Bed beam design support device

Abstract

This invention provides a floor beam design support device that proposes a floor slab and supporting beam arrangement plan with favorable evaluation results, thereby assisting in the design of floor beams. [Solution] The floor beam design support device 10 designs the beams to be arranged including primary beams that are erected between main beams surrounding the floor slab, and when viewing the arrangement of the beams from one side to the other in the direction of primary beam intersection where the primary beams intersect, the arrangement of the beams is represented by a beam list value formed by listing a first number corresponding to the primary beam and a second number corresponding to the secondary beam in the order in which either the primary beam or the secondary beam erected between the primary beam and the main beam or between the primary beams appears, and the beam arrangement plan generation unit 12 calculates all possible beam list values ​​and generates an arrangement plan corresponding to each, a structural calculation unit 13 that performs structural calculations and evaluates each of the generated multiple arrangement plans, and a beam arrangement plan proposal unit 14 that extracts and proposes the arrangement plan with the best evaluation result.

Description

[Technical Field]

[0001] The present invention relates to a floor beam design support device that assists in the design of floor slabs and supporting beams for floor slabs. [Background technology]

[0002] Generally, the floor slabs that make up a building are supported by main beams that surround the floor slabs and secondary beams that are installed between the main beams. Patent Document 1 discloses a seismic isolation floor structure comprising a beam structure composed of main beams and / or secondary beams, a plurality of sliding bearings disposed on the beam structure, and a floor slab disposed on the sliding bearings, wherein the inertial force applied to the floor slab during an earthquake causes the floor slab on the sliding bearings to displace horizontally. The main beams are arranged around a rectangular plane to connect adjacent columns, with secondary beams arranged inside them. Furthermore, Patent Document 2 discloses a structure comprising a plurality of column members, a plurality of main beams erected on the column members, secondary beams provided inside the area surrounded by the plurality of main beams, and a floor slab provided above the secondary beams. Furthermore, Patent Document 3 discloses a floor structure comprising a plurality of column members, a plurality of main beams erected on the plurality of column members, a secondary beam surrounded by the plurality of main beams and erected on the plurality of main beams, and a floor slab provided above the plurality of main beams and secondary beams.

[0003] Incidentally, when designing a building, it is necessary to decide how to install secondary beams between the main beams surrounding the floor slab, including the option of not installing any secondary beams at all, and then design the floor slab and secondary beams accordingly. Traditionally, the design of such floor secondary beams has often been done based on rules of thumb. However, when designing floor joists based on empirical rules, the design of the floor joists is not necessarily based on any planned method. Therefore, once a certain layout plan is conceived that is well-evaluated in terms of desired performance such as construction costs, other layout plans that could actually be realized with better evaluation results may be overlooked, and as a result, the opportunity to construct with better evaluation results may be lost. It is desirable to support the design of floor beams by proposing beam placement plans that yield better evaluation results. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2007-231523 [Patent Document 2] Japanese Patent Publication No. 2018-3556 [Patent Document 3] Japanese Patent Publication No. 2022-111579 [Overview of the project] [Problems that the invention aims to solve]

[0005] The problem that this invention aims to solve is to provide a floor beam design support device that assists in the design of floor beams by proposing beam arrangement plans that yield good evaluation results. [Means for solving the problem]

[0006] To solve the above problems, the present invention employs the following means. That is, the present invention is a floor beam design support device for supporting the design of a floor slab and a beam supporting the floor slab, wherein the beam is designed to be arranged including primary beams erected between main beams surrounding the floor slab, and when viewing the arrangement of the beams from one side to the other in the primary beam intersection direction intersecting the primary beam, the first number corresponding to the primary beam and the second number corresponding to the secondary beam are listed in the order in which either the primary beam or a secondary beam erected between the primary beam and the main beam or between the primary beams appear, and a beam listing number is formed by listing the first number corresponding to the primary beam and the second number corresponding to the secondary beam. The present invention provides a floor beam design support device comprising: a beam arrangement plan generation unit that expresses the arrangement of the beams, the beam arrangement plan includes the beam list values, calculates all possible beam list values ​​in which the beams are arranged, and generates an arrangement plan corresponding to each of the calculated beam list values; a structural calculation unit that evaluates each of the generated plurality of arrangement plans by performing structural calculations when the beams are arranged to correspond to the beam list values ​​included in the arrangement plan; and a beam arrangement plan proposal unit that extracts and proposes the arrangement plans with good evaluation results. According to the above configuration, the secondary beams are designed to be arranged including primary secondary beams that are erected between the main beams surrounding the floor slab. When viewing the arrangement of the secondary beams from one side to the other in the direction of intersection of the primary secondary beams, the arrangement of the secondary beams is represented by a secondary beam list number, which is formed by listing a first number corresponding to the primary secondary beam and a second number corresponding to the secondary secondary beam, in the order in which either the primary secondary beam or the secondary secondary beam erected between the primary secondary beam and the main beam or between the primary secondary beams appears. For example, an arrangement of secondary beams in which two primary secondary beams are provided in parallel can be represented by a secondary beam list number formed by listing two first numbers. Furthermore, a configuration of beams consisting of one primary beam, two secondary beams installed between the primary beam and a main beam on one side of the primary beam in the direction of intersection with the primary beam, and one secondary beam installed between the primary beam and a main beam on the other side of the primary beam in the direction of intersection with the primary beam, can be represented by a beam list value formed by listing four numbers: a second number, a second number, a first number, and a second number. In this way, by using the beam list value described above, basically all configurations of beams can be represented in binary. Using these beam list values, the beam placement plan generation unit calculates all possible beam list values ​​in which beams can be placed. This can be easily achieved, for example, by combining the first and second numbers in a brute-force manner and excluding beam list values ​​in which beams cannot be placed. The beam placement plan generation unit then generates placement plans corresponding to each of the calculated beam list values. Furthermore, the structural calculation unit evaluates each of the generated placement plans by performing structural calculations assuming that beams are placed in accordance with the beam list values ​​included in that placement plan. In this way, placement plans are generated comprehensively and brute-force, and each placement plan is evaluated. Therefore, the placement plans proposed by the beam placement plan proposal unit that have a good evaluation result are the placement plans with the best evaluation result among all possible placement configurations. In this way, by proposing beam placement plans that yield favorable evaluation results, it becomes possible to support the design of floor beams.

[0007] Furthermore, the present invention provides a floor beam design support device for assisting in the design of a floor slab and beams supporting the floor slab, comprising: a beam arrangement pattern area map in which a coordinate space formed around each of one or more indicators relating to the floor slab is divided into areas corresponding to each of a plurality of arrangements relating to the beams, wherein each coordinate on the coordinate space belongs to the area corresponding to the arrangement that yields the best evaluation when each of the indicators is set to the coordinate value of that coordinate, the coordinate space of the beam arrangement pattern area map is divided into the areas, and a beam arrangement pattern acquisition unit acquires the arrangement corresponding to the area to which the coordinate whose coordinate value is set to the value specified in each of the indicators belongs when a value is specified in each of the indicators; a structural calculation unit performs structural calculations on an arrangement plan in which the beams are arranged according to the acquired arrangement plan and evaluates the arrangement plan; and a beam arrangement plan proposal unit proposes the arrangement plan along with the evaluation results. With the above configuration, the beam arrangement pattern region map is formed by dividing a coordinate space, which is formed around one or more indicators related to the floor slab as axes, into regions corresponding to each of several patterns of beam arrangement. The coordinate space of this beam arrangement pattern region map is divided into regions such that each coordinate on the coordinate space belongs to the region corresponding to the pattern that yields the best evaluation when each indicator is set to the coordinate value of that coordinate. By using such a beam arrangement pattern region map, when designing a floor slab, by specifying the values ​​determined for each indicator, it is possible to determine which of the several regions that divide the coordinate space of the beam arrangement pattern region map the coordinate values ​​of the coordinates with the specified values ​​belong to, and by obtaining the beam arrangement pattern corresponding to the region to which the coordinates belong, it is possible to find the beam arrangement pattern that yields the best evaluation when realizing the floor slab to be designed. Based on this idea, when a value is specified for each indicator, the beam configuration acquisition unit acquires the configuration corresponding to the region to which the coordinates whose coordinate values ​​are the values ​​specified for each indicator belong from the beam arrangement configuration region map. The structural calculation unit performs structural calculations on the arrangement plan in which the beams are arranged according to the acquired configuration, and evaluates the arrangement plan. The beam arrangement plan proposal unit proposes the arrangement plan that yields the best evaluation, along with the evaluation results. In this way, by proposing beam placement plans that yield favorable evaluation results, it becomes possible to support the design of floor beams.

[0008] In one embodiment of the present invention, one or more of the indicators are a first indicator and a second indicator, where the first indicator and the second indicator are side length ratios, which are the length in the long side direction of the floor slab and the value obtained by dividing the length in the short side direction of the floor slab by the length in the long side direction. Multiple beam arrangement mode region maps are provided to correspond to each of the combinations of multiple values ​​that the live load of the floor slab can take and multiple values ​​that the slab thickness of the floor slab can take. When values ​​are specified for the live load and the slab thickness in addition to the first indicator and the second indicator, the beam arrangement mode acquisition unit selects a beam arrangement mode region map corresponding to the specified value of the live load and the specified value of the slab thickness, and acquires the beam arrangement mode corresponding to the region to which the coordinates, whose coordinate values ​​are the values ​​specified for each of the first indicator and the second indicator, belong, from the selected beam arrangement mode region map. With the configuration described above, the beam arrangement pattern area map and the beam pattern acquisition unit can be appropriately implemented. [Effects of the Invention]

[0009] According to the present invention, a floor beam design support device can be provided that assists in the design of floor beams by proposing a beam arrangement plan that yields good evaluation results. [Brief explanation of the drawing]

