JP6758235B2 - Stress or deflection calculation system - Google Patents

Description

The present invention relates to a calculation system for calculating stress or deflection generated in a frame of a unit type building.

As a system of this type, Patent Document 1 discloses a stress calculation system for calculating the stress generated in the frame (columns and beams) of a building having a frame in which columns and beams are pin-joined. ing. In this system, the stress generated in the frame when a unit horizontal load is applied to the frame is stored in advance as a table, and the stress generated in the frame is stored in the frame based on the table and the actual load actually acting on the frame. The generated stress is calculated. In this case, the stress of the frame can be calculated relatively easily without performing the stress analysis.

Japanese Unexamined Patent Publication No. 2011-18315

By the way, as a building, a unit type building in which a plurality of building units are combined with each other is known. In a unit-type building, each building unit has a frame in which columns and beams are rigidly joined, and the frame of each building unit constitutes a frame.

Here, in the stress calculation system of Patent Document 1, as described above, a frame structure in which columns and beams are pin-joined is targeted for stress calculation. Therefore, it is considered difficult to use this system for stress calculation of the frame of a unit type building in which columns and beams are rigidly joined.

In order to confirm the strength of the frame structure, the deflection generated in the frame structure may be calculated in addition to the stress of the frame structure.

The present invention has been made in view of the above circumstances, and mainly provides a stress or deflection calculation system capable of relatively easily calculating the stress or deflection generated in a frame of a unit type building. It is the purpose.

In order to solve the above problems, the stress or deflection calculation system of the first invention is configured by combining a plurality of building units having a frame body in which columns and beams are connected in a rectangular shape, and each of them is configured. A calculation system for calculating the stress or deflection generated in the frame of a unit-type building in which the frame of the building unit constitutes the frame, and the frame is based on the design data of the building. The target frame is a frame disassembling means for disassembling the frame into a plurality of vertical frames having the same height as the frame and the same width as the frame, and a vertical frame disassembled by the frame disassembling means. It is provided with an element calculation means for calculating an element which is either stress or deflection generated in the target frame, and the element calculation means applies a unit load to the vertical frame for a plurality of types of the vertical frame. The element generated in the vertical frame is obtained in advance as a unit load element, and the unit load element database for storing the unit load element of each vertical frame and the actual load acting on the target frame are acquired. The actual load that acts on the target frame acquired by the actual load acquisition means, and the unit load element of the target frame stored in the unit load element database. Based on this, the element generated in the target frame is calculated.

According to the present invention, the frame of a unit-type building is decomposed into a plurality of vertical frames having the same width as the frame of the building unit (in other words, the unit width), and the disassembled vertical frame is set as a target frame and the object thereof. The stress or deflection (hereinafter referred to as stress, etc.) generated in the frame is calculated. When calculating the stress generated in the target frame, the element database under unit load is used. In this database, for multiple types of vertical frames used to construct the frame of a unit-type building, the stress generated in the frame when a unit load is applied to the vertical frame is defined as the stress at unit load in advance. It is remembered. Then, when calculating the stress etc. generated in the target frame, the unit load stress etc. of the target frame stored in this database and the actual load acting on the target frame acquired by the actual load acquisition means are used. Based on this, the stress and the like generated in the target frame are calculated. In this case, since the stress or the like generated in each target frame can be calculated without performing stress analysis or the like, the stress or the like generated in the frame of the unit type building can be calculated relatively easily.

In the stress or deflection calculation system of the second invention, in the first invention, the actual load acquisition means acquires the actual vertical load acting on the target frame, and the element database at the time of unit load is used. With respect to the plurality of types of vertical frames, the element generated in the vertical frame when a unit vertical load as the unit load is applied to the vertical frame is stored as the element at the time of the unit load, and the element calculation means. Is generated in the target frame based on the actual vertical load acting on the target frame acquired by the actual load acquisition means and the unit load element of the target frame stored in the unit load element database. It is characterized in that the element is calculated.

According to the present invention, the stress and the like generated in the frame structure due to the vertical load acting on the frame structure can be calculated relatively easily.

In the stress or deflection calculation system of the third invention, in the second invention, the actual load acquisition means determines the vertical load per unit area for each of a plurality of types of load members that apply a vertical load to the vertical frame. Based on the load coefficient database that stores the load coefficient representing the size, the load member specifying means for specifying the load member that applies a vertical load to the target frame based on the design data, and the design data. Among the load members specified by the load member specifying means, the load width calculating means for calculating the width of the portion where the target frame bears the vertical load as the load width, and the load calculated by the load width calculating means. It is provided with an actual vertical load calculating means for calculating a vertical load acting on the target frame from the load member based on the load width of the member and the load coefficient of the load member stored in the load coefficient database. It is characterized by that.

According to the present invention, a load member that applies a vertical load to the target frame is specified based on the design data, and the vertical load that acts on the target frame is calculated from the specified load member. A load factor database is used in the calculation. In this load coefficient database, load coefficients (area loads) indicating the magnitude of the vertical load per unit area are stored for each load member for a plurality of types of load members. Then, when calculating the vertical load acting on the target frame from the load member, the vertical load is calculated based on the load width of the load member calculated by the load width calculation means and the load coefficient of the load member stored in the load coefficient database. Is calculated. In this case, the actual vertical load acting on the target frame can be obtained based on the calculated vertical load.

In the stress or deflection calculation system of the fourth invention, when there are a plurality of load positions on which a load acts on the vertical frame in any of the first to third inventions, the actual load is applied to each of the load positions. Is an actual load state, and a state in which the actual load acts only on any one of the load positions is a single load state, and the element calculation means has different load positions. For each single load state, the single load element calculation means for calculating the element generated in the target frame under the single load state as a single load element, and the single load element calculation means. The actual load acquisition means is provided with an actual load element calculation means for calculating the element generated in the target frame in the actual load state by integrating the calculated elements at a single load, and the actual load acquisition means is the target. The actual load acting on each of the load positions of the frame is calculated, and in the unit load element database, the unit load is set at the load position for each of the plurality of types of the vertical frames. The element generated in the vertical frame when the above is applied is stored as the unit load element, and the single load element calculation means is used by the actual load acquisition means for each single load state. The single is based on the acquired actual load acting on the load position corresponding to the single load state and the unit load element corresponding to the load position stored in the unit load element database. It is characterized by calculating the element under load.

