Building area setting method and building area setting program

Abstract

To easily set a construction area of a building.SOLUTION: Acquiring data related to a building, acquiring a condition for selecting and determining a column included in a construction area, selecting a column included in the construction area, comparing a total number of structural materials included in the construction area with a reference number of structural materials, excluding a column finally selected as a column included in the construction area, and determining a column included in the construction area after the column is excluded, the step of selecting a column is repeatedly performed until the total number of structural materials exceeds the reference number of structural materials, and the step of excluding a column is performed when the total number of structural materials exceeds the reference number of structural materials.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an erection work area setting method and an erection work area setting program for setting an erection work area of ​​a building. [Background technology]

[0002] Patent Document 1 discloses a method for automatically creating construction plans for steel-framed buildings. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 6-325134 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, construction plans for steel-framed buildings are based on the know-how of the construction staff, but the larger the building, the longer it takes to create the construction plan. For example, if there is a design change, it will take a significant amount of time to create the construction plan again. In addition, the setting of work areas in the construction plan is largely at the discretion of the construction staff, and if the setting of work areas does not match the actual construction capacity, there is a risk of delays in the construction period. Even in the method described in Patent Document 1, the scope of the work areas can be specified arbitrarily, so if the setting of work areas does not match the construction capacity of the building site, there is a risk of creating an unrealistic plan.

[0005] The present invention aims to easily set up construction zones for a building. [Means for solving the problem]

[0006] The present invention is a construction work section setting method for setting an erection work section for a building, comprising: a data acquisition step for acquiring data on columns used in the building and structural materials to be laid between the columns; a selection condition acquisition step for acquiring selection conditions for selecting columns to be included in the erection work section; a determination condition acquisition step for acquiring a standard number of structural materials that can be constructed within a predetermined working time as a determination condition for determining the columns to be included in the erection work section; a column selection step for selecting columns to be included in the Nth (N is a natural number) erection work section based on the selection conditions; and a structural material that can be laid by erecting the columns included in the Nth erection work section, which is added to the Nth erection work section. The method includes a material addition step, a structural material number comparison step in which the total number of structural materials, which is the sum of the number of columns and the number of structural materials included in the Nth construction section, is compared with a standard number of structural materials, a column exclusion step in which the column last selected as a column to be included in the Nth construction section in the column selection step is excluded, and a construction section setting step in which the Nth construction section is set by determining the columns to be included in the Nth construction section after the column exclusion step, and the column selection step is repeatedly performed in the structural material number comparison step until the total number of structural materials exceeds the standard number of structural materials, and the column exclusion step is performed when the total number of structural materials exceeds the standard number of structural materials in the structural material number comparison step.

[0007] The present invention also provides an erection work area setting program for setting an erection work area for a building, the program including a data acquisition step for acquiring data on columns used in the building and structural materials to be laid between the columns, a selection condition acquisition step for acquiring selection conditions for selecting columns to be included in the erection work area, a determination condition acquisition step for acquiring a standard number of structural materials that can be constructed within a predetermined working time as a determination condition for determining the columns to be included in the erection work area, a column selection step for selecting columns to be included in the Nth (N is a natural number) erection work area based on the selection conditions, and a step for selecting structural materials that can be laid by erecting the columns included in the Nth erection work area. a structural material addition step for adding structural materials to the Nth construction section, a structural material number comparison step for comparing the total number of structural materials, which is the sum of the number of columns and the number of structural materials included in the Nth construction section, with a standard number of structural materials, a column exclusion step for excluding the column last selected as a column to be included in the Nth construction section in the column selection step, and a construction section setting step for setting the Nth construction section by determining the columns to be included in the Nth construction section after the column exclusion step.The column selection step is repeatedly performed in the structural material number comparison step until the total number of structural materials exceeds the standard number of structural materials, and the column exclusion step is performed when the total number of structural materials exceeds the standard number of structural materials in the structural material number comparison step. [Effects of the Invention]

[0008] According to the present invention, construction work areas for a building can be easily set. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing an example of a building to which a construction work area setting method according to an embodiment of the present invention is applied, showing the construction process of the building. [Figure 2] This is a diagram showing the construction process of a building, following Figure 1. [Figure 3] 1 is a flowchart showing steps performed in an erection work area setting method according to an embodiment of the present invention. [Figure 4]FIG. 10 is a diagram for explaining the steps executed in the construction work area setting method according to an embodiment of the present invention, and is a plan view showing an example of column placement. [Figure 5] FIG. 5 is a diagram for explaining steps executed in the construction work area setting method according to the embodiment of the present invention, and is a diagram showing a part of FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an erection work area setting method and an erection work area setting program according to an embodiment of the present invention will be described with reference to the drawings.

