a plurality of evaluation target pipelines corresponding to the base pipeline; an evaluation value calculation process that calculates an evaluation value corresponding to the specified design conditions for each evaluation target pipeline generated in the evaluation target pipeline generation process; an appropriate pipeline generation process that generates one of the evaluation target pipelines as an appropriate pipeline based on the evaluation value calculated in the evaluation value calculation process; and a drawing output process that outputs the appropriate pipeline generated in the appropriate pipeline generation process as a pipeline design drawing. Effect of the Invention

[0021] As described above, according to the present invention, it is possible to provide a piping design support device and a pipeline design support method that are capable of creating appropriate pipe layout drawings in accordance with the policy set by the business entity, regardless of the skill of the designer. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is an explanatory diagram of a piping design support device according to the present invention. [Diagram 2] (a) is an explanatory diagram of the route of the main pipe and the branch pipe connecting the specified intersections, and (b) is an explanatory diagram of the pipe layout diagram automatically generated by the piping design support device. [Diagram 3] A flowchart showing a procedure for generating a pipe layout diagram using the piping design support device according to the present invention. [Figure 4] Explanation of base pipeline [Diagram 5] (a) to (e) are explanatory diagrams of piping patterns, and (f) is an explanatory diagram showing an example of an evaluation target pipeline. [Figure 6] Explanation of the cut pipe report [Figure 7] Expense summary sheet diagram [Figure 8] Weighted evaluation diagram [Figure 9] Flowchart showing the procedure of the appropriate pipeline generation process DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, a piping design support device according to the present invention will be described with reference to the drawings. 1 shows a functional block configuration of a piping design support device 10. The piping design support device 10 is composed of a laptop computer equipped with a liquid crystal display type display unit 10A and a touch panel type input unit 10B.

[0024] The control board contained in the main body is provided with a CPU, a memory unit 18, an input / output circuit, a communication interface circuit, etc., and the function of the piping design support device 10 is realized by executing an application program stored in the memory unit 18 by the CPU.

[0025] That is, the piping design support device 10 includes a pipe layout drawing generating unit 11, a storage unit 18, a communication processing unit 19, a display processing unit 20, an input processing unit 21, an output processing unit 22, etc. The communication processing unit 19 is connected to a drawing management server 23 via the Internet, and has an interface function for acquiring piping information such as existing pipe layout drawings, maps, pipe parts, etc., required for piping design from a database managed by the drawing management server 23, and storing newly designed piping information. The display processing unit 20 performs control for displaying required information via the display unit 10A, the input processing unit 21 performs control for processing information operated via the input unit 10B, and the output processing unit 22 outputs pipe layout drawings, etc. to an output unit 10C such as a printer.

[0026] The pipe layout drawing generation unit 11 is a functional block that automatically generates a pipe layout drawing (see Figure 2(b)) of a pipeline (the pipeline is called a planned line) that connects multiple intersections IP (IP1, IP2, IP3, IP4 in Figure 2(a)) that are specified via the input unit 10B from a start point to an end point on a road on a map displayed on the display unit 10A, and passes through selectively specified passing instruction points CP (CP in Figure 2(a)) between each intersection IP.

[0027] As shown in Fig. 3, the base pipeline generating unit 12 provided in the pipe layout diagram generating unit 11 displays a road map on a map layer in accordance with an operator's operation (SA1), and sets intersections IP and necessary passing indicator points CP on the pipeline diagram layer that is superimposed on the map layer (SA2). The passing indicator points CP are specified when laying a cable so as to draw a gentle curve along the road.

[0028] The special-shaped pipes to be placed at each intersection IP are selected from the database provided in the drawing management server 23 and placed (SA3), and the number of straight pipes to be placed between each intersection IP and Cut tube The length of each pipe is calculated and arranged (SA4). The number of straight pipes is calculated by dividing the length between adjacent intersections IP by the length of one straight pipe, and the remainder is used to calculate the length of the cut pipes. A pipe division diagram is generated by bending and arranging the straight pipes within a predetermined allowable angle range so that they pass through the passing instruction point CP (SA5). In this way, the attributes and installation position (coordinates) of each pipe to be laid along the planned line are listed, and stored in the memory unit 18 together with the pipe division diagram (SA6).