[0010] [Figure 1]It is a side view of a column-beam structure in which floor joists, which are the objects to be supported in the floor joist design support device according to the first and second embodiments of the present invention, are provided. [Figure 2] It is a plan view of the column-beam structure of FIG. 1 and shows a first example of the arrangement mode of floor joists. [Figure 3] It is a diagram showing a second example of the arrangement mode of floor joists. [Figure 4] It is a diagram showing a third example of the arrangement mode of floor joists. [Figure 5] In the third example shown in FIG. 4, it is a diagram showing the case where two primary floor joists are provided close to each other. [Figure 6] In the third example shown in FIG. 4, it is a diagram showing the case where two primary floor joists are provided far apart from each other. [Figure 7] It is a diagram showing a fourth example of the arrangement mode of floor joists. [Figure 8] In the fourth example shown in FIG. 7, it is a diagram showing the case where a primary floor joist is provided close to one of the main beams. [Figure 9] In the fourth example shown in FIG. 7, it is a diagram showing the case where a primary floor joist is provided close to the other main beam. [Figure 10] It is a block diagram of the floor joist design support device according to the first embodiment. [Figure 11] It is a diagram showing an example of the result of structural calculation for the layout shown in FIG. 4. [Figure 12] It is a diagram showing an example of the output of the floor joist design support device. [Figure 13] It is a flowchart of a floor joist design support method using the floor joist design support device according to the first embodiment. [Figure 14] It is a block diagram of the floor joist design support device according to the second embodiment of the present invention. [Figure 15] It is a diagram showing a fifth example of the arrangement mode of floor joists. [Figure 16] It is a diagram showing an example of a floor joist arrangement mode area map. [Figure 17]Figure 15 shows an example of a uniform arrangement response surface corresponding to the arrangement of joists that are uniformly arranged as shown in the fifth example above. [Figure 18] This figure shows the uniformly distributed response surface when the number of primary joists is fixed to values ​​from 1 to 8. [Figure 19] This figure shows the response surface for each case where the number of secondary beams is 1 to 3, corresponding to the beam arrangement shown in the fourth example above, with the X-axis representing the length in the direction of the longer side and the Y-axis representing the ratio of the side lengths. [Figure 20] This is a flowchart of the floor beam design support method using the floor beam design support device of the second embodiment described above. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will be described in detail below with reference to the drawings. (First Embodiment) The floor beam design support device of this embodiment assists in the design of floor slabs and the beams that support the floor slabs. Before describing the details of the floor beam design support device, we will first describe the column-beam frame structure that includes the beams that the floor beam design support device is designed for. Figure 1 is a side view of a column-beam frame in which a secondary beam, the target of design support by the floor secondary beam design support device, is provided. Figure 2 is a plan view of the column-beam frame in Figure 1, showing a first example of the arrangement of secondary beams.

[0012] The column-beam frame 1 comprises columns 2, main beams 3, and secondary beams 4. Column 2 is provided extending in the vertical direction. Multiple columns 2 are provided spaced apart from each other in both the first horizontal direction H1 (left-right direction in Figure 2), which is along the horizontal plane, and the second horizontal direction H2 (up-down direction in Figure 2), which is in a direction intersecting the first horizontal direction H1 in the horizontal plane. In this embodiment, the first horizontal direction H1 and the second horizontal direction H2 are perpendicular to each other. The first horizontal direction H1 and the second horizontal direction H2 are the directions in which the secondary beams (primary secondary beams 5 and secondary secondary beams 6), which will be described later, extend. Therefore, when the secondary beams intersect at an angle rather than perpendicularly, the first horizontal direction H1 and the second horizontal direction H2 do not intersect perpendicularly to each other, but at a certain angle. In this embodiment, column 2 is formed from a concrete-filled steel pipe column. However, column 2 may be realized from other structures such as steel frame, reinforced concrete, or steel-reinforced concrete.

[0013] The main beam 3 is installed between two adjacent columns 2. The main beam 3 is installed between two columns 2 spaced apart in the first horizontal direction H1, extending in the first horizontal direction H1. Furthermore, the main beam 3 is installed between two columns 2 spaced apart in the second horizontal direction H2, extending in the second horizontal direction H2. The floor slab 7 is constructed to be supported by the main beam 3 and the secondary beam 4, which will be explained later. In this embodiment, the main beam 3 and secondary beam 4 are made of steel. However, the main beam 3 may be made of another structure, such as reinforced concrete.

[0014] The secondary beam 4 is equipped with primary secondary beams 5. The primary secondary beams 5 are installed between the main beams 3. In the example in Figure 2, two primary secondary beams 5A and 5B are installed between the main beam 3B shown at the bottom of Figure 2 and the main beam 3D shown at the top, extending in the second horizontal direction H2. In the example in Figure 2, the secondary beam 4 is equipped with secondary beams 6. The secondary beams 6 are installed between the primary beams 5 and the main beam 3, or between the primary beams 5. In the example in Figure 2, secondary beams 6A, 6B, and 6C are installed between the left main beam 3A and the left primary beam 5A, between the left primary beam 5A and the right primary beam 5B, and between the right primary beam 5B and the right main beam 3C, respectively, so as to extend in the first horizontal direction H1. In this embodiment, the secondary beams 6 are installed at a 90-degree angle to the primary beams 5 so as to be perpendicular to the primary beams 5, but the secondary beams 6 may also be installed at an inclination with respect to the primary beams 5. Hereafter, when referring to main beam 3 as "lower" main beam 3 and "upper" main beam 3, the terms "lower" and "upper" do not refer to the upper and lower sides in the vertical direction, but rather to the upper and lower sides on the plane of the paper when the column-beam frame 1 is viewed in plan, as shown in Figure 2, etc.

[0015] Figure 3 shows a second example of the arrangement of the secondary beams. In the example shown in Figure 3, one primary secondary beam 5 is installed between the left main beam 3A and the right main beam 3C, extending in the first horizontal direction H1. Furthermore, in the example shown in Figure 3, two secondary beams 6D are installed between the lower main beam 3B and the primary beam 5, extending in the second horizontal direction H2, and two secondary beams 6E are installed between the primary beam 5 and the upper main beam 3D, also extending in the second horizontal direction H2.

[0016] The floor beam design support device assists in the design of the floor slab 7 and the secondary beams 4 by searching for and proposing a proposed arrangement P of secondary beams 4 that satisfies the required strength and yields favorable evaluation results such as construction costs, when four main beams 3 are arranged, for example, in a rectangular shape to surround the floor slab 7, as shown in Figures 2 and 3. In this embodiment, in order to efficiently search for a proposed arrangement P of the secondary beams 4, the proposed arrangement P is represented by the primary secondary beam extension direction, which indicates the direction in which the primary secondary beams 5 extend; the secondary beam list value, which represents the configuration of the secondary beam arrangement; and the primary secondary beam placement position definition coefficient, which defines the placement position of the primary secondary beams. That is, the proposed arrangement P includes the primary secondary beam extension direction, the secondary beam list value, and the primary secondary beam placement position definition coefficient. In this embodiment, the proposed layout P includes at least one primary beam 5. The layout P may also include only the primary beam 5 and omit the secondary beam 6. Alternatively, the floor beam design support device 10 may be configured to propose a layout P that does not include any beams 4.

[0017] The primary beam extension direction indicates the direction in which the primary beam 5 extends. The primary beam extension direction takes the value of either the first horizontal direction H1 or the second horizontal direction H2. In Figure 2, the primary beam extension direction is the second horizontal direction H2. Also, in Figure 3, the primary beam extension direction is the first horizontal direction H1.

[0018] The numerical values ​​listed for the secondary beams represent arrangement pattern A of the secondary beams 4. Arrangement pattern A indicates how many primary secondary beams 5 are provided, and how many secondary secondary beams 6 are provided between the main beams 3 and the primary secondary beams 5, and between the primary secondary beams 5 themselves, thereby showing the overall arrangement (arrangement pattern) of the secondary beams 4. The numerical values ​​for the secondary beams are formed by listing the first number corresponding to the primary beam 5 and the second number corresponding to the secondary beam 6, in the order in which either the primary beam 5 or the secondary beam 6 appears, when viewing the arrangement of the secondary beams 4 from one side DO1 to the other side DO2 in the primary beam intersection direction DO (i.e., the first horizontal direction H1 in Figure 2, the second horizontal direction H2 in Figure 3), where the secondary beam 6 extends from intersecting the primary beam 5.

[0019] For example, in the example in Figure 2, the primary beam 5 extends in the second horizontal direction H2, and the secondary beam 6 is provided so as to intersect the primary beam 5 and extend in the first horizontal direction H1. Therefore, the primary beam intersection direction DO is the first horizontal direction H1. In this primary beam intersection direction DO, one side DO1 is the left side of the paper in Figure 2, and the other side DO2 is the right side of the paper in Figure 2. In this case, looking at the arrangement of beams 4 from one side DO1 to the other side DO2, beams 4 appear in the order of secondary beam 6A, primary beam 5A, secondary beam 6B, primary beam 5B, and secondary beam 6C. If we list the first number corresponding to the primary beam 5 and the second number corresponding to the secondary beam 6 according to this order, it will be the second number, the first number, the second number, the first number, and the second number. For example, if the first digit is "1" and the second digit is "0", then the binary number "01010" using these two digits can be used as the beam list value to represent the configuration A1 shown in Figure 2. Therefore, the proposed arrangement P1 shown in Figure 2 can be represented by the second horizontal direction H2, which is the direction of extension of the primary beams, the beam listing value "01010" representing the arrangement pattern A1, and the primary beam placement position definition coefficient (for example, 0 in this case), which will be explained later.

[0020] Furthermore, in the example in Figure 3, the primary beam 5 extends in the first horizontal direction H1, and the secondary beam 6 is provided to intersect the primary beam 5 and extend in the second horizontal direction H2, so the primary beam intersection direction DO is the second horizontal direction H2. In this primary beam intersection direction DO, one side DO1 is the lower side of the paper in Figure 3, and the other side DO2 is the upper side of the paper in Figure 3. In this case, looking at the arrangement of beams 4 from one side DO1 to the other side DO2, the beams 4 appear in the order of secondary beam 6D, secondary beam 6D, primary beam 5, secondary beam 6E, secondary beam 6E. If we list the first number corresponding to the primary beam 5 and the second number corresponding to the secondary beam 6 according to this order, it will be the second number, the second number, the first number, the second number, the second number. For example, if the first digit is "1" and the second digit is "0", then the binary number "00100" using these two digits can be used as the beam list value to represent configuration A2 of the arrangement shown in Figure 3. Thus, when viewing the arrangement of the secondary beams 4 from one side DO1 to the other side DO2 in the primary beam intersection direction DO, if multiple secondary beams 6 appear simultaneously, the secondary beam list value is formed by listing the number of secondary beams 6 that appear. Therefore, the proposed arrangement P1 shown in Figure 3 can be represented by the first horizontal direction H1, which is the direction in which the primary beams extend; the beam listing value "00100", which represents the arrangement pattern A2; and the primary beam placement position definition coefficient (in this case, for example, 0), which will be explained later.

[0021] From now on, we will use the value "1" as the first digit and the value "0" as the second digit as examples, but the first digit may be a value other than "1", and the second digit may be a value other than "0".