[0011] The construction work area setting method and construction work area setting program according to an embodiment of the present invention automatically set the construction work area of ​​a building that is constructed by sequentially assembling structural materials such as columns and beams brought in by a crane, based on the design data and given conditions of the building. For example, as shown in Figures 1 and 2, the method sets the construction work area of ​​a steel-framed building 1 that is constructed by sequentially assembling steel columns P and steel beams B lifted by a mobile crane.

[0012] The steel columns P that make up a steel-framed building 1 as shown in Figures 1 and 2 are divided into multiple sections according to the loading restrictions of transport vehicles such as large trailers, and for example, section 1 is set to a length equivalent to two floors of the building 1, and section 2 connected above section 1 and section 3 connected above that are each set to a length equivalent to three floors of the building 1. Figures 1 and 2 show an example of an approximately eight-story building 1 in which the steel columns P are made up of three sections.

[0013] In the build-and-run method, as shown in Figure 1, steel columns P and steel beams B are assembled up to the top floor from one end of building 1, for example, the far side as seen from the road on the site where structural materials are delivered, and then the crane is moved a predetermined distance toward the other end of building 1, and the steel columns P and steel beams B are assembled up to the top floor repeatedly. In this way, building 1 is gradually expanded in the horizontal direction (the direction indicated by arrow A in Figure 2), as shown in Figure 2.

[0014] Specifically, as shown in Figure 1, first, steel columns P and steel beams B are assembled in the first section erection work area, which is preset as a group of steel frames that can be constructed in one day. Once work in the first section is completed, the steel columns P and steel beams B in the second section in the same first area are assembled on the next work day, and on the work day after that, the steel columns P and steel beams B in the third section in the same first area, i.e., the section that includes the top floor, are assembled.

[0015] In this way, the building 1 is constructed by assembling the steel columns P and steel beams B from the first to third sections in the order of the first area, the second area, the third area, and the fourth area, as shown in Figures 1 and 2.

[0016] It should be noted that building 1 is not limited to a steel-framed building, but may be any building constructed by sequentially assembling structural materials lifted by a crane. For example, the structural materials that make up building 1 may be precast concrete columns and beams.

[0017] Here, the construction plan for a building, which is constructed by sequentially assembling structural materials lifted by a crane, is made based on the know-how of the construction staff, but the larger the building, the longer it takes to create the construction plan.For example, if there is a design change, it will take a significant amount of time to create the construction plan again.

[0018] In particular, with the construction and run-off method, where the crane's position changes, it is not easy to understand how the construction plan will change if the crane's movement path or lifting capacity is changed.

[0019] Therefore, in this embodiment, the construction work area setting method described in detail below facilitates the setting of the construction work area by automatically determining the construction work area of ​​the building 1 according to the given conditions based on the design data of the building 1. As mentioned above, the construction work area means a group of structural materials for one section that can be constructed in one day.

[0020] Next, the erection work area setting method according to this embodiment will be described with reference to Fig. 3 to Fig. 5. Fig. 3 is a flowchart showing the steps executed by the erection work area setting method, and Fig. 4 and Fig. 5 are diagrams for specifically explaining the erection work area setting method. Fig. 4 and Fig. 5 show plan views of an example of the arrangement of steel columns P in section 1. In the following, an example will be described in which the building 1 for which an erection work area is set by the erection work area setting method is a steel-framed building 1 constructed using the build-and-run method.

[0021] The construction work area setting method is executed in accordance with the flowchart shown in Figure 3 by starting a construction work area setting program that has been stored in advance in a ROM or the like in a computer (not shown) with general computing functions that includes a CPU (central processing unit), ROM (read-only memory), RAM (random access memory), and an I / O interface (input / output interface).

[0022] When the construction work section setting program is started, first, in step S11, design data of the building 1 is acquired (data acquisition step).

