JP2008217631A - Structural design support system for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structural design support system for a building by which an optimal structure can rapidly be extracted. <P>SOLUTION: The system is provided with: a design policy setting means 41 for setting structural design policy data, such as a building construction method of the building or a reference module, input by an input device 2; a plan setting means 42 for fetching shape data and opening position data of each room; a wall position setting means for setting wall position data from data fetched by the plan setting means and a reference module; a load calculation means for calculating input loads; an arrangement pattern generating means for generating an arrangement pattern of all the bearing walls including the structural design policy data; and an allowable arrangement pattern extraction means for extracting the arrangement pattern of a wall amount that satisfies a condition of the structural setting policy from the patterns. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a building structural design support system for quickly performing structural design of a building by automatically generating an arrangement pattern of bearing walls.

  Conventionally, there has been known a design support system that generates data for performing detailed structural calculation and picking up members for what has been roughly designed by a designer such as a floor plan and a position of a bearing wall (patent) References 1, 2 etc.).

  For example, the housing performance display wall quantity calculation system disclosed in Patent Literature 1 clearly and easily displays the building performance by selecting the wall that contributes to the strength among the walls of the building and integrating the wall quantity. It is what you do.

In other words, in this residential performance display wall quantity calculation system, members such as columns, beams and braces are detected from the drawing of the building, and those that can be determined as bearing walls are automatically determined, and walls that are determined as bearing walls Based on the above, the wall quantity is calculated and the position of the bearing wall is output to the drawing to create a wall quantity calculation document with clear grounds.
Japanese Patent No. 3478801 JP 2005-165918 A

  However, in the above-mentioned housing performance display wall quantity calculation system, a designer extracts what can be regarded as a bearing wall from a design drawing (CAD data) created by deciding the positions of columns, beams, braces and walls, It does not indicate where to place the bearing walls.

  In addition, there are many patterns for the combination of the position of the wall and whether or not the wall is to be a load bearing wall. In order to determine which of these patterns is optimal in terms of structure, a rough design is required. Must be repeated, which takes time and effort.

  Accordingly, an object of the present invention is to provide a building structural design support system capable of quickly extracting an optimal structure.

  In order to achieve the above object, a building structural design support system according to the present invention includes a design policy setting means for setting structural design policy data such as a building construction method and a reference module of a building by an input from the input means, a storage means or Plan setting means for capturing shape data of each floor of the building, shape data of each room or space, and opening position data by input from the input means, the data captured by the plan setting means, and the standard design dimensions Wall position setting means for setting wall position data from a reference module; load calculation means for calculating an input load based on data set by the design policy setting means, plan setting means and wall position setting means; and the wall position A plurality of bearing wall arrangement patterns that satisfy all or predetermined conditions including the structural design policy data for the data And arrangement pattern generating means for forming, characterized in that from among the arrangement pattern and a permissible arrangement pattern extracting means for extracting the arrangement pattern of satisfying the walls of said structural design strategy.

  Here, an optimum pattern determining means for extracting an optimum pattern from the allowable arrangement pattern according to a predetermined condition, a detail design means for calculating detailed design data from the extracted optimum pattern, and a calculation result by the detail design means Can be provided.

  Further, the optimum pattern determination means can be configured to calculate the eccentricity of the building for all of the allowable arrangement patterns and extract the one having the smallest eccentricity as the optimum pattern.

  In the detailed design means, at least one of creation of structural calculation data and creation of earthquake response analysis data for verification of seismic performance is performed.

  The building structural design support system of the present invention configured as described above sets the building structural design policy, the shape data such as each floor and each room, the opening position, and when the wall position data is set, the input The load is calculated, and as many load bearing wall arrangement patterns as possible that meet predetermined conditions are extracted, and the optimum pattern is extracted from the extracted pattern, and detailed design data is generated based on the extracted pattern.

  For this reason, the optimal structure of a building can be extracted rapidly, and the effort which determines the arrangement pattern of a bearing wall by trial and error can be saved.

  Further, by determining the optimum pattern based on the value of the eccentricity value, it is possible to accurately extract a structure that is unlikely to cause excessive stress due to an earthquake or the like based on an objective criterion.

