JP2023079753A - Design support device - Google Patents

Abstract

To support structural design of a building using appropriate structural members only by input of a design condition.SOLUTION: A design support device allocates, by a first allocation unit, predetermined members to a plurality of structural members based on a result of stress analysis of a building model so that a condition related to long-term stress is satisfied and the cross section of the predetermined members becomes smallest. The design support device changes, by a second allocation unit, the predetermined members allocated to the plurality of structural members based on the result of stress analysis of the building model so that a condition related to short-term stress is satisfied. The design support device changes, by a third allocation unit, the predetermined members allocated to the plurality of structural members based on the result of stress analysis of the building model so that a target value of the interlayer deformation angle of every floor is satisfied. The design support device calculates, by a fourth allocation unit, necessary horizontal load-carrying capacity from the predetermined members allocated to the plurality of structural members, and changes the predetermined members allocated to the plurality of structural members so that the result of stress analysis of the building model satisfies the calculated necessary horizontal load-carrying capacity.SELECTED DRAWING: Figure 7

Description

The present invention relates to a design support device.

2. Description of the Related Art Conventionally, there is known a design support device that supports structural design that satisfies a predetermined standard for cross sections of building members (for example, Patent Literature 1). This design support device reads from a storage device a three-dimensional model of a building showing the arrangement of building members including structural members, and sets the cross-sections of the building members included in the three-dimensional model to temporary sizes for structural calculation. Structural calculation is performed using the model generation unit that converts to a structural analysis model and the structural analysis model, and the cross section is calculated by repeatedly enlarging the cross section of the structural member included in the structural analysis model until a predetermined standard is met. and a cross section calculator.

JP 2019-168838 A

In the technique described in Patent Document 1, structural calculation is performed using a structural analysis model, and cross section calculation is performed by repeating enlargement of the cross section of a structural member included in the structural analysis model until a predetermined standard is satisfied. However, in the above Patent Document 1, each of the plurality of structural members of the building model is configured so as to satisfy the conditions regarding long-term stress, the condition regarding short-term stress, the target value of the story drift angle of each floor, and the required horizontal strength in that order. Assigning a default member to is not described.

SUMMARY OF THE INVENTION In consideration of the above facts, it is an object of the present invention to support the structural design of a building using appropriate structural members only by inputting design conditions.

A design support device according to the present invention includes a building model that is a building to be designed and includes a plurality of structural members, a long-term stress condition, a short-term stress condition, and each floor an input unit for receiving design conditions including a target value of inter-story drift angle; Based on the result of stress analysis for the building model, each of the plurality of structural members satisfies the conditions related to long-term stress and the predetermined member assigned to each of the plurality of structural members has a minimum cross section. a first assigning unit that assigns a predetermined member; and based on the result of stress analysis for the building model that assigns the predetermined member to each of the plurality of structural members, the plurality of structural members so as to satisfy a condition related to short-term stress. and a second assigning unit that changes the default member assigned to each of the plurality of structural members, based on the result of stress analysis for the building model in which the default member is assigned to each of the plurality of structural members, the target value of the inter-story drift angle of each floor Calculate the required horizontal strength from the third assigning unit that changes the default member assigned to each of the plurality of structural members and the default member assigned to each of the plurality of structural members so as to satisfy the a fourth assigning unit that changes the default member assigned to each of the plurality of structural members so that the result of the stress analysis on the building model satisfies the calculated required horizontal strength.

According to the design support device according to the present invention, the input unit inputs a building model, which is a building to be designed and includes a plurality of structural members, a long-term stress condition related to the building to be designed, a short-term Design conditions are accepted, including stress conditions and target story drift angles for each floor.

Then, the first assigning unit assigns each of the plurality of structural members a predetermined member selected from a member list storing predetermined members whose member information is predetermined, based on the result of the stress analysis for the building model. Then, the predetermined member is assigned to each of the plurality of structural members such that a condition regarding long-term stress is satisfied and the cross section of the predetermined member assigned to each of the plurality of structural members is minimized. Based on the result of the stress analysis for the building model in which the predetermined member is assigned to each of the plurality of structural members, the second assigning unit assigns the predetermined member to each of the plurality of structural members so as to satisfy a condition regarding short-term stress. Change the default member.