[0023] The design data acquired in this step is the specifications of each steel frame constituting the building 1, and includes the type, weight, and identification number of each steel frame. If the type is a steel column P (column), the data further includes the coordinate positions of the upper and lower ends and the identification number of the steel column P (column located at the bottom) that requires prior construction. If the type is a steel beam B (structural material) and a main girder, the data further includes the coordinate positions of both ends and the identification number of the steel column P that requires prior construction. If the type is a steel beam B (structural material) and a sub-girder, the data further includes the coordinate positions of both ends and the identification number of the steel beam B that requires prior construction. If the type is a steel beam B (structural material) and a sub-girder, the data further includes the coordinate positions of both ends and the identification number of the steel beam B that requires prior construction. Note that the structural materials that are spanned between the steel columns P include braces and the like that are spanned between the steel columns P in addition to the steel beams B.

[0024] Furthermore, when the type is a steel staircase S1, the specifications of the steel frame further include the coordinate positions of both ends and the identification number of the steel column P that needs to be constructed first. Furthermore, the identification number of the steel column P to which the steel staircase S1 is attached is given a code or the like that can identify it as a steel column P with a steel staircase S1. Figure 4 shows an example in which simple identification numbers are assigned in order to each steel column P and some steel beams B.

[0025] These design data are automatically extracted from BIM (Building Information Modeling), which is three-dimensional shape data of the building 1, by downloading the BIM via a network such as the Internet.

[0026] Once the design data of the building 1 is acquired, in the subsequent step S12, given conditions relating to the setting of the construction work section are acquired (selection condition acquisition step and determination condition acquisition step).

[0027] The conditions obtained in this step are selection conditions for selecting steel columns P to be included in the construction work area from the steel columns P used in building 1, and determination conditions for determining the steel columns P to be included in the construction work area.

[0028] The selection conditions include the conditions for selecting the first steel column P (column) included in the construction work area, and the conditions for selecting the second and subsequent steel columns P.

[0029] Specifically, the basic condition for selecting the first steel column P is to select the steel column P that is located farthest from the reference position among the steel columns P that are not included in any of the construction work areas.

[0030] The reference position is the position of the steel column P to be erected last among the steel columns P used in the building 1, and in the erection and escape method, the steel column P located closest to the exit when the crane leaves the site after completing lifting all the steel columns P, etc., is generally the steel column P to be erected last among the steel columns P used in the building 1.

[0031] In order to set the position of the steel column P to be erected last, in step S12, the position of the exit when the crane leaves the site, or the route that the crane will travel within the site from the start to the completion of construction of the building 1, are further obtained as selection conditions.

[0032] It is also possible to specify in advance the steel column P to be erected last, and if the identification number or the like of the steel column P to be erected last is acquired as a selection condition in step S12, i.e., if the steel column P to be erected last is designated in advance, the crane's exit or movement route does not need to be acquired as a selection condition.

[0033] Therefore, if the position of the exit for the crane to exit the site is acquired as a selection condition, the position of the steel column P that is located closest to the exit position is set as the reference position based on the position of the exit, and if the identification number of the steel column P to be erected last is specified as a selection condition, the position of the steel column P with that identification number is set as the reference position.

[0034] In addition to the basic conditions mentioned above, the conditions for selecting the first steel column P include, when the distance from the reference position to the selected steel column P is the same, which specification should be used to make the selection, for example, giving priority to the column with the smaller identification number or the column with the greater weight.

[0035] Generally, steel-framed buildings 1 are provided with steel staircases, either temporarily or permanently, and these are used by workers to move to their work positions when attaching steel beams B to steel columns P. Therefore, early installation of the steel staircases can improve overall work efficiency. On the other hand, if the steel column P to which the steel staircase is to be attached is located on or near the crane's travel path, prioritizing the installation of this steel column P may make it difficult to install other steel columns P, which could actually reduce overall work efficiency.

[0036] Therefore, the conditions for selecting the first steel column P include whether or not to give priority to selecting a steel column P to which a steel staircase will be attached. However, the conditions for selecting the first and subsequent steel columns P are not limited to these.

[0037] The basic condition for selecting the second or subsequent steel column P is to select the steel column P that is not included in any construction work area and that has the most steel beams B (structural materials) that can be spanned between the steel column P selected as the first steel column P or the steel column P previously selected as a steel column P included in the same construction work area.

[0038] In addition to the basic conditions mentioned above, the conditions for selecting the second or subsequent steel columns P include the condition that if the number of steel beams B (structural materials) spanning between the steel column P selected as the first steel column P or the previously selected steel column P is the same, the steel column P that is farther from the reference position is selected, and if the number of steel beams B (structural materials) spanning between the steel column P selected as the first steel column P or the previously selected steel column P is the same and the distance from the reference position is also the same, the condition that determines which specification to base the selection on, for example, giving priority to the column with the smaller identification number or the column with the greater weight.