[0029] Although not described in detail, in order to allow the operator to easily operate the display unit 10A, operation commands such as specifying an intersection IP, specifying a passing instruction point CP, and arranging pipes are displayed in a selectable manner. When the operator touches a corresponding display area, the display unit 10A switches to a specification mode of an intersection IP or a passing instruction point CP, and when the operator touches a predetermined position on the road map, the display unit 10A switches to a specification mode of an intersection IP or a passing instruction point CP. Location In addition, when placing a special-shaped pipe at an intersection point IP, a selection of special-shaped pipes is displayed, and the operator can specify the special-shaped pipe to be placed by touching the corresponding display area. The operation interface is constructed so that the pipe division drawing that becomes the base pipeline is automatically generated by the operator selecting an operation command displayed on the display unit 10A.

[0030] FIG. 4 shows an example of a portion of the base pipeline thus generated. In this example, three intersections IPn, IPn+1, and IPn+2 are set in sequence from the base end, and a curved pipe or a joint ring, which is an irregular pipe, is placed at each intersection. The direction of the joints is determined in the construction order, and the irregular pipes are connected to each other. Between A straight pipe is placed to connect the two, and if a cut pipe is required, it is placed just before the special shaped pipe. In Figure 4, the cut pipe is shown in bold. In Figure 4, the white arrow indicates the direction of the joint, with the base end being the insertion port and the tip end being the socket. Note that there are also cases where the base end is the socket and the tip end is the insertion port.

[0031] As shown in Fig. 1, the pipe layout diagram generating unit 11 further includes functional blocks such as a change target extracting unit 13, an evaluation target pipe generating unit 14, an evaluation value calculating unit 15, an appropriate pipe generating unit 16, and a drawing output unit 17, in order to provide design support for generating an appropriate pipe by optimizing the connection mode of any of the pipes that constitute the base pipe so as to satisfy predetermined design conditions for the base pipe generated by the base pipe generating unit 12. The processing executed by each functional block will be described in detail below.

[0032] The change target extraction unit 13 extracts pipes whose connection manner can be changed and intersections associated with the pipes from among the pipes that constitute the base pipeline. A pipe whose connection manner can be changed refers to a pipe whose joint's receiving-insertion manner can be changed, more specifically, a special-shaped pipe whose receiving-insertion, inserting-receiving, and receiving-receiving manner can be changed. Specifically, for example, a 45° bent pipe, a 22.5° bent pipe, and a gate valve are applicable to the pipes whose connection manner can be changed. Among these pipes, pipes whose front and rear cut pipes can be changed and their intersections are extracted. A "pipe whose front and rear cut pipes can be changed" refers to a pipe that can be connected even if it is changed to either a first cut pipe or a second cut pipe. The change target extraction unit 13 extracts all of the 45° bent pipes, 22.5° bent pipes, and gate valves included in the base pipeline and the intersections associated with the pipes. In the base pipeline shown in FIG. 4, the pipes whose connection manner can be changed are only the 45° bent pipes located at the intersections IPn, IPn+1, and IPn+2.

[0033] The evaluation target pipeline generating unit 14 generates a plurality of piping patterns having different connection modes for each intersection extracted by the change target extracting unit 13, and generates a plurality of evaluation target pipelines corresponding to the base pipelines by combining the respective piping patterns. If the special pipe has both "insertion" and "double insertion", if "insertion" is used, the insertion port On the side incisor canal was adopted If there is a choice between a pipe other than the O-cut pipe or a O-cut pipe on the receiving side, and a "double receiving" is adopted, both receiving ports are O-cut pipes. of There is a choice to connect one end to the other or to a cut-off pipe on the other side. This is shown in Figure 5.

[0034] Figure 5(a) shows a pattern in which the O-cut pipe OP is arranged upstream in the construction direction for both receiving pipes C, Figure 5(b) shows a pattern in which the inlet of the A-cut pipe KP is arranged upstream in the construction direction for the receiving-inserted pipe C, Figure 5(c) shows a pattern in which the O-cut pipe OP is arranged upstream and downstream in the construction direction for both receiving pipes C, Figure 5(d) shows a pattern in which the inlet of the A-cut pipe KP is arranged upstream in the construction direction for the receiving-inserted pipe C and the O-cut pipe OP is arranged downstream, and Figure 5(e) shows a pattern in which the O-cut pipe OP is arranged upstream in the construction direction for the receiving-inserted pipe C and the inlet of the A-cut pipe KP is arranged downstream. In the figures, the symbol SP indicates a straight pipe, and the thick line indicates a cut pipe.