Generally, an actual load acts on a vertical frame at a plurality of places. That is, the vertical frame has a plurality of load positions on which the actual load acts. Here, when the state in which the actual load acts on each load position is defined as the actual load state, and the state in which the actual load acts on only one of the load positions is defined as the single load state, the actual load state. The stress and the like generated in the vertical frame correspond to the sum of the stress and the like generated in the vertical frame in each single load state.

Therefore, in the present invention, paying attention to this point, first, under each single load state, the stress etc. generated in the target frame (hereinafter referred to as the stress under a single load etc.) are calculated respectively, and then each of the calculated singles is calculated. The stress, etc. under load is integrated to calculate the stress, etc. generated in the target frame under the actual load state. In this case, the unit load element database is used to calculate the stress under single load. In this database, when a unit load is applied to a load position for each load position for a plurality of types of vertical frames, the stress generated in the frame is stored as the stress at the time of the unit load. Then, when calculating the stress under a single load, the actual load acting on the load position corresponding to the single load state acquired by the actual load acquisition means is stored in the above database for each single load state. The single load stress, etc. is calculated based on the unit load stress, etc. corresponding to the relevant load position. In this case, when an actual load acts on the vertical frame at a plurality of load positions, the stress generated in the vertical frame can be preferably calculated.

In the stress or deflection calculation system of the fifth invention, in any one of the first to fourth inventions, the element of the target frame calculated by the element calculation means does not exceed a predetermined allowable value. An element evaluation means for determining whether or not the element is present, and a frame changing means for changing the target frame to a vertical frame having a higher strength when the element evaluation means determines that the element exceeds an allowable value. The element calculation means is characterized in that the vertical frame changed by the frame changing means is set as a target frame, and the element generated in the target frame is calculated.

According to the present invention, it is determined whether or not the calculated stress of the target frame exceeds the permissible value, and if the result of the determination exceeds the permissible value, the target frame is vertically stronger. It is changed to a frame. Then, with the changed vertical frame as the target frame, the stress and the like generated in the target frame are calculated again. In this case, even if the initial target frame is insufficient in strength, the target frame can be redesigned to satisfy a predetermined strength.

The figure which shows the electrical structure of a stress calculation apparatus. A functional block diagram showing the stress calculation process. The perspective view which shows the outline of the unit type building. The figure which shows the state which a part of the frame structure was disassembled into a vertical frame. A functional block diagram showing a frame stress calculation process. The figure for demonstrating the vertical load acting on a vertical frame. A functional block diagram showing a stress calculation process under a single load. Top view for explaining the burden width. The figure for demonstrating the horizontal load acting on a vertical frame. A functional block diagram showing a stress calculation process under a single load.

Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the present embodiment, the stress calculation device for calculating the stress generated in the frame (framework) constituting the designed unit type building is embodied. FIG. 1 is a diagram showing an electrical configuration of the stress calculation device.

As shown in FIG. 1, the building maker is provided with the stress calculation device 10. The stress calculation device 10 is composed of a personal computer and has a CAD program for designing a building. The stress calculation device 10 calculates the stress generated in the frame of the unit type building designed by using the CAD program.

The stress calculation device 10 includes a control unit 11, an operation unit 12, a display unit 13, and a storage unit 14. The operation unit 12, the display unit 13, and the storage unit 14 are connected to the control unit 11, respectively. The control unit 11 performs various processes such as a building design process and a stress calculation process.

The operation unit 12 is for inputting various information such as information necessary for building design and stress calculation, and is configured to include a keyboard, a mouse, and the like. When an input operation is performed on the operation unit 12, information corresponding to the input operation is input to the control unit 11.

The display unit 13 displays various information such as a drawing of the designed building and the result of stress calculation processing, and includes a display. When various information is input to the display unit 13 from the control unit 11, the input information is displayed on the display unit 13.

The storage unit 14 stores a control program for executing design processing and stress calculation processing, and a database for storing various information necessary for stress calculation.

Next, the flow of the stress calculation process executed by the stress calculation device 10 will be described with reference to FIG. FIG. 2 is a functional block diagram showing a stress calculation process. Each block 31 to 33 and 46 in FIG. 2 is realized by the control unit 11.

As shown in FIG. 2, the building design unit 31 designs a building based on an input operation to the operation unit 12 by a user such as a designer. In the stress calculation device 10, the stress is calculated for the unit type building X (design building) designed by the building design unit 31.

Here, the unit type building X will be briefly described with reference to FIG. FIG. 3 is a perspective view showing an outline of the unit type building X. As shown in FIG. 3, the unit type building X is formed by combining a plurality of building units 20 with each other. In the present embodiment, a two-story building is assumed as the unit-type building X, and the unit-type building X is provided with building units 20 on the first floor and the second floor, respectively. The building unit 20 includes four pillars 21 arranged at its four corners, and four ceiling girders 22 and floor girders 23 that connect the upper end and the lower end of each pillar 21. In the building unit 20, a rectangular parallelepiped frame body 26 is formed by the pillars 21, ceiling girders 22, and floor girders 23, and ceiling materials, floor materials, roofing materials, and the like are attached to the frame bodies 26. In the frame body 26, the ceiling girder 22 and the floor girder 23 correspond to “beams”, respectively. Further, in the unit type building X, the frame body 27 (framework) is formed by the frame body 26 of each building unit 20. The reference numeral K in FIG. 3 is a foundation that supports the building X from below.

Returning to the description of FIG. 2, the frame structure disassembling unit 32 is based on the design data of the unit type building X (hereinafter, also abbreviated as building X) designed by the building design unit 31, the frame structure of the building X. 27 is disassembled into a plurality of vertical frames F having the same height as the frame 27 and the same width as the frame 26. FIG. 4 shows a state in which a part of the frame 27 is disassembled into a vertical frame F, and the vertical frame F will be described below based on FIG. The frame disassembling unit 32 corresponds to the frame disassembling means.