[0022] Figure 4 shows a third example of the arrangement of secondary beams. In the example shown in Figure 4, two primary beams 5C and 5D are erected between the lower main beam 3B and the upper main beam 3D, extending in the second horizontal direction H2. In the example shown in Figure 4, two secondary beams 6F are installed between the left main beam 3A and the left primary beam 5C, extending in the first horizontal direction H1. Two secondary beams 6G are installed between the right primary beam 5D and the right main beam 3C, also extending in the first horizontal direction H1. No secondary beams 6 are provided between the left primary beam 5C and the right primary beam 5D.

[0023] In the example in Figure 4, the primary beam 5 extends in the second horizontal direction H2, so the primary beam extension direction is the second horizontal direction H2, and the primary beam intersection direction DO is the first horizontal direction H1. In this primary beam intersection direction DO, one side DO1 is the left side of the paper in Figure 4, and the other side DO2 is the right side of the paper in Figure 4. In this case, looking at the arrangement of beams 4 from one side DO1 to the other side DO2, beams 4 appear in the order of secondary beam 6F, secondary beam 6F, primary beam 5C, primary beam 5D, secondary beam 6G, and secondary beam 6G. If we list the first number corresponding to primary beam 5 and the second number corresponding to secondary beam 6 according to this order, we get "001100". By using this value as the beam listing value, we can represent the arrangement A3 shown in Figure 4. Therefore, the arrangement plan P3 shown in Figure 4 can be represented by the second horizontal direction H2, which is the direction of extension of the primary beams, the beam listing value "001100" representing the arrangement pattern A3, and the primary beam placement position definition coefficient (for example, 0 in this case), which will be explained next.

[0024] The primary beam placement position definition coefficient defines the placement position of primary beam 5 in the primary beam intersection direction DO. In this embodiment, for example, in the case of arrangement plan P in which two primary beams 5 are provided as shown in Figure 4, the primary beam placement position definition coefficient has a smaller value the closer the primary beams 5 are to each other and closer together, and a larger value the further apart the primary beams 5 are to each other and further apart. More specifically, for example, if the distances between the main beam 3A located on one side DO1 and the primary beam 5C located on one side DO1, the distance between the primary beam 5C located on one side DO1 and the primary beam 5D located on the other side DO2, and the distance between the primary beam 5D located on the other side DO2 and the main beam 3C located on the other side DO2 are all equal, then the primary beam placement position definition coefficient is set to, for example, "0".

[0025] Figure 5 shows the case where two primary beams are placed close together in the third example shown in Figure 4. In Figure 5, for illustrative purposes, the primary beam 5 in the arrangement plan P4 shown in Figure 4 is shown with a dashed line. In the layout plan P4 shown in Figure 5, two primary beams 5 are installed close together with the minimum distance allowed in the design. Except for the distance between these two primary beams 5, layout plan P4 has the same configuration as layout plan P3 in Figure 4, and both the primary beam extension direction and the beam list values ​​are the same as in layout plan P3. As shown in Figure 5, when two primary beams 5 are placed close together with the minimum design-allowable distance between them, and the primary beams 5 are positioned inward, the primary beam placement position definition coefficient is set to a lower limit value less than "0", for example, "-1". That is, the arrangement plan P4 shown in Figure 5 can be represented by the second horizontal direction H2, which is the primary beam extension direction, the beam listing value "001100" representing the arrangement pattern A3, and the primary beam placement position definition coefficient "-1".

[0026] Furthermore, in a layout P where the two primary beams 5 are located between the positions of the primary beams 5 in layout P3 shown in Figure 4 and the positions of the primary beams 5 in layout P4 shown in Figure 5, for example, the distance between the position of the primary beams 5 in layout P and the position of the primary beams 5 in layout P3, where the primary beam placement position definition coefficient is "0", can be divided by the distance L1 between the position of the primary beams 5 in layout P3 and the position of the primary beams 5 in layout P4, where the primary beam placement position definition coefficient is "-1", i.e., the lower limit, and the resulting negative number can be used as the primary beam placement position definition coefficient.

[0027] Figure 6 shows the case where the two primary beams are spaced far apart in the third example shown in Figure 4. In Figure 6, for illustrative purposes, the primary beam 5 in the arrangement P4 shown in Figure 4 is shown with a dashed line. In the layout plan P5 shown in Figure 6, two primary beams 5 are installed close to the main beam 3, separated by the minimum design-permissible distance. Aside from the distance between these two primary beams 5, layout plan P5 has the same configuration as layout plan P3 in Figure 4, and both the primary beam extension direction and the beam list values ​​are the same as in layout plan P3. As shown in Figure 6, when two primary beams 5 are spaced apart by the maximum allowable distance in the design, and the primary beams 5 are positioned towards the outside, the primary beam placement position definition coefficient is set to an upper limit greater than "0", for example, "1". That is, the arrangement plan P5 shown in Figure 6 can be represented by the second horizontal direction H2, which is the direction in which the primary beams extend, the beam listing value "001100" representing the arrangement pattern A3, and the primary beam placement position definition coefficient "1". In this case, the value of the primary beam placement position definition coefficient, "0," in the arrangement plan P4 shown in Figure 4, is the median value between the lower limit "-1," which is the primary beam placement position definition coefficient for arrangement plan P4 shown in Figure 5, and the upper limit "1," which is the primary beam placement position definition coefficient for arrangement plan P5 shown in Figure 6.

[0028] Furthermore, in a layout P where the two primary beams 5 are located between the positions of the primary beams 5 in layout P3 shown in Figure 4 and the positions of the primary beams 5 in layout P5 shown in Figure 6, for example, the distance between the position of the primary beams 5 in layout P and the position of the primary beams 5 in layout P3, where the primary beam placement position definition coefficient is "0", can be divided by the distance L2 between the position of the primary beams 5 in layout P3 and the position of the primary beams 5 in layout P5, where the primary beam placement position definition coefficient is "1", i.e., the upper limit, and this value can be used as the primary beam placement position definition coefficient.

[0029] Figure 7 shows a fourth example of the arrangement of secondary beams. In the example shown in Figure 7, one primary secondary beam 5 is installed at the center between the left main beam 3A and the right main beam 3C, extending in the second horizontal direction H2 between the lower main beam 3B and the upper main beam 3D. In the example shown in Figure 7, two secondary beams 6 are installed between the left main beam 3A and the primary beam 5, extending in the first horizontal direction H1, and two secondary beams 6 are installed between the primary beam 5 and the right main beam 3C, also extending in the first horizontal direction H1. In this proposed layout P6, the primary beam extension direction is the second horizontal direction H2, and the beam listing value representing the layout configuration A4 is "00100".

[0030] In this embodiment, for example, in the case of arrangement plan P in which one primary beam 5 is provided as shown in Figure 7, the primary beam placement position definition coefficient has a smaller value the closer the primary beam 5 is to one side DO1, as will be explained later using Figure 8, and a larger value the closer the primary beam 5 is to the other side DO2 and the further it is from one side DO1, as will be explained later using Figure 9. More specifically, for example, if the distance between the main beam 3A located on one side DO1 and the primary beam 5, and the distance between the primary beam 5 and the main beam 3C located on the other side DO2 are equal, the primary beam placement position definition coefficient is set to, for example, "0". Therefore, the proposed arrangement P6 shown in Figure 7 can be represented by the second horizontal direction H2, which is the direction of extension of the primary beams, the beam listing value "00100" representing the arrangement pattern A4, and the primary beam placement position definition coefficient "0".

[0031] Figure 8 shows the case in the fourth example shown in Figure 7 where the primary secondary beam is installed in close proximity to one of the main beams. In Figure 8, for illustrative purposes, the primary secondary beam 5 in the arrangement plan P6 shown in Figure 7 is shown with a dashed line. In the layout plan P7 shown in Figure 8, the primary secondary beams 5 are installed close to the main beam 3A on one side DO1, at the minimum spacing permitted by the design. Except for the position of the primary secondary beams 5, layout plan P7 has the same configuration as layout plan P6 in Figure 7, and both the primary secondary beam extension direction and the secondary beam list values ​​are the same as in layout plan P6. As shown in Figure 8, when a single primary beam 5 is positioned close to the main beam 3A on one side DO1, with the minimum design-allowable spacing, and is positioned close to the main beam 3A on one side DO1, the primary beam placement position definition coefficient is set to a lower limit value smaller than "0", for example, "-1". That is, the arrangement plan P7 shown in Figure 8 can be represented by the second horizontal direction H2, which is the primary beam extension direction, the beam listing value "00100" representing the arrangement pattern A4, and the primary beam placement position definition coefficient "-1".

[0032] Furthermore, in a layout P where the primary beam 5 is located between the position of the primary beam 5 in layout P6 shown in Figure 7 and the position of the primary beam 5 in layout P7 shown in Figure 8, for example, the distance between the position of the primary beam 5 in layout P and the position of the primary beam 5 in layout P6 where the primary beam placement position definition coefficient is "0" can be divided by the distance L3 between the position of the primary beam 5 in layout P6 and the position of the primary beam 5 in layout P7 where the primary beam placement position definition coefficient is "-1", i.e., the lower limit, and the result can be used as the primary beam placement position definition coefficient.

[0033] Figure 9 shows the case in the fourth example shown in Figure 7 where the primary secondary beam is installed in close proximity to the other main beam. In Figure 9, for illustrative purposes, the primary secondary beam 5 in the arrangement plan P6 shown in Figure 7 is shown with a dashed line. In the layout plan P8 shown in Figure 9, the primary beam 5 is installed close to the main beam 3C on the other side DO2, at the minimum spacing allowed by the design. Except for the position of the primary beam 5, layout plan P8 has the same configuration as layout plan P6 in Figure 7, and both the primary beam extension direction and the beam list values ​​are the same as in layout plan P6. As shown in Figure 9, when a single primary beam 5 is positioned close to the main beam 3C on the other side DO2, with the minimum design-allowable spacing, and close to the main beam 3A on the other side DO2, the primary beam placement position definition coefficient is set to an upper limit greater than "0", for example, "1". That is, the arrangement plan P8 shown in Figure 9 can be represented by the second horizontal direction H2, which is the primary beam extension direction, the beam listing value "00100" representing the arrangement pattern A4, and the primary beam placement position definition coefficient "1". In this case, the value of the primary beam placement position definition coefficient "0" in the arrangement plan P6 shown in Figure 7 is the median value between the lower limit "-1" of the primary beam placement position definition coefficient in the arrangement plan P7 shown in Figure 8 and the upper limit "1" of the primary beam placement position definition coefficient in the arrangement plan P8 shown in Figure 9.

