Method, program and design support device for supporting rebar arrangement design

Abstract

Provided is a reinforcement design support method, program, and design support device that can easily place reinforcing bars in a 3D model and significantly reduce the workload associated with design changes. [Solution] One of a plurality of planar figures constituting the outer surface of a three-dimensional object is selected by a user as a reference figure, and information (reference rebar line information) for defining a reference rebar line located on the plane of the reference figure is input by the user (ST110). The reference rebar line information is information that determines the start end, end end, and straight portion of the reference rebar line based on a first reference plane that is parallel to a planar figure that is tangent to the reference figure on the outer surface of the three-dimensional object. A plurality of rebar lines based on the reference rebar line are located on a plurality of second reference planes that are parallel to the reference figure. The start end, end end, and straight portion of the rebar line located on each second reference plane are determined based on the reference rebar line information (information of the first reference plane) that determines the start end, end end, and straight portion of the reference rebar line. A three-dimensional model of the rebar is generated based on the rebar line.

Description

[Technical field]

[0001] The present invention relates to a method, a program, and a design support device for supporting the design of reinforcing bar arrangement using a computer. [Background technology]

[0002] As a method for supporting the design of the arrangement of reinforcing bars (reinforcement) in reinforced concrete structures using a computer, for example, the method described in the following patent document is known. This reinforcement design support method includes a reinforcement pattern input step of inputting the reinforcement pattern of the beam-column joint into a computer, a basic data input step of inputting data including the cover thickness into a computer, a dimensional data input step of inputting data including the sizes of the beams, columns, beam reinforcement, and column reinforcement into a computer, and a reinforcement drawing creation step of creating a reinforcement drawing by a computer based on the reinforcement pattern, basic data, and dimensional data input in the above steps. In the reinforcement pattern input step, the approximate reinforcement position is selected on a grid-like pattern screen prepared in advance. This makes it easy to input the reinforcement pattern on the screen. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 05-61946 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, 3D models have come to be used in the design of buildings and other structures. If a 3D model of rebar is used in the design of reinforcement bars, the fit of the rebars in the structure and their interference can be visually grasped, making it easier to check the design and the finished state. However, since a large number of rebars are handled in the design of reinforcement bars, it is very time-consuming to manually create 3D models of each rebar. In addition, in the design of reinforcement bars, design changes are likely to occur to avoid problems such as interference, and it may be necessary to revise the layout of the rebars overall, which creates the problem of a large burden of work to revise the 3D models when making design changes.

[0005] The present invention has been made in consideration of the above circumstances, and its purpose is to provide a reinforcement design support method, program, and design support device that can easily place reinforcing bars in a 3D model and significantly reduce the workload due to design changes. [Means for solving the problem]

[0006] The first aspect of the present invention is a method performed by a design support device that supports the design of rebar placement, in which one plane figure arbitrarily selected from a plurality of plane figures constituting the outer surface of a virtual three-dimensional object is called a reference figure, a plane parallel to the plane figure that is in contact with the reference figure is called a first reference plane, a plane parallel to the reference figure is called a second reference plane, a virtual line representing a rebar and including one or more straight line portions is called a rebar line, one end of the two ends of the rebar line is called a start end and the other end is called an end end, and the i-th end from the start end side of the rebar line is called a second reference plane. (i is an integer of 1 or more) is referred to as the i-th straight line section, one or more straight line sections are each included in a different first reference plane, a reinforcing bar line located on the plane of the reference figure is referred to as a reference reinforcing bar line, information regarding the first reference plane that includes one straight line section of the reference reinforcing bar line is referred to as straight line section information of that one straight line section, information regarding the first reference plane that is tangent to the starting end of the reference reinforcing bar line is referred to as starting end information, information regarding the first reference plane that is tangent to the end end of the reference reinforcing bar line is referred to as end end information, and The method includes a first step of acquiring plane figure information, a second step of drawing one or more plane figures based on the acquired plane figure information, a third step of selecting one of the drawn plane figures as a reference figure in accordance with an input instruction, and acquiring start end information, straight section information of each straight section, and end information of a reference rebar line located on the plane of the selected reference figure, a fourth step of drawing the reference rebar line based on the acquired start end information, straight section information of each straight section, and end information, and a fourth step of drawing a plurality of parallel lines to the selected reference figure in accordance with an input instruction. The method includes a fifth step of acquiring second reference plane information relating to a second reference plane, a sixth step of determining reinforcing bar lines located on each of a plurality of second reference planes indicated by the acquired second reference plane information, the reinforcing bar lines having a starting end in contact with the first reference plane indicated by the acquired starting end information, the i-th straight section being included in the first reference plane indicated by the acquired straight section information of the i-th straight section, and the ending end of the reinforcing bar lines being in contact with the first reference plane indicated by the acquired ending end information, and a seventh step of generating a three-dimensional model of the reinforcing bar based on the reinforcing bar lines determined in the sixth step.

[0007] A second aspect of the present invention is a program including instructions to be executed by a design support device that supports the design of rebar placement, and the processing performed by the design support device in accordance with the instructions includes each step of the method of the first aspect.

[0008] A third aspect of the present invention is a design support device for supporting the design of rebar placement, comprising a processing unit and a memory unit storing instructions to be executed by the processing unit, and the processing performed by the processing unit in accordance with the instructions includes each step of the method of the first aspect above.

[0009] A fourth aspect of the present invention is a design support device for supporting the design of reinforcing bar arrangement, comprising means for performing each step of the method of the first aspect. Effect of the Invention