As shown in FIG. 4, the frame structure 27 includes a plurality of (specifically, four) frame body laminated portions 28 in which a plurality of (specifically, two) frame bodies 26 are vertically laminated. .. Each of these frame body laminated portions 28 has the same height as the frame structure 27, and is arranged side by side with each other. In the frame body laminated portion 28, vertical frames F are formed on each of the four side surface portions thereof. The vertical frame F is formed in a plane extending in the vertical direction, and includes columns 21, ceiling girders 22 and floor girders 23 in the frame body 26 (of the building unit 20) on the first floor, and (building unit 20) on the second floor. ) Each pillar 21 in the frame body 26, the ceiling girder 22 and the floor girder 23 are included. In the example of FIG. 4, the vertical frames F1 and F3 are formed on the side surface portion on the long side side of the predetermined frame body laminated portion 28, and the vertical frames F2 and F4 are formed on the side surface portion on the short side side of the frame body laminated portion 28. It is formed.

The vertical frame F has a rigid frame structure (pure rigid frame structure) in which the columns 21 and the girders 22 and 23 are rigidly joined. Further, in the figure, the pillars 21 of the first floor portion and the second floor portion constituting the vertical frame F are shown in a state of being vertically separated from each other, but in reality, the pillars 21 are joined to each other. There is. In the following description, each pillar 21, each ceiling girder 22 and each floor girder 23 constituting the vertical frame F are also referred to as frame members.

As described above, since the four vertical frames F are formed in the frame laminated portion 28, in the frame disassembling portion 32, the frame 27 is formed into four vertical frames F for each frame laminated portion 28. It is disassembled. Therefore, in the example of FIG. 4 in which the frame 27 includes four frame laminated portions 28, the frame 27 is decomposed into a total of 16 vertical frames F. In this way, in the frame structure disassembling unit 32, the frame structure 27 is disassembled into a plurality of vertical frames F having the same width (unit width) as the building unit 20 (frame body 26).

Returning to the description of FIG. 2, the frame stress calculation unit 33 calculates the stress generated in the vertical frame F for each vertical frame F decomposed by the frame decomposition unit 32. Hereinafter, the frame stress calculation process performed by the frame stress calculation unit 33 will be described with reference to FIG. FIG. 5 is a functional block diagram showing a frame stress calculation process. The frame stress calculation process is sequentially performed for each vertical frame F.

As shown in FIG. 5, in the frame stress calculation process, first, the target frame determination unit 34 determines which of the vertical frames F decomposed by the frame decomposition unit 32 is to calculate the stress. decide. That is, here, the vertical frame F for which the stress is calculated is determined. Hereinafter, this vertical frame F is referred to as a target frame Ft.

The vertical load stress calculation unit 35 calculates the stress generated in the target frame Ft when the vertical load acts on the target frame Ft. Here, the vertical load acting on the target frame Ft (and by extension, the vertical frame F) will be described with reference to FIG. FIG. 6 is a diagram for explaining a vertical load acting on the vertical frame F.

As described above, the vertical frame F includes the ceiling girder 22 and the floor girder 23 in the first floor portion, and the ceiling girder 22 and the floor girder 23 in the second floor portion. In the vertical frame F, a vertical load acts on each of the ceiling girders 22 and each floor girder 23 from the ceiling, floor, roof, and the like. That is, in the vertical frame F, each ceiling girder 22 and each floor girder 23 are at load positions on which a vertical load acts.

FIG. 6A shows an actual load state in which the actual vertical loads f1 to f4 act as vertical loads on the girders 22 and 23 (load positions), respectively. In FIG. 6A, the actual vertical load f1 acts on the ceiling girder 22 (hereinafter referred to as 22A) on the second floor, and the actual vertical load f2 acts on the floor girder 23 (hereinafter referred to as 23A) on the second floor. The actual vertical load f3 acts on the ceiling girder 22 (hereinafter referred to as 22B) on the first floor, and the actual vertical load f4 acts on the floor girder 23 (hereinafter referred to as 23B) on the first floor. In FIG. 6A, each actual vertical load f1 to f4 is indicated by one arrow line, but in reality, each actual vertical load f1 to f4 is an evenly distributed load of each girder 22, It is supposed to act on 23.

6 (b) to 6 (e) show a state in which the actual vertical load is applied only to one of the girders 22 and 23 (each load position) of the vertical frame F (hereinafter, simply). It is also called a one-load state). Specifically, FIG. 6B shows a state in which the actual vertical load f1 acts only on the ceiling girder 22A on the second floor, and FIG. 6C shows the actual vertical load only on the floor girder 23A on the second floor. The state in which the load f2 is applied is shown, FIG. 6 (d) shows the state in which the actual vertical load f3 is applied only to the ceiling girder 22B on the first floor, and FIG. 6 (e) shows the floor on the first floor. It shows a state in which the actual vertical load f4 acts only on the girder 23B.

Here, assuming that the stress generated in the vertical frame F in each of the single load states shown in FIGS. 6 (b) to 6 (d) is m1 to m4, the vertical frame is in the actual load state (state of FIG. 6A). The stress mt generated in F is obtained as mt = m1 + m2 + m3 + m4. Therefore, in the vertical load stress calculation unit 35, paying attention to this point, first, the stress m1 to occur in the vertical frame F (target frame Ft) for each single load state shown in FIGS. 6 (b) to 6 (d). The stress mt in the actual load state is calculated by calculating m4 and then adding the calculated stresses m1 to m4. In the following, the vertical load stress calculation process by the vertical load stress calculation unit 35 will be described. The stress calculation unit 35 under vertical load corresponds to the element calculation means.

In the vertical load stress calculation process, first, the single load stress calculation unit 51 calculates the stress generated in the target frame Ft for each single load state (that is, each state of FIGS. 6B to 6E). Performs stress calculation processing under a single load. In the following, this stress calculation process under a single load will be described with reference to FIG. 7. FIG. 7 is a functional block diagram showing a stress calculation process under a single load. It should be noted that this process is sequentially performed for each single load state. Further, the stress calculation unit 51 under a single load corresponds to the element calculation means under a single load.

As shown in FIG. 7, in the stress calculation process under a single load, the single load state determination unit 52 first determines the stress generated in the target frame Ft under any single load state among the single load states. Decide whether to calculate.

