JP7459642B2 - Design support system, design support method, and design support program - Google Patents

Description

The present invention relates to a design support system, a design support method, and a design support program that support design in BIM (Building Information Modeling).

Today, BIM is sometimes used in the design of buildings. By using this BIM, various information regarding structural design and equipment design can be managed for the three-dimensional model. In this BIM, each model element is created in units of members, and relationships between model elements can be maintained.

Therefore, support systems when using BIM are also being considered (see, for example, Patent Document 1). The support server disclosed in this document presents and registers problems under the control of the designer, supports sharing of the registered problems, and displays the contents of the registered problems so that they can be monitored. . Then, under the control of the administrator, a response policy corresponding to the content of the problem is transferred, and under the control of the engineer, it is provided with a function of presenting a solution to the problem according to the content of the problem and the content of the response.

JP 2018-517952 A

The precast concrete (PCa) construction method is a construction method in which the columns, beams, floors, balconies, and other components of a reinforced concrete structure are manufactured in a factory, and only the components are installed and joined at the construction site.High productivity and construction quality are expected. can. However, when using BIM tools in the PCa construction method, it was necessary to manually create floors and balconies one by one after designing columns and beams. In this case, it was difficult to create a model with relationships between model elements.

The design support system for solving the above problem includes a control unit that executes a BIM application that places a structural material model in a three-dimensional space. The control unit then creates a column-beam graph in which nodes are set in a column model and a beam model in a column-beam structure, and links are set to the beam model, creates a loop that goes around each node in the column-beam graph, calculates the area value of the figure enclosed by the loop according to the direction of the loop, and adds a member to the column-beam structure based on the area value.

According to the present invention, it is possible to design efficiently.

FIG. 1 is an explanatory diagram of a system according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of the hardware configuration of this embodiment. 1A is an explanatory diagram of data used in this embodiment, where (a) is BIM information, (b) is a column-beam graph, (c) is search route information, and (d) is a search result information. FIG. FIG. 3 is an explanatory diagram of the processing procedure of this embodiment. FIG. 3 is an explanatory diagram of the processing procedure of this embodiment. An explanatory diagram of the column-beam structure of this embodiment. FIG. 4 is an explanatory diagram of a column-beam graph according to the present embodiment. An explanatory diagram of a beam table of this embodiment. FIG. 4 is an explanatory diagram of the order of identifying nodes in the column-beam graph of the present embodiment. FIG. 6 is an explanatory diagram of sorting nodes in the column-beam graph of the present embodiment, in which (a) is an explanatory diagram before sorting, and (b) is an explanatory diagram after sorting. FIG. 13 is an explanatory diagram of a column-beam structure that requires correction in the column-beam graph of this embodiment. It is an explanatory diagram of the modification process in the pillar-beam graph of this embodiment, and (a) is an explanatory diagram before modification, and (b) is an explanatory diagram after modification. FIG. 4 is an explanatory diagram of a search process according to the present embodiment. 1A is an explanatory diagram of the generation of floors and balconies in BIM of this embodiment, and FIG. 1B is an explanatory diagram of the arrangement of a floor template model and a balcony template model, and FIG. 1B is an explanatory diagram of the arrangement of a floor model and a balcony model. FIG. 1 is an explanatory diagram of a column-beam model in BIM of this embodiment. An explanatory diagram of a model to which a floor and a balcony are added in BIM of this embodiment. FIG. 3 is a perspective view of a column and beam model in BIM of this embodiment. FIG. 1 is a perspective view of a model in this embodiment with a floor and a balcony added. FIG. 11 is an explanatory diagram of a search route using the column-beam graph of this embodiment.

Hereinafter, an embodiment of a design support system, a design support method, and a design support program will be described with reference to Figures 1 to 20. In this embodiment, the design support system will be described as a system used for designing floors and balconies using BIM at a building construction site.
In this embodiment, as shown in FIG. 1, a design device 20 is used.

(Explanation of hardware configuration)
The hardware configuration of the information processing device H10 that constitutes the design device 20 will be described using FIG. 2. The information processing device H10 includes a communication device H11, an input device H12, a display device H13, a storage unit H14, and a processor H15. Note that this hardware configuration is just an example, and it can also be implemented using other hardware.

The communication device H11 is an interface that establishes a communication path with other devices and transmits and receives data, such as a network interface or a wireless interface.

