JP7326118B2 - Design support device - Google Patents

Description

The present invention relates to a design support device.

Buildings such as houses are sometimes provided with load-bearing walls to resist horizontal forces such as earthquakes and wind pressure applied to the building. In designing a building having load-bearing walls, layout design is performed to determine where the load-bearing walls are to be placed in the building. In this layout design, load-bearing walls are arranged in the building so as to satisfy various standards stipulated by the Building Standards Act and the like. Also, in recent years, some design support systems have been proposed that automatically perform such layout design (see Patent Document 1, for example).

In a building having load-bearing walls, the length of the load-bearing walls (specifically, the sum of the lengths of the load-bearing walls) required to resist the seismic force and wind pressure acting on the building is determined in advance as the required wall length. Therefore, when designing the layout of the load-bearing wall, it is necessary to arrange the load-bearing wall in the building so that the length of the load-bearing wall is equal to or greater than the required wall length.

Here, when designing the layout of the load-bearing walls, it is conceivable to design the layout, for example, in the following procedure. First, a load-bearing wall is provisionally placed in the building so that the length of the load-bearing wall is greater than the required wall length multiplied by a margin (the margin is greater than 1). In this case, the load-bearing walls are excessively placed in the building for safety reasons. After the provisional placement of the bearing walls, the detailed design of the placement of the bearing walls will be carried out. In this detailed design, by removing part of the temporarily placed load-bearing walls from the building, the placement of the load-bearing walls is adjusted so that the load-bearing walls are arranged in a balanced manner throughout the building. In this detailed design, the load-bearing walls are placed in a well-balanced manner by sequentially removing the load-bearing walls from the building, for example, so that the center of gravity of the building approaches the center of gravity of the building. Such a procedure allows the load-bearing walls to be optimally balanced in the building.

Japanese Patent Application Laid-Open No. 2002-350295

In the procedure for designing the layout of the bearing walls described above, first, the bearing walls are temporarily placed in the building in a slightly excessive manner. Is going. When the load-bearing walls are designed according to such a procedure, it is assumed that the load-bearing walls may not be sufficiently reduced depending on how the load-bearing walls are removed in the detailed design. In that case, more load-bearing walls than necessary will be arranged in the building, which may lead to inconvenience such as an increase in building cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a design support apparatus capable of appropriately arranging load-bearing walls in a building.

In order to solve the above-described problems, a design support device of a first invention is a design support device that performs design support when arranging a load-bearing wall in a target building having the load-bearing wall, the design support device comprising: a required wall length calculating means for calculating the sum of the lengths of the load-bearing walls required for the target building to resist a predetermined horizontal force acting on the target building as a required wall length; A load-bearing wall temporary placement means for temporarily placing the minimum load-bearing wall satisfying the wall length in the target building, and an effective wall of the load-bearing wall based on the placement position of the load-bearing wall temporarily placed in the target building effective wall length calculating means for calculating a length of the load-bearing wall, among the plurality of load-bearing walls temporarily arranged in the target building, for determining the load-bearing wall having a relatively large effective wall length to be longer than the load-bearing wall; and load-bearing wall replacement means for replacing the load-bearing wall with a larger thickness.

According to the present invention, the load-bearing walls are temporarily placed in the target building when designing the layout of the load-bearing walls. In this provisional placement, a minimum load-bearing wall that satisfies the required wall length is provisionally placed in the target building. Therefore, in this provisional placement, the minimum required load-bearing walls are provisionally placed in the target building without considering the margin.

Here, since the load-bearing walls arranged in the target building are usually installed on top of the beams, it is conceivable that the beams will bend due to the vertical load acting on the load-bearing walls. In this case, the load-bearing wall installed on such a bent beam will have a reduced load-bearing strength, in other words, it will be able to exhibit only a load-bearing strength lower than the load-bearing strength of the actual length of the load-bearing wall. Therefore, in the present invention, the effective wall length of the load-bearing wall is calculated as to how long the load-bearing wall can actually exert its load-bearing force. It is assumed that the

Specifically, it is thought that the load-bearing wall temporarily placed on the beam will reduce its load-bearing force as the deflection of the beam increases, in other words, the effective wall length will decrease as the deflection of the beam increases. In addition, it is considered that the magnitude of deflection of the beam changes depending on the position of the load-bearing wall placed on the beam. For example, it is conceivable that the load-bearing wall will change depending on whether or not it is located directly above the pillar that supports the beam from below. Therefore, it is considered that the effective wall length of the load-bearing wall is ultimately determined according to the arrangement position of the load-bearing wall in the target building. Therefore, when calculating the effective wall length of the load-bearing wall, the effective wall length of the load-bearing wall is calculated based on the arrangement position of the load-bearing wall in the target building.

