Method, program and design support device for supporting the design of rebar placement

Abstract

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

Description

[Technical Field]

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

[0002] The following patent document, for example, discloses a method for using a computer to assist in the design of reinforcing bar arrangement (reinforcement arrangement) in reinforced concrete structures. This reinforcement arrangement design support method includes a reinforcement pattern input step for inputting a reinforcement pattern for beam-column joints into a computer; a basic data input step for inputting data including cover thickness into a computer; a dimensional data input step for inputting data including the sizes of beams, columns, beam reinforcement, and column reinforcement into a computer; and a reinforcement drawing creation step for 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 user selects the approximate reinforcement positions on a grid-like pattern screen prepared in advance. This allows the user to easily 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. Using 3D models of rebars for reinforcement design makes it easier to visually grasp the fit of the rebars in the structure and their interference, making it easier to check the design and confirm the finished state. However, because a large number of rebars are involved in reinforcement design, manually creating 3D models of each rebar is extremely time-consuming. Furthermore, rebar design often requires design changes to avoid interference and other problems, which can require overall revisions to the placement of rebars, creating a significant burden for the designer.

[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 reinforcing bar placement, in which one plane figure arbitrarily selected from a plurality of plane figures that form the outer surface of a virtual three-dimensional object is called a reference figure, a plane that is parallel to the plane figure and that is tangent to the reference figure is called a first reference plane, a plane that is parallel to the reference figure is called a second reference plane, a virtual line that represents a reinforcing bar and that includes one or more straight line portions is called a reinforcing bar line, one end of the two ends of the reinforcing bar line is called a starting end, and the other end is called an end, and the i-th end from the starting end side of the reinforcing bar line is called a second reference plane. (i represents an integer of 1 or more) is called the i-th straight line section, one or more straight line sections are included in different first reference planes, and a reinforcing bar line located on the plane of the reference figure is called a reference reinforcing bar line, information regarding the first reference plane that includes one straight line section of the reference reinforcing bar line is called straight line section information of that one straight line section, information regarding the first reference plane that is in contact with the starting end of the reference reinforcing bar line is called starting end information, information regarding the first reference plane that is in contact with the ending end of the reference reinforcing bar line is called ending end information, and information regarding the multiple plane figures that make up the outer surface of the three-dimensional object is called the i-th straight line section. 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 point information, straight line section information of each straight line section, and end point information for 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 point information, straight line section information of each straight line section, and end point information; and a fourth step of drawing a plurality of parallel rebar lines to the selected reference figure in accordance with an input instruction. A method comprising: 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 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 that supports the design of rebar placement, and includes a processing unit and a memory unit that stores 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.

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

[0010] According to the present invention, it is possible to provide a reinforcement design support method, program, and design support device that can easily arrange reinforcing bars in a three-dimensional model and significantly reduce the workload due to design changes. [Brief explanation 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. [Figure 2] 2A to 2D are diagrams for explaining the terms used in this embodiment. [Figure 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. [Figure 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 illustrating 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 reference rebar lines. [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 reinforcing bar quantity table generated based on the designed reinforcement arrangement. [Figure 9] FIG. 9 is a flowchart illustrating 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 seen from the reference figure side, Fig. 10B is a diagram showing an example of a group of reinforcing bars arranged within a three-dimensional object, and Fig. 10C is an enlarged view of a connection portion of the reinforcing bars in the 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 contacting portions of reinforcing bars in a three-dimensional model. [Figure 13] FIG. 13 is a flowchart illustrating an example of a process for suspending a group of reinforcing bars between two reinforcing bars. [Figure 14] 14A and 14B are diagrams showing an example of a reinforcing steel wire, and Figs. 14C to 14E are diagrams showing an example of a reinforcing steel bar in a three-dimensional model. DETAILED DESCRIPTION OF THE INVENTION

[0012] Fig. 1 is a diagram showing an example of the configuration of a design support device 1 according to this embodiment. The design support device 1 shown in Fig. 1 performs processing to support the design of the arrangement of reinforcing bars (reinforcement arrangement) in a reinforced concrete structure or the like, in accordance with instructions 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 and other information according to user operations 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, or a camera.