The load position specifying unit 53 specifies which of the girders 22 and 23 (load position) on which the actual vertical load acts in the single load state determined by the single load state determining unit 52. For example, when the single load state determined by the single load state determination unit 52 is the state shown in FIG. 6D, the girders 22 and 23 on which the actual vertical load acts are specified as the ceiling girder 22B. In the following, the girders 22 and 23 specified by the load position specifying portion 53 will be referred to as the specified girder H.

The actual vertical load acquisition unit 54 acquires the actual vertical load acting on the specific girder H (load position). The actual vertical load acquisition unit 54 has a plurality of functional blocks 55 to 59, and acquires the actual vertical load by using each of the functional blocks 55 to 59. The actual vertical load acquisition unit 54 corresponds to the actual load acquisition means.

In the actual vertical load acquisition unit 54, the load member specifying unit 55 specifies a load member that applies a vertical load to the specific girder H. The load member is specified based on the design data of the building X. Examples of the load member include a floor material, a ceiling material, a roof material, and the like. When the specific girder H is the ceiling girder 22B, for example, the ceiling material is specified as a load member. Further, the load member specifying portion 55 corresponds to the load member specifying means.

Based on the design data of the building X, the load width calculation unit 56 calculates the width of the portion of the load member specified by the load member identification unit 55 on which the specific girder H bears the vertical load as the load width. Here, this burden width will be described with reference to FIG. FIG. 8 is a plan view for explaining the load width. In the figure, it is assumed that the ceiling girder 22B constituting the vertical frame F1 of the frame 27 is the ceiling girder on the long side, and in the following, this ceiling girder 22B is specified as the specific girder H. The load width of the load member borne by the specific girder H will be described. The burden width calculation unit 56 corresponds to the burden width calculation means.

As shown in FIG. 8, the building unit 20 including the specific girder H is provided with a ceiling material T on the ceiling portion thereof. The ceiling material T is a load member that applies a vertical load to the specific girder H. Of the ceiling material T, the portion where the specific girder H bears the vertical load is the load-bearing portion, and in FIG. 8, the load-bearing portion is shown with hatching. The width of the load-bearing portion (the length in the direction orthogonal to the specific girder H) is the load width W of the ceiling material T, and in the example of FIG. 8, the load width W is the width of the ceiling material T (in other words, the frame). It is about half of the width of 26).

In the load coefficient database 57, load coefficients (area loads) representing the magnitude of the vertical load (weight) per unit area of the load members are stored for each of the plurality of types of load members used by the building maker. The load coefficient database 57 is constructed by the storage unit 14.

The load coefficient acquisition unit 58 reads the load coefficient of the load member specified by the load member identification unit 55 from the load coefficient database 57 and acquires it. For example, in the example of FIG. 8, since the load member is the ceiling material T, the load coefficient of the ceiling material T is acquired from the load coefficient database 57. The load coefficient acquisition unit 58 corresponds to the load coefficient acquisition means.

The actual vertical load calculation unit 59 is a specific girder from the load member based on the load width W of the load member calculated by the load width calculation unit 56 and the load coefficient of the load member acquired by the load coefficient acquisition unit 58. Calculate the vertical load acting on H. In this case, the actual vertical load calculation unit 59 calculates the vertical load from the load member by multiplying the load width W and the load coefficient. The actual vertical load calculating unit 59 corresponds to the actual vertical load calculating means.

The actual vertical load acquisition unit 54 acquires (calculates) the actual vertical load acting on the specific girder H based on the vertical load calculated by the actual vertical load calculation unit 59. Specifically, when there are a plurality of load members that apply a vertical load to the specific girder H, the actual vertical load acquisition unit 54 uses the above-mentioned functional blocks 55 to 59 for each of the load members to load the load. The vertical load acting on the specific girder H is calculated from the member. Then, the calculated vertical loads from each load member are integrated, and the integrated vertical load is calculated as the actual vertical load acting on the specific girder H.

Subsequently, the stress database 60 under a unit vertical load will be described.

In the unit vertical load stress database 60 (hereinafter, abbreviated as stress database 60), the stress generated in the vertical frame F when the unit vertical load is applied to the vertical frame F for each of a plurality of types of vertical frames F. It is stored as stress under unit vertical load (corresponding to element under unit load). The unit vertical load stress is obtained in advance by stress analysis using a computer for each vertical frame F, and it is stored in the stress database 60 for each vertical frame F. Specifically, in the stress database 60, for a plurality of types of vertical frames F, when a unit vertical load is applied to the girders (only) for each girder 22 and 23 (each load position), the vertical frame F is subjected to. The generated stress is stored as the unit vertical load stress. More specifically, when a unit vertical load is applied to the girder, the stress generated in each frame member (column 21, girder 22, 23) constituting the vertical frame F is stored as the stress under the unit vertical load. The stress database 60 is constructed by the storage unit 14. Further, the stress database 60 corresponds to the element database at the time of unit load.

As described above, the stress database 60 stores the stress under vertical load as a unit for a plurality of types of vertical frames F. The plurality of types of vertical frames F include a plurality of vertical frames F having different sizes (frame sizes). Specifically, a plurality of vertical frames F having different frame widths (for example, the vertical frames F1 and F2 in FIG. 4) and a plurality of vertical frames F having different frame heights are included. Further, for the vertical frame F having the same size (frame size), a plurality of vertical frames having different cross-sectional performances of the frame members (columns 21, girders 22, 23) are also included.

The unit vertical load stress acquisition unit 61 reads out the unit vertical load stress of the target frame Ft from the stress database 60 and acquires it. Specifically, the unit vertical load stress corresponding to the specific girder H (load position) of the target frame Ft is read out and acquired.

The specific single load stress calculation unit 62 acquires the actual vertical load (actual vertical load acting on the specific girder H) acquired by the actual vertical load acquisition unit 54 and the unit vertical load stress acquisition unit 61. Based on the unit vertical load stress, the stress generated in the target frame Ft (hereinafter, also referred to as single load stress) is calculated under the single load state determined by the single load state determination unit 52. To do. In this case, the specific single load stress calculation unit 62 calculates the single load stress by multiplying the actual vertical load by the unit vertical load stress. Specifically, the specific single load stress calculation unit 62 calculates the stress generated in each frame member constituting the vertical frame F (stress under a single load) under the single load state.