Among the plurality of temporarily arranged load-bearing walls, a load-bearing wall having a relatively large effective wall length is replaced with a load-bearing wall having a larger wall length. In this case, among the plurality of load-bearing walls, the load-bearing wall arranged at a position where the load-bearing force is exhibited more is replaced with a load-bearing wall having a larger load-bearing force. Therefore, by replacing it, it is possible to greatly improve the load-bearing force of the load-bearing wall. In this case, it is possible to arrange the necessary load-bearing walls in the target building without greatly increasing the number of load-bearing walls from the time when the minimum necessary load-bearing walls are provisionally arranged. As a result, when arranging the load-bearing walls in the target building, it is possible to prevent the load-bearing walls from being arranged more than necessary, and it is possible to arrange the load-bearing walls appropriately.

A design support device according to a second aspect of the invention is the design support device according to the first aspect, wherein the load-bearing wall replacement means replaces the load-bearing wall with the longest effective wall length among the plurality of load-bearing walls temporarily arranged in the target building. is replaced with the load-bearing wall having a wall length larger than that of the load-bearing wall.

According to the present invention, among the plurality of load-bearing walls temporarily placed in the target building, the load-bearing wall having the longest effective wall length is replaced with a load-bearing wall having a wall length greater than that of the load-bearing wall. In this case, the replacement makes it possible to improve the load-bearing strength of the load-bearing wall more effectively. Therefore, it is possible to arrange the necessary load-bearing walls in the target building while further suppressing an increase in the number of load-bearing walls from the time when the minimum necessary load-bearing walls are provisionally arranged.

The top view which shows the structure of a building. The figure which shows schematic structure of a design support apparatus. 4 is a functional block diagram showing design support processing; FIG. FIG. 5 is a plan view for explaining the flow of adjustment of the load-bearing wall arrangement; 4 is a flowchart showing load-bearing wall placement adjustment processing. 6 is a flowchart showing load-bearing wall placement readjustment processing.

An embodiment embodying the present invention will be described below with reference to the drawings. In this embodiment, a design support device that provides design support when arranging load-bearing walls in a building is embodied. Before describing the design support system, an example of a building that is subject to design support by the design support system will be described below. In this embodiment, the building is a three-story building constructed by a steel framework construction method in which a framework is constructed with iron columns and beams. The outline of this building will be described below with reference to FIG. Note that FIG. 1 is a plan view showing the configuration of the building, and shows the second floor of the building.

As shown in FIG. 1, a building 10 is provided with an outer wall 11a provided on its outer periphery and a partition wall 11b that partitions adjacent indoor spaces. In the building 10, the walls 11 are formed by the outer walls 11a and the partition walls 11b. Further, the building 10 is provided with a bearing wall 15 inside the wall portion 11 . The load-bearing walls 15 are made of, for example, lattice columns, and are arranged in plural on each floor of the building 10 . The load-bearing wall 15 is erected on a beam in the building 10, and its lower end portion is joined (fixed) to the beam using a joint metal or the like.

In addition, when two mutually orthogonal directions in the building 10 are the X direction and the Y direction, respectively, the building 10 is provided with load-bearing walls 15 extending in the X direction and load-bearing walls 15 extending in the Y direction. .

A plurality of types (specifically, two types) of load-bearing walls 15 having different wall lengths (in other words, wall widths) are used as the load-bearing walls 15 in the building 10 . Among these load-bearing walls 15, the load-bearing wall 15 having a short wall length is the load-bearing wall 15a, and the load-bearing wall 15 having a large wall length is the load-bearing wall 15b. In this embodiment, the wall length of the load-bearing wall 15a is half the wall length of the load-bearing wall 15b. (1.0 m). Further, the load-bearing wall 15a is set to have half the load-bearing force of the load-bearing wall 15b.

Next, the design support device 20 will be described with reference to FIG. FIG. 2 is a diagram showing a schematic configuration of the design support device 20. As shown in FIG.