[0015] The display unit 13 is a device that displays an image corresponding to the image signal generated by 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 saved 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, etc. 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 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 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), or 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 the one or more programs 141 stored in the storage unit 14. The design support device 1 may include 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 ASIC (application specific integrated circuit) or FPGA (field-programmable gate array)) 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 some 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, on a computer-readable recording medium (such as an optical disc, a memory card, a USB memory, or other non-transitory tangible medium). The processing unit 15 may read at least a portion of the one or more programs 141 recorded on such a recording medium using a recording medium reading device (such as an optical disc device) or an interface device (such as a USB interface), not shown, and write the program to the storage unit 14. Alternatively, the processing unit 15 may download at least a portion of the one or more programs 141 from another device connected to a communication network via the communication unit 11 and write the program to the storage unit 14. The one or more programs 141 may include instructions that cause the processing unit 15 to execute at least a portion of the processing according to this embodiment, which will be described later.

[0020] Here, 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) inside which reinforcing bars are arranged. The outer surface of the three-dimensional object is composed of multiple 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 graphic and the first reference plane. The "reference figure" is a plane figure arbitrarily selected from the plurality of plane figures constituting the outer surface of the above-mentioned three-dimensional object. In this embodiment, the reference figure is selected first when 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 Figure 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 "rebar line" is a virtual line representing a rebar, and is a line that includes one or more straight sections. The "starting point" and "ending point" are the two ends of a rebar line. Which of the two ends is designated as the "starting point" and which as the "ending point" is chosen arbitrarily. The "i-th straight section" (i represents an integer of 1 or greater) is the i-th straight section, counting from the starting end, of one or more straight sections in the reinforcing bar wire.

[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 segments that are each included in a different first reference plane and that is located on the plane of the reference figure. The reference rebar line 3 shown in the example of Figure 2D is located on the plane of the reference figure (plane figure F7) and has two straight line segments (31-1, 31-2) between the starting point 30 and the ending point 32. The first straight line segment 31-1 is included in the first reference plane PA2, and the second straight line segment 31-2 is included in the first reference plane PA3.

[0026] The "0th side" is one side arbitrarily selected from the multiple sides that make up 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 of the reference figure (plane figure F7), the side that is tangent to plane figure F1 is selected as the 0th side. In this example, the 1st to 5th sides are tangent to plane figures F2 to F6, respectively.

[0027] "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. "Starting end information" is information relating to 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 starting end 30 is information relating to first reference plane PA1. "End point information" is information relating to the first reference plane that is in contact with the end point of the reference rebar line. In the example of Fig. 2D, the end point information of end point 32 is information relating to first reference plane PA4. "Reference rebar line information" is information that defines one reference rebar line, and includes start point information, straight line section information of each straight line section, and end point information for that one reference rebar line.

[0028] In this embodiment, based on the reference rebar lines specified by the reference rebar line information acquired in accordance with the user's instructions, rebar lines are determined on each of multiple second reference planes set in accordance with the user's instructions (second reference plane information described later), and a three-dimensional model of the rebar is generated based on the determined rebar 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 reinforcement design support method 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 that form 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, identifies areas surrounded by the edges as plane figures, and acquires information about each of the identified plane figures 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 figures 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 start point information, straight line section information of each straight line section, and end point information for the reference reinforcing bar line located on the plane of the selected reference figure.

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

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

[0035] 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 the 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 section information acquisition step (first straight section) of the present invention. Steps ST335, ST340, and ST350 are an example of the straight section information acquisition step (second straight section and subsequent straight sections) of the present invention. Steps ST335, ST340, and ST365 are an example of the 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 graphic corresponding to the 0th side (a plane graphic that is in contact with the reference graphic at the 0th side) to a first reference plane that is parallel to the plane graphic (ST305). Then, the design support device 1 acquires starting point information including information indicating the plane graphic corresponding to the 0th side selected in step ST300 and information indicating the distance from the plane graphic obtained in step ST305 to the first reference plane (ST310).