[0010] According to the present invention, it is possible to provide a reinforcement bar arrangement design support method, program, and design support device that can easily arrange reinforcing bars in a 3D model and significantly reduce the workload due to design changes. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of a design support apparatus according to this embodiment. [Diagram 2] 2A to 2D are diagrams for explaining the terms used in this embodiment. [Diagram 3] FIG. 3 is a flowchart for explaining an example of a reinforcement design support method according to this embodiment. [Figure 4] Fig. 4A is a diagram showing an example of a planar figure constituting the outer surface of a three-dimensional object, and Fig. 4B is a diagram showing an example of a group of reinforcing bars arranged inside the three-dimensional object. [Diagram 5] Fig. 5A is a diagram showing an example of a group of reinforcing bars arranged within a three-dimensional object, and Fig. 5B is a diagram showing an example of a three-dimensional model of reinforcing bars. [Figure 6] FIG. 6 is a flowchart for explaining an example of a process for inputting information about a reference reinforcing bar line. [Figure 7] 7A to 7H are diagrams illustrating an example of a method for inputting information about a reference rebar line. [Figure 8] Fig. 8A is a diagram showing an example of a two-dimensional drawing generated based on the designed reinforcement arrangement, and Fig. 8B is a diagram showing an example of a quantity table of reinforcing bars generated based on the designed reinforcement arrangement. [Figure 9] FIG. 9 is a flowchart for explaining an example of a process for connecting reinforcing bars of two reinforcing bar groups. [Figure 10] Fig. 10A is a diagram showing an example of a group of reinforcing bars as viewed from the reference figure side, Fig. 10B is a diagram showing an example of a group of reinforcing bars arranged inside a three-dimensional object, and Fig. 10C is an enlarged view of a connection portion of reinforcing bars in a three-dimensional model. [Figure 11] FIG. 11 is a flowchart for explaining an example of a process for bringing reinforcing bars of two reinforcing bar groups into contact with each other. [Figure 12] Figures 12A and 12B are diagrams showing an example of a group of reinforcing bars. Figure 12C is a diagram showing an example of a group of reinforcing bars arranged within a three-dimensional object. Figures 12D and 12E are enlarged views of contact portions of reinforcing bars in a three-dimensional model. [Figure 13] FIG. 13 is a flowchart for explaining an example of a process for suspending a group of reinforcing bars between two reinforcing bars. [Figure 14] Figures 14A and 14B are diagrams showing an example of a reinforcing steel wire, and Figures 14C to 14E are diagrams showing an example of a reinforcing steel bar of a three-dimensional model. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Fig. 1 is a diagram showing an example of the configuration of a design support device 1 according to this embodiment. In Fig. 1, the design support device 1 performs processing to support the design of the arrangement of reinforcing bars (reinforcement bar arrangement) in a reinforced concrete structure or the like, in response to an instruction from a user (designer). In the example of Fig. 1, the design support device 1 has a communication unit 11, an input unit 12, a display unit 13, a storage unit 14, and a processing unit 15.

[0013] The communication unit 11 communicates with other devices (such as a server that provides design information) via a communication network such as the Internet. The communication unit 11 includes a device (such as a network interface card) that communicates in accordance with a predetermined communication standard such as Ethernet (registered trademark) or wireless LAN.

[0014] The input unit 12 inputs instructions according to user operations and other information to the processing unit 15. For example, the input unit 12 includes at least one device having an input function such as a touch panel, a touch pad, a keyboard, a mouse, a button, a switch, a microphone, a camera, or the like.

[0015] The display unit 13 is a device that displays an image corresponding to the video signal generated in the processing unit 15, and includes display devices such as a liquid crystal display, an organic EL display, and a projector.

[0016] The storage unit 14 stores one or more programs 141 including instructions executable by the processing unit 15, data temporarily stored during processing by the processing unit 15, data used in processing by the processing unit 15, data obtained as a result of processing by the processing unit 15, and the like. The storage unit 14 may include, for example, a main storage device (RAM, ROM, etc.) and an auxiliary storage device (flash memory, SSD, hard disk, memory card, optical disk, etc.). The storage unit 14 may be composed of one storage device or may be composed of multiple storage devices. When the storage unit 14 is composed of multiple storage devices, each storage device may be connected to the processing unit 15 via a computer bus or any other communication means.

[0017] The processing unit 15 centrally controls the overall operation of the design support device 1 and executes predetermined information processing. The processing unit 15 includes, for example, one or more processors (such as a central processing unit (CPU), a micro-processing unit (MPU), a digital signal processor (DSP), a graphics processing unit (GPU), and a neural network processing unit (NPU)) that execute processing in accordance with instructions of one or more programs 141 stored in the storage unit 14. The processing unit 15 operates as one or more computers by the one or more processors executing instructions of one or more programs 141 stored in the storage unit 14. The design support device 1 may have multiple computers, and at least a part of the processing according to this embodiment may be executed by the multiple computers in cooperation with each other.

[0018] The processing unit 15 may include one or more dedicated hardware (such as an application specific integrated circuit (ASIC) or a field-programmable gate array (FPGA)) configured to realize a specific function. The processing unit 15 may execute all of the processes described in this embodiment in one or more computers, may execute a part of the processes in one or more computers and dedicated hardware, or may execute all of the processes in dedicated hardware.

[0019] The program 141 may be recorded, for example, in a computer-readable recording medium (optical disk, memory card, USB memory, or other non-transitory tangible medium). The processing unit 15 may read at least a part of the one or more programs 141 recorded in such a recording medium using a recording medium reading device (optical disk device, etc.) or an interface device (USB interface, etc.) not shown, and write the program in the storage unit 14. Alternatively, the processing unit 15 may download at least a part of the one or more programs 141 from another device connected to the communication network using the communication unit 11, and write the program in the storage unit 14. The one or more programs 141 may include an instruction to cause the processing unit 15 to execute at least a part of the processing according to this embodiment described later.

[0020] Here, in order to facilitate understanding of this embodiment, some of the terms used in this embodiment will be explained with reference to FIGS. 2A to 2D.

[0021] FIG. 2A is a diagram showing an example of a three-dimensional object. In this embodiment, a virtual three-dimensional object is provided as a reference for designing the three-dimensional arrangement of reinforcing bars. The three-dimensional object represents, for example, the outer shape of a reinforced concrete structure (such as a skeleton) in which reinforcing bars are arranged. The outer surface of the three-dimensional object is composed of a plurality of planar figures. The outer surface of the three-dimensional object 2 shown in the example of FIG. 2A is composed of eight planar figures F1 to F8.

[0022] FIG. 2B is a diagram for explaining the reference figure and the first reference plane. The "reference figure" is one plane figure arbitrarily selected from the multiple plane figures constituting the outer surface of the above-mentioned three-dimensional object. In this embodiment, the reference figure is selected first in designing the reinforcement. In the example of FIG. 2B, the plane figure F7 of the three-dimensional object 2 shown in FIG. 2A is selected as the reference figure. The "first reference plane" is a plane parallel to a plane figure that is in contact with the reference figure on the outer surface of a three-dimensional object. In the example of Fig. 2B, six first reference planes (PA1 to PA6) that are parallel to six plane figures (F1 to F6) that are in contact with the reference figure (plane figure F7) are shown by dotted lines.