  Furthermore, the structural calculation and seismic analysis of the extracted structure can be easily performed by generating the structural calculation data and the seismic response analysis data for verifying the seismic performance by the detailed design means.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 2 is a diagram showing a schematic configuration of the building structural design support system 1 according to the present embodiment.

  This structural design support system 1 includes an input device 2 used as input means, a storage device 3 used as storage means or output means, and an arithmetic device that takes in data from the input device 2 or storage device 3 and performs an operation. 4 and an output device 5 as output means.

  The input device 2 includes a scanner 21 used when reading a plan view printed on paper, a pointing device such as a mouse 22 used when inputting by moving a pointer on the screen, and a numerical value. And a keyboard 23 used for inputting names and the like.

  The storage device 3 may be configured by selecting necessary storage media such as the hard disk 31, CD-ROM 32, and flash memory 33.

  The storage device 3 stores programs, numerical values defined by laws and regulations relating to the structural design policy of buildings, reference modules that are generally selected as design modules, standard dimensional data of various plans, and the like. ing.

  Further, the output device 5 includes a printer 51, a monitor 52, and the like.

  Further, as shown in the schematic configuration of FIG. 2, the arithmetic device 4 has a design policy setting means 41, a plan setting means 42, a calculation means 43, a structure calculation data creation means 44, and a seismic performance verification. And the earthquake response analysis data creation means 45 of FIG.

  The design policy setting means 41 is a means for setting a policy for performing the structural calculation. In other words, whether to design with the limit strength design method, to design with the allowable stress design method, or to design with specifications that determine the length of the load bearing wall for the floor area with a somewhat simplified formula Since the calculation method, the set values such as the strength of the material, etc. vary depending on whether or not to perform, it is necessary to set a design policy.

  In addition to designing at the standard Building Standards Act level, it is necessary to multiply the magnification as required to design the building so that it can withstand earthquakes, while comparing safety and economic efficiency. Since it is determined, it can be set arbitrarily.

  Further, the design policy setting means 41 can set the eccentricity, rigidity, interlayer deformation amount, etc., which are the design targets.

  As a design policy setting method, structural design policy data used for each structural design policy such as a building construction method and a reference module of a building is stored in the storage device 3 in advance, and a plurality of structural design policies are displayed on the monitor 52. The structural design policy can be selected by input from the input device 2.

  In addition, on the program input screen displayed on the monitor 52, data used in the structural design policy can be directly input from the input device 2 or a part thereof can be corrected.

  Further, the design policy setting means 41 sets a standard design dimension used for the design. For example, in a conventional wooden building or the like, generally 910 mm is designed as a reference module.

  This reference module can be set by selecting from a plurality stored in the storage device 3 or by inputting a numerical value that the designer wants to use from the input device 2.

  Further, the plan setting means 42 mainly sets items related to the shape of the building, such as shape data of each floor of the building, shape data of each room or space, and opening position data. In other words, the position of the outer wall is determined by the floor plan data for arranging each room of the building or the data of the shape of each space such as a building unit, and the zoning that divides the building space into several small parts using functions and applications as indices is made. If it is, the approximate position of the inner wall is determined, and it is possible to determine where the load bearing wall can be arranged. Further, when there is an opening on the outer wall, the strength as the load-bearing wall is lowered, so an approximate opening position is set.

  For example, as the simplest method, the shape data can be created by designating the desired shape or opening position of each room along the grid with the mouse 22 or the like on the input screen provided with the grid. .

  In addition, by arranging a unit space such as a building unit in which the purpose of each room or facility is designated with the mouse 22, data can be easily created.

  In addition to this, it is also possible to input a corner coordinate input from the keyboard 23 or a plan view read by the scanner 21. It is also possible to select from plans stored in the storage device 3 in advance.

  The opening position can be set by selecting the position and size from the plans stored in the storage device 3.

  Furthermore, the floor plan data can also be set by selecting the position and size from the plans stored in the storage device 3. It is also possible to input the coordinates of the room boundary from the keyboard 23 or read the plan view read by the scanner 21.

  Since the floor plan data and the shape data of each room have many common parts, part or all of the floor plan data can be omitted.