[0034] Furthermore, in a layout P where the primary beam 5 is located between the position of the primary beam 5 in layout P6 shown in Figure 7 and the position of the primary beam 5 in layout P8 shown in Figure 9, for example, the distance between the position of the primary beam 5 in layout P and the position of the primary beam 5 in layout P6 where the primary beam placement position definition coefficient is "0" can be divided by the distance L4 between the position of the primary beam 5 in layout P6 and the position of the primary beam 5 in layout P8 where the primary beam placement position definition coefficient is "1", i.e., the upper limit, and this value can be used as the primary beam placement position definition coefficient.

[0035] Even when there are three or more primary beams 5, the primary beam placement position definition coefficient can be defined appropriately, in the same manner as described above. For example, when there are three or more odd-numbered primary beams 5, the primary beam placement position definition coefficient can be set as follows: for example, "0" when all primary beams 5 are placed at equal intervals from each other, "-1" when all primary beams 5 are concentrated in the center of the primary beam intersection direction DO, and "1" when one primary beam 5 (located in the middle) is in the center of the primary beam intersection direction DO, and the other primary beams 5 are placed in close proximity to the main beams 3 on one side DO1 and the other side DO2. Furthermore, when there are four or more primary beams 5, the primary beam placement position definition coefficient can be set as follows: for example, "0" when all primary beams 5 are placed at equal intervals from each other; "-1" when all primary beams 5 are concentrated in the center and close together in the primary beam intersection direction DO; and "1" when half of the primary beams 5 are close to the main beam 3 on one side DO1, and the other half of the primary beams 5 are close to the main beam 3 on the other side DO2.

[0036] By using the primary beam extension direction, beam list values, and primary beam placement position definition coefficient as described above, it is possible to represent almost all placement options P (excluding special cases such as when secondary beams 6 are placed at uneven intervals, or when multiple primary beams 5 are placed at uneven intervals that cannot be represented using the primary beam placement position definition coefficient).

[0037] For example, when designing a structure with eight or fewer secondary beams 4 for a given arrangement of main beams 3, there are two possible directions for the primary secondary beam extension: either the first horizontal direction H1 or the second horizontal direction H2.

[0038] Next, regarding the numerical values ​​for the beam listing, the arrangement pattern A, in which eight beams 4 are placed, is expressed as a combination of eight values ​​that can take on two values. The total number of such combinations is 2 to the power of 8, which is 256. Excluding the one case where all beams 4 become secondary beams 6, making it practically impossible to implement and resulting in no beams 4 being placed, we obtain 255. Furthermore, the total number of configurations A in which seven secondary beams 4 are placed is 127, which is obtained by subtracting 1 (representing the cases where no secondary beams 4 can be placed) from 2 to the power of 7. Similarly, the total number of configurations A for the cases of 6 beams, 5 beams, 4 beams, 3 beams, 2 beams, and 1 beam is 63, 31, 15, 7, 3, and 1 beam, respectively. Therefore, when attempting to provide 8 or fewer secondary beams 4 for a given arrangement of main beams 3, the number of secondary beams can take on 502 possible values, which is the sum of the above numbers. In this way, by calculating all possible combinations of the first and second numbers, we can find all the numerical values ​​for the number of secondary beams where secondary beam 4 is placed.

[0039] Furthermore, regarding the primary beam placement position definition coefficient, for example, by obtaining values ​​in increments of 0.1 from the range of -1 to 1, it is possible to obtain 21 different values. Therefore, when attempting to provide eight or fewer secondary beams 4 for a given arrangement of main beams 3, the total number of possible arrangements P would be, for example, 2 × 502 × 21 = 21084. In this way, the layout plan P is expressed to include the primary beam extension direction, the beam list value, and the primary beam placement position definition coefficient. By calculating all combinations of the values ​​included in the layout plan P, namely the primary beam extension direction, the beam list value, and the primary beam placement position definition coefficient, virtually all beam placement patterns can be realized within the floor beam design support system. The floor beam design support system then performs structural calculations and performance evaluations such as construction costs for all layout plans P that have been comprehensively realized in this manner. The system then systematically extracts and proposes layout plans P that achieve the required strength while yielding favorable evaluation results. In this embodiment, as described above, all listed values ​​for secondary beams are calculated for all cases in which secondary beams 4 can be arranged, and all combinations of the primary secondary beam extension direction, secondary beam listed values, and primary secondary beam placement position definition coefficient are calculated. However, it goes without saying that in cases where there are patterns of secondary beam arrangement that do not need to be considered, it is not necessarily required to calculate all listed values ​​for secondary beams, nor is it necessary to calculate all combinations of the primary secondary beam extension direction, secondary beam listed values, and primary secondary beam placement position definition coefficient.

[0040] Figure 10 is a block diagram of the floor beam design support system. The floor beam design support device 10 consists of computer terminals such as a server and a personal computer, and performs the required functions by executing a pre-configured program. Functionally, the floor beam design support device 10 is equipped with an input reception unit 11, a beam arrangement plan generation unit 12, a structural calculation unit 13, and a beam arrangement plan proposal unit 14.

[0041] The input receiving unit 11 accepts input from an input device (not shown) such as a keyboard or mouse for each of the values ​​necessary for designing the arrangement of the secondary beams 4, particularly in structural calculations. The values ​​that the input receiving unit 11 accepts may include, for example, design values ​​required for the column-beam frame 1 (and floor slab 7), such as the length of the floor slab 7 in the first horizontal direction H1 (length of main beams 3B and 3D), the length of the floor slab 7 in the second horizontal direction H2 (length of main beams 3A and 3C), the finishing load, the live load for the floor, the live load for the secondary beams, and the live load for the main beams. Furthermore, the values ​​that the input receiving unit 11 accepts may include, for example, design values ​​required for concrete and reinforcing steel when realizing the floor slab 7, such as the design slab thickness, the type of concrete (e.g., ordinary concrete, high-strength concrete), the design standard strength of the concrete, the air-dry unit weight of the concrete, the direction in which the main reinforcement extends, and the concrete cover thickness of the reinforcement.

[0042] Furthermore, the values ​​that the input receiving unit 11 accepts may include, for example, basic conditions related to beams in general, such as the Young's modulus of steel beams. Furthermore, the values ​​that the input receiving unit 11 accepts may include, for example, values ​​relating to basic conditions concerning the main beam 3, such as the width of the main beam 3 extending in the first horizontal direction H1 and the width of the main beam 3 extending in the second horizontal direction H2. Furthermore, the values ​​that the input receiving unit 11 accepts may include, for example, values ​​relating to basic conditions concerning the primary beam 5, such as the upper limit of the deformation angle of the primary beam 5 and the upper limit of the absolute deflection amount of the primary beam 5. Furthermore, the values ​​that the input receiving unit 11 accepts may include, for example, values ​​relating to basic conditions concerning the secondary beam 6, such as the upper limit of the deformation angle of the secondary beam 6 and the upper limit of the absolute deflection amount of the secondary beam 6. Furthermore, the values ​​that the input receiving unit 11 accepts are, for example, the unit price of concrete (1m 3 (Material and labor costs per unit), unit price of rebar (material and labor costs per ton), unit price of steel frame (material and labor costs per ton), unit price of formwork (1m 2 Includes material and labor costs per unit.

[0043] As previously explained, the beam placement generation unit 12 calculates all possible beam list values ​​that would result in the placement of the beams 4. The beam placement generation unit 12 generates a placement plan P corresponding to each of the calculated beam list values. More specifically, the beam arrangement plan generation unit 12 generates arrangement plans P (for example, 2 × 21 = 42) corresponding to all combinations in this embodiment, for each of the calculated beam list values, of the beam list value, all possible values ​​for the primary beam extension direction (two possibilities: first horizontal direction H1 or second horizontal direction H2), and multiple possible values ​​for the primary beam arrangement position definition coefficient (for example, 21 possibilities). In this embodiment, the beam arrangement plan generation unit 12 generates multiple arrangement plans P, for example, a total of 21,084, by calculating the above arrangement plans P for each of the calculated beam list values ​​(for example, 502 types if there are 8 or fewer beams 4). In this way, the beam arrangement plan generation unit 12 generates multiple arrangement plans P by calculating combinations of the calculated beam list values, the first horizontal direction H1 and the second horizontal direction H2 which are possible values ​​for the primary beam extension direction, and the multiple possible values ​​for the primary beam arrangement position definition coefficient.

[0044] The structural calculation unit 13 evaluates each of the multiple arrangement plans P generated as described above by performing structural calculations when the secondary beams 4 are arranged in accordance with the primary secondary beam extension direction, secondary beam list values, and primary secondary beam placement position definition coefficient of the arrangement plan P, and by calculating the performance of the arrangement plan P, such as the construction cost SC. Figure 11 shows an example of the structural calculation results for the layout plan shown in Figure 4. In the example shown in Figure 11, an H-shaped steel beam measuring 800 × 300 × 14 × 26 mm is selected as the primary secondary beam 5 by the structural calculation unit 13. Similarly, an H-shaped steel beam measuring 346 × 174 × 6 × 9 mm is selected as the secondary secondary beam 6 by the structural calculation unit 13. In the section indicated as V1 in Figure 11, the type and pitch of the selected reinforcement bars for the upper and lower vertical reinforcement bars extending in the first horizontal direction H1 (horizontal direction in the figure), and the upper and lower vertical reinforcement bars extending in the second horizontal direction H2 (vertical direction in the figure), are selected and determined by the structural calculation unit 13.

[0045] In the example shown in Figure 11, as shown as V2, the concrete, reinforcing bars, steel frames, and formwork required to realize the layout plan P are each 1m 2 The unit cost (quantity) per unit is calculated by the structural calculation unit 13. The structural calculation unit 13 multiplies the unit cost calculated as described above with the unit cost of materials and labor received by the input reception unit 11 for each material, so that it is shown as V3, which is 1m 2 The unit price is calculated per meter. The structural calculation unit 13 further totals the unit prices of each of these materials to determine the required price per meter for all materials. 2 The unit price per area is calculated as the construction cost (SC). In this embodiment, for example, for layout plan P which has strength problems, such as when the deflection of a part of the floor slab 7 exceeds the design conditions, the construction cost SC may not be calculated.