After the specific single load stress calculation unit 62 calculates the single load stress, it returns to the single load state determination unit 52 and returns to the next single load state (for example, the state of FIG. 6C). One load stress calculation process (functional blocks 52 to 62) is performed. In this way, the stress calculation process under a single load is performed for all the single load states (all the states shown in FIGS. 6B to 6E), and the stress under a single load under each single load state is performed. Is calculated. As a result, the process by the stress calculation unit 51 under a single load is completed.

Returning to FIG. 5, after the processing by the single load stress calculation unit 51, the actual load stress calculation unit 63 integrates each single load stress calculated by the single load stress calculation unit 51. As a result, the stress generated in the target frame Ft under the actual load state (state in FIG. 6A) is calculated. The stress calculation unit 63 under actual load corresponds to the element calculation means under actual load.

In the vertical load stress evaluation unit 36, whether the stress of the target frame Ft calculated by the vertical load stress calculation unit 35 (specifically, the stress calculation unit 63 under actual load) exceeds a predetermined allowable stress. Judge whether or not. Specifically, it is determined whether or not the stress of each frame member (column 21, girder 22, 23) constituting the vertical frame F exceeds the allowable stress. The stress evaluation unit 36 under vertical load corresponds to the element evaluation means.

When the stress of the target frame Ft exceeds the allowable stress, the frame changing portion 37 changes the target frame Ft to a vertical frame F having a higher strength (frame strength). Explaining this change, a plurality of types of vertical frames F having different frame intensities are stored in the frame database 38. Specifically, the frame database 38 stores a plurality of types of vertical frames F having different frame strengths for the vertical frames F having the same configuration (frame size and frame shape). For example, the frame members (column 21, girder 22) are stored. , 23) A plurality of types of vertical frames F having different cross-sectional performances are stored. Then, the frame changing unit 37 reads and changes the vertical frame F having a higher frame strength from the frame database 38. The frame changing unit 37 corresponds to the frame changing means. Further, the frame database 38 is constructed by the storage unit 14.

The method of changing the target frame Ft in the frame changing unit 37 is not necessarily limited to the above method. For example, among the frame members constituting the target frame Ft, only the frame member whose stress exceeds the allowable stress is changed to a high-strength frame member, whereby the target frame Ft is changed to a higher-strength vertical frame F. You may try to do it.

When the target frame Ft is changed to a higher strength vertical frame F by the frame changing unit 37, the changed vertical frame F is set as the target frame Ft, and the stress calculation unit 35 under vertical load again sets the target frame Ft to the target frame Ft. Calculate the resulting stress. Then, the stress evaluation unit 36 under vertical load determines whether or not the calculated stress exceeds the allowable stress. In this way, the processing by each functional block 35 to 37 is repeated until the stress evaluation unit 36 under vertical load determines that the stress of the target frame Ft is equal to or less than the allowable stress.

When it is determined that the stress of the target frame Ft is equal to or less than the allowable stress, the process proceeds to the process by the horizontal load stress calculation unit 41. The horizontal load stress calculation unit 41 calculates the stress generated in the target frame Ft when the horizontal load acts on the target frame Ft. Here, the horizontal load acting on the target frame Ft (and thus the vertical frame F) will be described with reference to FIG. FIG. 9 is a diagram for explaining a horizontal load acting on the vertical frame F.

On the vertical frame F, horizontal loads act on the floor height of the second floor portion and the roof height of the second floor portion, respectively. That is, in the vertical frame F, the floor height and the roof height of the second floor are the load positions on which the horizontal load acts. FIG. 9A shows an actual load state in which the actual horizontal loads f5 and f6 act as horizontal loads on the second floor roof height E1 and the second floor floor height E2 of the vertical frame F, respectively. In FIG. 9A, the actual horizontal load f5 acts on the second floor roof height E1 and the actual horizontal load f6 acts on the second floor floor height E2.

9 (b) and 9 (c) show a state in which the actual horizontal load is applied to only one of the second floor roof height E1 and the second floor height E2 of the vertical frame F, that is, a single load state. There is. Specifically, FIG. 9B shows a state in which the actual horizontal load f5 acts only on the second floor height E1 of the vertical frame F, and FIG. 9C shows only the second floor height E2. It shows the state in which the actual horizontal load f6 is applied.

Here, assuming that the stress generated in the vertical frame F in each single load state shown in FIGS. 9 (b) and 9 (c) is m5 and m6, respectively, the vertical frame in the actual load state (state in FIG. 9A). The stress ms generated in F is obtained as ms = m5 + m6. Therefore, the stress calculation unit 41 under horizontal load also first calculates the stresses m5 and m6 generated in the vertical frame F for each single load state shown in FIGS. 9B and 9C, and then each of the calculated stresses m5 and m6. The stress ms under the actual load state is calculated by adding the stresses m5 and m6. In the following, the horizontal load stress calculation process by the horizontal load stress calculation unit 41 will be described with reference to FIG. The horizontal load stress calculation unit 41 corresponds to the element calculation means.

In the horizontal load stress calculation process, first, the single load stress calculation unit 65 calculates the stress generated in the target frame Ft for each single load state (that is, each state of FIGS. 9B and 9C). Performs stress calculation processing under a single load. In the following, this stress calculation process under a single load will be described with reference to FIG. FIG. 10 is a functional block diagram showing a stress calculation process under a single load. It should be noted that this process is sequentially performed for each single load state. Further, the stress calculation unit 65 under a single load corresponds to the element calculation means under a single load.

As shown in FIG. 10, in the stress calculation process under a single load, the single load state determination unit 66 first determines the stress generated in the target frame Ft under any single load state among the single load states. Decide whether to calculate.

The load position specifying unit 67 determines which of the second floor roof height E1 and the second floor floor height E2 is the load position on which the actual horizontal load acts in the single load state determined by the single load state determining unit 66. Identify. For example, when the single load state determined by the single load state determination unit 66 is the state shown in FIG. 9B, the load position on which the actual horizontal load acts is specified as the second floor roof height E1. In the following, the load position specified by the load position specifying unit 67 will be referred to as a specific load position.

The actual horizontal load acquisition unit 68 acquires the actual horizontal load acting on the specific load position. In this case, the actual horizontal load acquisition unit 68 acquires the actual horizontal load based on the weight of the building X and the like. The actual horizontal load acquisition unit 68 corresponds to the actual load acquisition means.