[0039] Furthermore, if the condition for selecting the first steel column P is to give priority to selecting a steel column P to which a steel staircase will be attached, the condition for selecting the second and subsequent steel columns P is to give priority to selecting another steel column P to which the same steel staircase as the steel staircase attached to the first steel column P will be attached. However, the conditions for selecting the second and subsequent steel columns P are not limited to these.

[0040] The confirmation conditions are conditions for confirming the steel column P selected based on the selection conditions as the steel column P included in the construction work area, and the basic conditions are that the total number of steel columns P and steel beams B included in the construction work area (total number of structural materials) is less than the standard number of steel frames (standard number of structural materials), and that the structure formed by the steel columns P and steel beams B included in the construction work area is a stable structure.

[0041] The standard number of steel beams is the total number of steel columns P and steel beams B that can be installed within a specified working time (for example, one day (8 hours)), i.e., the amount of work that can be done within a specified working time, and can be calculated based on the lifting capacity of the cranes used for the work, the number of cranes, and the number of workers available to work.

[0042] In order to calculate the standard number of steel frames, in step S12, parameters required for the calculation, such as the lifting capacity of the crane, the number of cranes, and the number of workers available for the work, are further acquired as determination conditions.

[0043] It is also possible to specify the standard number of steel frames in advance, and if the numerical value of the standard number of steel frames is acquired as a determination condition in step S12, the parameters required to calculate the standard number of steel frames do not need to be acquired as a determination condition.

[0044] Therefore, if the parameters required to calculate the standard number of steel frames are obtained as the determination conditions, the standard number of steel frames is calculated based on those parameters, and if a numerical value for the standard number of steel frames is input as the determination conditions, that input value is used as the standard number of steel frames.

[0045] Furthermore, a stable structure under the determined conditions means that all steel columns P included in the construction area are connected to other steel columns P included in the construction area via steel beams B in two or more directions that are approximately perpendicular when viewed from above, and there are no steel columns P that are connected to other steel columns P in only one direction; in other words, when viewed from above, the steel beams B arranged between the steel columns P are arranged in a U-shape (for example, including multiple U-shapes that overlap in part, or multiple U-shapes connected to each other by beams), and there are no parts where the steel beams B are arranged in a U-shape, a straight line shape, or an L-shape.

[0046] From the viewpoint of work safety, it is preferable that the assembled steel columns P and steel beams B form a stable structure when the day's work is completed. Note that the phrase "two directions that are approximately perpendicular" is not limited to the two steel beams B whose material axis directions intersect at 90 degrees, but also includes the two steel beams B whose material axis directions intersect at an angle ranging from approximately 45 degrees to approximately 135 degrees. Furthermore, whether or not a structure is stable is not limited to being determined based on the arrangement of the steel beams B as described above, but may also be determined based on the results of structural calculations that can easily calculate the allowable stress and horizontal bearing capacity.

[0047] These selection conditions and determination conditions may be input via an input device (not shown) connected to the computer, or may be selected from conditions stored in advance in a ROM or the like.

[0048] When the conditions for setting the erection work area are acquired, setting of the steel columns P included in the erection work area starts in step S13 and thereafter.

[0049] First, in steps S13 to S16, a steel column P to be added to the Nth erection work section is selected. N is a natural number, and the steel column P is selected in order starting from the first erection work section. As will be described later, once the setting of the steel column P included in the Nth erection work section is completed, the setting of the steel column P to be included in the next erection work section, the N+1th erection work section, begins. The selection of the steel column P to be added to the first erection work section will be described below with reference to FIG. 4.

[0050] If the first construction section does not yet include a steel column P and the first steel column P to be added to the first construction section is to be selected, proceed to step S15, where the first steel column P is selected based on the above-mentioned selection conditions (column selection step).

[0051] Specifically, if the reference position acquired as a selection condition is, for example, the position of steel column P14 located in the lower right of Fig. 4, among the steel columns P that are not included in any of the construction work areas, the steel column P1 that is located farthest from the steel column P14 that is the reference position is selected as the first steel column P. For reference, Fig. 4 shows a circle with a dashed line indicating the distance D1 from steel column P14 to steel column P1. Note that a case where the selection condition is to give priority to selecting a steel column P to which a steel staircase S1 is attached will be described later.