The input device H12 is a device that accepts input of various information, and is, for example, a mouse, a keyboard, or the like. The display device H13 is a display or the like that displays various information.
The storage unit H14 is a storage device that stores data and various programs for executing various functions of the design device 20. Examples of the storage unit H14 include ROM, RAM, hard disk, and the like.

The processor H15 controls each process in the design device 20 using programs and data stored in the storage unit H14. Examples of the processor H15 include a CPU, an MPU, and the like. This processor H15 expands a program stored in a ROM or the like into a RAM and executes various processes for each processing.

The processor H15 is not limited to performing software processing for all processes that it executes. For example, the processor H15 may include a dedicated hardware circuit (for example, an application-specific integrated circuit: ASIC) that performs hardware processing for at least part of the processing that it executes. That is, the processor H15 is [1] one or more processors that operate according to a computer program (software), [2] one or more dedicated hardware circuits that execute at least some of various processes, or [2] one or more dedicated hardware circuits that execute at least some of various processes. 3] Can be configured as a circuit including a combination thereof. A processor includes a CPU and memory, such as RAM and ROM, where the memory stores program codes or instructions configured to cause the CPU to perform processing. Memory or computer-readable media includes any available media that can be accessed by a general purpose or special purpose computer.

(System configuration)
Next, each function of the design device 20 as a design support system will be explained using FIG.
The design device 20 is a computer system that supports building design in BIM. This design device 20 includes a control section 21 and a storage section 22.

The control unit 21 performs three-dimensional CAD processing in BIM, which will be described later. For this purpose, it functions as a BIM execution unit 211 using a BIM application running on the operating system. Further, the control unit 21 functions as a setting unit 212, a graph creation unit 213, and a search unit 214.

The BIM execution unit 211 uses BIM technology to realize 3D CAD (computer-aided design) by arranging 3D models (objects) in a virtual 3D space. Each 3D model holds various pieces of information about the building as attributes. In this embodiment, the BIM execution unit 211 holds templates of 3D models of floors and balconies (floor template model, balcony template model).

The setting unit 212 executes processing for assigning node identifiers and link identifiers to columns and beams.
The graph creation unit 213 sets links to nodes and executes processing to create a column-beam graph.

The search unit 214 uses the numbers assigned to the columns and beams to rearrange the nodes and links and performs processing to search for a floor or balcony.
In the storage unit 22, BIM information 221, column and beam graphs 222, search route information 223, and search result information 224 are recorded.

As shown in FIG. 3(a), BIM information 221 records design information created in BIM. This BIM information 221 is recorded when a building is designed using 3D CAD. BIM information 221 includes project information, element models, placement information, connection information, and attribute information.

The project information includes information regarding the name of the construction site, longitude/latitude, direction of the construction site, etc.
The element model is information regarding a three-dimensional model (object) of each architectural element (member) used at a construction site.

Placement information is information about the coordinates at which each element model is placed. For example, for a beam model, the coordinates of the start point and end point and information about the direction are recorded. Furthermore, if the beam model is a broken beam, the coordinates of the breaking points are additionally recorded.

The connection information includes information regarding connection relationships with other element models. For example, for a beam, information regarding an identifier for identifying the connection source and connection destination (column or beam) is recorded.
The attribute information is attribute information of this architectural element. This attribute information includes information regarding specifications (standards, dimensions, area, volume, material, etc.).

As shown in FIG. 3(b), information regarding links created based on design information created in BIM is recorded in the column/beam graph 222. This pillar-beam graph 222 is recorded when the pillar-beam graph creation process is executed. The column and beam graph 222 includes information regarding link identifiers, start point identifiers, end point identifiers, directions, beam identifiers, and partial identifiers.

The link identifier information is an identifier for identifying each link between nodes.
The start point identifier and the end point identifier are information (node identifiers) for identifying the nodes that are the start point and the end point of the link, respectively.

The direction information is information that indicates the direction (angle) of the link. Here, in a plan view, the right direction is 0 degrees, the vertical direction is 90 degrees, the left direction is 180 degrees, and the vertical direction is 270 degrees.
The beam identifier information is information for identifying the beam on which each node is placed.
The part identifier information is an identifier for identifying each part when a single beam is divided into a plurality of links.