[0038] Next, the design support device 1 selects a first side adjacent to the zeroth side in accordance with an instruction input by the user (ST315). In accordance with the instruction input by the user, the design support device 1 acquires the distance from a plane figure corresponding to this first side (a plane figure tangent to the reference figure at the first side) to a first reference plane parallel to the plane figure (ST320). Then, the design support device 1 acquires straight line portion information of the first straight line portion, 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 computer aided design system 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 to the plane figure (ST340).

[0041] If the first reference plane, the distance from which has been obtained from the planar figure in step ST340, 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 the 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). If i is 2 or greater, when the straight line section information of the ith straight line section is acquired, three first reference planes that define the (i-1)th straight line section (two first reference planes that define both ends of the straight line section, and a first reference plane that includes 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 linear section information of the i-th linear section is acquired in step ST350, the design support system 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 to the plane figure has been acquired in step ST340, defines the end of the reference rebar line (No in ST345), a user instruction to confirm the end of the reference rebar line is input to the design support device 1. In this case, the design support device 1 acquires 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 acquired 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 reference rebar lines. In this example, the user selects a plane figure F7 as the base figure and selects the edge of the base figure (F7) that is tangent to the plane figure F1 as the zeroth edge (FIG. 7A). When the zeroth edge is selected, a guide line (dotted line) of the first reference plane PA1 that is parallel to the plane figure F1 and tangent to the zeroth edge is displayed on the screen. The user specifies the distance from the plane figure F1 to the first reference plane PA1 by moving the guide line of the first reference plane PA1 in parallel using a mouse pointer or the like (FIG. 7B). The distance from the plane figure F1 to the first reference plane PA1 may be expressed numerically, or may be expressed by both the guide line and a numerical value. When the user stops moving the guide line of the first reference plane PA1 in parallel, the distance from the plane figure F1 to the first reference plane PA1 is determined at the position of the guide line, and 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 system 1.

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

[0047] Next, the user selects an edge of the reference graphic (F7) that is tangent to the plane graphic 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 graphic F3 that is tangent to the second edge is displayed on the screen. The user specifies the distance from the plane graphic 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 graphic 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] After the distance from the plane figure F3 to the first reference plane PA3 has been determined, the user then selects the 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). The user's selection of the third edge determines that the first reference plane PA3 corresponding to the second edge is not the 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 system 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 this 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 point 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 above-described method shown in Figures 7A to 7H, starting point information, straight line section information of the first straight line section, straight line section information of the second straight line section, and ending point 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 processing of step ST355 (FIG. 6) described above, the design support device 1 draws straight line portions in parallel with the processing 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 the 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 the direction perpendicular to the reference figure, the intervals between the second reference planes in that range, etc.

[0054] ST125: The design support device 1 determines a reinforcing bar line so that it is positioned 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 section is included in the first reference plane indicated by the straight line section information of the i-th straight line section acquired in step ST110, and the ending end is in contact with the first reference plane indicated by the end terminal information acquired in step ST110. In other words, the reinforcing bar line on each second reference plane is defined 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 groups) determined for a plurality of second reference planes indicated by the second reference plane information. FIGS. 4B and 5A are diagrams showing examples of reinforcing bar line groups arranged within a three-dimensional object. In the examples of FIGS. 4B and 5A, based on the reference reinforcing bar line 3 of the basic figure (F7), a plurality of reinforcing bar lines 4 parallel to the reference reinforcing bar line 3 are arranged in a direction perpendicular to the basic figure (F7) within the three-dimensional object 2. The reinforcing bar line 4 shown in FIG. 4B is composed of one straight line portion, while 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 bars based on the reinforcing bar lines determined in step ST125. For example, the design support device 1 generates, as the 3D model of the reinforcing bars, 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. In this case, the design support device 1 may use default values ​​applied to any reinforcing bars as values ​​of parameters required to generate the 3D model (such as the diameter of the cylinder and the bending radius of the bent portion of the cylinder), or may use values ​​individually set by the user for each group of reinforcing bars.