  In addition, the plan setting means 42 can additionally set the reference dimensions of the members, and the structural member can be set by reading the weight of the selected material from the storage device 3 or the like. .

  Further, the calculation means 43 is provided with a wall position setting means, a load calculation means, an arrangement pattern generation means, an allowable arrangement pattern extraction means, an optimum pattern determination means, etc. (see FIG. 1).

  Then, the wall position setting means determines basic column and beam intervals and wall installation positions using the reference module set by the design policy setting means 41.

  That is, since the opening position set by the plan setting means 42 is only an approximate position, the position of the column is determined according to the set reference module such as 910 mm, and then the wall is set in units of the reference module. Determine the position and opening position.

  In addition, the load calculation means uses a fixed load that is the weight of the building itself, such as a wall, floor, or ceiling, generated by the wall position setting means, and a load that acts by a person or installed furniture when living in the building. Calculate the load.

  The fixed load and the loaded load are calculated by taking in numerical values such as laws and regulations applied by the structural design policy set by the design policy setting means from the storage device 3 or the input device 2. Further, the numerical value to be captured is converted according to the reference module and used for calculation.

  Further, in the arrangement pattern generation means, it is possible to determine which of the walls set by the wall position setting means is a load bearing wall with braces and what kind of load bearing wall is possible. Generate all patterns of.

  Here, the load-bearing wall refers to a wall that has a greater load-bearing capacity than ordinary walls by using bracing or ladder-like reinforcing materials, or by using highly rigid wall materials such as structural plywood. . The load-bearing wall can be estimated more than the normal wall by multiplying by the wall magnification set by laws and regulations.

  For example, in the case of a plan having a large number of wall setting points (that is, having a small number of openings), it can be designed so that many bearing walls with a small wall magnification are taken. In the case of a plan having a large number of openings, a design can be made in which a small amount of bearing walls having a large wall magnification are arranged.

  In this way, it is possible to arbitrarily specify the policy in which the bearing wall is arranged by the design policy setting unit 41. When the policy (condition) is set, the design is performed by the arrangement pattern generation unit. As for the arrangement pattern of the bearing walls, only those satisfying the condition are extracted as much as possible.

  In the arrangement pattern generation means of this embodiment, for example, all combinations that can be assumed from the set wall position data are extracted from the arrangement pattern in which all the walls are bearing walls to the arrangement pattern in which only one wall is the bearing wall. .

  In addition, the permissible layout pattern extraction means calculates the wall amount (multiplied by the wall magnification) of the load bearing wall of each layout pattern extracted by the layout pattern generation means, and satisfies the required wall quantity of the set structural design policy. Existing arrangement patterns are extracted as allowable arrangement patterns.

  When calculating the amount of walls, it is possible to target only walls that are bearing walls. However, if the walls are lower in strength than bearing walls but have strengths that are recognized as semi-bearing walls, Even if it is a wall, it can also be added to the total as a wall amount.

  The optimum pattern determining means extracts an optimum arrangement pattern from the allowable arrangement patterns extracted by the allowable arrangement pattern extracting means.

  Here, the determination method based on the eccentricity rate will be described, but priority may be given to economical efficiency, and the pattern having the smallest wall amount may be extracted from the allowable arrangement patterns as the optimum pattern.

  The eccentricity of a building is a value calculated from the eccentric distance, which is the distance between the center of gravity and the center of the building. If the eccentricity is large, partial deformation will occur when a horizontal load such as an earthquake is applied. The building is easily damaged locally. The center of gravity of the building refers to the centroid of the planar shape of the building, and the rigid center refers to the center of the force that opposes the horizontal force.

  Therefore, the eccentricity is calculated for all of the extracted allowable arrangement patterns, and the allowable arrangement pattern having the smallest eccentricity is determined as the optimum pattern and extracted.

  Also, a plurality of criteria such as wall amount and eccentricity may be provided, and an allowable arrangement pattern that satisfies both criteria values may be extracted as the optimum pattern.

  Then, as described above, the optimum pattern of the bearing wall is determined by the calculation means 43, and the data for the optimum pattern is obtained by the structure calculation data creation means 44 and the earthquake response analysis data creation means 45 as shown in FIG. Generate.