As shown in FIG. 3(c), the search route information 223 records information regarding the search route for each link of the pillar-beam graph 222. The search route information 223 is recorded when the search process is executed. The search route information 223 records link identifiers and orders for route identifiers.

The route identifier is information related to an identifier for specifying a route configuring a loop.
The link identifier is information related to an identifier for specifying a link that constitutes a search route.
The order information is the order in which each node on the search route is visited.

As shown in FIG. 3D, the search result information 224 records information regarding the result of determining the outer circumference or inner circumference of the search route. The search route information 223 is recorded when the search process is executed. The search route information 223 records search results for route identifiers.

The route identifier is information related to an identifier for specifying a search route that constitutes a loop.
In the search result, a flag for identifying the outer circumference or the inner circumference of this search route is recorded.

(Design support processing)
The design support process will be explained using FIG. 4.
First, the control unit 21 of the design device 20 executes column and beam setting processing (step S01). Specifically, columns and beams are designed using three-dimensional CAD. In this case, the BIM execution unit 211 of the control unit 21 creates BIM information 221 regarding a three-dimensional model of columns and beams (column-beam model consisting of a column model and a beam model), and records it in the storage unit 22.
For example, as shown in FIG. 18, a column and beam model is generated using three-dimensional CAD.

Next, the control unit 21 of the design device 20 executes node and link setting processing (step S02). Specifically, the setting unit 212 of the control unit 21 executes a process of assigning a node identifier to a pillar. Further, the setting unit 212 executes a process of assigning a link identifier to the beam.

In the column-beam structure ST1 shown in Figure 7, columns C[1] to C[7] are assigned to the columns. Additionally, beams G[1] to G[13] are assigned to the beams. Note that beams G[1] to G[13] have start and end points set, so arrows indicating the direction from the start to the end are added in Figure 7.

Next, as shown in Figure 8, a column-beam graph G1 is generated in which nodes A to T are assigned to the connection source, connection destination, and bending points of beams G[1] to G[13]. In this column-beam graph G1, nodes are set not only for the start and end points (columns C[1] to C[7]) of each beam G[1] to G[13], but also for intermediate positions of the beams, such as sub-beams.

For example, nodes A, D, E, I, J, M, and R correspond to columns C[1] to C[7], respectively. Also, node B is the starting point of beam G[3] on beam G[1], node C is the starting point of beam G[4] on beam G[1], and node F is the starting point of beam G[4] on beam G[6]. The end point of [3], node G, becomes the end point of beam G[4] on beam G[6]. Node K is the start point of beam G[11] on beam G[9], node L is the end point of beam G[8] on beam G[9], and node N is the start point of beam G[11] on beam G[10]. ], node O is the start point of beam G[13] on beam G[11], and node S is the end point of beam G[13] on beam G[12]. Note that if different beams are connected to the same position, different nodes are set. For example, node G and node H are at the same position on beam G[6], but are assigned different node identifiers because they are the end point of beam G[4] and the start point of beam G[8], respectively.

Nodes are also set when there is a bending point, such as a bent beam. For example, node P is bending point [1] of beam G [11], node Q is bending point [1] of beam G [12], and node T is bending point [2] of beam G [12].

Next, as shown in FIG. 4, the control unit 21 of the design device 20 executes a process for creating a column-beam graph (step S03). Specifically, the graph creation unit 213 creates a column-beam graph in which node identifiers and link identifiers are set and rearranged. Details will be described later with reference to FIG. 5.

Next, the control unit 21 of the design device 20 executes a search process (step S04). Specifically, the search unit 214 searches for a portion that will become a floor or a balcony. Details will be described later with reference to FIG. 6.

Next, the control unit 21 of the design device 20 executes floor and balcony setting processing (step S05). Specifically, the BIM execution unit 211 adds a three-dimensional model of the floor and balcony to a three-dimensional model (column-beam model) consisting of columns and beams in three-dimensional CAD. Details of this processing will be described later.

(Column-beam graph creation process)
The process of creating a column-beam graph will be described with reference to FIG.
First, the control unit 21 of the design device 20 executes a calculation process for the number of beams (step S101). Specifically, the graph creation unit 213 of the control unit 21 counts the number of beams (n) in the column-beam model of the BIM information 221 recorded in the storage unit 22.