[0023] FIG. 2C is a diagram for explaining the second reference plane. The "second reference plane" is a plane parallel to the reference figure. In the example of Fig. 2C, a plurality of second reference planes PB parallel to the reference figure (plane figure F7) are indicated by dotted lines.

[0024] A "reinforcing bar line" is an imaginary line that represents a reinforcing bar and includes one or more straight sections. The "starting point" and the "ending point" are the two ends of a reinforcing bar line. Which of the two ends is designated the "starting point" and which is designated the "ending point" is chosen arbitrarily. The "ith straight section" (i is an integer of 1 or greater) is the straight section that is the i-th straight section counted from the starting end of the reinforcing bar wire among one or more straight sections.

[0025] FIG. 2D is a diagram for explaining the reference reinforcing bar line. A "reference rebar line" is a rebar line that has one or more straight line portions each included in a different first reference plane and is located on the plane of a reference figure. The reference rebar line 3 shown in the example of FIG. 2D is located on the plane of the reference figure (plane figure F7) and has two straight line portions (31-1, 31-2) between the starting point 30 and the ending point 32. The first straight line portion 31-1 is included in the first reference plane PA2, and the second straight line portion 31-2 is included in the first reference plane PA3.

[0026] The "0th side" is one side arbitrarily selected from the multiple sides constituting the reference figure. The i-th side is adjacent to the (i-1)th side. For example, the 0th side is adjacent to the 1st side, the 1st side is adjacent to the 2nd side, and the 2nd side is adjacent to the 3rd side. In the example of FIG. 2D, of the six sides in the reference figure (plane figure F7), the side tangent to the plane figure F1 is selected as the 0th side. In this example, the 1st to 5th sides are respectively tangent to the plane figures F2 to F6.

[0027] The "straight line section information" is information about the first reference plane including one straight line section of the reference rebar line. In the example of Fig. 2D, the straight line section information of the first straight line section 31-1 is information about the first reference plane PA2, and the straight line section information of the second straight line section 31-2 is information about the first reference plane PA3. The "starting end information" is information about the first reference plane that is in contact with the starting end of the reference rebar line. In the example of Fig. 2D, the starting end information of the starting end 30 is information about the first reference plane PA1. "End information" is information about the first reference plane that is in contact with the end of the reference rebar line. In the example of Fig. 2D, the end information of the end 32 is information about the first reference plane PA4. "Reference rebar line information" is information that defines one reference rebar line, and includes start end information, straight line section information of each straight line section, and end end information for that one reference rebar line.

[0028] In this embodiment, reinforcing bar lines are determined on each of multiple second reference planes set by user instructions (second reference plane information described later) based on reference reinforcing bar lines defined by reference reinforcing bar line information acquired in accordance with user instructions, and a three-dimensional model of the reinforcing bar is generated based on the determined reinforcing bar lines. The "group of reinforcing bar lines" refers to a plurality of reinforcing bar lines determined for a plurality of second reference planes indicated by second reference plane information, which will be described later. A "rebar group" is a group of rebars represented by a group of rebar wires.

[0029] Next, the method for supporting reinforcement design according to this embodiment will be described with reference to the flowchart of FIG. Step ST100 is an example of the first step of the present invention. Step ST105 is an example of the second step of the present invention. Step ST110 is an example of the third step of the present invention. Step ST115 is an example of the fourth step of the present invention. Step ST120 is an example of the fifth step of the present invention. Step ST125 is an example of the sixth step of the present invention. Step ST135 is an example of the seventh step of the present invention.

[0030] ST100: The design support device 1 acquires information (plane figure information) about a plurality of plane figures constituting the outer surface of a three-dimensional object from a three-dimensional model of the three-dimensional object input by a user. For example, the design support device 1 extracts edges of the three-dimensional object, specifies areas surrounded by the edges as plane figures, and acquires information about each specified plane figure as plane figure information.

[0031] ST105: The design support device 1 draws one or more plane figures of the three-dimensional object based on the plane figure information acquired in step ST100. Fig. 4A shows an example of a three-dimensional object and its plane figure drawn by the design support device 1 based on the plane figure information. In the example of Fig. 4A, some plane figures (F1, F2, F4, F5, F7) of the three-dimensional object 2 are selected by the user and arranged two-dimensionally.

[0032] ST110: In response to instructions input by the user, the design support device 1 selects one of the planar figures drawn in step ST105 as a reference figure, and obtains the starting point information, straight line section information of each straight line section, and end point information for the reference rebar line located on the plane of the selected reference figure.

[0033] For example, the design support device 1 first acquires start end information in response to an instruction input by the user (start end information acquisition process). After acquiring the start end information, the design support device 1 then acquires straight section information in order from the straight section on the start end side to the straight section on the end end side in response to an instruction input by the user (straight section information acquisition process). After acquiring straight section information for all straight sections, the design support device 1 acquires end end information in response to an instruction input by the user (end end information acquisition process).

[0034] The information on the first reference plane acquired by the design support device 1 as the start end information, the straight line portion information, and the end end information includes, for example, information indicating one planar figure tangent to the reference figure, and information indicating the distance (offset) from the one planar figure to the first reference plane parallel to it. The orientation of the first reference plane is specified by the planar figure, and the position of the first reference plane is specified by the distance from the planar figure.

[0035] In addition, there are two planes that are parallel to the planar figure and at the same distance, but if it is assumed that the reinforcing bars are located inside the three-dimensional object, the plane that passes through the inside of the three-dimensional object may be identified as the first reference plane.

[0036] FIG. 6 is a flowchart for explaining an example of the process of step ST110 for inputting information about a reference reinforcing bar line. Steps ST300 to ST310 are an example of a start point information acquisition step of the present invention. Steps ST315 to ST325 are an example of the straight line portion information acquiring step (first straight line portion) of the present invention. Steps ST335, ST340, and ST350 are an example of a straight section information acquisition step (second straight section and thereafter) of the present invention. Steps ST335, ST340, and ST365 are an example of a termination information acquisition step of the present invention. Step ST355 is an example of a straight line portion drawing step of the present invention.