[0052] Once the first steel column P is selected, the process proceeds to step S16, where a second steel column P is selected based on the above-mentioned selection conditions (column selection step).

[0053] The steel column P1 selected as the first steel column P is connected to two steel columns P2 and P5 via steel beams B1 and B2, respectively, but here we assume that the number of steel beams B1 and B2 is the same.

[0054] In this case, of the two steel columns P2 and P5, the steel column P2 that is farther away from the steel column P14 that is the reference position is selected as the second steel column P.

[0055] When the second steel column P is selected, the process proceeds to step S17, where a steel beam B1 (structural material) that can be spanned by erecting the two selected steel columns P1, P2 is added to the first construction work area (structural material addition step). Note that the steel beam B1 that can be spanned by erecting the two steel columns P1, P2 is not a single beam, but multiple beams (for example, 2 to 3 beams) that are provided at predetermined intervals in the vertical direction between the two steel columns P1, P2. Furthermore, if there is a construction work area that has been set up earlier, a steel beam B that can be spanned between the steel column P included in the construction work area that has been set up earlier is also added.

[0056] Next, in step S18, the total number of steel frames (total number of structural materials) included in the first construction section is compared with the standard number of steel frames (standard number of structural materials) set or obtained as the above-mentioned determination condition (structural material number comparison step).

[0057] In step S18, if the total number of steel frames included in the first construction section exceeds the standard number of steel frames, proceed to step S20; if the total number of steel frames included in the first construction section is equal to or less than the standard number of steel frames, proceed to step S19.

[0058] If the total number of steel frames included in the first erection section is equal to or less than the standard number of steel frames and there are still selectable steel columns P, the process proceeds to step S13 via step S19, and the selection of the third steel column P to be added to the first erection section begins. The flow from step S20 onwards and the case where the determination in step S19 is negative will be described later.

[0059] Since the steel column P to be added to the first construction section is the third, step S15 is skipped and the process proceeds to step S16, where the third steel column P is selected based on the above-mentioned selection conditions.

[0060] Steel column P5 is connected to steel column P1 selected as the first steel column P via steel beam B2, and steel column P6 is connected to steel column P2 previously selected as the second steel column P via steel beam B3. If the number of steel beams B2 and B3 is the same, of the two steel columns P5 and P6, steel column P5, which is farthest from steel column P14, which is the reference position, is selected as the third steel column P.

[0061] Once the third steel column P is selected, the process proceeds to step S17, where a steel beam B2 (structural material) that can be spanned by further erecting the selected third steel column P5 is added to the first construction section.

[0062] The explanation will be continued assuming that the total number of steel frames included in the first construction section in which the third steel column P5 has been selected is still below the standard number of steel frames.

[0063] Similarly, in selecting the fourth steel column P in step S16, steel column P4 is connected to the previously selected steel column P5 via steel beam B8, and steel column P9 is connected to the previously selected steel column P5 via steel beam B9, while steel column P6 is connected to the previously selected two steel columns P2 and P5 via two steel beams B3 and B4. In other words, steel column P6 is connected to steel column P already included in the first construction section via more steel beams B than steel column P4 and steel column P9.

[0064] Therefore, in step S16, the steel column P6 is selected as the fourth steel column P.

[0065] In this way, the total number of steel frames included in the first construction section where the fourth steel column P6 was selected is still below the standard number of steel frames, and similarly, after the fifth steel column P4 is selected, the sixth steel column P3S is selected, and the total number of steel frames included in the first construction section exceeds the standard number of steel frames. At this point, six steel beams B1, B2, B3, B4, B8, and B10 have been added to the first construction section as structural members that can be installed, and a sub-beam B5 that can be installed by installing two steel beams B1 and B4, and two sub-beams B6 and B7 that can be installed by installing the sub-beam B5, have also been added to the first construction section.

[0066] When the total number of steel frames (total number of structural members) included in the first construction section exceeds the standard number of steel frames, the process proceeds to step S20, where the last added steel column P is excluded (column exclusion step).

[0067] In this case, the sixth selected steel column P3S is excluded as the last added steel column P. At the same time, the steel beam B10, which became possible to install by selecting steel column P3S, is also excluded from the first erection section.

[0068] This ensures that the total number of steel frames included in the first construction section is within the standard number of steel frames, making it possible to assemble all of the steel columns P and steel beams B included in the first construction section within the specified working time (for example, one day (8 hours)).