In the unit horizontal load stress database 70 (hereinafter, abbreviated as stress database 70), the stress generated in the vertical frame F when a unit horizontal load is applied to the vertical frame F for each of a plurality of types of vertical frames F. It is stored as stress under unit horizontal load (corresponding to element under unit load). The unit horizontal load stress is obtained in advance for each vertical frame F by stress analysis using a computer, and it is stored in the stress database 70 for each vertical frame F. Specifically, in the stress database 70, the stress generated in the vertical frame F when a (only) unit horizontal load is applied to the load position for each load position E1 and E2 for a plurality of types of vertical frames F. The unit is stored as stress under horizontal load. More specifically, the stress generated in each frame member (column 21, girder 22, 23) constituting the vertical frame F when a unit horizontal load is applied to the load position is stored as the unit horizontal load stress. The stress database 70 is constructed by the storage unit 14. Further, the stress database 70 corresponds to the element database at the time of unit load.

The unit horizontal load stress acquisition unit 71 reads out the unit horizontal load stress of the target frame Ft from the stress database 70 and acquires it. Specifically, the unit horizontal load stress corresponding to the specific load position E1 (E2) of the target frame Ft is read out and acquired.

The specific single load stress calculation unit 72 acquires the actual horizontal load (actual horizontal load acting on the specific load position) acquired by the actual horizontal load acquisition unit 68 and the unit horizontal load stress acquisition unit 71. Based on the unit horizontal load stress, the stress generated in the target frame Ft (hereinafter, also referred to as single load stress) is calculated under the single load state determined by the single load state determination unit 66. To do. In this case, the specific single load stress calculation unit 72 calculates the single load stress by multiplying the actual horizontal load and the unit horizontal load stress. Specifically, the specific single load stress calculation unit 72 calculates the stress generated in each frame member constituting the vertical frame F (stress under a single load) under the single load state.

After the specific single load stress calculation unit 72 calculates the single load stress, it returns to the single load state determination unit 66 and returns to the next single load state (for example, the state of FIG. 9C). One load stress calculation process (functional blocks 66 to 68, 70 to 72) is performed. In this way, for each single load state (each state of FIGS. 9B and 9), the stress calculation process under a single load is performed, and the stress under a single load under each single load state is calculated. To do. As a result, the process by the stress calculation unit 65 under a single load is completed.

Returning to FIG. 5, after the processing by the single load stress calculation unit 65, the actual load stress calculation unit 74 integrates each single load stress calculated by the single load stress calculation unit 65. As a result, the stress generated in the target frame Ft in the actual load state (state in FIG. 9A) is calculated. The stress calculation unit 74 under actual load corresponds to the element calculation means under actual load.

The short-term load stress calculation unit 42 was calculated by the vertical load stress calculation unit 35 and the horizontal load stress calculation unit 41 (specifically, the actual load stress calculation unit 74). By adding the stress under horizontal load, the stress under short-term load generated in the target frame Ft is calculated.

The short-term load stress evaluation unit 43 determines whether or not the short-term load stress of the target frame Ft calculated by the short-term load stress calculation unit 42 does not exceed a predetermined allowable stress. Specifically, it is determined whether or not the stress under short-term load of each frame member (column 21, girder 22, 23) constituting the vertical frame F does not exceed the allowable stress.

When the stress under short-term load of the vertical frame F exceeds the allowable stress, the frame changing portion 45 changes the target frame Ft to a vertical frame F having a higher strength (frame strength). This change is also made by reading the vertical frame F having a higher frame strength from the frame database 38 and changing the same as the change in the frame changing unit 37. Of the frame members constituting the target frame Ft, only the frame members whose stress exceeds the allowable stress are changed to high-strength frame members, thereby changing the target frame Ft to a higher-strength vertical frame F. You may try to do it.

When the target frame Ft is changed to a higher strength vertical frame F by the frame changing unit 45, the changed vertical frame F is set as the target frame Ft, and the processing is performed again by the vertical load stress calculating unit 35. Then, after the processing by the calculation unit 35, each processing is performed in the subsequent functional blocks 36, (37), 41, 42, and the stress under short-term load generated in the target frame Ft is calculated. After that, the short-term stress evaluation unit 43 determines whether or not the calculated short-term stress stress exceeds the allowable stress. In this way, the processing by each functional block 35 to 37, 41 to 43, 45 is repeated until the short-term load stress evaluation unit 43 determines that the short-term load stress of the target frame Ft is equal to or less than the allowable stress. ..

When it is determined that the stress under short-term load of the target frame Ft is equal to or less than the allowable stress, the frame stress calculation process for the target frame Ft ends. In this case, the frame stress calculation unit 33 performs frame stress calculation processing (functional blocks 34 to 38, 41 to 43, 45) for the next vertical frame F. In this way, the frame stress calculation process is performed for each vertical frame F, and the stress under short-term load of each vertical frame F is calculated. As a result, the process by the frame stress calculation unit 33 is completed.

Returning to the description of FIG. 2, the output unit 46 outputs the result of the frame stress calculation process to the display unit 13 after the process by the frame stress calculation unit 33. As a result, the result of the frame stress calculation process is displayed on the display unit 13. Further, the output unit 46 outputs the result of the frame stress calculation process to a printer (not shown).

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

The frame 27 of the unit type building was decomposed into a plurality of vertical frames F having the same width as the frame 26, and the decomposed vertical frame F was used as the target frame Ft, and the stress generated in the target frame Ft was calculated. Specifically, the stress generated in the target frame Ft when a vertical load acts on the target frame Ft was calculated. In calculating the stress generated in the target frame Ft, the unit vertical load stress database 60 was used. In the stress database 60, for a plurality of types of vertical frames F, the stress generated in the frame F when a unit vertical load is applied to the vertical frame F is stored in advance as the stress at the time of the unit vertical load. Then, when calculating the stress generated in the target frame Ft, it acts on the unit vertical load stress of the target frame Ft stored in the database 60 and the target frame Ft acquired by the actual vertical load acquisition unit 54. The stress generated in the target frame Ft is calculated based on the actual vertical load. In this case, since the stress generated in each target frame Ft (at the time of vertical load) can be calculated without stress analysis, the stress generated in the frame 27 (at the time of vertical load) can be calculated relatively easily.