Next, the control unit 21 of the design device 20 executes a beam sorting process (step S102). Specifically, the graph creation unit 213 of the control unit 21 sorts each beam in order of the lowest degree of dependency on other beams.
First, as shown in the beam table 500 in FIG. 9, beams G[1] to G[13] are arranged in the order of beam identifiers.

Next, as shown in the beam table 501, the connection information of the BIM information 221 is used to move down the order of beams that are connected to subsequent beams and have a dependent relationship. For example, beams G[3] and G[4], which are minor beams, are connected to the midpoint of beams G[5] and G[6] and depend on the other beams, so they are moved down after beams G[5] and G[6]. Beam G[8] is connected to the midpoint of beam G[9] and depends on the other beams, so they are moved down after beam G[9].

Next, the control unit 21 of the design device 20 executes beam variable initialization processing (step S103). Specifically, the graph creation unit 213 of the control unit 21 sets the beam variable “i” to “1”.

Next, the control unit 21 of the design device 20 executes a start point and end point specifying process (step S104). Specifically, the graph creation unit 213 of the control unit 21 uses the BIM information 221 of the beam G[i] to identify the starting point S and the ending point F of the beam G[i].

Next, the control unit 21 of the design device 20 executes a determination process as to whether the beam G[i] is a polygonal beam (step S105). Specifically, the graph creation unit 213 of the control unit 21 determines that the beam G[i] is a polygonal beam if "folded beam" is recorded in the attribute information of the BIM information 221 of the beam G[i].

If it is determined that the beam is not a broken beam ("NO" in step S105), the control unit 21 of the design device 20 executes a process of setting nodes and links (step S106). Specifically, the graph creation unit 213 of the control unit 21 identifies nodes on both sides of the beam G[i] between the start point S and the end point F in the order of the first direction (rightward: clockwise). In this case, a new link is generated at a node in the beam G[i] where it is connected midway to another beam, and is recorded in the column-beam graph 222.

As shown in FIG. 10, for beam G[i], nodes (N1 → N2 → N3 → N4 → N5) are identified in the order from the start point S through the end point F back to the start point S. Furthermore, the coordinates of each node are used to identify the direction of the links connecting the nodes and record them in the column-beam graph 222.

As shown in FIG. 11(a), for example, for beam G[1], since there are no other beams connected along the way, a link going around from node A at the start point S via node D at the end point F is set in the column-beam graph 222a in a clockwise route. Specifically, the links "A → D", "D → C", "C → B", and "B → A" are set. In this case, the direction is recorded using the attribute information of the BIM information 221. Note that if it is not a broken beam, "1" is set as the part.

Next, the control unit 21 of the design device 20 executes a determination process as to whether or not all beams are finished (step S112). Specifically, when the beam variable "i" has reached the number (n) of beams, the graph creation section 213 of the control section 21 determines that the processing for all beams is finished.

If it is determined that the process has not been completed for all beams ("NO" in step S114), the control unit 21 of the design device 20 executes the process of specifying the next beam (step S113). Specifically, the graph creation unit 213 of the control unit 21 adds “1” to the beam variable “i” and returns to step S104.

On the other hand, if it is determined that the beam is a folded beam ("YES" in step S105), the control unit 21 of the design device 20 executes a bending point counting process (step S107). Specifically, the graph creation unit 213 of the control unit 21 counts the number of bending points (m) of the beam G[i]. This number of bending points (m) is used to repeat the node and link setting process similar to step S106 "m+1" times for the polygonal beam.

Next, the control unit 21 of the design device 20 executes initial setting processing of the start point and end point (step S108). Specifically, the graph creation unit 213 of the control unit 21 sets the break point variable “j” to “1”, sets the start point S as the start point, and sets the break point C[j] closest to the start point node as the end point. Identify.

Next, the control unit 21 of the design device 20 executes a process of setting nodes and links (step S109). Specifically, the graph creation unit 213 of the control unit 21 identifies nodes on both sides between the start point and the end point in the order of the first direction (rightward: clockwise). In this case, it identifies nodes at positions where other beams are connected midway between the start point S and the bend point C[j], and records them in the column-beam graph 222. In this case, it sets the value of the bend point variable "j" as the part.

Next, the control unit 21 of the design device 20 executes a determination process as to whether or not the polygonal beam is finished (step S110). Specifically, when the graph creation unit 213 of the control unit 21 determines that the bending point variable “j” has reached the number of bending points (m), the graph creation unit 213 determines that the polygonal beam is finished.