[0037] First, the design support device 1 selects one side of the reference graphic as the 0th side in response to an instruction input by the user (ST300). In response to the instruction input by the user, the design support device 1 acquires the distance from a plane figure corresponding to the 0th side (a plane figure contacting the reference graphic at the 0th side) to a first reference plane parallel to the plane figure (ST305). Then, the design support device 1 acquires starting point information including information indicating the plane figure corresponding to the 0th side selected in step ST300 and information indicating the distance from the plane figure acquired in step ST305 to the first reference plane (ST310).

[0038] Next, the design support device 1 selects a first side adjacent to the 0th side in response to an instruction input by the user (ST315). In response to an instruction input by the user, the design support device 1 acquires a distance from a plane figure corresponding to the first side (a plane figure tangent to the reference figure at the first side) to a first reference plane parallel to the first side (ST320). Then, the design support device 1 acquires straight line section information of the first straight line section including information indicating the plane figure corresponding to the first side selected in step ST315 and information indicating the distance from the plane figure acquired in step ST320 to the first reference plane (ST325).

[0039] After acquiring the straight section information of the first straight section in step ST325, the design support device 1 then sets i=2 (ST330) and proceeds to the processing of step ST335.

[0040] The design support device 1 selects the i-th side adjacent to the previously selected (i-1)-th side in response to an instruction input by the user (ST335). In response to an instruction input by the user, the design support device 1 acquires the distance from a plane figure corresponding to the i-th side (a plane figure that is in contact with the reference figure at the i-th side) to a first reference plane that is parallel thereto (ST340).

[0041] If the first reference plane, the distance from which has been obtained in step ST340 from the planar figure, does not define the end of the reference reinforcing bar line (No in ST345), the design support device 1 obtains straight line section information of the i-th straight line section, which includes information indicating the planar figure corresponding to the first side selected in step ST335 and information indicating the distance from the planar figure obtained in step ST340 to the first reference plane (ST350).

[0042] When straight line section information of the ith straight line section is acquired in step ST350, the design support device 1 draws the (i-1)th straight line section on the display unit 13 (ST355). When i is 2 or more, when the straight line section information of the ith straight line section is acquired, three first reference planes defining the (i-1)th straight line section (two first reference planes defining both ends of the straight line section, and a first reference plane including the straight line section) are determined, and the design support device 1 draws the (i-1)th straight line section based on these three first reference planes.

[0043] When the straight section information of the i-th straight section is acquired in step ST350, the design support device 1 adds 1 to i (ST360), returns to step ST335, and repeats the processing from step ST335 onwards.

[0044] If the first reference plane, the distance from which has been obtained in step ST340 from the plane figure, specifies the end of the reference rebar line (No in ST345), a user instruction to determine the end of the reference rebar line is input to the design support device 1. In this case, the design support device 1 obtains end point information including information indicating the plane figure corresponding to the first side selected in step ST335 and information indicating the distance from the plane figure obtained in step ST340 to the first reference plane (ST365).

[0045] 7A to 7H are diagrams illustrating an example of a method for inputting information about a reference rebar line. In this example, the user selects the plane figure F7 as the reference figure, and selects the side of the reference figure (F7) that is in contact with the plane figure F1 as the 0th side (FIG. 7A). When the 0th side is selected, a guide line (dotted line) of the first reference plane PA1 that is parallel to the plane figure F1 that is in contact with the 0th side is displayed on the screen. The user specifies the distance from the plane figure F1 to the first reference plane PA1 by translating the guide line of the first reference plane PA1 by operating the mouse pointer or the like (FIG. 7B). The distance from the plane figure F1 to the first reference plane PA1 may be represented by a numerical value, or may be represented by both the guide line and a numerical value. When the user stops translating the guide line of the first reference plane PA1, the distance from the plane figure F1 to the first reference plane PA1 is determined at the position of the guide line, and the starting point information (information indicating the plane figure F1 and information indicating the distance from the plane figure F1 to the first reference plane PA1) is acquired by the design support device 1.

[0046] Next, the user selects an edge of the reference figure (F7) that is in contact with the plane figure F2 as the first edge adjacent to the 0th edge (FIG. 7C). When the first edge is selected, a guide line of the first reference plane PA2 that is parallel to the plane figure F2 that is in contact with the first edge is displayed on the screen. The user specifies the distance from the plane figure F2 to the first reference plane PA2 by translating the guide line of the first reference plane PA2 (FIG. 7D). When the user stops the translation of the guide line of the first reference plane PA2, the distance from the plane figure F2 to the first reference plane PA2 is determined at the position of the guide line, and straight line section information of the first straight line section (information indicating the plane figure F2 and information indicating the distance from the plane figure F2 to the first reference plane PA2) is acquired by the design support device 1.

[0047] Next, the user selects an edge of the reference figure (F7) that is in contact with the plane figure F3 as the second edge adjacent to the first edge (FIG. 7E). When the second edge is selected, a guide line of the first reference plane PA3 that is parallel to the plane figure F3 that is in contact with the second edge is displayed on the screen. The user specifies the distance from the plane figure F3 to the first reference plane PA3 by translating the guide line of the first reference plane PA3 (FIG. 7F). When the user stops translating the guide line of the first reference plane PA3, the distance from the plane figure F3 to the first reference plane PA3 is determined by the position of the guide line. At this time, the three first reference planes (PA1 to PA3) that define the first straight line portion are determined, and the first straight line portion 31-1 is drawn based on these three first reference planes.

[0048] With the distance from the plane figure F3 to the first reference plane PA3 determined, the user then selects an edge of the reference figure (F7) that is in contact with the plane figure F4 as the third edge adjacent to the second edge (FIG. 7G). By the user selecting the third edge, it is determined that the first reference plane PA3 corresponding to the second edge is not a plane that defines the end of the reference rebar line. In this case, information indicating the plane figure F3 and information indicating the distance from the plane figure F3 to the first reference plane PA3 are acquired by the design support device 1 as straight line section information of the second straight line section.

[0049] When the user selects the third side, a guide line of the first reference plane PA4 parallel to the plane figure F4 tangent to the third side is displayed on the screen. The user specifies the distance from the plane figure F4 to the first reference plane PA4 by translating the guide line of the first reference plane PA4 (FIG. 7H). When the user stops translating the guide line of the first reference plane PA4, the distance from the plane figure F3 to the first reference plane PA3 is determined by the position of the guide line. At this time, the three first reference planes (PA2 to PA4) that define the second straight line portion are determined, and the second straight line portion 31-2 is drawn based on these three first reference planes.