As shown in FIG. 2, the design support device 20 is composed of a personal computer and has a CAD program for designing a building. The design support device 20 includes a control section 21 , an operation section 22 , a display section 23 and a storage section 24 . The control unit 21 performs various types of processing such as design support processing when arranging the bearing wall 15 in the building 10 . The operation unit 22 is for inputting various kinds of information necessary for design support processing, and includes a keyboard, a mouse, and the like. The display unit 23 displays various information related to design support processing, and is composed of a display. The storage unit 24 stores various information necessary for design support processing.

Next, the flow of design support processing performed by the design support device 20 will be described with reference to FIG. FIG. 3 is a functional block diagram showing design support processing. Note that each block in FIG. 3 is implemented by the control unit 21 . In the following, it is assumed that the design support processing is performed on the building 10 described above, and the CAD data (design data) of the building 10 is stored in advance in the storage unit 24 of the design support device 20. shall be Specifically, it is assumed that the CAD data before the load-bearing wall 15 is installed in the building 10 is stored in advance in the storage unit 24 . Note that the building 10 corresponds to the target building.

As shown in FIG. 3, the building data acquisition unit 31 reads out and acquires the CAD data of the building 10 from the storage unit 24 . The CAD data of the building 10 includes data on the external shape and floor plan of the building 10, data on various members forming the building 10, and the like. In this design support process, the bearing wall 15 is arranged on the CAD data of the building 10 acquired by the building data acquisition unit 31 .

The required wall length calculator 32 calculates the total length of the load-bearing walls 15 required to resist a predetermined horizontal force acting on the building 10 as the required wall length. This calculation is performed based on the design data of the building 10 acquired by the building data acquisition unit 31 . Predetermined horizontal forces include seismic forces and wind forces. For each floor of the building 10, the required wall length calculator 32 calculates the sum of the lengths of the bearing walls 15 required for that floor as the required wall length L (ha) for that floor. The required wall length L (ha) is calculated for each of the load-bearing walls 15 extending in the X direction and the load-bearing walls 15 extending in the Y direction of the building 10 . That is, this calculation is performed for each direction (X direction, Y direction).

Specifically, when calculating the required length of the load-bearing wall 15 on the predetermined floor of the building 10, the required wall length calculation unit 32 first calculates the required length of the load-bearing wall 15 for each street on the predetermined floor. is calculated as the required wall length L (hb) of the street. Then, after calculating the required wall length L (hb) for each street, the calculated required wall length L (hb) for each street is integrated to obtain the required wall length L of the load-bearing wall 15 on the predetermined floor. (ha) is calculated. Note that the required wall length calculator 32 corresponds to the required wall length calculator.

The load-bearing wall provisional placement unit 33 provisionally places the minimum load-bearing wall 15 that satisfies the required wall length calculated by the required wall length calculation unit 32 in the building 10 . In the load-bearing wall temporary placement unit 33, for each floor of the building 10, the minimum load-bearing wall 15 that satisfies the required wall length L (ha) on that floor is provisionally placed on that floor (more specifically, within the wall portion 11). . Specifically, the load-bearing wall provisional placement unit 33 provisionally places the minimum load-bearing wall 15 whose total wall length is equal to or greater than the required wall length L (ha) of the floor. . In the load-bearing wall provisional placement unit 33, the load-bearing wall 15 is provisionally placed in each direction (X direction and Y direction) of the building 10. FIG. Note that the load-bearing wall temporary placement unit 33 corresponds to load-bearing wall temporary placement means.

FIG. 4A shows a state in which the load-bearing wall 15 is temporarily placed in the building 10 by the load-bearing wall temporary placement unit 33 . In addition, FIG. 4(a) shows a state in which the load-bearing wall 15 is temporarily arranged on the second floor of the building 10 (FIGS. 4(b) and (c) described later also show the second floor is shown). As shown in FIG. 4A, in this embodiment, the load-bearing wall 15a having a small wall length (specifically, the wall length is set to 500 mm) is used as the load-bearing wall 15 by the load-bearing wall provisional arrangement portion 33. 10 is provisionally placed. Therefore, in the present embodiment, the load-bearing wall temporary placement unit 33 temporarily places the load-bearing walls 15 a having the same wall length at a plurality of locations in the building 10 .