[0057] ST140: In response to the input user instructions, the design support device 1 renders the 3D model of the reinforcing bar generated in step ST135. Fig. 5B is a diagram showing an example of the 3D model of the reinforcing bar, and is an enlarged view of the 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 bar arrangement designed by the user in steps ST100 to ST140. That is, the design support device 1 generates a two-dimensional reinforcing bar arrangement drawing viewed from a direction perpendicular to one plane figure selected from multiple plane figures that form the outer surface of a three-dimensional object in accordance with an instruction input by the user. The two-dimensional reinforcing bar arrangement 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 for 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 in the two-dimensional drawing or quantity table (such as names and symbols of reinforcing bar groups) 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 (starting end information, straight section information, and ending end information) for defining a reference reinforcing bar line to be placed on that reference figure is acquired. Each straight section of the reference reinforcing bar line is included in a first reference plane that is parallel to the plane figure tangent to the reference figure, and the starting end and ending end of the reference reinforcing bar line also touch the first reference plane that is 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 section of a reinforcing bar line placed on each second reference plane is included in the same first reference plane as each straight section of a reference reinforcing bar line, the starting point of a reinforcing bar line placed on each second reference plane is tangent to the same first reference plane as the starting point of the reference reinforcing bar line, and the ending point of a reinforcing bar line placed on each second reference plane is tangent to the same first reference plane as the ending point of the reference reinforcing bar line. Once multiple reinforcing bar lines to be placed on multiple second reference planes are determined, a 3D model of multiple reinforcing bars is automatically generated based on the multiple reinforcing bar lines. This allows for reinforcing bar design using very simple information (reference figure, first reference plane, second reference plane) based on the planar figure of the outer surface of a three-dimensional object, and a 3D model of reinforcing bar can be automatically generated from the design results. This makes it easy to arrange reinforcing bars in a 3D model during reinforcing bar design. Furthermore, even if a design change occurs, the arrangement of reinforcing bars can be easily changed using very simple information, and the change can be automatically reflected in the 3D model of reinforcing bar. This significantly reduces the workload associated with design changes compared to manually changing a 3D model.

[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 the reinforcing bars than when reinforcing bar design is performed using only a 3D model. Also, by using reinforcing bar lines, it is possible to easily automatically create 2D drawings that are more accurate and easier to use than when reinforcing bar design is performed using only a 3D model.

[0062] In this embodiment, since the arrangement of rebars can be represented both as rebar lines and as a 3D model, if a large number of rebars are difficult to see when represented as a 3D model, the arrangement of the rebars can be made easier to see by switching to a representation using rebar lines. Furthermore, by switching from a representation using a 3D model to a representation using rebar lines, the rendering load is reduced, so that 3D arrangement patterns of rebars can be displayed smoothly even on hardware with low processing power.

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

[0064] (Variation 1) FIG. 9 is a flowchart illustrating an example of a process for connecting reinforcing bars of two reinforcing bar groups. The design support device 1 determines two groups of reinforcing bar lines based on two reference reinforcing bar lines through the processing of steps ST100 to ST140 (FIG. 3) already described. 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 inputs an instruction 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, even if the ends of the two connected straight sections are moved in response to a user instruction, 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.

[0067] Once the reference rebar line information for the two reference rebar lines has been 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 3D model of the two rebar lines determined in each second reference plane (ST215) and draws them in accordance with instructions from the user (ST220). The design support device 1 creates a 2D drawing and a quantity table in accordance with the reinforcement results in accordance with instructions input by the user (ST270).