If the bending point variable "j" has not reached the number of bending points (m) and it is determined that the polygonal beam is not completed ("NO" in step S110), the control unit 21 of the design device 20 sets the starting point and An end point update process is executed (step S111). Specifically, the graph creation section 213 of the control section 21 adds "1" to the break point variable "j", and sets the break point C[j-1] as the starting point and the breaking point C[j] as the ending point. Identify. However, if the bending point variable "j" is equal to the "number of bending points (m)+1", the ending point F is specified as the ending point.

Then, the control unit 21 of the design device 20 executes the node and link setting process (step S109).

For example, as shown in FIG. 11(a), the number of bending points (m) of the beam G[11] is "1". In this case, the graph creation unit 213 sets the break point variable "j" to "1" in the beam G[11], and creates a link from the node K to the node P, a link from the node K to the node P, clockwise from the starting point S to the bend point. A link from to node K, along with the direction, and the portion "1" are set in the column-beam graph 222a. Next, the graph creation unit 213 sets the break point variable "j" to "2", and between the break point and the end point F, creates a link from node P to node O, a link from node O to node N, and a link from node N. A link to the node P, along with the direction, is set in the column and beam graph 222a. Then, since the process has been repeated "m+1" times, the process for beam G[11] ends.

The number of bend points (m) of beam G[12] is "2". The graph creation unit 213 sets the bend point variable "j" to "1" between the start point S and the first bend point C[1] in beam G[12], and sets the link from node M to node Q and the link from node Q to node M to the portion "1" along with the direction in the column-beam graph 222a.

Next, between the bending point C[1] and the bending point C[2], the graph creation unit 213 sets the bending point variable "j" to "2", and creates a link from the node Q to the node T, and from the node T to the bending point variable "j" as "2". A link to the node Q, along with the direction, is set in the column and beam graph 222a.
Then, between the bending point C[2] and the end point F, setting the bending point variable "j" to "3", there is a link from node T to node R, a link from node R to node S, and a link from node S to node T. A link to the column and beam graph 222a is set to the part "3" along with the direction. Then, since the process has been repeated "m+1" times, the process for beam G[12] ends.

Next, the control unit 21 of the design device 20 executes a determination process to determine whether or not processing has been completed for all beams (step S112).

If it is determined that the process is complete for all beams (YES in step S112), the control unit 21 of the design device 20 executes a sorting process by start node and direction (step S114). Specifically, the graph creation unit 213 of the control unit 21 sorts the column-beam graph 222a, in which the start node, end node, direction, link, and part are set, by start node and direction.

In this case, by rearranging the column-beam graph 222a shown in FIG. 11(a) by the starting point node and direction, the column-beam graph 222b shown in FIG. 11(b) is generated. In this pillar-beam graph 222b, the same starting point nodes are arranged (grouped) together and arranged in ascending order of direction (angle).

Next, the control unit 21 of the design device 20 executes correction processing regarding the cantilever beam (step S115). Here, we will modify the cantilever beam to remove it from the node.
As shown in FIG. 12, it is assumed that a cantilever beam G[15] exists among the beams G[11] to G[14].
In this case, as shown in FIG. 13(a), nodes N11 to N17 are set at the start point and end point of each beam, and at the connection position of other beams.

Here, an explanation will be given using virtual nodes X and Y. If the only link with node X as the starting point is X→Y, (1) if there is a link "Y→X", then both the link "Y→X" and the link "X→Y" are deleted. (2) If there is no link "Y→X", then a link with node X as the end point is searched for, and if it is the link "Z→X", then the link "Z→X" is modified to "Z→Y" and the link "X→Y" is deleted. If there is no link with node X as the starting point, or if it has disappeared, then node X is deleted.

Specifically, as shown in FIG. 13(a), if the only link starting from node N16 is "N16→N15", (1) there is a link "N15→N16", so the link "N16→N15" " and the link "N15→N16" are deleted together, and node N16 is also deleted.

If there is no link "N15 → N13", a link ending at node N13 is searched for. In this case, since the link is "N11 → N13", the link "N15 → N11" is modified to the link "N13 → N11". Then, the links "N13 → N15" and "N15 → N13" are deleted together, and node N15 is also deleted.
Then, a similar process is performed for node N17, whereby the link "N17→N14" is also deleted.
Therefore, the link "N12→N17" is corrected to the link "N12→N14" as shown in FIG.
Then, the control unit 21 of the design device 20 ends the process of creating the column-beam graph.