The load-bearing wall placement adjustment unit 34 performs placement adjustment processing for adjusting the placement of the load-bearing walls 15 temporarily placed in the building 10 . This arrangement adjustment processing will be described below with reference to the flowchart shown in FIG. Also, the layout adjustment process is performed for each floor of the building 10, for example, in the order of 1st floor→2nd floor→3rd floor. Also, the layout adjustment process is performed for each direction (X direction and Y direction) on each floor of the building 10 . In the following description, a floor on which layout adjustment processing is performed in the building 10 is referred to as a target floor. called target direction.

As shown in FIG. 5, first, in step S11, among the streets extending in the target direction (X direction or Y direction) on the target floor of the building 10, the street on which the load-bearing wall 15 is to be arranged is determined as the target street. That is, in this arrangement adjustment process, the arrangement adjustment of the load-bearing walls 15 is performed for each street in the target direction on the target floor, and in this step, the street on which the arrangement adjustment is to be performed is determined as the target street.

Also, here, it is assumed that the second floor of the building 10 is the target floor and the X direction of the second floor is the target direction. Then, in step S11 of the arrangement adjustment process, it is assumed that, of the X-direction streets on the second floor, a predetermined street Tx along the outer wall 11a (see FIG. 4A) is determined as the target street Tx. .

In the subsequent step S12, the effective wall length L(β) of each load-bearing wall 15 (15a) provisionally placed in Tx as intended is calculated (corresponding to effective wall length calculation means). Here, since the load-bearing wall 15a is installed on the beam of the building 10 as described above, it is conceivable that the beam bends downward due to the vertical load acting on the load-bearing wall 15a. In this case, the load-bearing wall 15a installed on such a bent beam is reduced in load-bearing strength. becomes. Therefore, in this step S12, it is calculated how long the load-bearing wall 15a temporarily placed on (on the beam of) the building 10 can actually exert the load-bearing force of the load-bearing wall 15a. The length is the effective wall length L(β).

Specifically, it is thought that the load-bearing wall 15a temporarily placed on the beam reduces the load-bearing force as the deflection of the beam increases. It is considered to be. Moreover, it is considered that the magnitude of deflection (amount of deflection) of the beam changes depending on the arrangement position of the load-bearing wall 15a. For example, whether or not the load-bearing wall 15a is located directly above the pillar that supports the beam from below, and if it is not located directly above the pillar, how far it is located from the position directly above the pillar. It is thought that it will change depending on whether the Therefore, the effective wall length L(β) of the load-bearing wall 15a is considered to be ultimately determined according to the arrangement position of the load-bearing wall 15a in the building 10 (specifically, the arrangement position on the beam).

Therefore, in step S12, when calculating the effective wall length L(β) of the load-bearing wall 15a temporarily placed in Tx as intended, it is calculated based on the arrangement position of the load-bearing wall 15a in the building 10. . Specifically, in this step S12, the effective wall length L(β) of the load-bearing wall 15a is determined whether or not the load-bearing wall 15a is positioned directly above the pillar, or whether the load-bearing wall 15a is positioned directly above the pillar If it is not located above the pillar, it is calculated based on the positional relationship with the pillar, such as how far it is located from the position directly above the pillar. More specifically, the relationship between the positional relationship between the load-bearing wall 15a and the column (below the beam) and the effective wall length L(β) of the load-bearing wall 15a is defined in advance as effective wall length information. , the effective wall length L(β) of the load-bearing wall 15a is calculated based on the positional relationship between the load-bearing wall 15a and the pillar by referring to the effective wall length information.

The positional information of the load-bearing wall 15a in the building 10 (including the positional relationship information of the above-described load-bearing wall 15a with the pillar) is grasped from the CAD data of the building 10. FIG. In addition, FIG. 4A shows the effective wall length L(β) of each bearing wall 15a calculated in step S12 in units of m.

In step S13, the load-bearing wall 15a provisionally placed at Tx as intended is evaluated. Here, (a) evaluation of the wall length of the load-bearing wall 15a and (b) evaluation of the joint strength of the load-bearing wall 15a with the beam are performed. In the evaluation of (a), the sum of the effective wall lengths L(β) of the load-bearing walls 15a temporarily placed in the target Tx is the required wall length of the target Tx calculated by the required wall length calculation unit 32. It is determined (evaluated) whether or not the height is equal to or greater than L (hb). In addition, in the evaluation (b), it is determined (evaluated) whether or not the strength of the joint portion where the bearing wall 15a joins the beam satisfies a predetermined required strength.