Then, based on the result of stress analysis for the building model in which the predetermined member is assigned to each of the plurality of structural members, the third assigning unit assigns the plurality of structural members so as to satisfy the target value of the inter-story drift angle of each floor. Modifying the default member assigned to each of the structural members. A fourth assigning unit calculates the required horizontal bearing capacity from the predetermined members assigned to each of the plurality of structural members, and the result of the stress analysis for the building model satisfies the calculated required horizontal bearing capacity. Second, the default member assigned to each of the plurality of structural members is changed.

In this way, assign predetermined members to structural members so as to satisfy the long-term stress condition, short-term stress condition, target story drift angle of each floor, and required horizontal strength in the order of the building to be designed. By simply inputting the design conditions, it is possible to support the structural design of buildings using appropriate structural members.

In the design support device according to the present invention, the first assigning unit includes: a center of gravity in a top view determined by the arrangement of the plurality of structural members; The predetermined member can be assigned to each of the plurality of structural members so as to correspond to the center of rigidity. As a result, it is possible to support the structural design of the building so that the center of gravity and the center of rigidity in top view correspond to each other.

In the design support device according to the present invention, the design condition further includes a target value of a column-to-beam yield strength ratio, and the fourth assigning unit assigns the predetermined member to each of the plurality of structural members in the building model. After changing the default member assigned to each of the plurality of structural members so as to satisfy the target value of the column-to-beam yield strength ratio based on the result of the stress analysis for the calculating the required horizontal bearing capacity from the prescribed members, and changing the prescribed members assigned to each of the plurality of structural members so that the result of the stress analysis on the building model satisfies the calculated required horizontal bearing capacity; be able to. This makes it possible to support the structural design of a building using structural members that satisfy the required horizontal bearing capacity by reducing the amount of calculation only by inputting design conditions.

In the design support device according to the present invention, the design condition further includes a range of member ranks, and the member list is a member list prepared for each member rank. When selecting a member, a default member can be selected from a member list of member ranks included in the member rank range. This makes it possible to support the structural design of a building that satisfies the range of member ranks.

In the design support device according to the present invention, the design conditions include a target value for the share ratio of the brace or load-bearing wall, a target value for the verification ratio, a target value for the retained horizontal bearing capacity margin, the number of repetition calculations, or designation of material strength. can further include: As a result, it is possible to support the structural design of a building that satisfies the target value of the share ratio of braces or load-bearing walls, the target value of the verification ratio, the target value of the retained horizontal bearing capacity margin, the number of repetition calculations, or the specified material strength. can.

In the design support device according to the present invention, the plurality of can be further included a grouping processing unit that performs grouping for classifying the structural members into a plurality of groups of structural members that should have the same cross section. This makes it possible to support the structural design of a building using a more appropriate number of groups of structural members.

As described above, according to the design support system of the present invention, the conditions related to long-term stress, the conditions related to short-term stress, the target value of the interstory drift angle of each floor, and the required horizontal strength in the order of the building to be designed are set. By assigning the predetermined members to the structural members so as to satisfy the requirements, it is possible to obtain the effect that the structural design of the building using appropriate structural members can be supported only by inputting the design conditions.

1 is a block diagram showing a learning device and a design support device according to a first embodiment of the present invention; FIG. 1 is a functional block diagram showing a design support device according to a first embodiment of the present invention; FIG. It is a figure which shows an example of the input screen of design conditions. FIG. 4 is a diagram for explaining a method of generating a component list; FIG. FIG. 4 is a diagram for explaining a method of generating a component list; FIG. FIG. 10 is a diagram showing a graph representing the frequency of use of each predetermined member; It is a functional block diagram showing the configuration of a cross-sectional structure calculation unit of the design support device according to the first embodiment of the present invention. FIG. 3 is a diagram for explaining member information of a structural member; FIG. FIG. 10 is a diagram showing an example of a learned model for cross section calculation; FIG. 4 is a diagram for explaining the center of gravity and the center of rigidity of a structural member; FIG. 4 is a diagram showing an example of a table for determining structural characteristic coefficients; FIG. 4 is a diagram showing an example of a table for determining structural characteristic coefficients; FIG. 10 is a diagram showing an example of grouping results for grouping proposals; FIG. 10 is a diagram showing an example of grouping results for grouping proposals; FIG. 10 is a diagram showing an example of grouping results for grouping proposals; 1 is a functional block diagram showing a learning device according to a first embodiment of the invention; FIG. 4 is a flow chart showing contents of a design support processing routine of the design support apparatus according to the first embodiment of the present invention; 4 is a flow chart showing the flow of processing for changing assignment of default members in the design support system according to the first embodiment of the present invention; 4 is a flow chart showing the flow of grouping processing in the design support device according to the first embodiment of the present invention; FIG. 10 is a diagram showing an example of a trained model for grouping;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First embodiment]
<Configuration of the design support device according to the first embodiment of the present invention>
As shown in FIG. 1, the design support device 100 according to the first embodiment of the present invention includes a CPU 12, a graphic card 13, a GPU 14, a RAM 16, an HDD 18, a communication interface 21, and a bus for interconnecting them. 23.