[0046] In this manner, the structural calculation unit 13 performs structural calculations for each of the beam arrangement plans P generated by the beam arrangement plan generation unit 12 (for example, 21,084 plans) based on the information input in the input reception unit 11, and evaluates all of the arrangement plans P, or those arrangement plans P that do not have any strength issues. Furthermore, the structural calculations performed in the structural calculation unit 13 are not limited to conventional, general structural calculation methods based on mechanics, but may also be performed using other methods such as machine learning models. Furthermore, in this embodiment, the structural calculation unit 13 performs structural calculations and calculates and evaluates construction costs SC. However, the structural calculation unit 13 may also perform structural calculations and evaluate other performance aspects besides construction costs SC, such as deformation performance. Moreover, the performance aspects to be evaluated may be not limited to one type, but may be multiple types.

[0047] The beam arrangement proposal unit 14 selects one or more arrangements P from among the multiple arrangements P generated by the beam arrangement generation unit 12 that have good evaluation results calculated by the structural calculation unit 13, and displays them on an output device not shown, such as a display, to propose a beam arrangement P for the beams 4 that satisfies the required strength and yields the best evaluation results, such as construction cost SC. Figure 12 shows an example of the output of the floor beam design support device. As shown in Figure 12, the floor beam design support device 10 may extract and display, in order from smallest to largest construction cost SC, several other layout options P that result in the next smallest and best construction cost SC, in addition to the layout option P that results in the smallest and best construction cost SC.

[0048] Next, the floor beam design support method using the floor beam design support device 10 described above will be explained using Figures 1 to 12 and Figure 13. Figure 13 is a flowchart of the floor beam design support method. First, the input receiving unit 11 receives input from an input device (not shown) such as a keyboard or mouse for each of the values ​​necessary for designing the arrangement of the secondary beams 4, particularly in structural calculations (step S11). Next, the beam arrangement generation unit 12 calculates all possible beam list values ​​for the placement of the beams 4, as previously explained. The beam arrangement generation unit 12 generates multiple arrangement plans P by calculating combinations of the calculated beam list values, the first horizontal direction H1 and the second horizontal direction H2 which are possible values ​​for the primary beam extension direction, and the multiple possible values ​​for the primary beam placement position definition coefficient (step S12). The structural calculation unit 13 evaluates each of the multiple arrangement plans P generated as described above by performing a structural calculation when the secondary beams 4 are arranged in accordance with the primary secondary beam extension direction, secondary beam list value, and primary secondary beam placement position definition coefficient of the arrangement plan P (step S13). The beam arrangement proposal unit 14 extracts the beam arrangement P with a favorable evaluation result calculated by the structural calculation unit 13 from among multiple beam arrangement proposals P generated by the beam arrangement proposal generation unit 12, and displays it on an output device (not shown) such as a display, thereby proposing a beam arrangement proposal P for the beams 4 that satisfies the required strength and has a favorable evaluation result (step S14).

[0049] The floor beam design support device 10 described above is a floor beam design support device 10 that assists in the design of floor slabs 7 and secondary beams 4 that support floor slabs 7, wherein the secondary beams 4 are designed to include primary secondary beams 5 that are erected between main beams 3 surrounding the floor slabs 7, and when viewing the arrangement of the secondary beams 4 from one side DO1 to the other side DO2 in the primary secondary beam intersection direction DO that intersects the primary secondary beams 5, the first number corresponding to the primary secondary beam 5 and the second number corresponding to the secondary secondary beam 6 appear in the order in which either the primary secondary beam 5 and the secondary secondary beams 6 that are erected between the primary secondary beams 5 and the main beams 3 or between the primary secondary beams 5 appear, and so on. The system includes: a beam arrangement generation unit 12 which generates an arrangement P corresponding to each of the calculated beam arrangement values, and a beam arrangement generation unit 13 which evaluates each of the generated arrangement P by performing structural calculations when the beams are arranged to correspond to the beam arrangement values ​​included in the arrangement P, and a beam arrangement proposal unit 14 which extracts and proposes the arrangement P with good evaluation results. According to the above configuration, the secondary beams 4 are designed to include primary secondary beams 5 that are erected between the main beams 3 surrounding the floor slab 7. When viewing the arrangement of the secondary beams 4 from one side DO1 to the other side DO2 in the primary secondary beam intersection direction DO that intersects the primary secondary beams 5, the arrangement of the secondary beams 4 is represented by a secondary beam list number formed by listing a first number corresponding to the primary secondary beam 5 and a second number corresponding to the secondary secondary beam 6, in the order in which either the primary secondary beam 5 or the secondary secondary beam 6 erected between the primary secondary beam 5 and the main beam 3 or between the primary secondary beams 5 appear. For example, an arrangement of secondary beams A in which two primary secondary beams 5 are provided in parallel can be represented by a secondary beam list number formed by listing two first numbers. Furthermore, a beam arrangement configuration A, consisting of one primary beam 5, two secondary beams installed between the main beam 3 and the primary beam 5 on one side DO1 in the primary beam intersection direction DO from the primary beam 5, and one secondary beam installed between the main beam 3 and the primary beam 5 on the other side DO2 in the primary beam intersection direction DO from the primary beam 5, can be represented by a beam list value formed by listing four numbers: a second number, a second number, a first number, and a second number. In this way, by using the beam list value described above, basically all beam arrangement configurations A can be represented in binary. Using these beam list values, the beam arrangement generation unit 12 calculates all possible beam list values ​​in which beams can be placed. This can be easily achieved, for example, by combining the first and second numbers in a brute-force manner and excluding beam list values ​​in which beam 4 is not placed. The beam arrangement generation unit 12 then generates arrangement plans P corresponding to each of the calculated beam list values. Furthermore, the structural calculation unit 13 evaluates each of the generated arrangement plans P by performing a structural calculation when the beams are placed in accordance with the beam list values ​​included in that arrangement plan P. In this way, arrangement plans P are generated comprehensively and brute-force, and then each arrangement plan P is evaluated. Therefore, the arrangement plans P proposed by the beam arrangement proposal unit 14 that have a good evaluation result are the arrangement plans P with the best evaluation result among all arrangement types A. In this way, by proposing a proposed arrangement P for the secondary beams 4, which yields favorable evaluation results, it becomes possible to support the design of floor secondary beams.

[0050] Furthermore, the beam arrangement generation unit 12 calculates all possible combinations of the first and second numbers to determine all the numerical values ​​for the beams where the beams 4 will be placed. Furthermore, the layout plan P includes, in addition to the numerical values ​​of the secondary beams, the primary secondary beam extension direction, which indicates whether the primary secondary beam 5 extends in the first horizontal direction H1 or the second horizontal direction H2 where the main beam 3 extends intersecting each other, and a primary secondary beam placement position definition coefficient, which defines the placement position of the primary secondary beam 5 in the primary secondary beam intersection direction DO. The secondary beam layout plan generation unit 12 generates the layout plan P by calculating all combinations of the calculated numerical values ​​of all the secondary beams, the first horizontal direction H1 and the second horizontal direction H2 which are possible values ​​for the primary secondary beam extension direction, and the multiple possible values ​​for the primary secondary beam placement position definition coefficient. Furthermore, when viewing the arrangement of the secondary beams 4 from one side DO1 to the other side DO2 in the first horizontal direction, if multiple secondary beams 6 appear simultaneously, the secondary beam list value is formed by listing the second number for each secondary beam 6 that appears. With the above configuration, the floor beam design support device 10 can be properly realized.

[0051] (Second Embodiment) Next, a second embodiment will be described. The floor beam design support device of this embodiment, like the floor beam design support device 10 of the first embodiment, supports the design of floor slabs and beams that support floor slabs. The floor beam design support device 10 of the first embodiment represents the beam arrangement plan P including the primary beam extension direction, the beam list value, and the primary beam placement position definition coefficient, and generates all possible arrangement plans P in which the beams 4 are placed, and performs structural calculations for each of them to propose an arrangement plan P with good evaluation results. In contrast, the floor beam design support device of this embodiment uniquely determines an arrangement plan A with good evaluation results from the specifications of the floor slab to be designed, based on a beam arrangement pattern area map that expresses the correspondence between the floor slab specifications and arrangement patterns A that result in good evaluation results regarding performance such as construction cost SC.

[0052] Figure 14 is a block diagram of the floor beam design support device of this embodiment. The floor beam design support device 20 consists of computer terminals such as a server and a personal computer, and performs the required functions by executing a pre-configured program. Functionally, the floor beam design support device 20 is equipped with an input reception unit 21, a beam configuration acquisition unit 22, a structural calculation unit 23, a beam arrangement proposal unit 24, and a beam arrangement configuration area map 30.

[0053] In the following, using Figure 15, we will explain a configuration A5 of the beams 4 that is different from configurations A1 to A4 described in the first embodiment. Then, we will explain the beam configuration region map 30 and the method for creating the beam configuration region map 30 in order. Figure 15 shows a fifth example of the arrangement of secondary beams. In the example shown in Figure 15, three primary beams 5 are installed between the lower main beam 3B and the upper main beam 3D, extending in the second horizontal direction H2. In the example shown in Figure 15, no secondary beams 6 are provided. Furthermore, the three primary beams 5 are positioned such that the distance between them and the main beams 3A and 3C, and the distance between each other, are equal. In other words, each of the multiple primary beams 5 is positioned at an equal distance from the others. Therefore, the arrangement plan P9 shown in Figure 15 can be represented by the second horizontal direction H2, which is the direction of extension of the primary beams, the beam listing value "111" representing the arrangement pattern A5, and the primary beam placement position definition coefficient "0".

[0054] Hereafter, arrangement A, as shown in Figure 15, in which multiple primary beams 5 are arranged at equal distances from each other and no secondary beams 6 are provided, will be referred to as equal arrangement, regardless of the number of primary beams 5. Furthermore, when written as equal arrangement (n) where n is a positive integer, it means equal arrangement when there are n primary beams 5. For example, arrangement A5 in Figure 15 is equal arrangement (3). Furthermore, arrangement A, as shown in Figure 7, in which one primary beam 5 is provided in the center and the same number of secondary beams 6 are arranged on both sides of it at equal distances from each other in the direction of the primary beam's extension, is called a skein-type arrangement, regardless of the number of secondary beams 6. Also, when it is written as skein-type arrangement (n) with n as a positive integer, it means a skein-type arrangement in which the number of secondary beams 6 provided on one side of the primary beam 5 is n. For example, arrangement A4 in Figure 7 is a skein-type arrangement (2).