In step S14, it is determined whether each evaluation of (a) and (b) in step S13 was OK or NG. If the evaluations of (a) and (b) are both OK, the process proceeds to step S19. On the other hand, if the evaluation of either (a) or (b) is NG, the flow advances to step S15 to perform load-bearing wall replacement processing (corresponding to load-bearing wall replacement means). In this load-bearing wall replacement process, among the load-bearing walls 15a temporarily arranged at Tx as intended, the load-bearing wall 15a having a relatively large effective wall length L(β) is replaced with the load-bearing wall 15b having a larger wall length. replace with Specifically, in the load-bearing wall replacement process, among the load-bearing walls 15a temporarily arranged in Tx as intended, the load-bearing wall 15a having the largest effective wall length L(β) is replaced with the load-bearing wall 15b.

In the example of FIG. 4(a), among the load-bearing walls 15a arranged at Tx in a symmetrical manner, the load-bearing wall 15a with an effective wall length L(β) of 0.48 m (480 mm) has the longest effective wall length. has a height L(β). Therefore, in this example, as shown in FIG. 4B, the load-bearing wall 15a is replaced with a load-bearing wall 15b.

In the subsequent step S16, the effective wall length L(β) of each bearing wall 15a, 15b arranged in Tx as targeted is calculated. That is, here, the effective wall length L(β) of the load-bearing wall 15b replaced by the load-bearing wall replacement process and the effective wall length L(β) of the load-bearing wall 15a temporarily arranged are calculated respectively. . The process of step S16 is performed in the same procedure as the process of step S12 described above. Therefore, detailed description is omitted here. In addition, in the example of FIG. 4B, the effective wall length L(β) of the bearing wall 15b is calculated as 0.96 m (960 mm).

In the following step S17, the load-bearing walls 15 (15a, 15b) placed at Tx as intended are evaluated. Here, as in step S13 described above, (a) evaluation of the wall length of the load-bearing wall 15 and (b) evaluation of the joint strength of the load-bearing wall 15 with the beam are performed. Since the evaluation procedure is the same as in step S13, detailed description is omitted here.

In the subsequent step S18, it is determined whether each of the evaluations of (a) and (b) in step S17 was OK or NG. If the evaluations of (a) and (b) are both OK, the process proceeds to step S19. On the other hand, if the evaluation of either (a) or (b) is NG, the process proceeds to step S21.

In step S21, it is determined whether or not replacement processing (step S15) has been performed for all load-bearing walls 15a temporarily placed in Tx as intended. If the replacement process has been performed for all bearing walls 15a, the process proceeds to step S22. In this case, in this placement adjustment process, it is determined that the load-bearing wall 15 cannot be properly placed in the building 10 (that is, the placement is determined to be NG). After that, this process is terminated.

On the other hand, if it is determined in step S21 that there remains a load-bearing wall 15a that has not undergone the replacement process, the process returns to step S15 and the replacement process is performed again. In this case also, among the load-bearing walls 15a, the load-bearing wall 15a having the largest effective wall length L(β) is replaced with the load-bearing wall 15b. After the replacement process, each process after step S16 is performed.

If the load-bearing walls 15a that have not been replaced include a load-bearing wall 15a that cannot be replaced with the load-bearing wall 15b for reasons such as the structure of the building 10 or the floor plan, the load-bearing wall 15a is excluded from the target of the replacement process. For example, when the load-bearing wall 15a cannot be replaced with the load-bearing wall 15b, there is an opening adjacent to the load-bearing wall 15a.

In step S19, it is determined whether or not the arrangement of load-bearing walls 15 has been adjusted for all streets in the target direction on the target floor of the building 10 . If the load-bearing walls 15 have been adjusted for all streets, the process proceeds to step S20. In this case, it is determined that the placement of the load-bearing wall 15 has been completed in the target direction on the target floor (that is, it is determined that the placement is OK). After that, this process is terminated. If it is determined in step S19 that there is a street for which the load-bearing walls 15 have not been adjusted, the process returns to step S11 to determine the new street as the target street. Then, the processing after step S12 is performed for the new target street.

As described above, the load-bearing wall placement adjustment unit 34 performs the load-bearing wall 15 placement adjustment process for each direction (X direction and Y direction) on each floor of the building 10 . Then, when it is determined in step S20 that the layout adjustment process in each direction on each floor of the building 10 is OK, the design support process (FIG. 3) ends. This completes the placement (layout design) of the load-bearing walls 15 in the building 10 . In this case, since the load-bearing wall 15 is adjusted by replacing a portion of the load-bearing wall 15a provisionally placed in the building 10 with the load-bearing wall 15b, the load-bearing wall 15 is temporarily placed at the time of provisional placement of the load-bearing wall 15. The load-bearing walls 15 can be arranged without increasing the number of the load-bearing walls 15 .