[0050] With the distance from the plane figure F4 to the first reference plane PA4 determined, the user inputs an instruction to fix the end of the reference rebar line. As a result, information indicating the plane figure F4 and information indicating the distance from the plane figure F4 to the first reference plane PA4 are acquired by the design support device 1 as end point information.

[0051] By the method described above and shown in Figures 7A to 7H, starting end information, straight line section information of the first straight line section, straight line section information of the second straight line section, and end end information are obtained as information defining the reference rebar line 3 (reference rebar line information).

[0052] ST115: Return to Figure 3. When the reference rebar line information is acquired in step ST110, the design support device 1 draws the reference rebar line 3 based on the acquired reference rebar line information. For example, in the process of step ST355 (FIG. 6) described above, the design support device 1 draws straight line portions in parallel with the process of inputting the reference rebar line information. The design support device 1 draws each straight line portion of the reference rebar line in a predetermined manner (thick lines in the examples of FIGS. 7F to 7G) that can be distinguished from other guide lines, etc.

[0053] ST120: In response to an instruction input by a user, the design support device 1 acquires second reference plane information regarding a plurality of second reference planes (FIG. 2C) parallel to the reference figure selected in step ST110. For example, the design support device 1 acquires, as the second reference plane information, the range in which the second reference planes are arranged in a direction perpendicular to the reference figure, the intervals between the second reference planes in that range, and the like.

[0054] ST125: The design support device 1 determines the reinforcing bar line so as to be located on each of the multiple second reference planes indicated by the second reference plane information acquired in step ST120. The starting end of this reinforcing bar line is in contact with the first reference plane indicated by the starting end information acquired in step ST110, the i-th straight line portion is included in the first reference plane indicated by the straight line portion information of the i-th straight line portion acquired in step ST110, and the end end is in contact with the first reference plane indicated by the end end information acquired in step ST110. That is, the reinforcing bar line on each second reference plane is specified using the same first reference plane as the reference reinforcing bar line on the reference figure.

[0055] ST130: The design support device 1 draws a plurality of reinforcing bar lines (reinforcing bar line group) determined for a plurality of second reference planes indicated by the second reference plane information. Fig. 4B and Fig. 5A are diagrams showing examples of reinforcing bar line groups arranged within a three-dimensional object. In the examples of Fig. 4B and Fig. 5A, based on a reference reinforcing bar line 3 of a basic figure (F7), a plurality of reinforcing bar lines 4 are arranged in a direction perpendicular to the basic figure (F7) within the three-dimensional object 2 and parallel to the reference reinforcing bar line 3. The reinforcing bar line 4 shown in Fig. 4B is composed of one straight line portion, and the reinforcing bar line 4 shown in Fig. 5A is composed of two straight line portions in an L-shape.

[0056] ST135: The design support device 1 generates a 3D model of the reinforcing bar based on the reinforcing bar lines determined in step ST125. For example, the design support device 1 generates a cylinder that extends from the start end to the end end of the reinforcing bar lines so that its center line roughly coincides with the reinforcing bar lines as the 3D model of the reinforcing bar. In this case, the design support device 1 may use default values ​​applied to any reinforcing bar as values ​​of parameters required for generating the 3D model (diameter of the cylinder, bending radius of the bent part of the cylinder, etc.), or may use values ​​set individually by the user for each group of reinforcing bars.

[0057] ST140: The design support device 1 renders the 3D model of the reinforcing bar generated in step ST135 in response to the input instruction from the user. Fig. 5B is a diagram showing an example of the 3D model of the reinforcing bar, and is an enlarged diagram of a bent portion of the reinforcing bar 5 generated based on the reinforcing bar line 4 in Fig. 5A.

[0058] ST270: The design support device 1 generates a two-dimensional drawing (reinforcement drawing) based on the reinforcing bars designed by the user in steps ST100 to ST140. That is, the design support device 1 generates a two-dimensional reinforcing bar drawing viewed from a direction perpendicular to one plane figure selected from among the plane figures constituting the outer surface of a three-dimensional object in response to an instruction input by the user. The two-dimensional reinforcing bar drawing represents the multiple reinforcing bar lines determined in step ST125. Fig. 8A shows an example of an automatically generated two-dimensional drawing.

[0059] The design support device 1 also creates a quantity table of reinforcing bars based on the reinforcing bar arrangement designed by the user in steps ST100 to ST140. Fig. 8B shows an example of an automatically generated quantity table. Information displayed on the two-dimensional drawing or quantity table (such as the names and symbols of reinforcing bars) may be registered in the design support device 1 by the user during the design process of steps ST100 to ST140, for example.

[0060] As described above, according to this embodiment, one of the plane figures constituting the outer surface of a three-dimensional object (such as a skeleton) is selected as a reference figure in response to an instruction input by a user, and information (start end information, straight section information, and end end information) for defining a reference reinforcing bar line to be placed on the reference figure is acquired. Each straight section of the reference reinforcing bar line is included in a first reference plane parallel to the plane figure tangent to the reference figure, and the start end and end end of the reference reinforcing bar line are also tangent to the first reference plane parallel to the plane figure tangent to the reference figure. When information (second reference plane information) about multiple second reference planes parallel to the reference figure is acquired in response to an instruction input by a user, the reinforcing bar lines to be placed on each of the multiple second reference planes are determined. Each straight line portion of the reinforcing bar line arranged on each second reference plane is included in the same first reference plane as each straight line portion of the reference reinforcing bar line, the start end of the reinforcing bar line arranged on each second reference plane is in contact with the same first reference plane as the start end of the reference reinforcing bar line, and the end end of the reinforcing bar line arranged on each second reference plane is in contact with the same first reference plane as the end end of the reference reinforcing bar line. When the multiple reinforcing bar lines arranged on the multiple second reference planes are determined, a 3D model of the multiple reinforcing bars is automatically generated based on the multiple reinforcing bar lines. This makes it possible to design the reinforcing bar arrangement using very simple information (reference figure, first reference plane, second reference plane) based on the planar figure of the outer surface of the three-dimensional object, and to automatically generate a 3D model of the reinforcing bar from the result of the design. Therefore, it is possible to easily arrange the reinforcing bar of the 3D model in the reinforcing bar arrangement design. Furthermore, even if there is a design change, the arrangement of the reinforcing bar can be easily changed using very simple information, and the change can be automatically reflected in the 3D model of the reinforcing bar. Therefore, compared to the case where the 3D model is changed manually, the workload due to the design change can be significantly reduced.