  In this structural calculation data creation means 44, the coordinates of the extracted optimum pattern such as columns, beams, walls, etc., and the load data calculated by the load calculation means are taken in as structural calculation data, and the output device 5 and the storage device 3 To output.

  The data generated by the structural calculation data creation means 44 can be used for detailed design of each member such as a board.

  On the other hand, when performing response analysis as a detailed design in order to verify seismic safety, the position and rigidity of the columns and beam joints necessary for response analysis in the earthquake response analysis data creation means 45, and members connecting them Create data such as the type of cross section and the stiffness and restoring force characteristics of the bearing wall set between them.

  The rigidity and restoring force characteristics of the joint portion of the wood may be obtained by taking in numerical values stored in the database of the storage device 3 and associating them with each portion.

  Next, a processing flow of the building structural design support system 1 according to the present embodiment will be described.

  FIG. 1 is a flowchart showing a processing flow of the structural design support system 1.

  First, the structural design support system 1 is activated, the names of a plurality of structural design policies are displayed on the monitor 52, and the keyboard 23 or the mouse 22 is operated by the designer to select the structural design policy that the designer wants to implement. (Step S11).

  Then, the design policy setting means 41 of the arithmetic unit 4 that has received an instruction from the input device 2 takes in various data of the selected structural design policy stored in the hard disk 31 and sets the design policy (step S1). ).

  At this time, the numerical value of the structural design policy stored in advance can be corrected or added by inputting from the keyboard 23.

  Similarly, in order to select a reference module to be used for design, the keyboard 23 or mouse 22 is operated (step S11) and set as a reference module (step S1).

  Subsequently, in step S21, the position of the outer wall 71 of the first floor 61 of the building 6 as shown in FIG. 3A is input as shape data, or the second floor 62 of the building 6 as shown in FIG. 3B. The position of the outer wall 71 is input as shape data. This input can be performed by inputting a corner coordinate value with the keyboard 23, or reading a plan view with the scanner 21 and instructing a point to take in the coordinates with the mouse 22.

  Further, the positions of openings 72 such as windows and doorways can also be taken from the plan view shown in FIGS. 3 (a) and 3 (b).

  Furthermore, the shape data of each room can be created by designating the shape and opening position of each room along the grid with the mouse 22 or the like on the input screen provided with the grid.

  Then, a plan for designing based on such input is set (step S2). In the case of a unit building where the size of the building unit is specified, shape data, etc., can be determined and presented in several plans, so the plan data stored in the storage device 3 can be taken in It can also be set.

  In step S3, the installation position of the wall is determined using the reference module set in step S1.

  The installation position of the wall is selected from the wall position 8 shown in FIGS. 3A and 3B so as to match the shape data of each room.

  Then, in step S4, the fixed load and the loaded load in the wall position data set in step S3 are calculated.

  Subsequently, in step S5, all the possible placement patterns of the bearing walls are extracted from the wall position data set in step S3 by combinations of which walls are used as the bearing walls. FIG. 4 is an example of the arrangement pattern, and the wall displaying the X-shaped bracing is the bearing wall 91.

  On the other hand, even if it is established as a combination, an arrangement pattern that does not satisfy the wall amount determined by the structural design policy cannot be adopted. For example, in the Building Standard Law, the required wall length per unit area is determined by the weight of the building or roof, the number of floors such as the first or second floor, and the layout pattern that does not satisfy the required wall quantity is Since it is not selected as an optimal pattern, it eliminates.

  That is, in step S6, the wall amount of the bearing wall is calculated for all of the extracted arrangement patterns, and those satisfying the necessary wall quantity are extracted as the allowable arrangement patterns.

  In step S7, the eccentricity of each allowable arrangement pattern is calculated, and the allowable arrangement pattern having the smallest eccentricity is extracted as the optimum pattern.

  In step S81, data for structure calculation is created from the position of the load bearing wall of the optimum pattern selected in this way. For example, FIG. 4 is a structural model diagram of the building 6 illustrated by the data for calculating the structure of the optimum pattern, and the positions of the bearing wall 91, the beam 92, and the pillar 93 can be confirmed.