[0055] Figure 16 shows an example of a beam arrangement pattern area map. The beam arrangement pattern area map 30 is configured such that each of the one or more indicators relating to the floor slab is an axis. In particular, in this embodiment, the beam arrangement pattern area map 30 is configured in two dimensions such that the first indicator and the second indicator are mutually orthogonal first and second axes. The beam arrangement pattern area map 30 is configured such that the first indicator becomes the first axis (X axis) 31 extending in the horizontal direction, and the second indicator becomes the second axis (Y axis) 32 extending in the vertical direction. One or more indicators, namely the first and second indicators in this embodiment, are selected from the length of the long side of the floor slab 7, the side length ratio (the value obtained by dividing the length of the short side of the floor slab 7 by the length of the long side), the live load of the floor slab 7, and the slab thickness of the floor slab 7. In this embodiment, the first indicator is the length of the long side of the floor slab 7, and the second indicator is the side length ratio. Needless to say, other types of indicators, such as concrete strength, may also be selected as the first and second indicators. Furthermore, the number of axis indicators may be one or three or more. In other words, the beam arrangement pattern region map 30 may be represented in one dimension or in three or more dimensions.

[0056] The beam arrangement pattern area map 30 divides the coordinate space 33 formed by the first axis 31 and the second axis 32 into regions corresponding to each of several arrangement patterns A for the beams 4. In the example of the beam arrangement pattern area map 30 shown in Figure 16, the coordinate space 33 is divided into regions corresponding to each of the seven types of arrangement patterns A: uniform arrangement (4), uniform arrangement (5), uniform arrangement (6), uniform arrangement (7), uniform arrangement (8), skein arrangement (2), and skein arrangement (3).

[0057] In this embodiment, the coordinate space 33 of the beam arrangement pattern area map 30 is divided into areas such that each coordinate in the coordinate space 33 belongs to the area corresponding to Pattern A which yields the best evaluation result regarding construction cost SC when the first indicator and the second indicator are set to the coordinate value of that coordinate. For example, coordinate PO1, which corresponds to (20, 0.2) in coordinate space 33, belongs to the region of uniform arrangement (6). This indicates that when constructing a floor slab 7 such that the coordinate values ​​20 and 0.2 corresponding to coordinate PO1 are set as the length in the long side direction and the side length ratio, respectively, the arrangement of the secondary beams 4 that yields the best evaluation result regarding construction cost SC is uniform arrangement (6). Similarly, the coordinate PO2 corresponding to (12, 0.3) in coordinate space 33 belongs to the region of equal distribution (4). This indicates that when constructing a floor slab 7 such that the coordinate values ​​12 and 0.3 corresponding to the coordinate PO2 are set as the length in the long side direction and the side length ratio, respectively, the arrangement of the secondary beams 4 that yields the best evaluation result regarding construction cost SC is the equal distribution (4). Furthermore, the coordinate PO3 corresponding to (16, 0.8) in coordinate space 33 belongs to the region of the skein-shaped arrangement (3). This indicates that when constructing a floor slab 7 such that the coordinate values ​​16 and 0.8 corresponding to the coordinate PO3 are set as the length in the long side direction and the side length ratio, respectively, the arrangement of the secondary beams 4 that yields the best evaluation result regarding construction cost SC is the skein-shaped arrangement (3).

[0058] Multiple beam arrangement pattern area maps 30 are provided. That is, the floor beam design support device 20 includes other beam arrangement pattern area maps 30 in addition to the beam arrangement pattern area map 30 shown in Figure 16. Each of these multiple beam arrangement pattern area maps 30 has the same first and second indicators. In other words, in all beam arrangement pattern area maps 30, the first indicator is the length in the long side direction of the floor slab 7, and the second indicator is the side length ratio. In each of the multiple beam arrangement pattern area maps 30, the indicators that are not selected as the first and second indicators among the length in the long side direction, side length ratio, live load, and slab thickness are set to a different constant value for each beam arrangement pattern area map 30. In this embodiment, the indicators that are not selected as the first and second indicators are the live load and the slab thickness. Multiple beam arrangement pattern area maps 30 are provided to correspond to each of the combinations of the multiple values ​​that the live load can take and the multiple values ​​that the slab thickness can take. For example, the beam arrangement pattern area map 30 shown in Figure 16 corresponds to the case where the live load and the slab thickness each take specific values. If the number of possible values ​​for the live load is, for example, A, and the number of possible values ​​for the slab thickness is, for example, B, then there will be A × B number of beam arrangement pattern area maps 30.

[0059] By using such multiple beam arrangement pattern area maps 30, when the length in the long side direction, the ratio of the side lengths, the live load, and the slab thickness of the floor slab 7 are specified, a beam arrangement pattern area map 30 corresponding to the specified combination of live load and slab thickness values ​​can be selected from the multiple beam arrangement pattern area maps 30. For the selected beam arrangement pattern area map 30, the area containing coordinates whose coordinate values ​​are the specified length in the long side direction and the ratio of the side lengths can be identified, and the beam arrangement pattern A corresponding to that area can be identified. In this way, for example, based on the specifications of the floor slab 7 in which the arrangement of the secondary beams 4 is to be designed, the length in the long direction, the ratio of the sides, the live load, and the slab thickness are determined, and by applying the determined length in the long direction, the ratio of the sides, the live load, and the slab thickness to multiple secondary beam arrangement mode area maps 30, it is possible to derive arrangement mode A of the secondary beams 4 that yields the best evaluation result regarding construction cost SC when the determined length in the long direction, the ratio of the sides, the live load, and the slab thickness are specified.

[0060] Next, a method for creating the multiple beam arrangement pattern region maps 30 described above will be explained. In this embodiment, the beam arrangement pattern region maps 30 are created by constructing a response surface with the length in the long side direction, the side length ratio, the live load, and the slab thickness as explanatory variables and the construction cost SC as the objective variable. The response surface is constructed individually for each arrangement pattern A, corresponding to the arrangement pattern A of the secondary beams 4. In this embodiment, response surfaces are constructed corresponding to each of the uniform arrangement (1) to uniform arrangement (8) and each of the skein arrangement (1) to skein arrangement (3). Similarly, response surfaces may be constructed for other types of arrangement patterns A, such as those shown in Figures 2 and 4, in addition to the uniform and skein arrangements.

[0061] Each of the response surfaces corresponding to the equal distribution (1) to equal distribution (8) can be constructed, for example, by including the number of primary beams, which is the number of primary beams 5, as an explanatory variable, constructing a single response surface for the equal distribution, which is the equal distribution response surface, and then substituting each of the values ​​from 1 to 8 for the number of primary beams in this equal distribution response surface. In such a uniformly distributed response surface, the explanatory variables can be the primary beam extension direction, the number of primary beams, the length of the long side of the floor slab 7, the ratio of the side lengths of the floor slab 7, the live load, and the slab thickness. The primary beam extension direction is one of two values: the first horizontal direction H1 or the second horizontal direction H2. The number of primary beams is an integer between 1 and 8. In this embodiment, the length of the long side is, for example, a value between 10 and 26 (a continuous variable). In this embodiment, the ratio of the side lengths is, for example, a value between 0.1 and 1.0 (a continuous variable). In this embodiment, the live load is, for example, a value between 1.8 and 17.5 (a continuous variable). In this embodiment, the slab thickness is, for example, a value that is a multiple of 5 in the range of 150 to 300.

[0062] In this embodiment, the dependent variable is the construction cost SC. In this embodiment, when a value is set for each of the explanatory variables, the floor designed to correspond to that value is 1m 2 The unit price per unit is the construction cost SC, which is the dependent variable. Thus, the uniformly distributed response surface of this embodiment is represented as a surface in 7-dimensional space by taking the six explanatory variables described above as inputs and one objective variable as an output.

[0063] The uniformly distributed response surface is constructed based on training data. The training data can be created by generating combinations of possible values ​​for each of the explanatory variables: the extension direction of the primary beams, the number of primary beams, the length of the long side of the floor slab 7, the ratio of the side lengths of the floor slab 7, the live load, and the slab thickness. The construction cost SC required when designing a floor using the generated combination of values ​​is then calculated using structural calculations and associated with these combinations. Multiple training datasets are created. When creating multiple training datasets, the combinations of values ​​can be generated randomly using the Monte Carlo method, but it is more desirable to generate them using methods such as the Equal Latin Hypersquare method, as this allows for the acquisition of values ​​evenly and the generation of combinations. Furthermore, when creating multiple training datasets, it is desirable to include all combinations of the upper and lower bounds of each explanatory variable in the training dataset. In the uniformly distributed response surface of this embodiment, since there are 6 explanatory variables, the total number of combinations of upper and lower bounds is 2 to the power of 6, or 64.

[0064] Using the training data created as described above, a uniformly distributed response surface is constructed. Figure 17 shows an example of a uniform arrangement response surface corresponding to the arrangement of beams with uniform distribution as shown in Figure 15 as the fifth example above. In this embodiment, the uniform arrangement response surface is represented as a surface in 7-dimensional space as described above, but in Figure 17, it is represented as a surface in 3-dimensional space with the number of primary beams as the X axis, the slab thickness as the Y axis, and the objective variable as the Z axis. In Figure 17, the values ​​of the explanatory variables other than the number of primary beams and the slab thickness are fixed values. Equally distributed response surfaces can be generated by various methods, such as multilayer perceptrons and Shepard-K-nearest neighbor methods. Therefore, it is desirable to generate multiple equally distributed response surfaces using the above-mentioned methods and select one from among them in which the construction cost SC, which is the objective variable, is an appropriate value. In particular, the construction cost SC, which is the objective variable, cannot be a negative number. Therefore, for example, the absence of regions where the objective variable is a negative number can be used as a selection criterion for equally distributed response surfaces. In the uniformly distributed response surface constructed in this way, by fixing the number of primary beams to values ​​from 1 to 8, response surfaces corresponding to each of the uniformly distributed (1) to (8) configurations can be obtained.

[0065] Furthermore, in the construction cost SC, which is the objective variable in this embodiment, a penalty is applied so that if a structural problem is considered to occur when designing the floor based on the combination of values ​​input for the explanatory variables, the value will be larger than when no structural problem is considered to occur. Specifically, the penalty is imposed as follows. The floor slab 7 can be divided into a plurality of regions by the secondary joists 4. For example, in the equal arrangement (3) shown in FIG. 15, the floor slab 7 can be divided into four regions by three secondary joists 4. As already described, when creating the training data, for each combination of values that can be set for each explanatory variable, a structural calculation is performed to calculate the unit price per 1 m 2 By calculating the unit price per area, the value of the construction cost SC as the objective variable can be obtained. As a result of this structural calculation, if there is a region in which the deflection exceeds the design conditions among the plurality of regions, a value obtained by multiplying the number of regions that exceed the design conditions by a certain value is added to the calculated unit price per 1 m 2 By adding it to the unit price per area, a penalty can be imposed on the construction cost SC as the objective variable.