[0035] In this example, the patterns shown in Figures 5(a) and 5(b) are mutually convertible and any of them can be adopted, and the patterns shown in Figures 5(c), 5(d), and 5(e) are mutually convertible and any of them can be adopted. Fig. 5(f) shows a base pipeline corresponding to Fig. 4. In this example, only three intersections IPn, IPn+1, and IPn+2 are extracted by the change target extraction unit 13. The evaluation target pipeline generation unit 14 generates a plurality of evaluation target pipelines by combining adoptable piping patterns for the intersections IPn, IPn+1, and IPn+2.

[0036] At intersection IPn, the pattern in Fig. 5(a) is used, so it can be exchanged with the pattern in Fig. 5(b). At intersection IPn+1, the pattern in Fig. 5(b) is used, so it can be exchanged with the pattern in Fig. 5(a). At intersection IPn+2, the pattern in Fig. 5(c) is used, so it can be exchanged with the pattern in Fig. 5(d) or Fig. 5(e). In other words, 2 x 2 x 3 = 12 piping patterns of pipelines are generated as pipelines to be evaluated.

[0037] The evaluation value calculation unit 15 calculates an evaluation value corresponding to a predetermined design condition for each evaluation target pipeline generated by the evaluation target pipeline generation unit 14. In this embodiment, the predetermined condition is selectable between design conditions that prioritize the environment so as to reduce the amount of remaining cut pipes when laying the pipeline, and design conditions that prioritize economy so as to minimize the costs required for pipeline construction, such as the material costs of the pipeline, or the material costs and installation costs. In other words, the evaluation value calculation unit 15 also functions as a design condition selection unit.

[0038] The design conditions are determined by the designer selecting from the design condition selection display field on the display screen. When design conditions that prioritize the environment are selected, the evaluation value calculation unit 15 generates a pipe cut report for each of the pipelines to be evaluated (12 pipelines to be evaluated in the above example). When design conditions that prioritize economy are selected, the evaluation value calculation unit 15 generates a cost list for each of the pipelines to be evaluated (12 pipelines to be evaluated in the above example).

[0039] FIG. 6 shows an example of a cut pipe report. The evaluation value calculation unit 15 calculates the length and number of cut pipes required in the entire evaluation target pipeline, that is, cut pipes A and B, for straight pipes of each nominal diameter, in this embodiment, for straight pipes with nominal diameters of 200 mm and 250 mm and length of 5000 mm, in order to consider cut pipes occurring in the entire evaluation target pipeline, rather than cut pipes limited to the connection mode of the intersection extracted by the change target extraction unit 13 in the evaluation target pipeline. In order to reduce the number of remaining pipes, the number of cut pipes required is calculated taking into account the use of spigot rings, P-Links, G-Links, etc. for pipe connections. As a result, the length and number of remaining pipes are calculated, and a cut pipe report is generated that shows the original pipe type, pipe type, effective length, remaining pipe length, and number of cut pipes. The total value of the remaining pipe length for each nominal diameter is calculated as the evaluation value.

[0040] An example of a cost list is shown in Fig. 7. In the cost list, the cost is calculated by focusing on the connection state of the intersection extracted by the change target extraction unit 13 in the pipeline to be evaluated. For example, in the pattern of Fig. 5(a), double bent pipes, a cut pipe (with a convex part), and a G-Link are required as material costs, and the costs required for the joint work of the G-Link, the joint work other than the G-Link, and the cutting work are recorded as installation costs, and the total cost is calculated as the evaluation value.

[0041] In addition, for the pattern in Figure 5(a), costs are calculated for both the use of an outlet ring and the use of a P-Link. When an outlet ring is used, the material costs include a curved pipe, a cut pipe, a liner, and an outlet ring, while the installation costs include two joining processes, cutting and groove cutting, and the costs required for installing the outlet ring, and the total cost is calculated. When a P-Link is used, the material costs include a curved pipe, a cut pipe, a liner, and a P-Link, while the installation costs include two joining processes, and the costs required for P-Link joining and cutting, and the total cost is calculated as the evaluation value.

