JP2002259462A - Device and method for displaying strength of building construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for supplying a building structural information which outputs strength data from a host station to a substation in order to perform the safety assessment of a variety of building structural information by means of a computer system. SOLUTION: A three-dimensional model is virtually constructed in a host computer 10 on the basis of shape data and relative position data (hereinafter referred to as the shape data, etc.), and auxiliary data in a CAD program. Then, two-dimensional diagrams drawn on a plane with respect to building construction materials selected from the model are displayed on a monitor 26. The strength of building construction materials is calculated on the basis of data selected from the above data to be displayed on the monitor 26 in the same way. The strength data of the calculated building construction materials are outputted to a first computer 11, and the safety assessment of building construction is performed at the first computer 11 side on the basis of the strength data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structural design of a building, and more particularly to a structural strength display device for displaying the strength of a structural member on a display screen assuming that the structural member is burned by fire. The present invention relates to an intensity display method.

[0002]

2. Description of the Related Art In the structural design of a building, it is necessary to carry out a structural plan in consideration of various forces acting on the building. For example,
Buildings have fixed or loaded loads, always or temporarily,
Loads such as snow load, wind pressure and seismic force are applied. Further, various stresses such as compressive stress, shear stress, bending stress, and tensile stress are generated in the building structure in relation to these loads. In the structural design of a building, the shape and skeleton type of the building are determined so as to satisfy safety standards with respect to various stresses generated by these various loads, and the arrangement and size of the building structural members are determined. That is, when arranging and arranging the building structural members in the middle of performing the structural design, it is necessary to calculate the stress with respect to the above load and to determine whether the predetermined strength is satisfied. For this reason, the applicant has proposed, for example, in Japanese Patent Application No. 10-250370 or the like, a display device for easily displaying what strength the building structural members will have in accordance with the stress value applied to the building structural members. ing. According to this apparatus, when designing the structure of a building, it is possible to visually understand easily how much each member has to what degree of external stress and how much the member has, and the designer can also request a design. It was also possible for the users to design while always grasping the strength of the building.

[0003]

The only external factor affecting the designed strength of a building is fire. If the building structural members are burned and become thin in a fire, the stress degree (stress value per unit cross-sectional area) becomes relatively large. Conventionally, no allowance has been made for calculating the strength in the event of such a fire. For example, the use of thicker materials often leaves unburned parts, so the only idea was to increase the thickness of building structural members based on a uniform idea that the strength could be maintained as soon as the fire was extinguished. However, some building structural members are hidden inside large walls, while others are exposed on a true wall structure. It is not easy. In other words, there has been no careful planning and design of how much strength can be maintained in the event of a fire.
Therefore, at the design stage, the designer could not sufficiently explain to the design client how much strength can be maintained in the event of a fire. The present invention has been made to solve the above problems. Its purpose is a building structure strength display device capable of easily expressing the change in strength when a building structural member is burned on the assumption that a fire has occurred in a real building structural member displayed on a display screen, and An object of the present invention is to provide an intensity display method.

[0004]

According to the first aspect of the present invention, there is provided a storage means for storing shape data and position data of a plurality of types of building structural members, and a storage means for reading data from the storage means. A two-dimensional diagram creating means for creating a two-dimensional diagram based on the building structural members selected from the building structural members whose three-dimensional arrangement positions are determined based on the obtained data; Display means for displaying a two-dimensional diagram obtained by the two-dimensional diagram creation means on a display screen, and strength for calculating the strength of each building structure member based on strength calculation data corresponding to the attribute of each building structure member Calculating means and preparing a plurality of strength display modes for each of the building structural members with respect to the two-dimensional diagram of the building structural members, and selecting a predetermined strength display mode based on the strength obtained by the strength calculating means. Selecting means; A strength display unit for displaying a predetermined strength display mode selected by the selection unit on a display screen as a strength display mode of the building structural member on the two-dimensional diagram; A residual area calculating means for calculating a residual area excluding a burn-in area with respect to a cross-sectional area of the building structural member calculated based on the residual area calculating means, based on the residual area calculated by the residual area calculating means. The gist is that the strength is calculated by means.