The CPU 12 and GPU 14 execute various programs. The RAM 16 is used as a work area or the like when various programs are executed by the CPU 12 . The HDD 18 as a recording medium stores various programs including a program for executing a design support processing routine, which will be described later, and various data.

FIG. 2 shows the design support apparatus 100 according to the present embodiment in terms of functional blocks along with a program for executing the design support processing routine. The design support device 100 includes an input section 10 , a calculation section 20 and an output section 50 .

The input unit 10 receives information on a plurality of predetermined members, which are structural members of a building whose member information is predetermined, by the operation of the person in charge of design.

For example, member information including member rank, section modulus, cross-sectional area, and external size is received for each of a plurality of predetermined members, which are structural members of a building whose member information is predetermined, by the operation of the person in charge of design.

In addition, the input unit 10 receives an input of a building model, which is a building to be designed and includes a plurality of structural members (pillars, beams, walls, braces, etc.), operated by a designer. , accepts design conditions for the building to be designed.

For example, a plurality of structural members are arranged for each type of structural member (column, beam, wall, brace, etc.) in the building model by the operation of the person in charge of design. Then, the input screen shown in FIG. 3 is operated by the person in charge of design to receive the design conditions including the designation of the rank range of the beam-column brace.

For example, the design conditions include a long-term stress condition, a short-term stress condition, and a target story drift angle for each floor of the building to be designed.

In addition, the design conditions further include the target values of the brace share and load-bearing wall share, the target value of the verification ratio, the target value of the retained horizontal bearing capacity margin, the number of repetition calculations, the target value of the beam-to-column strength ratio, and the beam-to-column brace. Includes designation of bearing wall rank range, or designation of material strength.

On the input screen in FIG. 3, the target value of the verification ratio, the target value of the retained horizontal strength margin, whether or not to adjust the eccentricity ratio, the target value of the beam strength ratio, the number of grouping layers of the S column, the number of repetition calculations, the number of RC members It shows an example of accepting the presence/absence of examination, the presence/absence of examination of load-bearing walls, the target value of τ level at the time of primary design, and the target value of column long-term axial force ratio. In addition, this input screen shows an example of receiving the target value of the story drift angle, the specification of the rank range of the column-to-beam brace, and the specification of the strength for each floor.

The calculation unit 20 includes a member list generation unit 22 , a cross-sectional structure calculation unit 24 and a grouping processing unit 28 .

The member list generation unit 22 is a member list that stores a plurality of predetermined members for each member rank related to structural members based on information on a plurality of predetermined members that are structural members of a building whose member information is predetermined. , section modulus, section area, or outline size in ascending order.

For example, for each member rank, select default members so that the combinations of section modulus, cross-sectional area, and external size are sorted in ascending order (Fig. 4), and generate a member list arranged in ascending order (Fig. 5). .

More specifically, from a plurality of predetermined members of the member rank, first select a predetermined member with the smallest section modulus, cross-sectional area, and external size, and then select the previously selected predetermined member By repeating the selection of the predetermined member so that the section modulus is the same or larger, the cross-sectional area is the same or larger, and the external size is the same or larger, the section modulus, cross-sectional area, and external size Generates a member list consisting of default members sorted so that the combinations of are in ascending order. In FIG. 4, a dot indicating a predetermined member selected so that the section modulus is the same or larger, the cross-sectional area is the same or larger, and the external size is the same or larger than the previously selected predetermined member. is shown in the circled example. FIG. 5 shows an example in which the default members are arranged in the order in which the selected default members are arranged toward the upper right in the member list.

It should be noted that by analyzing the default members frequently used by the designer and adopting them in the member list, it is possible to select members close to the designer (FIG. 6). FIG. 6 shows an example in which default members are sorted in descending order of frequency of use, and a member list is generated using the top N default members.