[0042] When design conditions that prioritize the environment are selected, the appropriate pipeline generation unit 16 generates the evaluation pipeline with the highest evaluation value, that is, the evaluation pipeline with the shortest remaining pipe length, as the appropriate pipeline based on the evaluation value of each evaluation pipeline calculated by the evaluation value calculation unit 15. In this case, the remaining pipe length is evaluated as the total value of the remaining pipe length for each nominal diameter. Note that, when there are remaining pipes with different nominal diameters, the evaluation value may be calculated by multiplying each remaining pipe length by a correction coefficient according to the nominal diameter and adding them together. For example, the correction coefficient for a nominal diameter with a high evaluation weight may be made larger than the correction coefficient for a nominal diameter with a low evaluation weight.

[0043] In addition, when design conditions that prioritize economy are selected, the appropriate pipeline generation unit 16 generates the evaluation target pipeline with the highest evaluation value, i.e., the evaluation target pipeline that will be the least expensive, as the appropriate pipeline based on the evaluation value of each evaluation target pipeline calculated by the evaluation value calculation unit 15.

[0044] The drawing output unit 17 outputs the appropriate pipeline generated by the appropriate pipeline generation unit 16 as a pipeline design drawing to the output unit 10C, or outputs it to the drawing management server 23 via the communication processing unit 19.

[0045] In the above explanation, the evaluation value calculated by the evaluation value calculation unit 15 is a value according to a predetermined design condition, and if the design conditions are different, the evaluation value will also be different. Even if a high evaluation value is obtained for an evaluation target pipeline under specific design conditions, it is difficult to perform a balanced evaluation unless it is possible to relatively evaluate the value under other design conditions.

[0046] In preparation for such a case, it is preferable that the evaluation value calculation section 15 is configured to calculate a normalized value for each design condition as the evaluation value so that relative evaluation can be made between different design conditions.

[0047] For example, for design conditions that prioritize environmental friendliness, it is preferable to statistically process past design and construction examples, calculate the average remaining pipe length per pipe length of the base pipeline as a reference value, and evaluate the remaining pipe length per pipe length of each evaluated pipeline divided by the reference value as a normalized value. An evaluation value of 1 is equivalent to the past average, and an evaluation value less than 1 can be evaluated as being shorter than the past average and superior to the environment.

[0048] For example, for design conditions that prioritize economy, it is preferable to statistically process past design and construction examples, calculate the average cost per special-shaped pipe whose piping pattern can be changed as a reference value, and evaluate the average cost per special-shaped pipe whose piping pattern can be changed included in each evaluated pipeline divided by the reference value as a normalized value. An evaluation value of 1 is equivalent to the past average, and an evaluation value less than 1 can be evaluated as being cheaper and more economical than the past average.

[0049] In this case, the evaluation value calculation unit 15 needs to calculate evaluation values ​​for both design conditions that prioritize environmental friendliness and design conditions that prioritize economic efficiency, and it becomes possible to objectively judge which design condition is relatively superior. Figures 8(a) and (b) show the remaining pipe length, which is the evaluation value for environmental friendliness for a combination of piping patterns, and its normalized evaluation value, and the cost, which is the evaluation value for economic efficiency, and its normalized evaluation value. The smaller the normalized evaluation value, the higher the evaluation, and it becomes possible to objectively evaluate both environmental friendliness and economic efficiency.

[0050] Furthermore, the evaluation value calculation unit 15 may be configured to calculate an evaluation value by weighting and adding normalized values ​​for each design condition using a predetermined weighting coefficient, so that different design conditions can be combined for evaluation.

[0051] For example, for a plurality of pipelines to be evaluated, an evaluation value V1 under design conditions that prioritize environmental friendliness and an evaluation value V2 under design conditions that prioritize economic efficiency are obtained, and the comprehensive evaluation value V can be calculated as V = W1 × V1 + W2 × V2. If W1 = W2, an evaluation that equally considers environmental friendliness and economic efficiency can be made. If W1 > W2, an evaluation that emphasizes environmental friendliness can be made. If W1 < W2, an evaluation that emphasizes economic efficiency can be made. The values of the weighting factors W1 and W2 are not particularly limited and may be set in advance considering various conditions such as the construction target area and the construction budget. By evaluating in this way, among the plurality of pipelines to be evaluated, a well-balanced pipeline with high evaluations in both environmental friendliness and economic efficiency can be generated as an appropriate pipeline.