In such a configuration, a three-dimensional position is determined by combining each of the building structural members based on the shape data and the relative position data of the plurality of types of building structural members read from the storage means. Examples of storage means for storing shape data and relative position data include a storage element such as a semiconductor memory, a magnetic disk, a flexible disk, and a CD-RO.
External storage devices such as M and magneto-optical disks are conceivable.
The building structural members are displayed on the display screen based on the building members selected from the building structural members whose three-dimensional positions have been determined. On the other hand, the attributes of the building structural members are different from each other due to, for example, a difference in type such as a pillar or a beam, and a difference in shape, arrangement position, and the like. Therefore, the data for calculating the strength of the building structural member differs depending on each building structural member. As the intensity calculation data, a value previously stored in the storage device may be read and used, or a newly input value may be used. Examples of the strength calculation data include the above-described shape data, load data, and material data. The strength calculation means calculates the strength based on the strength calculation data. A predetermined strength display mode is selected by the strength display unit from a plurality of prepared intensity display modes for the two-dimensional diagram of the building structural member displayed on the display screen according to the strength. As the strength display mode, for example, if the strength is large, the building structural member itself is expressed using a cold color such as blue which images safety, and if the strength is low, a warm color such as red which images a danger is used. It is conceivable to express the building structural member itself. As the intensity display mode, various means other than the color, such as a difference in line type and a difference in brightness, can be taken.

In the present invention, it is possible to visually observe that the strength display mode of the building structural member on the two-dimensional diagram displayed on the display screen when the fire is burned changes as the strength changes. That is, the residual area is calculated by removing the burn-in area from the sectional area of the building structural member obtained based on the shape data by the residual area calculating means. Then, the strength is calculated by the strength calculation means based on the remaining area. In other words, the strength of the building structural member is displayed by calculating with the part excluding the part assumed to have burned. In the invention of the second aspect, in addition to the configuration of the first aspect of the invention, it is the gist that a plurality of types that can be selected according to the burning time are prepared as the combustion allowance area. In such a configuration, in addition to the operation of the invention of claim 1, it is possible to consider the strength of the building structural member that changes according to the assumed fire situation. According to the burning time, for example, several times set based on a fire test defined in the Building Standards Law, and the like are mentioned. Further, in the invention of claim 3, in addition to the configuration of the invention of claim 1 or 2, the burning allowance area can be selected from a plurality of burning allowance patterns prepared according to the state of exposure of the building structural member. Make a summary.

According to a fourth aspect of the present invention, the three-dimensional position of each of the building structural members is determined based on the shape data and the position data of the plurality of types of building structural members read from the storage means, and each of the building structures is determined. A two-dimensional diagram is created based on the members selected from the members, the strength is calculated according to the attribute of each building structural member, and a predetermined strength display mode is determined from a plurality of prepared strength display modes. In the strength display method for a building structure, which is displayed on a display screen as a strength display mode of the building structure member on the two-dimensional diagram according to the strength of the building structure member, the building calculated based on the shape data The gist is that the strength is calculated based on the remaining area of the sectional area of the structural member excluding the burn-in area. According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, the remaining area is determined based on the selected predetermined burning allowance pattern, and the building allowance is set based on the remaining burning area. The provisional strength is collectively calculated for the structural members, and then based on the strength display mode of the same building structural member displayed on the display screen based on the provisional strength, a desired strength display mode for each of the same building structural members and The gist is that the setting of at least one of the burn-in pattern and the cross-sectional area is changed so as to be as follows.

[0008]

According to the above configuration, the first aspect is provided.
In the invention of claim 4, since the building structural members on the two-dimensional diagram are represented in a strength display mode according to the stress value, the actual strength of the building structural members can be visually understood,
It is possible to examine the strength of the building structural member assuming a fire. According to the second aspect of the invention, in addition to the effect of the first aspect, it is possible to make a more detailed design of the degree of deterioration of the strength according to the elapsed time from the occurrence of the fire. Further, in the invention of claim 3, in addition to the effects of the invention of claim 1 or 2,
Assuming a fire, it is possible to compare how the degree of deterioration in strength differs depending on the degree of exposure of the building structural member, that is, the difference in the burning allowance pattern, and a finer design is possible. In addition, in the invention of claim 5, in addition to the effect of the invention of claim 4, provisional strength is first calculated assuming a fire under certain conditions, and individual building structural members can be examined based on the provisional strength. The strength calculation work can be performed efficiently.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a strength display device for a building structure according to the present invention (hereinafter referred to as a strength display device) will be described below with reference to FIGS. In the present embodiment, a description will be given of a strength display device limited to beams, columns, and bridges (hereinafter, referred to as beams, etc.) as building structural members. As shown in FIG. 1, the intensity display device is a CPU.
(Central processing unit) 11, and the CPU 11 has a ROM
(Read only memory) 12, RAM (random access memory) 13, magnetic disk device 14, input device 1
5, a mouse 16, a display device 17, and a printer 18 are connected. The ROM 12 has a program for controlling the operation of the entire strength display device, a calculation program for calculating the cross-sectional area and the burning allowance area of the beam or the like based on the shape data of the beam or the like, and a stress value based on the load data and the shape data. A calculation program to be calculated and various data required for the program operation are stored in advance. The RAM 13 has a CP
It is a writable and rewritable storage unit for temporarily storing various information required for the operation of U11. The magnetic disk device 14 stores shape data such as beams, relative position data, and load data, and the CPU 11 transfers these data to the RAM 13 according to the operation of the strength display device.