[0069] Next, in step S21, the stability of the structure formed by the steel columns P and steel beams B included in the first erection work section is determined, that is, whether the structure formed by the steel columns P and steel beams B will be a stable structure (structure determination step). Note that if there is a previously set erection work section and this existing erection work section is connected via a steel beam B, the stability of the structure including the structure formed by the steel columns P and steel beams B included in the previously set erection work section is determined.

[0070] The first construction section, excluding the sixth selected steel column P3S, includes five steel columns P1, P2, P4, P5, and P6 and eight types of steel beams B1, B2, B3, B4, B5, B6, B7, and B8 that can be spanned once these steel columns P are erected.

[0071] As shown in Figure 5, the structure formed by these steel columns P and steel beams B is such that four steel columns P1, P2, P5, and P6 are connected to other steel columns P via steel beams B in two or more directions that are approximately perpendicular when viewed from above, but one steel column P4 is connected to steel column P5 in only one direction.

[0072] Since the structure formed by the steel column P and steel beam B included in the first construction section is unstable, the process returns to step S20 and the last added steel column P is excluded.

[0073] In this case, the fifth selected steel column P4 is excluded as the last added steel column P. At the same time, the steel beam B8, which became available for installation by selecting the steel column P4, is also excluded from the first construction section.

[0074] With the steel column P4 removed, the structure formed by the steel columns P and steel beams B included in the first erection work section is a stable structure (see FIG. 5), so the process proceeds to step S22, where the steel columns P and steel beams B included in the first erection work section are confirmed and finally set as the first erection work section (work section setting step). Steps S20 and S21 are repeated until the structure formed by the steel columns P and steel beams B included in the erection work section is a stable structure. Furthermore, the determination in step S21 (structure determination step) as to whether the structure is stable or not may be made based on the results of a simple structural calculation, as described above, instead of the arrangement state of the steel beams B.

[0075] The total number of steel columns P and steel beams B included in the first construction section finally set in this way is less than the standard number of steel frames, and the structure formed by the steel columns P and steel beams B included in the first construction section is a stable structure.

[0076] Therefore, if construction is carried out in accordance with the set construction work area, a structure with a stable structure will always be constructed within the specified work time (for example, one day (8 hours)).

[0077] In addition, in the above-mentioned step S19, if there is no selectable steel column P, that is, if all steel columns P are already included in any of the erection work sections, the process proceeds to step S22 without going through the above-mentioned step S21, and the steel columns P and steel beams B included in the erection work section are determined. Since the erection work section set in such a case will be connected to the steel columns P included in the already set erection work section, the structure formed will naturally be a stable structure.

[0078] In the following step S23, it is determined whether or not all the steel columns P have been selected as steel columns P included in any of the construction work sections.

[0079] If there are any steel columns P that have not yet been selected, the process proceeds to step S24, and the setting of the next erection work section, i.e., the N+1th erection work section, is started. In this way, the setting of the erection work sections is repeatedly executed until all steel columns P are included in any of the erection work sections.

[0080] On the other hand, if there is no unselected steel column P, the flow ends.

[0081] Next, a case where the selection condition is to give priority to the selection of the steel column P to which the steel staircase S1 is to be attached will be described.

[0082] In this case, before selecting the first steel column P in step S15, it is determined whether there is a steel column P to which a steel staircase S1 can be attached, specifically, whether there is a steel column P with a steel staircase S1 that is not included in any construction work area.

[0083] If there is no steel column P with a steel staircase S1 that is not included in any of the construction work areas, as described above, the steel column P1 that is located farthest from the reference position, steel column P14, is selected as the first steel column P.

[0084] On the other hand, if there is a steel column P with a steel staircase S1 that is not included in any of the construction work areas, for example, if there are two steel columns P3S and P7S to which the steel staircase S1 is attached as shown in Fig. 4, the steel column P3S that is located farthest from the steel column P14 that is the reference position is selected as the first steel column P. Note that Fig. 4 shows the case where the steel staircase S1 is an external staircase, but the steel staircase S1 may also be an internal staircase.

[0085] Similarly, before selecting the second or subsequent steel column P in step S16, it is determined whether there is a steel column P to which a steel staircase S1 can be attached.For example, as shown in Figure 4, if a steel column P7S to which a steel staircase S1 identical to the steel staircase S1 attached to the steel column P3S selected as the first steel column P can be attached has not yet been selected, the steel column P7S is selected as the second steel column P.