(Search process)
Next, the search process (step S04) will be described with reference to FIG.
First, the control unit 21 of the design device 20 executes an initial setting process of the search link (step S201). Specifically, the search unit 214 of the control unit 21 sets the link in the last row in the column-beam graph 222 as the initial value of the search link (R).

In the column-beam graph 222b shown in FIG. 14, the link "T→R" in the last row is specified.
Next, the control unit 21 of the design device 20 executes a start setting process (step S202). Specifically, the search unit 214 of the control unit 21 sets the search link (R) as the start line. Here, the lowest link that has not yet been used for the search route is set as the search link (R).

Next, the control unit 21 of the design device 20 executes a search route initialization process (step S203). Specifically, the search unit 214 of the control unit 21 sets the initial value “1” to the order (i).

Next, the control unit 21 of the design device 20 executes a visited node setting process (step S204). Specifically, the search unit 214 of the control unit 21 sets the visited node [i] as the end node of the search link (R).

Next, the control unit 21 of the design device 20 executes a connection link search process (step S205). Specifically, the search unit 214 of the control unit 21 first identifies a candidate link whose start node is the end node of the search link (R). Next, the search unit 214 specifies, among the specified candidate links, the link one above the link (common link) whose beam identifier and portion match the search link (R) as a connection link. Note that if the common link is at the top of the candidate links, the last candidate link is identified as the connection link.

Next, the control unit 21 of the design device 20 executes a determination process as to whether or not the rotation has been completed (step S206). Specifically, when the search link (R) becomes the first link, the search unit 214 of the control unit 21 determines that it is a round trip.

If it is determined that the vehicle is not making a turn (“NO” in step S206), the control unit 21 of the design device 20 executes an order recording process on the search route (step S207). Specifically, the search unit 214 of the control unit 21 records the order in which “1” is added to the search route information 223. Then, the process returns to step S204.

On the other hand, if it is determined that a full circle has been completed (YES in step S206), the control unit 21 of the design device 20 executes an area calculation process (step S208). Specifically, the search unit 214 of the control unit 21 calculates the area of the polygon (loop) formed by the search route P (visited node [1] to visited node [i]) for each route identifier.

Here, the search unit 214 acquires the coordinates of the visited nodes of each search route P from the BIM information 221 in the storage unit 22. Then, the search unit 214 calculates the cross product using the coordinates of successive visited nodes on the search route P, and calculates the area value Area by summing the cross products.

Next, the control unit 21 of the design device 20 executes a process of determining whether the area value is positive (step S209). Specifically, the search unit 214 of the control unit 21 determines that the area value is positive when the sum of the calculated area values Area is equal to or greater than 0.
If it is determined that the area value is positive ("YES" in step S209), the control unit 21 of the design device 20 executes a recording process of the inner perimeter (floor) (step S210). Specifically, the search unit 214 of the control unit 21 records an "inner perimeter" flag as a search result in the search result information 224, in association with the route identifier. This "inner perimeter" flag determines that the polygon formed by the searched route P is a "floor".

On the other hand, if it is determined that the area value is negative ("NO" in step S209), the control unit 21 of the design device 20 executes recording processing of the outer periphery (balcony) (step S211). Specifically, the search unit 214 of the control unit 21 records the “outer circumference” flag as a search result in the search result information 224 in association with the route identifier. Based on this "outer circumference" flag, the polygon formed by the search route P is determined to be a "balcony".

Next, the control unit 21 of the design device 20 executes a search process for unprocessed links (step S212). Specifically, the search unit 214 of the control unit 21 searches for links above the search link (R) that have not yet been searched for a loop.

Next, the control unit 21 of the design device 20 executes a determination process as to whether there is an unprocessed link (step S213). Specifically, the search unit 214 of the control unit 21 determines that there are no unprocessed links if the order of search routes is recorded for all links.

If it is determined that there is an unprocessed link (“YES” in step S213), the control unit 21 of the design device 20 returns to the process of step S202.
On the other hand, if it is determined that there is no unprocessed link ("NO" in step S213), the control unit 21 of the design device 20 ends the search process.