The input device 15 gives various commands to the CPU 11 and inputs data. Input device 15
Has a selection key 15a, a numeric keypad 15b, and an input key 15c. The selection key 15a is used to select a desired two-dimensional diagram or a desired process. The ten keys 15b are used to input new data. The input key 15c is used to execute a selected process or to determine data contents. The mouse 16 is an auxiliary device of the input device 15. The mouse 16 is moved over an instruction icon displayed on the display screen of the display device 17 and an input operation is performed.
And the same function as the input key 15c. Further, a beam or the like is designated by moving a mouse cursor on a beam or the like of the two-dimensional diagram displayed on the display screen of the display device 17 and performing an input operation. The display device 17 displays a two-dimensional diagram and a table displaying the attributes of the beams and the like on the display screen based on the shape data and the relative position data of the beams and the like read from the RAM 13. The printer 18 prints the two-dimensional diagram and various tables displayed on the display screen of the display device 17 on recording paper.

The CPU 11 calculates the cross-sectional area and burn-in area of each beam and column based on the beam and column shape data read from the RAM 13, and further calculates the remaining area based on these. As shown in FIG. 2, in the present embodiment, 15 types of burning allowance patterns are provided for the columns, and 6 types of burning allowance patterns are provided for the beams as shown in FIG. Further, in the present embodiment, two types of burn-in thickness are set according to the combustion time. C
The PU 11 calculates the burning allowance area based on the selected pattern and the selected burning thickness of the beam or column. Then, the remaining area is calculated by subtracting the burning allowance area obtained from the cross-sectional area. The CPU 11 calls the burning allowance calculation program in the ROM 12 and performs these calculations. In the present embodiment, the calculation is performed as follows. In the column shown in FIG. 2, 15 types of burn-in patterns are group A to group A based on the remaining area.
Assuming that one side of the column is a and the burn-up thickness is p as shown in FIG. 4, the remaining area of the group A: A = a * a The remaining area of the group B: B = a * a-ap * Remaining area of group C: C = a * a-2ap * Remaining area of group D: D = a * a + p * p-2ap * Remaining area of group E: E = a * a + 2p * p−3ap · Remaining area of F group: F = a * a + 4p * p−4ap As shown in FIG. 5, in the present embodiment, RO
The addresses nn to nn + 5 in the M12 are group A to
A table T1 indicating the relationship between the F group and the corresponding calculation formula is stored. Under the control of the burning allowance calculation program, the CPU 11 substitutes numerical data of the side length of the pillar and the thickness of the burning allowance obtained from the shape data based on the calculation formula of the address to which the selected burning allowance pattern belongs, and calculates the remaining area. I do. The obtained residual area data is temporarily stored in the RAM 13 as one of the shape data. In the beam shown in FIG. 3, as shown in FIG. 6, assuming that the back of the beam is a, the width is b, and the burning thickness is p, the remaining area of the G group: G = a * b Area: H = a * b-ap * Remaining area of group I: I = a * b-bp * Remaining area of group J: J = a * b + 2p * p-ap-bp * Remaining area of group K: K = a * b + 2p * p-2ap-b
It is represented by p. As shown in FIG.
At the addresses mn to mn + 4 inside 2, a table T2 indicating the relationship between the five types of patterns and the corresponding calculation formulas is stored, and the calculations are performed in the same manner as the columns.