[0068] Fig. 10A is a diagram showing an example of a group of reinforcing bars as seen from the reference figure side, showing two reinforcing bars 4-1 and 4-2 that are set so that their ends are connected to each other. Reinforcing bars 4-1 and 4-2 are set so that their ends are 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 that correspond to reinforcing bars 4-1 and 4-2.

[0069] According to this modification, by setting the connection between two reference rebar lines, it is possible to generate a rebar (3D model) with connected ends, as shown in Fig. 10C. Furthermore, when the connection between the ends of two reference rebar lines is set, even if the ends are moved in the longitudinal direction of the straight section, the reference rebar 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 wire groups based on two reference reinforcing bar lines through the processing of steps ST100 to ST140 (FIG. 3) already described. In this modification, a plane including the ith straight line portion (i is an integer of 1 or more) in one reinforcing bar wire group is parallel to a plane including the pth straight line portion (p is an integer of 1 or more) in the other reinforcing bar wire 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 wire groups, taking into account the diameters of the respective reinforcing bars, so that the surface corresponding to the i-th straight line portion of the three-dimensional model of the reinforcing bar generated based on the reinforcing bar lines of one of the reinforcing bar wire groups mentioned above comes into contact with the surface corresponding to the p-th straight line portion of the three-dimensional model of the reinforcing bar generated based on the reinforcing bar lines of the other reinforcing bar wire 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 this translated reinforcing bar wire group (ST235). The design support device 1 draws a 3D model of the two contacting reinforcing bar groups in accordance with 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 accordance with instructions input by the user (ST270).

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

[0074] According to this modified example, one reinforcing bar wire is automatically moved parallel 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 are in contact.

[0075] (Variation 3) FIG. 13 is a flowchart illustrating 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 through the processing of steps ST100 to ST140 (FIG. 3) already described. In this modification, the ith straight line portion (i is an integer equal to or greater than 1) in one reinforcing bar wire group and the pth 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 user instructions, the design support device 1 determines a plurality of reinforcing steel wires representing a plurality of reinforcing steel bars to be hung between the straight portion of the reinforcing steel bar corresponding to the i-th straight portion of one of the reinforcing steel wire groups and the straight portion of the reinforcing steel bar corresponding to the p-th straight portion of the other reinforcing steel wire group (ST250).

[0077] Here, "reinforcing steel" refers to a steel bar that is placed between a straight section of one reinforcing steel bar belonging to one reinforcing steel bar group and another reinforcing steel bar belonging to another reinforcing steel bar group, where the two have parallel straight sections. The reinforcing steel bar extends in a direction perpendicular to the straight section of the reinforcing steel bar. The "reinforcing steel wire" is a line that represents the reinforcing steel wire.

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

[0079] Figure 14A shows an example of reinforcing bars before reinforcing bars are installed, and Figure 14B shows an example of reinforcing bars after reinforcing bars have been installed compared to the example shown in Figure 14A. In the examples shown in Figures 14A and 14B, the reinforcing bar groups 4-1 and 4-4 extend parallel to each other, and the reinforcing bar groups 4-2 and 4-3 also extend parallel to each other. The reinforcing bar groups 4-1 and 4-2 are in contact with each other and perpendicular to each other, and the reinforcing bar groups 4-3 and 4-4 are in contact with each other and perpendicular to each other. Reinforcing bar wires 4-5, 4-6, and 4-6 are installed between the points where reinforcing bar wires 4-1 and 4-2 intersect perpendicularly and the points where reinforcing bar wires 4-3 and 4-4 intersect perpendicularly. 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 wires 4-1 to 4-4, respectively, and reinforcing bars 5-5 to 5-7 correspond to reinforcing wires 4-5 to 4-7.

[0080] This modification allows you to add reinforcing steel bars to an already created reinforcing steel structure with relatively simple operations and convert it into a 3D model. Because reinforcing steel bars can be created without being parallel to the plane figure like regular reinforcing steel bars, various layout patterns can be designed.