On the other hand, if at least one of the layout adjustment processes in each direction on each floor of the building 10 is determined to be layout NG in step S22, the load-bearing wall layout readjustment unit 35 (FIG. 3) Proceed to wall placement readjustment processing. The load-bearing wall placement readjustment unit 35 performs load-bearing wall placement readjustment processing for the NG placement among the placement adjustment processing in each direction on each floor of the building 10 . In the load-bearing wall placement readjustment process, the placement of the load-bearing walls 15 in the building 10 is readjusted by a method different from the above-described load-bearing wall placement adjustment process. In the load-bearing wall placement readjustment process, the load-bearing wall 15 is based on the placement (placement state) of the load-bearing wall 15 at the time when the placement NG is determined (step S22) in the load-bearing wall placement adjustment process (FIG. 5). Readjust placement. Hereinafter, load-bearing wall arrangement readjustment processing will be described based on the flowchart shown in FIG. Here, it is assumed that load-bearing wall arrangement readjustment processing is performed based on the arrangement state of the load-bearing walls 15 in FIG. 4(b).

As shown in FIG. 6, first, in step S31, the center of rigidity D (the center of hardness of the building 10) and the center of gravity C (the center of the building 10) of the building 10 are calculated based on the CAD data of the building 10. FIG. FIG. 4B shows the calculated center of rigidity D and center of gravity C of the building 10 . In addition, in the example of FIG. 4(b), the center of rigidity D is shifted to the upper right in the figure with respect to the center of gravity C. As shown in FIG.

Here, in the load-bearing wall placement readjustment process, the load-bearing walls 15 are placed in the building 10 in a well-balanced manner so that the center of rigidity D of the building 10 approaches the center of gravity C of the building 10, thereby realizing the optimum placement of the load-bearing walls 15. I am planning to Therefore, in step S32, a process of newly arranging the load-bearing wall 15 in the building 10 is performed so that the center of rigidity D of the building 10 approaches the center of gravity C. FIG. In the example of FIG. 4(c), the load-bearing wall 15 is placed on the opposite side of the center of gravity C of the building 10 from the center of rigidity D (in plan view). Specifically, the load-bearing wall 15 is arranged on the street Tx on the second floor of the building 10 . As a result, in the example of FIG. 4(c), the center of rigidity D of the building 10 is closer to the center of gravity C side of the building 10 (lower left side in the drawing) than in the case of FIG. 4(b).

In step S33, the eccentricity of the building 10 is calculated. In step S34, it is determined whether or not the calculated eccentricity ratio satisfies a reference value. Specifically, it is determined whether or not the calculated eccentricity is 0.15 or less defined by the Building Standards Act. If the eccentricity ratio satisfies the reference value, this process is terminated. In this case, the arrangement (arrangement design) of the bearing wall 15 is completed. On the other hand, if the eccentricity does not satisfy the reference value, the process returns to step S32 and a new load-bearing wall 15 is arranged in the building 10 . After that, each process of steps S33 and S34 is performed again. That is, in this readjustment process, the processes of steps S32 to S34 are repeated until the eccentricity ratio satisfies the reference value in step S34.

In this way, the load-bearing wall placement readjustment unit 35 readjusts the load-bearing wall placement for each of the placement adjustment processing in each direction on each floor of the building 10 performed by the load-bearing wall placement adjustment unit 34, for each process determined to be placement NG. processing takes place.

According to the configuration of the present embodiment described in detail above, the following excellent effects are obtained.

When designing the layout of the load-bearing walls 15 in the building 10 , first, the load-bearing walls 15 are provisionally placed in the building 10 by the load-bearing wall provisional placement unit 33 . Specifically, a minimum load-bearing wall 15 (15a) that satisfies the required wall length is temporarily arranged in the building 10 . As a result, the minimum required load-bearing walls 15a are provisionally placed in the building 10 without considering the margin in the provisional placement of the load-bearing walls 15a.