(Floor and balcony setting processing)
Next, the floor and balcony setting process (step S05) will be explained.
In the column and beam graph 222, when the inner circumference flag is recorded as a search result, the BIM execution unit 211 of the control unit 21 of the design device 20 sets a predetermined height to the center line of the column model and beam model. Add a floor template model to the position.

In addition, if an outer perimeter flag is recorded as a search result, the BIM execution unit 211 of the control unit 21 adds a balcony template model having a predetermined length and thickness from the center line of the column model and beam model at a predetermined height position relative to the column model and beam model.

In this case, as shown in FIG. 15(a), a floor model model and a balcony model model are added to the column model and beam model.
Then, as shown in FIG. 15(b), the BIM execution unit 211 removes (Boolean calculation) the area that overlaps with the column model and beam model from the floor model and balcony model. Generate the model.

FIG. 16 is a plan view of the column-beam structure shown in FIG.
Figure 17 is a drawing in which floors and balconies have been added to the plan of the column-and-beam structure.
FIG. 18 is a perspective view of a three-dimensional model of the column-beam structure shown in FIG.
FIG. 19 is a perspective view of a three-dimensional model in which floors and balconies are added to the three-dimensional model of a column-beam structure.

According to this embodiment, the following effects can be obtained.
(1) In the present embodiment, the control unit 21 of the design device 20 executes a column-beam graph creation process (step S03). Through this processing, connection relationships in the three-dimensional model of the column-beam structure can be specified and expressed using nodes and links.

(2) In this embodiment, the control unit 21 of the design device 20 executes node and link setting processing (steps S106 and S109). Thereby, even if there is a small beam connected to another beam, the area surrounded by the small beam can be specified.
In this case, nodes are identified along a clockwise route between the starting point and the ending point, and recorded in the column-beam graph 222. Thereby, each node in each beam can be sequentially identified.

(3) In this embodiment, if it is determined that the beam is a broken beam (if "YES" in step S105), the control unit 21 of the design device 20 executes a process of counting the number of break points (step S107) and an initial setting process of the start point and the end point (step S108). This allows nodes to be set at the break points of the broken beam as well.

(4) In this embodiment, the control unit 21 of the design device 20 executes a sorting process by start node and direction (step S114). This allows links with the same start node to be arranged together and grouped. Here, in the column-beam graph 222, the direction is set as a clockwise path for one beam, and sorting can be performed taking this direction into consideration.

(5) In this embodiment, the control unit 21 of the design device 20 executes a correction process (step S115). This makes it possible to eliminate the creation of balconies in cantilevers.

(6) In this embodiment, the control unit 21 of the design device 20 executes a visiting node setting process (step S204) and a connection link search process (step S205). Here, among the candidate links connected to the search link (R), the link one level above the common link is identified as the connection link. As a result, by identifying a link with a different beam and part and a smaller direction one level above as the connection link, the outer periphery is clockwise (first direction) and the inner periphery is counterclockwise (second direction), and links are identified sequentially to generate a closed search route (loop).
20 shows a search route in the column-beam graph G1. In this way, if the outer periphery of the column-beam graph G1 is determined in the first direction, the other loops are determined in the second direction, and a closed route on the inner periphery of the column-beam graph G1 can be determined.

(7) In the present embodiment, the control unit 21 of the design device 20 executes an area calculation process (step S208) and a determination process as to whether the area value is positive (step S209). Thereby, it is possible to determine the inside and outside of the loop, and it is possible to distinguish between the floor area and the balcony area.
(8) In the present embodiment, in the column-beam graph creation process (step S03), the control unit 21 of the design device 20 executes the beam sorting process (S102) in descending order of dependence. By this process, when detecting a beam (such as a small beam) connected to the beam G[i] indicated by the beam variable "i", it is possible to narrow down the search range to the "i+1"th and subsequent beams. Therefore, when detecting connecting beams in the subsequent node and link setting processes (S106, S109), the processing time can be shortened by limiting the search target range.

This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- In the above embodiment, nodes are assigned to the connection source, connection destination, and bending point of the beam. A curved beam can be approximated by a straight line by setting multiple bending points.
Further, if only the floor area and the balcony area are to be identified, nodes may be set only at the connection points of columns and beams without setting nodes at bending points.