[0061] In this embodiment, a 3D model of reinforcing bars is generated based on reinforcing bar lines, so designs can be made with clearer dimensions and distances based on the center position of reinforcing bars than when reinforcing bar design is performed using only 3D models. Also, by using reinforcing bar lines, 2D drawings that are more accurate and easier to use can be easily created automatically than when reinforcing bar design is performed using only 3D models.

[0062] In this embodiment, since the arrangement of rebars can be expressed both by rebar lines and a 3D model, when a large number of rebars are difficult to see when expressed in a 3D model, the arrangement of the rebars can be made easier to see by switching to a representation using rebar lines. In addition, by switching from a representation using a 3D model to a representation using rebar lines, the load of drawing is reduced, so that even hardware with low processing power can smoothly display the 3D arrangement pattern of rebars.

[0063] Next, some modifications of this embodiment will be described.

[0064] (Variation 1) FIG. 9 is a flowchart for explaining an example of a process for connecting reinforcing bars of two reinforcing bar groups. The design support device 1 determines two reinforcing bar line groups based on two reference reinforcing bar lines by the processing of steps ST100 to ST140 (FIG. 3) described above. These two reference reinforcing bar lines are arranged in the same reference figure, and their ends extend parallel to each other and are in contact with each other.

[0065] When the design support device 1 acquires the reference reinforcing bar line information for each of the two reference reinforcing bar lines described above in step ST110, it acquires connection setting information indicating that the two reinforcing bars based on the two reference reinforcing bar lines are connected at the parts corresponding to the ends of each reinforcing bar line (ends that extend parallel and are in contact) in accordance with instructions input by the user (ST200).

[0066] When a user's instruction is input to move the ends of two reference reinforcing bar lines whose connection has been set by the connection setting information along the extension direction of the straight section, the design support device 1 changes the reference reinforcing bar line information of the two reference reinforcing bar lines so that the connection at these ends is maintained (ST205). For example, the design support device 1 changes the reference reinforcing bar line information of each reference reinforcing bar line so that the sum of the lengths of the two straight sections is maintained constant even if the ends of the two connected straight sections are moved in response to a user's instruction.

[0067] When the reference rebar line information of the two reference rebar lines is determined, the design support device 1 determines two rebar lines based on the two connected reference rebar lines in each of the multiple second reference planes indicated by the second reference plane information (ST210). The design support device 1 generates a three-dimensional model of the two rebar lines determined in each second reference plane (ST215) and draws them according to a user's instruction (ST220). The design support device 1 creates a two-dimensional drawing and a quantity table according to the reinforcement results according to the instruction input by the user (ST270).

[0068] Fig. 10A is a diagram showing an example of a group of reinforcing bars viewed from the reference figure side, showing two reinforcing bars 4-1 and 4-2 whose ends are set to be connected to each other. The reinforcing bars 4-1 and 4-2 are set to be connected to each other at a connecting portion 6A. Fig. 10B is a perspective view showing the connected reinforcing bars 4-1 and 4-2 shown in Fig. 10A. Fig. 10C is an enlarged view of a connecting portion 6B of reinforcing bars 5-1 and 5-2 of a three-dimensional model corresponding to the reinforcing bars 4-1 and 4-2.

[0069] According to this modification, by setting the connection between two reference reinforcing bar lines, it is possible to generate a reinforcing bar (3D model) whose ends are connected, as shown in Fig. 10C. Furthermore, when the connection between the ends of two reference reinforcing bar lines is set, even if the ends are moved in the longitudinal direction of the straight section, the reference reinforcing bar line information is automatically changed so that the connection at the ends is maintained. Therefore, the connection position of the ends can be easily changed.

[0070] (Variation 2) FIG. 11 is a flowchart for explaining an example of a process for bringing reinforcing bars of two reinforcing bar groups into contact with each other. The design support device 1 determines two reinforcing bar line groups based on two reference reinforcing bar lines by the processing of steps ST100 to ST140 (FIG. 3) already described. In this modification, a plane including the i-th straight line portion (i is an integer equal to or greater than 1) in one reinforcing bar line group is parallel to a plane including the p-th straight line portion (p is an integer equal to or greater than 1) in the other reinforcing bar line group.

[0071] In response to instructions input by the user, the design support device 1 automatically translates the reinforcing bar lines of one of the reinforcing bar line groups, taking into account the diameters of the respective reinforcing bars, so that a surface corresponding to the i-th straight section of the three-dimensional model of the reinforcing bar generated based on the reinforcing bar lines of one of the reinforcing bar line groups mentioned above is in contact with a surface corresponding to the p-th straight section of the three-dimensional model of the reinforcing bar generated based on the reinforcing bar lines of the other reinforcing bar line group (ST230).

[0072] When the reinforcing bar wires 4 of one of the reinforcing bar wire groups are translated in step ST230, the design support device 1 generates a 3D model of the translated reinforcing bar wire group (ST235). The design support device 1 draws a 3D model of the two contacting reinforcing bar groups in response to instructions input by the user (ST240). The design support device 1 also creates a 2D drawing and a quantity table in accordance with the reinforcement arrangement results in response to instructions input by the user (ST270).

[0073] 12A and 12B are diagrams showing an example of a plurality of reinforcing bar wire groups, and show the connected reinforcing bar wires 4-1 and 4-2 shown in FIG. 12A, and the reinforcing bar wire 4-3 extending in a direction perpendicular to the reinforcing bar wires 4-1 and 4-2. When the reinforcing bar wire group of the reinforcing bar wire 4-3 is moved in parallel toward the reinforcing bar wire group of the reinforcing bar wires 4-1 and 4-2, the two are in contact with each other as shown in FIG. 12B. FIG. 12C is a perspective view showing the state in which the reinforcing bar wires 4-1 and 4-2 and the reinforcing bar wire 4-3 are in contact with each other as shown in FIG. 12B. FIG. 12D and FIG. 12E are enlarged views showing the state in which the reinforcing bar 5-1 corresponding to the reinforcing bar wire 4-1 and the reinforcing bar 5-3 corresponding to the reinforcing bar wire 4-3 are in contact with each other.