[0066] The above-mentioned certain value can be, for example, 100,000 yen. The actual unit price per 1 m of the floor secondary joists 2 Generally has a value of about 50,000 yen or less. Therefore, if an equal arrangement response surface is constructed such that the above-mentioned penalty is imposed on the objective variable, by determining whether the value of the objective variable when a certain combination of values is input to the explanatory variable is, for example, 100,000 yen or more, it is possible to easily determine whether a deflection exceeding the design conditions will occur in the floor slab 7 when designing using the combination of values.

[0067] For each of the tandem arrangements (1) to (3), the response surface corresponding to each can be constructed by including the number of secondary joists, which is the number of secondary joists 6 provided on one side of the primary joist 5, as an explanatory variable, and substituting each value from 1 to 3 into the number of primary joists of this tandem arrangement response surface. The response surface for a skein-shaped arrangement can be constructed in the same way as the response surface for a uniformly arranged arrangement described above. In this case, the explanatory variables can be the direction of extension of the primary beams, the number of secondary beams as described above, the length of the long side of the floor slab 7, the ratio of the side lengths of the floor slab 7, the live load, and the slab thickness. The number of secondary beams is an integer between 1 and 3. In the example in Figure 7, the number of secondary beams is 2. The objective variable is the construction cost SC, similar to the uniformly distributed response surface. In this embodiment, when a value is set for each of the explanatory variables, the floor joists designed to correspond to that value are 1m 2 The unit price per unit is the construction cost SC, which is the dependent variable. The skein-type response surface is constructed using multiple training datasets, similar to the uniformly distributed response surface. In the skein-type arrangement response surface constructed as described above, by fixing the number of secondary beams to values ​​from 1 to 3, response surfaces corresponding to each of the skein-type arrangements (1) to skein-type arrangements (3) can be obtained.

[0068] Figure 18 shows the response surfaces for uniform arrangement when the number of primary beams is fixed to values ​​from 1 to 8. In other words, Figure 18 shows the response surfaces corresponding to uniform arrangement (1) to uniform arrangement (8). Figure 19 shows the response surfaces for skein arrangement when the number of secondary beams is fixed to values ​​from 1 to 3. In other words, Figure 19 shows the response surfaces corresponding to skein arrangement (1) to skein arrangement (3). In Figures 18 and 19, the X-axis represents the length of the long side of the floor slab 7, which is the first indicator (first axis 31) of the beam arrangement pattern area map 30, and the Y-axis represents the side length ratio, which is the second indicator (second axis 32) of the beam arrangement pattern area map 30. In Figures 18 and 19, the primary beam extension direction, live load, and slab thickness are fixed values. Also, in Figures 18 and 19, the construction cost SC, which is the objective variable, is only plotted up to an amount that can be considered a realistic upper limit, and the portion above that amount is left blank.

[0069] Furthermore, it is conceivable that all configurations of configuration A could be represented by a single response surface by adopting the numerical values ​​of the beam list in the first embodiment (for example, converted to decimal) as one of the explanatory variables, and by using configuration A itself as an explanatory variable. Here, for example, in the case of slab thickness among the explanatory variables, there is a tendency for the construction cost SC, which is the dependent variable, to increase as the slab thickness increases, and to decrease as the slab thickness decreases. Thus, for each explanatory variable, the relative magnitudes of its values ​​are required to be meaningful. In contrast, the beam list values ​​are simply numerical values ​​associated with arrangement pattern A, and the relative magnitudes of the values ​​that the beam list values ​​can take are not meaningful. Therefore, even if such beam list values ​​are used as explanatory variables, it is difficult to construct a good response surface. From this perspective, in this embodiment, a response surface is constructed corresponding to each of the configurations A of the arrangement.

[0070] Using the multiple response surfaces generated as described above, a total of 11 response surfaces corresponding to the uniformly arranged (1) to uniformly arranged (8) and the skein-shaped arrangement (1) to skein-shaped arrangement (3) in this embodiment, a beam arrangement pattern region map 30 is generated. Specifically, for each coordinate in the coordinate space 33, a response surface that yields the best evaluation results for construction cost SC, etc., when the first index (length in the long side direction) and the second index (side length ratio) are set to the coordinate value of that coordinate is extracted from the response surfaces corresponding to uniform arrangement (1) to uniform arrangement (8) and the response surfaces corresponding to skein arrangement (1) to skein arrangement (3). The coordinate space 33 is then divided into multiple regions such that the coordinate belongs to the region of configuration A corresponding to the extracted response surface, thereby forming the beam arrangement configuration region map 30. As already explained, multiple beam arrangement mode region maps 30 are generated to correspond to each of the combinations of multiple possible values ​​for the live load and multiple possible values ​​for the slab thickness.

[0071] Using this beam arrangement pattern region map 30, the floor beam design support device 20 assists in the design of the beams 4. The input receiving unit 21 accepts input from input devices (not shown) such as a keyboard or mouse for each of the values ​​necessary for designing the arrangement of the secondary beams 4, particularly in structural calculations. The input receiving unit 21 accepts input values ​​for each of the following: the length of the long side of the floor slab 7, the ratio of the side lengths of the floor slab 7, the live load, and the slab thickness. The input receiving unit 21 may instead accept the value of the shorter side length of the floor slab 7 as input, and calculate the side length ratio from the longer side length and the shorter side length. In this way, the input receiving unit 21 receives the values ​​of the first indicator, i.e., the length in the long side direction, and the second indicator, i.e., the side length ratio. The input receiving unit 21 also receives the values ​​of the slab thickness and the load.

[0072] The beam configuration acquisition unit 22 selects a beam configuration region map 30 from a plurality of beam configuration region maps 30, each of which is prepared for each combination of live load value and slab thickness value, that corresponds to the specified live load value and the specified slab thickness value. The beam configuration acquisition unit 22 acquires configuration A from the selected beam configuration region map 30, which corresponds to the region to which the coordinates whose coordinate values ​​are the values ​​specified in the first and second indicators belong. For example, in the beam configuration region map 30 shown in Figure 16, if the length in the long side direction is specified as 20 and the side length ratio as 0.2, the coordinate PO1 whose coordinate values ​​are these values ​​belongs to the region corresponding to equal configuration (6). Therefore, equal configuration (6) is acquired as configuration A that minimizes the construction cost SC.

[0073] The structural calculation unit 23 evaluates the proposed layout P by performing structural calculations on the layout plan P in which the secondary beams 4 are arranged according to the arrangement pattern A obtained in the secondary beam pattern acquisition unit 22, and by calculating the construction cost SC, etc. The beam arrangement proposal unit 24 displays the arrangement proposal P along with the calculated construction cost SC and other evaluation results on an output device not shown in the diagram, such as a display, and proposes the beam arrangement proposal P that satisfies the required strength and yields the best evaluation results for construction cost SC and other evaluation results.

[0074] Next, Figure 20 will be used to explain the floor beam design support method using the floor beam design support device 20 described above. Figure 20 is a flowchart of the floor beam design support method. First, the input receiving unit 21 receives input via an input device (not shown) such as a keyboard or mouse for each of the values ​​necessary for designing the arrangement of the secondary beams 4, particularly in structural calculations (step S21). The input receiving unit 21 receives the values ​​of the first indicator, i.e., the length in the long side direction, and the second indicator, i.e., the side length ratio. The input receiving unit 21 also receives the values ​​of the slab thickness and the live load. The beam configuration acquisition unit 22 selects a beam configuration area map 30 from a plurality of beam configuration area maps 30, each of which is prepared for each combination of live load value and slab thickness value, that corresponds to the specified live load value and the specified slab thickness value. From the selected beam configuration area map 30, the beam configuration acquisition unit 22 acquires configuration A corresponding to the area to which the coordinates whose coordinate values ​​are the values ​​specified in the first index and the second index belong (step S22). The structural calculation unit 23 performs structural calculations on the proposed layout P in which the secondary beams 4 are arranged according to the arrangement pattern A obtained in the secondary beam pattern acquisition unit 22, and evaluates the proposed layout P by calculating the construction cost SC, etc. (step S23). The beam arrangement proposal unit 24 displays the arrangement P along with the calculated construction cost SC on an output device not shown in the diagram, such as a display, and proposes an arrangement P for the beams 4 that satisfies the required strength and yields the best evaluation results for the construction cost SC, etc. (Step S24).

[0075] The floor beam design support device 20 described above is a floor beam design support device 20 that supports the design of a floor slab 7 and a beam 4 that supports the floor slab 7, and includes a beam arrangement pattern area map 30 in which a coordinate space 33 formed with each of one or more indicators relating to the floor slab 7 as axes 31, 32 is divided into areas corresponding to each of a plurality of patterns A relating to the arrangement of the beam 4, and the coordinate space 33 of the beam arrangement pattern area map 30 is divided into areas such that each coordinate on the coordinate space 33 belongs to the area corresponding to the pattern A to which the evaluation is best when each of the indicators is set to the coordinate value of that coordinate, and includes a beam pattern acquisition unit 22 that acquires a pattern A from the beam arrangement pattern area map 30 to which the coordinate whose coordinate value is the value specified for each of the indicators belongs when a value is specified for each of the indicators, a structural calculation unit 23 that performs structural calculations on an arrangement plan P in which the beam 4 is arranged according to the acquired pattern A and evaluates the arrangement plan P, and a beam arrangement plan proposal unit 24 that proposes an arrangement plan P along with the evaluation result. With the above configuration, the beam arrangement pattern area map 30 is formed by dividing the coordinate space 33, which is formed with each of the one or more indicators related to the floor slab 7 as axes 31 and 32, into regions corresponding to each of the multiple patterns A related to the arrangement of the beams 4. The coordinate space 33 of the beam arrangement pattern area map 30 is divided into regions such that each coordinate on the coordinate space 33 of the beam arrangement pattern area map 30 belongs to the region corresponding to the pattern A that yields the best evaluation when each indicator is set to the coordinate value of that coordinate. Using such a beam arrangement pattern area map 30, when designing the floor slab 7, by specifying the values ​​determined for each of the indicators, it is possible to determine which of the multiple regions dividing the coordinate space 33 of the beam arrangement pattern area map 30 the coordinate values ​​of the coordinates that have each of the specified values ​​as their coordinate values ​​belong to, and by obtaining the beam arrangement pattern A of the beams 4 that corresponds to the region to which the coordinates have been determined to belong, it is possible to find the beam arrangement pattern A of the beams 4 that yields the best evaluation when realizing the floor slab 7 to be designed. Based on this idea, when a value is specified for each of the indicators, the beam configuration acquisition unit 22 acquires configuration A from the beam configuration region map 30 that corresponds to the region to which the coordinates whose coordinate values ​​are the values ​​specified for each of the indicators belong. The structural calculation unit 23 performs a structural calculation on the configuration plan P in which the beams 4 are arranged according to the acquired configuration A and evaluates the configuration plan P. The beam configuration plan proposal unit 24 proposes the configuration plan P that yields the best evaluation, along with the evaluation results. In this way, by proposing a proposed arrangement P for the secondary beams 4, which yields favorable evaluation results, it becomes possible to support the design of floor secondary beams.