Further, the CPU 11 calls a strength calculation program in the ROM 12 and calculates stress values of the beams and columns based on the shape data of the beams and the like, the relative position data and the load data read from the RAM 13. At this time, if the residual area data is set for the beam and the column, the stress value is calculated in consideration of the data. Further, the CPU 11
The color determination program in the OM 12 is called, and the color of the building structural member to be displayed on the display screen of the display device 17 is determined according to the stress value (that is, according to the strength). As shown in FIG. 8, in this embodiment, nm to nm +
The address T5 stores a table T3 indicating the relationship between the stress values divided into the bands and the colors representing the intensities of the six colors corresponding to the same band. Under the control of the color determination program, the CPU 11 extracts a color corresponding to the band to which the calculated stress value belongs from the table T1. For example, if the stress value of a building component under a certain condition is 0.11, the color representing the strength is determined to be blue.
The setting of this band can be changed.

The CPU 11 performs a processing operation according to a control program read from the ROM 12. The processing operation will be described with reference to FIGS. CPU11 is R
Based on the control program read from the OM 12, the shape data, relative position data, and load data of the building structural member are transferred from the magnetic disk drive 14 to the RAM 13.
The CPU 11 constructs a virtual three-dimensional model of the building structure based on the shape data and the relative position data. In the present embodiment, a plan sectional view obtained by cutting the virtual three-dimensional model obtained in this manner horizontally is displayed as a two-dimensional diagram on the display device 17.
Is displayed on the display screen.

First, as shown in FIG. 9A, the basic frame diagram 21 is displayed on the display screen of the display device 17 by operating the input device 15 or the mouse 16. Frames 22a to 22g indicated by bold lines are base positions where columns and beams involved in strength calculation are arranged, and isosceles triangles 23a to 23f are base positions where streaks are arranged. The small frame F indicated by a broken line is not involved in the strength calculation, but is set as a base position where small columns, small beams, etc. are arranged as building structural members. As shown in FIG. 9B, the attribute of each frame constituting the basic frame diagram 21 is displayed by operating the input device 15 or the mouse 16. In the present embodiment, as an example, the frame 22a (X5) is moved from the coordinates 1000 to 6 in the X direction.
It is shown that it is located at 500 positions and coordinates 7000 to 7000 in the Y direction. In the present embodiment, this coordinate data cannot be rewritten by the intensity display device as invariant data that has already been input.

Next, as shown in FIG. 10A, a first skeleton diagram 24 for checking columns, beams, and braces is displayed on the display screen of the display device 17 by operating the input device 15 or the mouse 16. . The first skeletal view 24 is arranged on the frame 23 with the columns 25a to 25m, beams 26a to 26m and ridges 27a to 27f involved in the strength calculation arranged on the frames 22a to 22g at the base position. The small beams 28 not involved in the calculated strength are displayed. FIG.
As shown in (b), the attributes of the building structural members constituting the first skeleton diagram 24 are displayed by operating the input device 15 or the mouse 16. In the present embodiment, as an example, the column 25a (C10) has a coordinate 100 in the X direction.
0 to 6500 positions, coordinates 7000 to 700 in Y direction
It is shown that it is arranged at the 0 position and the coordinates 610 to 3570 positions in the Z direction (the Z direction cannot be visually recognized in the two-dimensional diagram of the present embodiment). Furthermore, the first skeleton diagram 2
As attributes of 4, data such as timber size, tree species, and buckling length are also displayed. In the present embodiment, these data are invariable data already input and cannot be rewritten by the intensity display device.

As described above, the attributes of the building structural members essential for the building structure are confirmed, and desired values are input as load data for the floor and the wall. Of course, the load data need not be changed while keeping the initial set value. In the design, the structure of the roof or floor is also designed in the process, but in the present embodiment, the description other than the main steps is omitted. Next, intensity calculation is performed by operating the input device 15 or the mouse 16. That is, the stress value is calculated for each of the columns, beams, and braces involved in the strength calculation, and the strength distribution diagram 33 is displayed on the display screen of the display device 17 as shown in FIG. In the strength distribution chart 33, each column, beam, and ridge whose strength is calculated is represented by a color corresponding to the stress value. At this stage, a normal strength state without a fire is assumed.