Specifically, first, the stress calculation unit 51 under a single load calculates the stress generated in the target frame Ft under each single load state (stress under a single load), and then the stress under an actual load. The calculation unit 63 integrates the calculated stresses under a single load and calculates the stress generated in the target frame Ft in the actual load state. In addition, the stress database 60 was used in calculating the stress under a single load. In the stress database 60, for a plurality of types of vertical frames F, when a unit vertical load is applied to the girders (load positions) for each girder 22 and 23 (each load position), the stress generated in the same frame F is generated. The unit is stored as stress under vertical load. Then, in calculating the stress under a single load, for each single load state, the actual vertical load acting on the girder (load position) corresponding to the single load state acquired by the actual vertical load acquisition unit 54 is used. The single load stress is calculated based on the unit vertical load stress corresponding to the girder (load position) stored in the stress database 60. In this case, when an actual vertical load acts on the vertical frame F at a plurality of load positions, the stress generated in the vertical frame F can be preferably calculated.

Each of the above-mentioned effects was an effect when calculating the stress generated (at the time of vertical load) on the target frame Ft when a vertical load acts on the target frame Ft, but a horizontal load acts on the target frame Ft. In this case, the same effect is obtained when calculating the stress generated in the target frame Ft (at the time of horizontal load). Although a detailed explanation in that case is omitted here, when calculating the stress generated in the target frame Ft (at the time of horizontal load), the unit horizontal load stress of the target frame Ft stored in the stress database 70 is used. The stress generated in the target frame Ft is calculated based on the actual horizontal load applied to the target frame Ft acquired by the actual horizontal load acquisition unit 68.

Based on the design data of the building X, a load member that applies a vertical load to the target frame Ft was specified, and the vertical load acting on the target frame Ft was calculated from the specified load member. In the calculation, the load coefficient database 57 was used. Specifically, the vertical load was calculated based on the load width W of the load member calculated by the load width calculation unit 56 and the load coefficient of the load member stored in the load coefficient database 57. In this case, since the actual vertical load acting on the target frame Ft can be acquired based on the calculated vertical load, compared with the case where the actual vertical load acting on the target frame Ft is acquired based on the input operation. The actual vertical load can be easily obtained.

It is determined whether or not the stress of the target frame Ft calculated by the vertical load stress calculation unit 35 exceeds the allowable stress, and if the result of the determination exceeds the allowable stress, the frame change unit 37 determines. , The target frame Ft is changed to a vertical frame F having a higher frame strength than that. Then, the changed vertical frame F is set as the target frame Ft, and the stress generated in the target frame Ft is calculated again by the vertical load stress calculation unit 35. In this case, even if the initial target frame Ft has insufficient strength, the target frame can be redesigned to satisfy a predetermined strength.

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

(1) In the above embodiment, the actual vertical load acquisition unit 54 acquires the actual vertical load acting on the specific girder H based on the vertical load from the load member calculated by the actual vertical load calculation unit 59. However, you may change this. For example, the actual vertical load acting on the specific girder H may be input by the operation unit 12, and the actual vertical load may be acquired by the actual vertical load acquisition unit 54 based on the input operation by the operation unit 12. Similarly to this, the actual horizontal load acquisition unit 68 may also acquire the actual horizontal load based on the input operation by the operation unit 12.

(2) In the above embodiment, the stress calculation system in the present invention is configured by one device (specifically, the stress calculation device 10), but this is changed and connected to each other via a network such as the Internet. It may be composed of a plurality of devices. For example, it is conceivable that the stress calculation system is composed of a design device having a building design function and a calculation device having a stress calculation function for calculating the stress of the vertical frame F. In this case, the building X is designed by the design device (building design unit 31), and the design data of the designed building X is transmitted to the calculation device (frame structure decomposition unit 32, frame stress calculation unit 33, etc.) through the network. Then, it is conceivable that the calculation device calculates the stress based on the transmitted design data.

(3) In the above embodiment, the calculation system of the present invention is embodied as a stress calculation device 10 (stress calculation system) for calculating the stress generated in the frame 27, but this is changed to the calculation system of the present invention. May be embodied as a deflection calculation device (deflection calculation system) for calculating the deflection generated in the frame 27. In this case, the vertical frame F decomposed by the frame structure disassembling unit 32 is set as the target frame Ft, and the deflection generated in the target frame Ft is calculated. For example, when a vertical load acts on the target frame Ft, it is conceivable to calculate the deflection generated in the target frame Ft.

In this case, for each of the plurality of types of vertical frames F, a unit for storing the deflection generated in the vertical frame F when a unit vertical load is applied to the vertical frame F as a unit vertical load deflection (corresponding to a unit load element). A deflection database under vertical load (hereinafter referred to as the deflection database) is provided. In this case, the deflection under a unit vertical load is obtained in advance by stress analysis using a computer, and it is stored in the deflection database (corresponding to the element database under a unit load). Then, in the vertical load deflection calculation unit (corresponding to the element calculation means), the actual vertical load acting on the target frame Ft acquired by the actual vertical load acquisition unit 54 and the unit of the target frame Ft stored in the deflection database. The deflection generated in the target frame Ft is calculated based on the deflection under a vertical load.

(4) By the way, when the deflection generated in the vertical frame F in each single load state shown in FIGS. 6 (b) to 6 (e) is δ1 to δ4, respectively, the vertical frame is in the actual load state shown in FIG. 6 (a). The deflection δt generated in F is obtained as δt = δ1 + δ2 + δ3 + δ4. Therefore, in the configuration of (3) above, when the deflection calculation process by the deflection calculation unit under vertical load is performed, first, the deflection calculation unit under single load (corresponding to the element calculation means under single load) is used for each single load state. The deflection generated in the target frame Ft under a single load state is calculated as the deflection under a single load (corresponding to the element at the time of a single load), and then the deflection calculation unit at the actual load (corresponding to the element calculation means at the actual load). ), The deflection generated in the target frame Ft under the actual load state may be calculated by integrating the deflection under each single load calculated above.