[0081] 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] Some of the processes executed by the design support device 1 described above may be executed by other devices (server devices, terminal devices, etc.). In this case, it can be said that the processes of the design support device according to this embodiment are executed by a plurality of computers in the design support device 1 and the other devices. [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...ending end, 4, 4-1 to 4-4...reinforcing bar line, 4-5 to 4-7...reinforcing 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 placement, One plane figure arbitrarily selected from a plurality of plane figures constituting the outer surface of the virtual three-dimensional object is called a reference figure, A plane that is parallel to the plane figure and 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 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 starting end, and the other end is called the ending end, The i-th (i is an integer of 1 or more) straight line portion from the starting end side of the reinforcing bar wire is called the i-th straight line portion, One or more of the straight line portions are included in different first reference planes, and the reinforcing bar line 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 the plurality of planar figures constituting the 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 accordance with an input instruction, and acquiring the start point information, the straight line section information of each straight line section, and the end point 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 lines located on each of the plurality of second reference planes indicated by the acquired second reference plane information, the starting ends of which are in contact with the first reference plane indicated by the acquired starting 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 ends of which are in contact with the first reference plane indicated by the acquired end terminal 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 is a start point information acquisition step of acquiring the start point information about the reference reinforcing bar line in response to an input instruction; a straight section information acquisition step of acquiring the straight section information in order 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 acquisition step; and a terminal end information acquisition step of acquiring the terminal end information in response to an input instruction after the straight 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 graphic as the zeroth side in response to an input instruction, and acquiring the start point information including information indicating one of the planar graphics that contacts the reference graphic at the selected zeroth side and information indicating a distance from the one planar graphic to the first reference plane that is parallel to the one planar graphic; the straight line portion information acquisition step includes, when acquiring straight line portion information of the ith straight line portion, selecting an ith side in response to an input instruction, and acquiring the straight line portion information of the ith straight line portion, the straight line portion information including information indicating one of the planar figures that is in contact with the reference figure at the selected ith side and information indicating a distance from the one planar figure to the first reference plane that is parallel to the one planar figure; the termination information acquiring step includes selecting an Lth 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 that contacts the reference figure at the selected Lth side, and information indicating a distance from the one planar figure to the first reference plane that is parallel to the one planar figure. 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 confirmed straight line portion when the kth side (k represents 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 of claim 4.

6. Information that defines one reference reinforcing bar line and includes the start end information, the straight section information of each straight section, 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 that indicates that the two reinforcing bars based on the two reference reinforcing bar lines are connected at the portions corresponding to the ends in accordance with input instructions. 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 end portions is maintained when an instruction to move the end portions of the two reference reinforcing bar lines whose connection has been set by the connection setting information is input along the extension direction of the straight section. 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 reinforcing bar line group, a tenth step of translating the first group of reinforcing bar wires in accordance with an input instruction when a plane including the ith straight line portion in the first group of reinforcing bar wires is parallel to a plane including the pth 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 ith 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 pth 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 reinforcing bar line group, The plurality of reinforcing bars represented by the reinforcing bar wire group is called 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 that extends in a direction 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 accordance with an input instruction, a plurality of reinforcing steel wires representing a plurality of reinforcing steel bars to be laid between the straight portion of the reinforcing steel bar corresponding to the i-th straight portion and the straight portion of the reinforcing steel bar corresponding to the p-th straight portion, when the i-th straight portion in the first reinforcing steel wire group and the p-th straight portion in the second reinforcing steel wire group extend parallel to each other; The seventh step includes generating a three-dimensional model of the plurality of reinforcing steel bars based on the plurality of reinforcing steel bar wires 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 selected from the planar figures constituting the outer surface of the three-dimensional object, the drawing showing the plurality of 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 reinforcing bar arrangement, The processing performed by the design support device in accordance with the command includes each step of the method described in any one of claims 1 to 9. program.

11. A design support device that supports the design of reinforcing bar arrangement, a processing unit; a storage 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 described in any one of claims 1 to 9. Design support equipment.

12. A design support device that supports the design of reinforcing bar arrangement, A method comprising: Design support equipment.

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