[0076] In particular, the floor beam design support device 20 in this embodiment is a floor beam design support device 20 that supports the design of a floor slab 7 and a beam 4 that supports the floor slab 7, and comprises a beam arrangement pattern region map 30 in which a coordinate space 33 formed by the first axis 31 and the second axis 32 is divided into regions corresponding to each of a plurality of patterns A regarding the arrangement of the beam 4, and each coordinate on the coordinate space 33 is the first index and the second index are The coordinate space 33 of the beam arrangement pattern area map 30 is divided into areas such that the evaluation is best when the coordinate values ​​of the coordinates are set accordingly. The beam arrangement pattern acquisition unit 22 acquires a beam arrangement pattern A from the beam arrangement pattern area map 30 that corresponds to the area to which the coordinates whose coordinate values ​​are the values ​​specified in the first and second indicators belong when values ​​are specified in each of the first and second indicators. The structural calculation unit 23 performs structural calculations on the arrangement plan P in which the beams 4 are arranged according to the acquired pattern A and evaluates the arrangement plan. The beam arrangement plan proposal unit 24 proposes the arrangement plan P along with the evaluation results. With the above configuration, the beam arrangement pattern area map 30 is formed by using a first and second indicator selected from the length of the long side of the floor slab 7, the side length ratio which is the value obtained by dividing the length of the short side of the floor slab 7 by the length of the long side, the live load of the floor slab 7, and the slab thickness of the floor slab 7 as mutually orthogonal first axes 31 and second axes 32, and dividing the coordinate space 33 formed by the first axis 31 and second axis 32 into regions corresponding to each of the multiple patterns A regarding the arrangement of the beams 4. The coordinate space 33 of the beam arrangement pattern area map 30 is divided into regions such that each coordinate on the coordinate space 33 of the beam arrangement pattern area map 30 belongs to the region corresponding to the pattern A in which the evaluation of, for example, construction cost SC is best when the first and second indicators are set to the coordinate values ​​of that coordinate. By using such a beam arrangement pattern area map 30, when designing a floor slab 7, by specifying the values ​​determined for each of the first and second indicators, it is possible to determine which of the multiple regions that divide the coordinate space 33 of the beam arrangement pattern area map 30 the coordinates of the coordinates of each of the specified values ​​belong to, and by obtaining the beam arrangement pattern A corresponding to the region to which the coordinates belong, it is possible to find the beam arrangement pattern A that yields the best evaluation of construction costs SC, etc., when realizing the floor slab 7 to be designed. Based on this idea, when values ​​are specified for each of the first and second indicators, the beam configuration acquisition unit 22 acquires configuration A from the beam configuration area map 30 that corresponds to the area to which the coordinates whose coordinate values ​​are the values ​​specified for each of the first and second indicators belong. The structural calculation unit 23 performs structural calculations on the configuration plan P in which the beams 4 are arranged according to the acquired configuration A, and evaluates the configuration plan P, such as calculating the construction cost SC. The beam configuration plan proposal unit 24 proposes the configuration plan P that yields the best evaluation, along with the calculated evaluation results such as the construction cost SC. In this way, by proposing a proposed arrangement P for the secondary beams 4, which yields favorable evaluation results, it becomes possible to support the design of floor secondary beams.

[0077] Furthermore, one or more indicators are a first indicator and a second indicator, where the first and second indicators are the length in the long side direction of the floor slab 7 and the side length ratio, which is the value obtained by dividing the length in the short side direction of the floor slab 7 by the length in the long side direction. Multiple beam arrangement pattern area maps 30 are provided to correspond to each of the multiple values ​​that the live load of the floor slab 7 can take and the multiple values ​​that the slab thickness of the floor slab 7 can take. When values ​​are specified for the live load and slab thickness in addition to the first and second indicators, the beam arrangement pattern acquisition unit 22 selects a beam arrangement pattern area map 30 corresponding to the specified live load value and the specified slab thickness value, and acquires a pattern A from the selected beam arrangement pattern area map 30 corresponding to the area to which the coordinates whose coordinate values ​​are the values ​​specified in each of the first and second indicators belong, based on the specified first and second indicators. Furthermore, a response surface is constructed for each of the multiple configurations A, in which the explanatory variables include the length in the long direction, the ratio of the side lengths, the live load, and the slab thickness, and the construction cost SC is the objective variable. By forming a region such that each coordinate in the coordinate space 33 belongs to the region corresponding to the configuration A of the response surface with the smallest construction cost SC at that coordinate, a beam arrangement configuration region map 30 is created. With the above configuration, the beam arrangement pattern area map 30 and the beam pattern acquisition unit 22 can be appropriately implemented.

[0078] It should be noted that the floor beam design support device of the present invention is not limited to the embodiments described above with reference to the drawings, and various other modifications are conceivable within its technical scope. For example, in the second embodiment, the first and second indicators were the length of the long side and the ratio of the side length of the floor slab 7, but the live load and slab thickness may also be used as the first and second indicators. In addition to the above, it is possible to select or discard the configurations listed in each embodiment, or to change them to other configurations as appropriate.

[0079] (Related technologies) Next, related technologies of the present invention will be described. Regarding the floor beam design support device as described above, a device can be conceivable that supports the design of a floor beam structure by treating columns and beams as main beams, intermediate columns as primary beams, and furring strips as secondary beams, thereby providing intermediate columns and furring strips in a space enclosed by columns and beams. Alternatively, a device could be conceivable that assists in designing a structure where columns and beams are treated as main beams, horizontal furring strips as primary secondary beams, and vertical furring strips as secondary secondary beams, thereby enabling the placement of horizontal and vertical furring strips within a space enclosed by columns and beams. Alternatively, a device could be conceivable that assists in designing a ceiling grid by, for example, treating a certain ceiling grid as a floor enclosed by main beams, treating the joist hangers as primary joists, and treating the joists as secondary joists, thereby enabling the installation of joists and joist hangers within a given ceiling grid. Thus, the present invention can be applied not only to the design of floor joists, but also to designs in which surface materials are supported by intersecting or unidirectional line members. [Explanation of Symbols]

[0080] 3 Main beam 31 1st axis (axis) 4 Small beam 32 2nd axis (axis) 5 Primary beam 33 Coordinate space 6. Arrangement of secondary beams A 7. Floor slab P layout plan 10, 20 Floor beam design support device H1 1st horizontal direction 12 Small beam placement plan generation part H2 2nd horizontal direction 13, 23 Structural calculation section DO Primary beam cross direction 14, 24 Proposal for beam arrangement DO1 One side 22 Beam shape acquisition section DO2 Other side 30. Beam Arrangement Pattern Area Map SC Construction Cost

Claims

1. A floor beam design support device that assists in the design of floor slabs and secondary beams supporting said floor slabs, The aforementioned secondary beams are designed to include primary secondary beams that are erected between the main beams surrounding the floor slab. When viewing the arrangement of the beams from one side to the other in the direction of intersection of the primary beams, the arrangement of the beams is represented by a beam listing number formed by listing a first number corresponding to the primary beam and a second number corresponding to the secondary beam, in the order in which either the primary beam or the secondary beam installed between the primary beam and the main beam or between the primary beams appear. The proposed arrangement of the secondary beams includes the numerical values ​​listed for the secondary beams, A beam arrangement plan generation unit calculates all possible beam list values ​​in which the beams are arranged and generates the arrangement plan corresponding to each of the calculated beam list values, A structural calculation unit evaluates each of the generated multiple arrangement proposals by performing structural calculations when the secondary beams are arranged to correspond to the secondary beam list values ​​included in the arrangement proposal. The beam arrangement proposal section extracts and proposes the aforementioned arrangement plans that have favorable evaluation results, A floor beam design support device characterized by being equipped with the following features.

2. A floor beam design support device that assists in the design of floor slabs and secondary beams supporting said floor slabs, The coordinate space formed around one or more indicators relating to the floor slab is divided into regions corresponding to each of a plurality of configurations relating to the arrangement of the beams, and comprises a beam arrangement configuration region map. The coordinate space of the beam arrangement configuration region map is divided into regions such that each coordinate in the coordinate space belongs to the region corresponding to the configuration in which the evaluation is best when each of the indicators is set to the coordinate value of that coordinate. When a value is specified for each of the aforementioned indicators, a beam configuration acquisition unit acquires the configuration from the beam configuration configuration region map that corresponds to the region to which the coordinates whose coordinates are the values ​​specified for each of the aforementioned indicators belong. A structural calculation unit performs structural calculations on a proposed layout in which the secondary beams are arranged according to the acquired configuration, and evaluates the proposed layout. The beam arrangement proposal department proposes the aforementioned arrangement plan along with the evaluation results, A floor beam design support device characterized by being equipped with the following features.

3. The one or more of the aforementioned indicators are the first indicator and the second indicator, The first and second indicators are side length ratios, which are the length of the long side of the floor slab and the value obtained by dividing the length of the short side of the floor slab by the length of the long side. Multiple beam arrangement mode region maps are provided to correspond to each of the combinations of multiple possible values ​​for the live load of the floor slab and multiple possible values ​​for the slab thickness of the floor slab. When values ​​are specified for the live load and slab thickness in addition to the first and second indicators, the beam configuration acquisition unit selects a beam configuration region map corresponding to the specified value of the live load and the specified value of the slab thickness, and acquires the configuration corresponding to the region to which the coordinates, whose coordinate values ​​are the values ​​specified for each of the first and second indicators, belong, from the selected beam configuration region map. The floor beam design support device according to feature 2.

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