[0074] According to this modified example, one reinforcing bar wire is automatically translated in parallel relative to the other reinforcing bar wire, taking into account the diameter of each reinforcing bar, so that the reinforcing bars of two reinforcing bar groups corresponding to two reinforcing bar wire groups are in contact with each other, making it easy to design an arrangement pattern in which the reinforcing bar groups come into contact.

[0075] (Variation 3) FIG. 13 is a flowchart for explaining an example of a process for suspending a group of reinforcing bars between two reinforcing bars. The design support device 1 determines two reinforcing bar wire groups based on two reference reinforcing bar wires by the processing of steps ST100 to ST140 (FIG. 3) already described. In this modification, the i-th straight line portion (i is an integer equal to or greater than 1) in one reinforcing bar wire group and the p-th straight line portion (p is an integer equal to or greater than 1) in the other reinforcing bar wire group extend parallel to each other.

[0076] In response to input instructions from the user, the design support device 1 determines a plurality of reinforcing rebar lines representing a plurality of reinforcing rebars to be placed between a straight portion of the reinforcing bar corresponding to the i-th straight portion of one of the reinforcing bar wire groups described above and a straight portion of the reinforcing bar corresponding to the p-th straight portion of the other reinforcing bar wire group (ST250).

[0077] Here, a "reinforcing bar" refers to a reinforcing bar that is placed between a reinforcing bar belonging to one reinforcing bar group and another reinforcing bar belonging to another reinforcing bar group, when the two reinforcing bars have straight portions extending parallel to each other. The reinforcing bar extends in a direction perpendicular to the straight portion of the reinforcing bar. A "reinforcing bar wire" is a line that represents a reinforcing bar wire.

[0078] The design support device 1 generates a 3D model of the multiple reinforcing bars based on the multiple reinforcing bar lines determined in step ST250 (ST255). The design support device 1 draws the generated 3D model of the reinforcing bars in response to instructions input by the user (ST260). The design support device 1 also creates a 2D drawing and a quantity table in response to the results of the reinforcement in response to instructions input by the user (ST270).

[0079] Fig. 14A shows an example of a reinforcing bar wire before a reinforcing bar wire is hung, and Fig. 14B shows an example of a reinforcing bar wire after a reinforcing bar wire is hung on the example of Fig. 14A. In the examples of Fig. 14A and Fig. 14B, the reinforcing bar wire groups of reinforcing bar wires 4-1 and 4-4 extend parallel to each other, and the reinforcing bar wire groups of reinforcing bar wires 4-2 and 4-3 also extend parallel to each other. The reinforcing bar wire groups of reinforcing bar wires 4-1 and 4-2 are in contact with each other and perpendicular to each other, and the reinforcing bar wire groups of reinforcing bar wires 4-3 and 4-4 are in contact with each other and perpendicular to each other. The reinforcing bar wires 4-5, 4-5, and 4-6 are hung between the point where the reinforcing bar wires 4-1 and 4-2 are perpendicular to each other and the point where the reinforcing bar wires 4-3 and 4-4 are perpendicular to each other. 14C to 14E are diagrams showing an example of a three-dimensional model of reinforcing bars including reinforcing bars. Reinforcing bars 5-1 to 5-4 correspond to reinforcing bars 4-1 to 4-4, respectively, and reinforcing bars 5-5 to 5-7 correspond to reinforcing bars 4-5 to 4-7.

[0080] According to this modification, it is possible to add reinforcing rebar wires to an already created reinforcing bar structure with relatively simple operations and convert it into a 3D model. Since reinforcing rebar wires can be created without being parallel to the plane figure as in the case of normal reinforcing bar wires, various arrangement patterns can be designed.

[0081] It should be noted that the present invention is not limited to the above-described embodiment, but includes various variations.

[0082] In the above-described embodiment, an example was given in which the angle between the reference figure and the first reference plane was a right angle, but in other examples of this embodiment, the angle between the reference figure and at least some of the first reference planes may be an angle other than a right angle.

[0083] A part of the processing executed by the above-mentioned design support device 1 may be executed by another device (such as a server device or a terminal device). In this case, it can be said that the processing as the design support device according to this embodiment is executed by a plurality of computers in the design support device 1 and the other device. [Explanation of symbols]

[0084] 1...design support device, 11...communication unit, 12...input unit, 13...display unit, 14...storage unit, 141...program, 15...processing unit, 2...three-dimensional object, 3...reference reinforcing bar line, 30...starting end, 31-1, 31-2...straight section, 32...end end, 4, 4-1 to 4-4...reinforcing bar line, 4-5 to 4-7...reinforcing bar line, 5, 5-1 to 5-5...reinforcing bar, F1 to F8...plane figure, PA1 to PA6...first reference plane, PB...second reference plane

Claims

1. A method performed by a design support device that supports the design of rebar arrangement, comprising: One plane figure arbitrarily selected from a plurality of plane figures constituting the outer surface of a virtual three-dimensional object is called a reference figure, A plane that is tangent to the reference figure and parallel to the plane figure is called a first reference plane, A plane parallel to the reference figure is called a second reference plane, A virtual line representing the reinforcing bar and including one or more straight line portions is called a reinforcing bar line, One of the two ends of the reinforcing bar wire is called the start end and the other end is called the end end, The straight portion that is the i-th (i is an integer of 1 or more) from the starting end side of the reinforcing bar wire is called the i-th straight portion, The reinforcing bar line, in which one or more of the straight line portions are included in different first reference planes and which is located on the plane of the reference figure, is called a reference reinforcing bar line; Information about the first reference plane including one of the straight line portions of the reference reinforcing bar line is called straight line portion information of the one straight line portion, Information about the first reference plane that is in contact with the starting end of the reference reinforcing bar line is called starting end information, Information about the first reference plane that is in contact with the end of the reference reinforcing bar line is called end information, A first step of acquiring planar figure information regarding a plurality of planar figures constituting an outer surface of the three-dimensional object; a second step of drawing one or more of the plane figures based on the acquired plane figure information; A third step of selecting one of the drawn plane figures as the reference figure in response to an input instruction, and acquiring the start end information, the straight line section information of each straight line section, and the end end information for the reference rebar line located on the plane of the selected reference figure; A fourth step of drawing the reference reinforcing bar line based on the acquired start end information, the straight section information of each front straight section, and the end end information; a fifth step of acquiring second reference plane information regarding a plurality of second reference planes parallel to the selected reference figure in response to an input instruction; a sixth step of determining the reinforcing bar line located on each of the second reference planes indicated by the acquired second reference plane information, the start end of the reinforcing bar line being in contact with the first reference plane indicated by the acquired start end information, the i-th straight line portion being included in the first reference plane indicated by the acquired straight line portion information of the i-th straight line portion, and the end end of the reinforcing bar line being in contact with the first reference plane indicated by the acquired end end information; and a seventh step of generating a three-dimensional model of the reinforcing bar based on the reinforcing bar lines determined in the sixth step. method.