- In the above embodiment, the control unit 21 of the design device 20 executes the correction process (step S115). The beam-column graph may be created after performing this correction process.
- In the above embodiment, the control unit 21 of the design device 20 executes node and link setting processing (steps S106 and S109). In this case, the nodes are specified in order around the first direction (clockwise). As long as nodes are identified in the same direction, it is not limited to clockwise rotation. In the case of counterclockwise rotation, if the area value is positive, it is determined to be the "outer periphery (balcony)", and if the area value is negative, it is determined to be the "inner periphery (floor)".

- In the above embodiment, the control unit 21 of the design device 20 executes the search process for connection links (step S205) using the column-beam graph created by the sorting process (step S114) by the starting point node and direction. As long as the outer periphery and the inner periphery can be identified, the method of searching for connection links is not limited.

- In the above embodiment, the control unit 21 of the design device 20 executes the initial setting process of the search link (step S201). Here, the link in the last line is set as the initial value of the search link (R). Instead of this, any link may be set. When starting from an internal link in the column-beam graph 222, the search route closes at an intermediate node. In this case, the order from the start node to the closed node may be deleted.

- In the above embodiment, in the column-beam graph creation process (step S03), the control unit 21 of the design device 20 executes beam sorting process (S102). Here, the beam sorting process (S102) may be omitted. In this case, in the node and link setting processing (S106, S109), all beams are set as the search target range.

Next, the technical ideas that can be understood from the above-described embodiment and other examples will be described below together with their effects.
(a) A design support system including a control unit that executes a BIM application that arranges a structural material model in a three-dimensional space,
The control unit:
In a column-beam structure consisting of a column model and a beam model, a node is set in the column model,
A column-beam graph is generated in which links that identify the nodes are set in an order from the start points of the beam models to the start points via the end points of the beam models in a first direction,
In the column-beam graph, a loop is generated that sequentially visits and circulates each node in the first direction, and a loop is generated that sequentially visits and circulates each node in a second direction that is opposite to the first direction;
Calculate the area of the shape enclosed by each loop by calculating the cross product using the coordinates of the nodes visited in the loop;
The outer periphery or the inner periphery of the column-beam structure is specified depending on the positive or negative sign of the area value;
A design support system that adds components according to the outer periphery or the inner periphery.
(b) The design support system described in (a), characterized in that the control unit adds a balcony model to the outer periphery and adds a floor model to the area surrounded by the inner periphery.
(c) The design support system described in (a) or (b), characterized in that the control unit further sets a node at a portion of a beam model constituting the column-beam structure to which another beam model is connected.
(d) When the control unit includes a broken beam model in the beam model constituting the column-beam structure, the control unit further sets a node at the bending point of the broken beam model. The design support system described in any one of (a) to (c).

20...Support device, 21...Control unit, 211...BIM execution unit, 212...Setting unit, 213...Graph creation unit, 214...Search unit, 22...Storage unit, 221...BIM information, 222...Column-beam graph, 223...Search route information, 224...Search result information

Claims (4)

A design support system including a control unit that executes a BIM application that arranges structural material models in a three-dimensional space,
The control unit:
In a column-beam structure consisting of a column model and a beam model, a column-beam graph is generated in which a node is set in the column model and a link is set in the beam model;
A loop is generated around each node in the column-beam graph;
Calculating an area value of a figure enclosed by the loop according to the direction of the revolution;
A design support system that adds members to the column-beam structure based on the area value. The design support system according to claim 1, wherein the member is a floor or a balcony. A method for providing design support using a design support system equipped with a control unit that executes a BIM application that places a structural material model in a three-dimensional space, the method comprising:
The control unit,
In a column-beam structure consisting of a column model and a beam model, a node is set in the column model, a column-beam graph is generated in which a link is set in the beam model,
In the column-beam graph, generate a loop that goes around each node,
calculating an area value of a figure surrounded by the loop according to the direction of the circumference;
A design support method characterized by adding a member to the column-beam structure based on the area value. A program for providing design support using a design support system equipped with a control unit that executes a BIM application that places a structural material model in a three-dimensional space,
The control section,
In a column-beam structure consisting of a column model and a beam model, a node is set in the column model, a column-beam graph is generated in which a link is set in the beam model,
In the column-beam graph, generate a loop that goes around each node,
calculating the area value of a figure surrounded by the loop according to the direction of the circumference;
A design support program that functions as a means for adding members to the column-beam structure based on the area value.

Images