[0052] Figure 9 shows the procedure for generating an appropriate pipeline by a weighting operation in the pipe layout diagram generation unit 11. When a base pipeline is generated by the base pipeline generation unit 12 (SB1), a change target is extracted from the base pipeline by the change target extraction unit 13 (SB2). By the evaluation target pipeline generation unit 14, a plurality of piping patterns with different connection modes are generated for the change target, and a plurality of evaluation target pipelines combined therefrom are generated (SB3).

[0053] In the evaluation value calculation unit 15, first, design conditions that prioritize environmental friendliness are selected, the evaluation values of each evaluation target pipeline are calculated and normalized (SB4). Next, design conditions that prioritize economic efficiency are selected, and the evaluation values of each evaluation target pipeline are calculated and normalized (SB5).

[0054] By the appropriate pipeline generation unit 16, for each evaluation target pipeline, a comprehensive evaluation value obtained by weighting the evaluation value that prioritizes environmental friendliness and the evaluation value that prioritizes economic efficiency using the weighting factors W1 and W2 is calculated (SB6). An evaluation target pipeline with an excellent comprehensive evaluation value is generated as an appropriate pipeline (SB7), and the appropriate pipeline is output to the drawing management server 23 etc. by the drawing output unit 17 (SB8).

[0055] In the above explanation, the design conditions selectable by the design condition selection unit are a choice between conditions prioritizing environmental friendliness and conditions prioritizing economic efficiency. However, the selectable design conditions are not limited to these, and the system may be configured to allow other design conditions to be selected.

[0056] For example, the system may be configured to allow the selection of design conditions that prioritize ease of construction, design conditions that result in the shortest construction period, design conditions that minimize the impact on surrounding residents, and design conditions that result in the shortest water outage time.

[0057] Design conditions that prioritize constructability and minimize the construction period can be achieved by adding design parameters such as excavation depth, joints, and number of cut pipes to the pipe layout design. A shallow excavation depth, fewer joints, and fewer cut pipes will improve constructability and shorten the construction period.

[0058] As a design condition that minimizes the impact on surrounding residents, a method can be adopted that generates base pipelines by placing joint rings at corresponding intersections so that work can be flexibly carried out by postponing or advancing around important public facilities such as schools and hospitals. As a design condition that minimizes the duration of water outages, a method can be adopted that generates pipe layout diagrams that allow work to be done so that the time of water outage does not overlap with the operating hours of surrounding facilities, and adds bypass pipelines.

[0059] By evaluating these multiple design conditions in a combined manner, it becomes possible to generate an appropriate pipeline that meets the purpose.

[0060] In other words, the pipeline design support method of the invention is a pipeline design support method that uses a computer to generate an appropriate pipeline by optimizing the connection mode of any of the pipes that make up the base pipeline, which includes special-shaped pipes arranged at multiple intersections from a start point to an end point specified on a map, and straight pipes and necessary cut pipes that connect each of the special-shaped pipes, so as to satisfy specified design conditions.

[0061] The pipeline design support method is configured to be executed by a computer: a change target extraction process that extracts pipes whose connection mode can be changed and intersections associated with the pipes from among the pipes that make up the base pipeline; an evaluation target pipeline generation process that generates a plurality of piping patterns having different connection modes for each intersection extracted by the change target extraction process and combines each piping pattern to generate a plurality of evaluation target pipelines that correspond to the base pipeline; an evaluation value calculation process that calculates an evaluation value corresponding to predetermined design conditions for each evaluation target pipeline generated in the evaluation target pipeline generation process; an appropriate pipeline generation process that generates one of the evaluation target pipelines as an appropriate pipeline based on the evaluation value calculated in the evaluation value calculation process; and a drawing output process that outputs the appropriate pipeline generated by the appropriate pipeline generation process as a pipeline design drawing.

[0062] The piping design support device 10 may be configured as a desktop computer other than a laptop computer, or may be configured as a mobile device such as a smartphone or tablet computer. When configured as a smartphone or tablet computer, the piping design support application program may be installed on a cloud computer such as the drawing management server 23, and the smartphone or tablet computer may be equipped with an API (Application Programming Interface) that works with the cloud computer.