As shown in FIGS. 13 and 14, different colors are displayed according to the stress values, and the intensity is expressed by the different colors. In the present embodiment, six colors are prepared according to the stress value, and blue has the highest intensity (small stress value).
Next, the intensity decreases in the order of light blue, yellow green, yellow, and pink, and red has the smallest intensity (stress value is large). The setting of the relationship between the color and the stress value can be changed. For example, it is possible to change the stress value from 0 to 0.24 as blue as the initial value to the stress value from 0 to 0.49. This change can be made on the table of FIG. 14 displayed as a dialog on the display screen of the display device 17 by operating the mouse 16. Here, the types of calculated stress values include bending stress (M), shear stress (Q), compressive stress (N), tensile stress (T), and bending stress of each building structural member itself.
Compressive stress (M + N), Deformation (δ), Bending stress (jM), Shear stress (j
Q), compressive stress (jN), tensile stress (jT), bending stress + compressive stress (jM + N). The load data for calculating the stress value is a fixed load (self weight + 180k for three people)
g: L), fixed load + snow load (L + S), fixed load +
X direction seismic force (L + ± EX), fixed load + Y direction seismic force (L + ± EY), fixed load + X direction wind pressure (L + ± W)
X), fixed load + wind pressure in the Y direction (L + ± WY), and fire load (fire). A stress value (a total of 121 types) obtained by combining all these types of stress and load is obtained for each building structural member to be subjected to strength calculation.

Next, by operating the input device 15 or the mouse 16, an intensity distribution diagram 35 in a state where a fire is assumed is displayed as shown in FIG. At this time, as initial values, all the pillars are again based on the fully exposed burn-in pattern, that is, based on the remaining area of the F group, and all the beams are also completely based on the remaining area of the K group, which is the fully exposed burning allowance pattern. A calculation is made. In other words, the above-described strength calculation is performed using the condition setting in the state where the strength is the lowest. In the present embodiment, the thickness of the burning allowance is 45
Two types of burn-in thickness of 3.5 cm were assumed assuming that the fuel continued to burn, and a burn-in thickness of 4.5 cm was assumed to continue burning for one hour. The calculation is carried out by adopting the reduced burning thickness of 4.5 cm. In the present embodiment, it is basically assumed that the stress value of the beam, the column, and the ridge should be 0.99 or less in this condition setting. Therefore, it is necessary to change the setting individually for members that do not clear this condition setting. For example, in FIG. 15, the beams 26f, 26k, and 26j (hereinafter referred to as beams 26f and the like) show red (danger) when the burning allowance pattern is fully represented and the burning allowance thickness is 4.5 cm. As described above, in the design assuming a fire as in the present embodiment, first, all the beams and columns are designed based on the worst conditions, and then the conditions are changed so that each member is in a safe area. For example, measures such as changing the burning allowance pattern and enclosing the wall with a large wall structure instead of a complete representation or increasing the cross-sectional area are taken.

More specifically, the change of the burning allowance pattern is performed using the icon 38 of the burning allowance pattern displayed on the display screen of the display device 17 as a separate dialog 37 (FIGS. 11A and 11B). . A plurality of icons 38 indicating pattern marks of different types of burning allowance patterns are displayed on the dialog 37, and any one of the icons 38 can be selected by operating the input device 15 or the mouse 16. A burnup pattern of the K group in which any icon 38 is initially set as a burnup pattern for a beam or a column such as the beam 26f or the like that requires a design change by operating the input device 15 or the mouse 16 And replace it. Then, the strength is calculated again and the beam 26
Whether or not f has reached the desired strength is examined by checking the color change of the beams 26f and the like. The intensity distribution diagrams 33 and 35 obtained in this way can be printed by the printer 18.

As described above, the configuration as in the present embodiment has the following effects. -Pillars, beams, and braces as building structural members are colored with a color indicating the strength according to the calculated stress value, and are represented in the strength distribution diagrams 33, 35 of the two-dimensional diagram. Compared to the case where only the stress value is displayed as a numerical value, the strength is directly recognized visually as the color applied to the building structural member itself, so that the strength is easy to understand. In addition, since the magnitude of the strength can be understood at a glance as a difference in color, the difference in strength in the building structural member becomes easier to understand than before.・ Because the strength can be calculated by assuming the burning allowance that will be burned by a fire, instead of simply selecting a thicker member as in the past, it is not a design that simply selects a thicker member. It is possible to specifically examine whether the condition should be satisfied, and a more precise design becomes possible. A dialog 37 is displayed on the display screen of the display device 17, and the burn-in pattern can be selected by selecting the burn-in pattern icon 38 shown therein. Can be easily compared, and a more detailed design can be made.・ A plurality of types (two types in the above embodiment) of the thickness of the burning allowance are prepared depending on how much burning, so it is possible to visually understand how much the strength decreases depending on the burning time. We can understand fear.・ The burn-in pattern and burn-in thickness with the lowest strength are initially set, and the strength under these conditions can be initially obtained as the provisional strength. Since it is not necessary to change the condition setting only for members that do not have the desired strength, work can be rationalized.