  The structural calculation data generated in step S81 is output to the output device 5 and the storage device 3 in step S9 and used for structural calculation and detailed design of members.

  Also, when response analysis is performed, earthquake response analysis data including the position data of the bearing wall 91, the beam 92, and the column 93 similar to those in FIG. 4 is generated.

  The building structural design support system 1 of the present invention configured as described above sets the building structural design policy, the shape of each floor and each room, and the opening position. When the wall position data is set, the input The load is calculated, the arrangement pattern of the bearing walls as much as possible is extracted, the optimum pattern is extracted therefrom, and the detailed design data is generated based on the extracted optimum pattern.

  For this reason, the optimal structure of a building can be extracted rapidly, and the effort which determines the arrangement pattern of a bearing wall by trial and error can be saved.

  In addition, by determining the optimum pattern based on the value of the eccentricity value, a structure that is unlikely to cause excessive stress due to an earthquake or the like can be accurately extracted by a computer.

  In addition, structural calculation data and seismic analysis for building 6 can be easily performed by generating the structure calculation data and seismic response analysis data for verification of seismic performance by using detailed design means. Can do.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are possible. Are included in the present invention.

  For example, in the above embodiment, the plan setting means captures the shape data of each room, but the present invention is not limited to this, and the shape data of a space such as a building unit can also be captured.

  Further, in the above-described embodiment, all the arrangement patterns of the bearing walls are extracted from the wall position data, but the present invention is not limited to this, and “the arrangement of the bearing walls prioritizes the corners”, etc. In accordance with the design policy, it is possible not to extract an arrangement pattern that does not satisfy the condition.

  Furthermore, the present invention can be applied not only to unit buildings but also to conventional wooden buildings. Moreover, not only an outer wall and an inner wall but a partition wall etc. can also be made into a load-bearing wall.

It is the flowchart which showed the flow of the process of the structural design support system of the best embodiment of this invention. It is the figure which showed schematic structure of the structural design support system of the best embodiment of this invention. (A) is the top view which showed the external shape of the 1st floor which performs a design, and the installation possible position of a wall, (b) is the top view which showed the external shape of the 2nd floor which performs a design, and the installation possible position of a wall. It is a structural model figure of a building created based on data outputted as data for structure calculation.

Explanation of symbols

1 Structural design support system 2 Input device (input means)
3. Storage device (storage means, output means)
4 computing device 41 design policy setting means 42 plan setting means 43 computing means 44 structure calculation data creation means 45 earthquake response analysis data creation means 5 output device (output means)
6 Building 61 First floor 62 Second floor 71 Outer wall (shape of each floor)
72 Opening 8 Wall position 91 Bearing wall

Claims (4)

Design policy setting means for setting the structural design policy data of the building by input from the input means;
Plan setting means for capturing shape data of each floor of the building, shape data of each room or space, and opening position data by input from the storage means or input means;
Wall position setting means for setting the wall position data from the data captured by the plan setting means and the reference module serving as a reference design dimension;
A load calculating means for calculating an input load based on the data set by the design policy setting means, the plan setting means and the wall position setting means;
An arrangement pattern generating means for generating a plurality of arrangement patterns of bearing walls satisfying all or predetermined conditions including the structural design policy data with respect to the wall position data;
A building structural design support system, comprising: an allowable arrangement pattern extracting means for extracting an arrangement pattern of a wall amount satisfying the structural design policy from the arrangement pattern. An optimum pattern determining means for extracting an optimum pattern from the allowable arrangement pattern according to a predetermined condition;
Detailed design means for calculating detailed design data from the extracted optimum pattern;
The building structural design support system according to claim 1, further comprising an output unit that outputs a calculation result obtained by the detailed design unit.   The said optimal pattern determination means calculates the eccentricity of a building with respect to all the said allowable arrangement | positioning patterns, The thing with the smallest eccentricity is extracted as an optimal pattern, The building of Claim 2 characterized by the above-mentioned. Structural design support system.   4. The structural design support for a building according to claim 2, wherein the detailed design means performs at least one of creation of structural calculation data and creation of earthquake response analysis data for verification of seismic performance. system.

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