2. The third step comprises: A start point information acquisition process for acquiring the start point information about the reference reinforcing bar line in response to an input instruction; a straight section information acquiring step of acquiring the straight section information in sequence from the straight section on the starting end side to the straight section on the terminal end side in response to an input instruction after the starting end information acquiring step; and a terminal end information acquisition step of acquiring the terminal end information in response to an input instruction after the straight line section information acquisition step. The method of claim 1.

3. The start end information, the straight line portion information, and the end end information acquired in the third step include, as information about the first reference plane, information indicating one of the planar figures tangent to the reference figure, and information indicating a distance from the one planar figure to the first reference plane parallel to the one planar figure. The method of claim 1.

4. One side arbitrarily selected from the plurality of sides constituting the reference figure is called the 0th side, The i-th side is the side adjacent to the (i-1)-th side, the start point information acquiring step includes: selecting one of the sides of the reference figure as the 0th side in response to an input instruction; and acquiring the start point information including information indicating one of the planar figures contacting the reference figure at the selected 0th side and information indicating a distance from the one planar figure to the first reference plane parallel to the one planar figure; the straight line portion information acquisition step includes, in a case where straight line portion information of the i-th straight line portion is acquired, selecting an i-th side in response to an input instruction, and acquiring the straight line portion information of the i-th straight line portion, the straight line portion information including information indicating one of the plane figures that is in contact with the reference figure at the selected i-th side and information indicating a distance from the one of the plane figures to the first reference plane that is parallel to the one of the plane figures; the termination information acquisition step includes: selecting an L-th side (L is an integer equal to or greater than 2) in response to an input instruction; and acquiring the termination information including information indicating one of the planar figures contacting the reference figure at the selected L-th side and information indicating a distance from the one of the planar figures to the first reference plane parallel to the one of the planar figures. The method of claim 2.

5. The fourth step includes a straight line drawing step of drawing the (k-1)th straight line portion of the reference reinforcing bar line in a predetermined manner representing the determined straight line portion when the kth side (k is an integer from 2 to L) is selected in the straight line portion information acquisition step and the end point information acquisition step. The method according to claim 4.

6. Information defining one of the reference reinforcing bar lines, including the start end information, the straight line section information of each of the straight line sections, and the end end information, is called reference reinforcing bar line information, In the third step, when the reference reinforcing bar line information of the two reference reinforcing bar lines that are arranged on the same reference figure and whose ends extend parallel to each other and are in contact with each other is acquired, an eighth step acquires connection setting information indicating that the two reinforcing bars based on the two reference reinforcing bar lines are connected at the portions corresponding to the ends in response to an input instruction. and a ninth step of changing the reference reinforcing bar line information of the two reference reinforcing bar lines so that the connection at the ends is maintained when an instruction to move the ends of the two reference reinforcing bar lines, the connection being set by the connection setting information, along the extension direction of the straight line portion is input. The method of claim 1.

7. The plurality of reinforcing bar lines determined for the plurality of second reference planes indicated by the second reference plane information are referred to as a group of reinforcing bar lines; a tenth step of translating the first group of reinforcing bar wires in accordance with an input instruction when a plane including the i-th straight line portion in the first group of reinforcing bar wires is parallel to a plane including the p-th straight line portion (p is an integer of 1 or more) in the second group of reinforcing bar wires, so that a surface corresponding to the i-th straight line portion of the three-dimensional model of the reinforcing bar generated based on the reinforcing bar wires of the first group of reinforcing bar wires is in contact with a surface corresponding to the p-th straight line portion of the three-dimensional model of the reinforcing bar generated based on the reinforcing bar wires of the second group of reinforcing bar wires; The method of claim 1.

8. The plurality of reinforcing bar lines determined for the plurality of second reference planes indicated by the second reference plane information are referred to as a group of reinforcing bar lines; The plurality of reinforcing bars represented by the reinforcing bar wire group is referred to as a reinforcing bar group, When one reinforcing bar belonging to one of the reinforcing bar groups and another reinforcing bar belonging to another of the reinforcing bar groups have linear portions extending parallel to each other, the reinforcing bar that is laid between the linear portion of the one reinforcing bar and the linear portion of the other reinforcing bar and extends perpendicular to the linear portion is called a reinforcing bar, The wire representing the reinforcing steel bar is called a reinforcing steel bar wire, an eleventh step of determining, in a case where an i-th straight portion in the first group of reinforcing bar wires and a p-th straight portion (p is an integer of 1 or more) in the second group of reinforcing bar wires extend in parallel, a plurality of reinforcing bar wires representing a plurality of reinforcing bars to be laid between a straight portion of the reinforcing bar corresponding to the i-th straight portion and a straight portion of the reinforcing bar corresponding to the p-th straight portion in response to an input instruction; The seventh step includes generating a three-dimensional model of the plurality of reinforcing steel bars based on the plurality of reinforcing steel bars determined in the eleventh step. The method of claim 1.

9. a thirteenth step of generating, in response to an input instruction, a two-dimensional drawing viewed from a direction perpendicular to one of the planar figures constituting the outer surface of the three-dimensional object, the drawing showing the reinforcing bar lines determined in the sixth step; The method of claim 1.

10. A program including instructions to be executed by a design support device that supports the design of rebar arrangement, The process performed by the design support device in accordance with the command includes each step of the method according to any one of claims 1 to 9. program.

11. A design support device that supports the design of rebar arrangement, A processing section; a memory unit that stores instructions to be executed by the processing unit; The processing performed by the processing unit in accordance with the instructions includes each step of the method according to any one of claims 1 to 9. Design support equipment.

12. A design support device that supports the design of rebar arrangement, The present invention is provided with a means for carrying out each step of the method according to any one of claims 1 to 9. Design support equipment.

Images