[0086] From this point on, as in the example above, steel columns P are selected so that the total number of steel columns P and steel beams B included in the construction area is less than or equal to the standard number of steel frames, and so that the structure formed by the steel columns P and steel beams B included in the construction area is a stable structure.

[0087] The construction order of the multiple construction sections confirmed as described above is set in the order confirmed by the flow. In other words, the first confirmed construction section is constructed first, followed by the second confirmed construction section, and then the third confirmed construction section.

[0088] Furthermore, the construction order within each erection work section is steel column, main girder, secondary girder, and grandchild beam, but steel of the same type is set to be installed in order from the farthest from the reference position. Specifically, steel columns P are installed in the order selected as steel columns P included in the erection work section, and steel beams B are installed in order from the farthest from the reference position. For example, the installation order of the two grandchild beams B6 and B7 shown in Figure 4 is as follows: grandchild beam B6, which is farthest from the reference position (steel column P14), is installed first, followed by grandchild beam B7, which is closer to the reference position than grandchild beam B6.

[0089] Through the above steps, the construction sections to be constructed within a predetermined work time (for example, one day) are set, and the construction sequence of the set construction sections and the construction sequence within each construction section are also set. Therefore, based on these, it is possible to create a construction schedule for building 1 under predetermined selection conditions and fixed conditions.

[0090] Furthermore, for example, in order to shorten the number of days required for construction, it is possible to reduce the number of construction work sections set by increasing the standard number of steel frames (standard number of structural members) set or obtained as a confirmation condition, but increasing the standard number of steel frames requires renting a large crane with high lifting capacity, increasing the number of cranes, and increasing the number of workers. On the other hand, if an attempt is made to reduce rental costs by using smaller cranes, the standard number of steel frames will be reduced, which could result in longer construction days and, in some cases, making it impossible to set up construction work sections that meet the confirmation conditions.

[0091] Therefore, by changing the selection and confirmation conditions as appropriate, it is possible to determine the relationship between the cost and number of days required for construction, grasp the most optimal conditions in advance, and create an appropriate construction plan.

[0092] In addition, in the above example, the reference position was set to the position of steel column P14 located at the bottom right in Figure 4, but if the reference position is changed to the position of steel column P11 located at the bottom left in Figure 4, it is possible to easily understand the impact that the selection conditions have on the construction process, such as how the set construction work area will change and how the construction process of building 1 will change, and it is also possible to understand the optimal crane exit to improve work efficiency.

[0093] According to the above embodiment, the following effects are achieved.

[0094] According to the above-mentioned construction work area setting method and construction work area setting program, in the column selection step (steps S15 and S16), steel columns P are selected based on preset conditions until the total number of steel columns P (columns) and steel beams B (structural materials) included in the Nth (N is a natural number) construction work area exceeds the standard number of steel frames that can be constructed within a specified working time, and the steel column P last selected as the steel column P included in the Nth construction work area in the column selection step is excluded in the column exclusion step (step S20), and then the steel columns P and steel beams B included in the Nth construction work area are confirmed and the Nth construction work area is set.

[0095] In this way, each construction section is automatically set according to a predetermined working time, for example, the standard number of steel frames that can be constructed in one day (8 hours). Therefore, even if the size of building 1 is relatively large, construction sections can be easily set that meet the conditions previously set as the construction capacity of the construction site.

[0096] In addition, in the construction work area setting method and construction work area setting program, if it is determined that the structure formed by the steel column P and steel beam B included in the Nth construction work area will be a stable structure, the steel column P and steel beam B included in the Nth construction work area are confirmed and the Nth construction work area is set.

[0097] In this way, each construction section is set up so that the structure formed by the steel columns P and steel beams B included in that construction section is a stable structure. Therefore, when work for one day is completed, the assembled steel columns P and steel beams B form a stable structure, thereby increasing the safety of the work.

[0098] In addition, in the construction work area setting method and construction work area setting program, it is possible to set a condition for selecting a steel column P such that a steel column P to which a steel staircase will be attached is selected first.

[0099] Since steel stairs are used by workers to move to their work position when attaching steel beams B to steel columns P, overall work efficiency can be improved by prioritizing the steel columns P to which the steel stairs will be attached and setting the system so that those steel columns P are erected first.