The burn-in pattern in the above embodiment is an example, and other patterns can be freely set. In the above embodiment, the calculation of the burning allowance was performed only for the beams and columns, but the calculation for the other building structural members may be freely performed. In the above embodiment, beams, columns, and braces are used as building structural members. However, if there are other members, such as a purlin, a bundle, a load-bearing wall, and a fire, they may be included in the strength calculation. -In the said embodiment, two types were set as the burning allowance thickness. However, more types of thickness (that is, finer combustion time) may be set. For example, a very short time interval, for example, a burn-in thickness every 5 minutes may be set, and the result of the strength calculation may be continuously displayed on the strength distribution diagram 35. In this way, it is possible to simulate with time by visually observing the intensity changed by the fire every moment. As the initial value for displaying the intensity distribution diagram 35, the condition setting in the state where the intensity is the lowest is adopted, but the initial value may be set under other conditions.

Further, the above embodiment can be modified and implemented as follows. In the above embodiment, various data are stored in the magnetic disk drive 1
4 to the RAM 13. But,
The data may be transferred from another external storage device such as a flexible disk, a CD-ROM, or a magneto-optical disk. In addition, LAN (Local
Area Network), WAN (Wide Ar)
ea Network) or data communication such as the Internet. In the above embodiment, the various data transferred to the RAM 13 have a large effect on the skeleton of the building, such as pillars, beams, and streaks. The data cannot be rewritten, and the load data on the floors and walls does not affect the skeleton of the building. It was rewritable as no.
That is, only a part of the data could be updated by the intensity display device. However, all of the various data may be made rewritable, or all the data may not be rewritable. In the above-described embodiment, various data in the magnetic disk device 14 created in advance are used. However, the data may be input on the strength display device side and stored in the RAM 13. Alternatively, only the load data may be input on the strength display device side. Although the two-dimensional diagram is a flat cross section, it is not limited to this. For example, various expressions are conceivable, such as a vertical sectional view or a perspective perspective view. It is also possible to prepare a plurality of two-dimensional diagrams, for example, two-dimensional diagrams of the first floor, the second floor, and the third floor in a three-story building. The intensity display mode for displaying the intensity may be a pattern other than the above colors, and the number of colors to be used can be freely set. In addition, the mark may be displayed based on a difference in line type or a difference in brightness from white to black, and a mark corresponding to the strength may be arranged so as to overlap with a member on display. -The kind of load and the kind of stress in the said embodiment are only examples. In the present embodiment, the above is merely obtained as the most universal strength determination condition, and the type may be added or reduced.・ It is free to not print. Therefore, a printer is not required. When storing data, any storage means can be used. For example, a magnetic disk device, a RAM, a flexible disk, a CD-ROM, a magneto-optical disk, and the like can be given as examples. In addition, the present invention can be freely modified and implemented without departing from the spirit thereof.

Other technical ideas of the present invention that can be understood from the above embodiment will be described below. (1) The strength display device for a building structure according to claim 3, wherein a list of the plurality of burning allowance patterns is displayed on the display screen and can be selected from the list. here,
The plurality of burning allowance patterns take into account that the burning allowance differs depending on the positional relationship between the building structural members and other building members. For example, in the case of a large wall structure, the pillar is hidden on the back side of the wall, so that it is located at a position where it is more difficult to burn as compared with the pillar shown in the true wall structure. In this way, if there is a portion surrounded by surrounding building members, the burning cost is reduced in that portion. In other words, the amount of burning depends on the amount of the exposed part. . This makes it easy to select a desired pattern from a plurality of burn-in patterns, so that it is easy to compare the degree of strength deterioration due to fire due to differences in burn-in patterns. (2) The strength display method for a building structure according to claim 5, wherein the selected predetermined burning allowance pattern has the smallest remaining area. (3) The strength display device for a building structure according to claim 1 or 2, wherein the strength display mode is expressed on a building structure member itself and displayed on a display screen. (4) The strength display method for a building structure according to claim 4 or 5, wherein the strength display mode is expressed on a building structural member itself and displayed on a display screen.