Then, after the load-bearing walls 15 are temporarily arranged, the load-bearing wall arrangement adjusting unit 34 adjusts the arrangement of the temporarily arranged load-bearing walls 15a. In this arrangement adjustment, first, the effective wall length L(β) of the provisionally arranged load-bearing wall 15a is calculated. Here, it is considered that the effective wall length L(β) of the bearing wall 15 a is determined according to the arrangement position of the bearing wall 15 a arranged in the building 10 . Therefore, when calculating the effective wall length L(β) of the load-bearing wall 15 a , it is calculated based on the placement position of the load-bearing wall 15 a provisionally placed in the building 10 .

After calculating the effective wall length L(β), the effective wall length L The load-bearing wall 15a with a relatively large (β) was replaced with a load-bearing wall 15b with a longer wall length. In this case, among the plurality of load-bearing walls 15a, the load-bearing wall 15a arranged at a position that exerts more load-bearing force is replaced with the load-bearing wall 15b that has a larger load-bearing force. Therefore, the replacement can greatly improve the bearing force of the bearing wall 15 . In this case, it is possible to arrange the necessary load-bearing walls 15 in the building 10 without greatly increasing the number of load-bearing walls 15 from the time when the minimum necessary load-bearing walls 15a are provisionally arranged. As a result, when arranging the load-bearing walls 15 in the building 10, it is possible to prevent the load-bearing walls 15 from being arranged more than necessary, and it is possible to arrange the load-bearing walls 15 appropriately.

Specifically, among the temporarily arranged load-bearing walls 15a, the load-bearing wall 15a having the largest effective wall length L(β) is replaced with the load-bearing wall 15b. 15 can be improved more effectively. In this case, it is possible to arrange the necessary load-bearing walls 15 in the building 10 while further suppressing an increase in the number of the load-bearing walls 15 from the time when the minimum necessary load-bearing walls 15 are provisionally arranged.

The present invention is not limited to the above embodiments, and may be implemented as follows, for example.

In the above-described embodiment, during the load-bearing wall replacement process (step S15), among the plurality of load-bearing walls 15a temporarily arranged in the building 10, the load-bearing wall 15a having the largest effective wall length L(β) is Although the load-bearing wall 15b is replaced with the load-bearing wall 15b having a longer wall length, the method of replacing the load-bearing wall 15 is not necessarily limited to this. For example, among a plurality of (three or more) temporarily arranged load-bearing walls 15a, the load-bearing wall 15a having the second largest effective wall length L(β) may be replaced with the load-bearing wall 15b. In short, among the temporarily arranged load-bearing walls 15a, the load-bearing wall 15a having a relatively large effective wall length L(β) can be replaced with the load-bearing wall 15b. 15 can be greatly improved. Therefore, it is possible to arrange the necessary load-bearing walls 15 in the building 10 without greatly increasing the number of the load-bearing walls 15 from the time when the minimum required load-bearing walls 15a are provisionally arranged.

In the above embodiment, the case of using a lattice column as the load-bearing wall 15 was explained as an example, but the present invention can also be applied to a case where a material other than the lattice column, such as structural plywood, is used as the load-bearing wall 15. It is possible to apply

DESCRIPTION OF SYMBOLS 10... Building as a target building 15... Load-bearing wall 20... Design support device as a design support system 21... Control part 32... Required wall length calculation part as required wall length calculation means 33... Load-bearing wall A load-bearing wall temporary placement part as a temporary placement means.

Claims (2)

A design support device for providing design support when arranging a load-bearing wall in a target building for a building including the load-bearing wall,
a required wall length calculating means for calculating, as a required wall length, the sum of the lengths of the load-bearing walls required for the target building to resist a predetermined horizontal force acting on the target building;
load-bearing wall provisional placement means for provisionally placing the minimum load-bearing wall that satisfies the calculated required wall length in the target building;
effective wall length calculation means for calculating an effective wall length of the load-bearing wall based on the placement position of the load-bearing wall temporarily placed in the target building;
load-bearing wall replacement means for replacing the load-bearing wall having a relatively large effective wall length among the plurality of load-bearing walls temporarily arranged in the target building with the load-bearing wall having a wall length larger than that of the load-bearing wall; ,
A design support device comprising: The load-bearing wall replacement means replaces the load-bearing wall having the longest effective wall length among the load-bearing walls temporarily arranged in the target building with the load-bearing wall having a larger wall length than the load-bearing wall. 2. The design support device according to claim 1, wherein the replacement is performed.

Images