[0100] The following modified examples are also within the scope of the present invention, and it is possible to combine the configurations shown in the modified examples with the configurations described in the above-mentioned embodiments, or to combine the configurations described in the different modified examples below.

[0101] In the above embodiment, the example was explained using the case where the building 1 is a steel-framed building 1 constructed using the build-and-run method, but the above-mentioned construction work area setting method and construction work area setting program can also be applied when building 1 without changing the position of the crane, and for example, building 1 may be constructed without changing the position of the mobile crane.

[0102] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments. [Explanation of symbols]

[0103] 1...Buildings P, P1~14... Steel columns (pillars) B, B1 to 10: Steel beams (structural materials) S1 Steel Stairs

Claims

1. A construction work area setting method for setting a construction work area of ​​a building, a data acquisition step of acquiring data on columns and structural materials used in the building and spanning between the columns; A selection condition acquisition step of acquiring selection conditions for selecting columns included in the erection work area; a determination condition acquisition step of acquiring a standard number of structural members that can be constructed within a predetermined work time as a determination condition for determining the columns included in the erection work area; A column selection step of selecting a column included in the Nth (N is a natural number) erection work section based on the selection conditions; a structural material adding step of adding the structural material that can be delivered by erecting the pillar included in the Nth erection work section to the Nth erection work section; a structural material number comparison step of comparing the total number of structural materials, which is the sum of the number of the columns and the number of the structural materials included in the Nth erection work section, with the reference structural material number; a column excluding step of excluding the column last selected as the column included in the N-th erection work section in the column selection step; After the column excluding step, a work area setting step of setting the Nth erection work area by determining the column included in the Nth erection work area, The column selection step is repeatedly performed until the total number of structural materials exceeds the reference number of structural materials in the structural material number comparison step; The column removal step is performed when the total number of structural materials exceeds the reference number of structural materials in the structural material number comparison step. How to set construction area.

2. After the column excluding step, a structure determination step of determining the stability of a structure formed by assembling the columns and structural materials included in the Nth erection work section is further included, the pillar removal step is repeatedly performed until the structure is determined to be stable in the structure determination step; The work area setting step is performed when the structure is determined to be stable in the structure determination step. The construction work area setting method according to claim 1.

3. The construction order of the erection work sections is set in the order set in the work section setting step. The construction work area setting method according to claim 1 or 2.

4. The selection conditions include a reference position that serves as a reference when selecting the pillar, In the column selection step, Among the columns not included in any of the erection work areas, the column located farthest from the reference position is selected as the first column included in the Nth erection work area, Among the columns not included in any of the erection work areas, the column with the most structural materials to be spanned between the columns already included in the Nth erection work area is selected as the second or subsequent column to be included in the Nth erection work area, The construction order of the columns included in the Nth erection section is set in the order selected in the column selection step. The construction work area setting method according to claim 1 or 2.

5. The construction order of the structural materials included in the Nth construction work section is set in order of distance from the reference position. The construction work area setting method according to claim 4.

6. The selection criteria include whether or not to prioritize the installation of steel staircases, When the installation of the steel staircase is prioritized, in the column selection step, the column to which the steel staircase is to be installed is selected as the first column included in the first erection work section. The construction work area setting method according to claim 1 or 2.

7. An erection work area setting program for setting an erection work area of ​​a building, On the computer, a data acquisition step of acquiring data on columns and structural materials used in the building and spanning between the columns; A selection condition acquisition step of acquiring selection conditions for selecting columns included in the erection work area; a determination condition acquisition step of acquiring a standard number of structural members that can be constructed within a predetermined work time as a determination condition for determining the columns included in the erection work area; A column selection step of selecting a column included in the Nth (N is a natural number) erection work section based on the selection conditions; a structural material adding step of adding the structural material that can be delivered by erecting the pillar included in the Nth erection work section to the Nth erection work section; a structural material number comparison step of comparing the total number of structural materials, which is the sum of the number of the columns and the number of the structural materials included in the Nth erection work section, with the reference structural material number; a column excluding step of excluding the column last selected as the column included in the N-th erection work section in the column selection step; After the column excluding step, a work area setting step is executed to set the Nth erection work area by determining the columns included in the Nth erection work area, The column selection step is repeatedly performed until the total number of structural materials exceeds the reference number of structural materials in the structural material number comparison step; The column removal step is performed when the total number of structural materials exceeds the reference number of structural materials in the structural material number comparison step. Construction work area setting program.

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