[0024]

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an electrical configuration according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a burn-in pattern of a pillar according to the same embodiment, which is separated for each type.

FIG. 3 is an explanatory diagram for explaining a burn-in allowance pattern of a beam in the same embodiment for each type.

FIG. 4 is an explanatory diagram for explaining a method of calculating the burning allowance of a pillar in the same embodiment.

FIG. 5 is a table showing a relationship between a residual area and a stress value in the same embodiment.

FIG. 6 is an explanatory diagram illustrating a calculation method of a burning allowance of a beam in the same embodiment.

FIG. 7 is a table showing a relationship between a residual area and a stress value in the same embodiment.

FIG. 8 is a table showing a relationship between a stress value and a color to be displayed in the same embodiment.

9A is an explanatory diagram illustrating a basic frame diagram displayed on a display screen, and FIG. 9B is a table illustrating attributes of members of the basic frame diagram.

FIG. 10A is an explanatory diagram illustrating a first skeleton diagram displayed on a display screen, and FIG. 10B is a table illustrating attributes of members of the first skeleton diagram. b) is a table for explaining the attributes of the members in the third skeleton diagram.

11A and 11B are explanatory diagrams of a dialog displaying icons for selecting a burning allowance pattern, wherein FIG. 11A is a diagram of a pillar, and FIG.
Is a beam diagram.

FIG. 12 is an explanatory diagram illustrating an intensity distribution diagram displayed on a display screen.

FIG. 13 is a table showing a relationship between intensity and an actual color.

FIG. 14 is a table illustrating attributes of members of an intensity distribution diagram displayed on a display screen.

FIG. 15 is an explanatory diagram illustrating an intensity distribution diagram that takes into account the burning allowance displayed on the display screen.

[Explanation of symbols]

11: CPU as a part of two-dimensional diagram creation means, intensity calculation means, remaining area calculation means and selection means, and display means strength and degree display means, 13 ... RAM as storage means, 17 ... Display means and intensity display means Display device.

Claims (5)

[Claims] 1. A storage means for storing shape data and position data of a plurality of types of building structural members, and each of the buildings in which a three-dimensional arrangement position is determined based on the data read from the storage means. A two-dimensional diagram creating means for creating a two-dimensional diagram based on the building structural members selected from the structural members, and a display for displaying the two-dimensional diagram obtained by the two-dimensional diagram creating means on a display screen Means, strength calculation means for calculating the strength of each building structure member based on strength calculation data corresponding to the attribute of each building structure member, and for each building structure member with respect to the two-dimensional diagram of the building structure member A plurality of intensity display modes, and a selection means for selecting a predetermined intensity display mode based on the intensity obtained by the intensity calculation means; and a predetermined intensity display mode selected by the selection means.
And a strength display means for displaying the strength of the building structural member on the display screen as the strength display mode of the building structural member on the three-dimensional diagram, wherein the strength of the building structural member is calculated based on the shape data. The remaining area calculating means for calculating the remaining area excluding the burning allowance area is provided, and the strength is calculated by the strength calculating means based on the remaining area calculated by the remaining area calculating means. Strength display of building construction. 2. The strength display device for a building structure according to claim 1, wherein a plurality of types of the burn-in allowance area are selectable according to a burning time. 3. The strength of a building structure according to claim 1, wherein the burn-in area can be selected from a plurality of burn-in patterns prepared according to an exposed state of the building structural member. Display device. 4. A three-dimensional position of each of the building structural members is determined based on shape data and position data of a plurality of types of building structural members read from a storage means, and selected from the building structural members. A two-dimensional diagram is created based on the members, the strength is calculated for each building structure member according to the attribute thereof, and a predetermined strength display mode is changed from a plurality of prepared strength display modes to the strength of each building structure member. In a strength display method of a building structure, which is displayed on a display screen as a strength display mode of the building structure member on the two-dimensional diagram, a sectional area of the building structure member calculated based on the shape data A strength calculation method for calculating a strength based on a remaining area excluding a burn-in area. 5. A residual area is determined based on the selected predetermined burning allowance pattern, and provisional strength is collectively calculated for the building structural members to be set for a burning allowance based on the remaining burning area. Based on the strength display mode of the same building structure member displayed on the display screen based on the provisional strength, at least the burn-in pattern or the cross-sectional area so as to have a desired strength display mode for each of the same building structure members. The strength display method for a building structure according to claim 4, wherein one of the settings is changed.