[0063] The above-described embodiment shows one aspect of the present invention, and the technical scope of the present invention is not limited based on the description. It goes without saying that the present invention can be appropriately modified and designed within the scope in which the effects of the present invention are achieved. [Explanation of symbols]

[0064] 10: Piping design support device 10A: Display section 10B: Input section 10C: Output section 11: Pipe division diagram creation device 12: Base pipe generation section 13: Change target extraction section 14: Evaluation target pipeline generation unit 15: Evaluation value calculation section (design condition selection section) 16: Optimal Pipe Generation Section 17: Drawing output section 19: Communication processing unit 20: Display processing section 21: Input processing section 22: Output processing section 23: Drawing management server

Claims

1. A pipeline design support device that generates an appropriate pipeline by optimizing the connection mode of the receiving-insertion of the joints of any of the special shaped pipes that constitute a base pipeline including special shaped pipes arranged at a plurality of intersections from a start point to an end point specified on a map, and straight pipes and necessary cut pipes that connect each of the special shaped pipes, so as to satisfy a predetermined design condition, A change target extraction unit that extracts, among the pipes constituting the base pipeline, a special-shaped pipe whose connection mode can be changed to any one of reception-insertion, insertion-reception, or reception-reception and the intersection associated with the special-shaped pipe; an evaluation target pipeline generation unit that generates a plurality of piping patterns using deformed pipes with different connection modes for each of the intersections extracted by the change target extraction unit, and generates a plurality of evaluation target pipelines corresponding to the base pipeline by combining the respective piping patterns; an evaluation value calculation unit that calculates an evaluation value corresponding to the predetermined design conditions for each of the evaluation target pipelines generated by the evaluation target pipeline generation unit; an appropriate pipeline generating unit that generates one of the evaluation target pipelines as the appropriate pipeline based on the evaluation value calculated by the evaluation value calculating unit; a drawing output unit that outputs the appropriate pipeline generated by the appropriate pipeline generation unit as a pipeline design drawing; A pipeline design support device including:

2. 2. The pipeline design support device according to claim 1, wherein the evaluation value calculation unit calculates, as the evaluation value, a value normalized for each of the design conditions so that a relative evaluation can be made between different design conditions.

3. The pipeline design support device according to claim 2, wherein the evaluation value calculation unit calculates as the evaluation value a value obtained by weighting and adding normalized values ​​for each of the design conditions with a predetermined weighting coefficient so that different design conditions can be evaluated in a fusion manner.

4. 2. The pipeline design support device according to claim 1, further comprising a design condition selection unit that selects the predetermined design condition from a plurality of preset design conditions, and calculates an evaluation value corresponding to the design condition selected by the design condition selection unit.

5. 5. The pipeline design support device according to claim 1, wherein the predetermined design conditions include an environmental priority condition for minimizing the length of remaining pipes caused by cutting pipes required for connecting pipes.

6. 6. The pipeline design support device according to claim 1, wherein the predetermined design conditions include an economical condition that minimizes costs required for pipeline construction.

7. A pipeline design support method for generating an appropriate pipeline by using a computer, the appropriate pipeline being generated for a base pipeline including special pipes arranged at a plurality of intersections from a start point to an end point specified on a map, and straight pipes and necessary cut pipes connecting the special pipes, by optimizing the connection mode of receiving and inserting the joints of any of the special pipes constituting the base pipeline so as to satisfy a predetermined design condition, the method comprising: A change target extraction process for extracting, among the pipes constituting the base pipeline, special pipes whose connection manner can be changed to any one of reception-insertion, insertion-reception, and reception-reception, and the intersections associated with the special pipes; an evaluation target pipeline generation process for generating a plurality of piping patterns using deformed pipes with different connection modes for each of the intersections extracted by the change target extraction process, and combining the piping patterns to generate a plurality of evaluation target pipelines corresponding to the base pipeline; an evaluation value calculation process for calculating an evaluation value corresponding to the predetermined design conditions for each of the evaluation target pipelines generated in the evaluation target pipeline generation process; an appropriate pipeline generation process for generating one of the evaluation target pipelines as the appropriate pipeline based on the evaluation value calculated in the evaluation value calculation process; a drawing output process for outputting the appropriate pipeline generated by the appropriate pipeline generation process as a pipeline design drawing; The pipeline design support method is executed by the computer.

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