In this case, in the deflection database, for each of the girders 22 and 23 (each load position), for a plurality of types of vertical frames F, the deflection that occurs in the vertical frame F when a (only) unit vertical load is applied to the girders is displayed. Unit Store as deflection under vertical load. Then, in the deflection calculation unit under a single load, for each single load state, the actual vertical load acting on the load position corresponding to the single load state acquired by the actual vertical load acquisition unit 54 is stored in the deflection database. The deflection under a single load is calculated based on the unit deflection at the time of a vertical load corresponding to the corresponding load position. In this case, when an actual vertical load acts on the vertical frame F at a plurality of load positions, the deflection generated in the vertical frame can be preferably calculated.

(5) In the configuration of (3) above, the vertical load deflection evaluation unit (which determines whether or not the deflection of the target frame Ft calculated by the vertical load deflection calculation unit exceeds a predetermined allowable value. (Equivalent to element evaluation means) is provided, and when it is determined that the deflection of the target frame Ft calculated by the evaluation unit exceeds the permissible value, the frame changing unit 37 makes the target frame Ft stronger than that. It may be changed to a vertical frame F having a high height. Then, the changed vertical frame F may be set as the target frame Ft, and the deflection calculation unit under vertical load may calculate the deflection generated in the target frame Ft. In this case as well, when the initial target frame Ft has insufficient strength, the target frame can be redesigned to satisfy a predetermined strength.

10 ... Stress calculation device, 11 ... Control unit, 14 ... Storage unit, 20 ... Building unit, 21 ... Pillar, 22 ... Ceiling girder as beam, 23 ... Floor girder as beam, 26 ... Frame, 27 ... Frame , 32 ... Frame disassembly unit as a frame disassembly means, 35 ... Vertical load stress calculation unit as an element calculation means, 36 ... Vertical load stress evaluation unit as an element evaluation means, 37 ... Frame as a frame changing means Change unit, 41 ... Horizontal load stress calculation unit as element calculation means, 51 ... Single load stress calculation unit as single load element calculation means, 54 ... Actual vertical load acquisition unit as actual load acquisition means, 55 ... Load member identification unit as load member specifying means, 56 ... Load width calculation unit as load width calculation means, 57 ... Load coefficient database, 58 ... Load coefficient acquisition unit as load coefficient acquisition means, 59 ... Actual vertical load Actual vertical load calculation unit as a calculation means, 60 ... Unit vertical load stress database as a unit load element database, 63 ... Actual load stress calculation unit as an actual load element calculation means, 65 ... Single load element Single load stress calculation unit as calculation means, 68 ... Actual horizontal load acquisition unit as actual load acquisition means, 70 ... Unit horizontal load stress database as unit load element database, 74 ... Actual load element calculation means Stress calculation unit under actual load as.

Claims (5)

A unit-type building in which a plurality of building units having a frame in which columns and beams are connected in a rectangular shape are combined and a frame is formed by the frame of each building unit. A calculation system for calculating stress or deflection generated in a frame.
Based on the design data of the building, the frame disassembling means for disassembling the frame into a plurality of vertical frames having the same height as the frame and the same width as the frame.
A vertical frame decomposed by the frame decomposition means is used as a target frame, and an element calculation means for calculating an element that is either stress or deflection generated in the target frame is provided.
The element calculation means
For a plurality of types of the vertical frames, the elements generated in the vertical frames when a unit load is applied to the vertical frames are obtained in advance as unit load elements, and the unit load elements of each of the vertical frames are stored. The unit load element database and
The actual load acquisition means for acquiring the actual load acting on the target frame is provided.
Based on the actual load acting on the target frame acquired by the actual load acquisition means and the unit load element of the target frame stored in the unit load element database, the element generated in the target frame is generated. A stress or deflection calculation system, characterized in that it is calculated. The actual load acquisition means acquires the actual vertical load acting on the target frame.
In the unit load element database, for the plurality of types of vertical frames, the elements generated in the vertical frame when the unit vertical load as the unit load is applied to the vertical frame are stored as the unit load elements. Has been
The element calculation means is based on the actual vertical load acting on the target frame acquired by the actual load acquisition means and the unit load element of the target frame stored in the unit load element database. The stress or deflection calculation system according to claim 1, wherein the element generated in the target frame is calculated. The actual load acquisition means
A load coefficient database that stores load coefficients that represent the magnitude of the vertical load per unit area for each of a plurality of types of load members that apply a vertical load to the vertical frame, and a load coefficient database.
Based on the design data, a load member specifying means for specifying the load member that applies a vertical load to the target frame, and
Based on the design data, the load width calculating means for calculating the width of the portion of the load member specified by the load member specifying means as the load width for the portion where the target frame bears the vertical load.
Based on the load width of the load member calculated by the load width calculation means and the load coefficient of the load member stored in the load coefficient database, the vertical load acting on the target frame from the load member is calculated. Actual vertical load calculation means to calculate and
The stress or deflection calculation system according to claim 2, wherein the system is provided with. When there are a plurality of load positions on which the load acts on the vertical frame, the state in which the actual load acts on each of these load positions is the actual load state.
The state in which the actual load acts only on any one of the above load positions is a single load state.
The element calculation means
For each single load state with different load positions, a single load element calculation means for calculating the element generated in the target frame under the single load state as a single load element.
It is provided with an actual load element calculation means for calculating the element generated in the target frame in the actual load state by integrating each single load element calculated by the single load element calculation means.
The actual load acquisition means calculates the actual load acting on each of the load positions of the target frame.
In the unit load element database, the elements generated in the vertical frame when the unit load is applied to the load position at each load position of the plurality of types of the vertical frames are the unit load elements. Is remembered as
The single load element calculation means has, for each of the single load states, the actual load acting on the load position corresponding to the single load state acquired by the actual load acquisition means and the unit load. The stress according to any one of claims 1 to 3, wherein the single load element is calculated based on the unit load element corresponding to the load position stored in the element database. Or a deflection calculation system. An element evaluation means for determining whether or not the element of the target frame calculated by the element calculation means exceeds a predetermined allowable value, and
When the element evaluation means determines that the element exceeds the permissible value, the element evaluation means includes a frame changing means for changing the target frame to a vertical frame having higher strength.
The element calculation means according to any one of claims 1 to 4, wherein the vertical frame changed by the frame changing means is set as a target frame, and the element generated in the target frame is calculated. Stress or deflection calculation system.

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