The cross-sectional structure calculation unit 24 changes the default member assigned to each structural member of the building model so as to satisfy the received design conditions. At this time, predetermined members are assigned to each of the plurality of structural members of the building model so as to satisfy the long-term stress condition, the short-term stress condition, the target story drift angle of each floor, and the required horizontal strength in that order.
Specifically, the cross-sectional structure calculator 24 includes a first allocator 30, a second allocator 32, a third allocator 34, and a fourth allocator 36, as shown in FIG.

The first assigning unit 30 inputs values relating to design conditions and member information including position information of the structural members for each of the structural members of the building model. Calculate the cross-section of a structural member using the finished model and display the calculation results. For example, as a result of calculation, structural members that reflect the calculated cross section are visually displayed by superimposing them on the volume of the building, or calculation of quantity, weight, and cost using the calculated cross section of the structural members display the results.

The learned model for cross section calculation includes member information (length L in FIG. 8, angle θ, position in the building (position in the height direction, position on the plane), floor height, member density (span), burden area , load conditions, shear force burden ratio of the frame to which it belongs, etc.) are input data, and cross-sectional information representing the cross section (member width D, member composition B, member thickness t, material strength, member weight, member performance, etc.) are output data (see FIG. 9). For example, as shown in FIG. 9, a neural network can be used as an example of a model, and deep learning can be used as an example of a learning algorithm. A learned model for section calculation is trained so that section information of the data is output.

Then, for each of the plurality of structural members, the first assigning unit 30 assigns a plurality of predetermined members, which are structural members of a building with predetermined member information, prepared in advance for each member rank and the cross section of the structural member. A default member is assigned to each structural member based on a list of member ranks that satisfy design conditions among the stored member list.

Specifically, for each of a plurality of structural members included in the building model, a default member selected from a member list within a designated rank range is assigned based on the cross-sectional calculation result. At this time, a default member corresponding to the calculation result of the cross section is selected from the member list.

At this time, when a plurality of member ranks are included in the designated rank range, an integrated member list is generated by integrating the member lists of the plurality of member ranks, and a default member is selected from the integrated member list. When merging the member lists, select the default members from the member lists of multiple member ranks and arrange them in ascending order so that the combinations of section modulus, cross-sectional area, and external size are in ascending order. Generate an integrated parts list.

Here, as shown in FIG. 10, the center of gravity G and the center of rigidity R in top view are determined by the arrangement of the default members assigned to each of the plurality of structural members. FIG. 10 shows an example of the center of gravity G in the top view determined by the arrangement of the structural members indicated by the circles, and the center of rigidity R in the top view determined by the cross section of the default member assigned to the structural member. Examples and shows.

Then, the first assigning unit 30 performs stress analysis on the building model including the plurality of structural members to which the default members have been assigned, and based on the results of the stress analysis, satisfies the conditions regarding long-term stress and A default member is assigned to each of a plurality of structural members from the member list or the integrated member list so that the cross section of the default member assigned to each of the structural members of is minimized.

At this time, the plurality of structural members are arranged so that the center of gravity G in the top view determined by the arrangement of the plurality of structural members corresponds to the center of rigidity R in the top view determined by the cross section of the predetermined member assigned to the plurality of structural members. Assign a default member to each of the

Specifically, the cross section of the column having a large column axial force is increased. By increasing the cross-section of the column, the horizontal rigidity of the column increases, so the burden of horizontal force also increases.

Also, the default members to be assigned are changed according to the arrangement order of the member list or integrated member list. This is repeated until the condition for long-term stress is met.

Then, the second assigning unit 32 performs stress analysis on the building model including the plurality of structural members to which the default members are assigned, and based on the result of the stress analysis, the members are satisfied so as to satisfy the short-term stress condition. Assign a default member to each of a plurality of structural members from a list or an integrated member list.

Specifically, only the cross section of the member that is insufficient for the short-term stress is increased by the necessary amount. At this time, the default members to be assigned are changed according to the arrangement order of the member list or integrated member list. This is repeated until the conditions for short-term stress are met.

Then, the third assigning unit 34 performs stress analysis on the building model including the plurality of structural members to which the default members are assigned, and satisfies the target value of the story drift angle of each floor based on the result of the stress analysis. Assign a default member to each of a plurality of structural members from a member list or an integrated member list, such as;

At this time, since the planar rigidity balance is in place, the member cross section is changed for each layer thereafter so as not to change the planar rigidity balance.

Also, the default members to be assigned are changed according to the arrangement order of the member list or integrated member list. This is repeated until the target value of the story drift angle of each floor is satisfied.

The fourth allocation unit 36 allocates the predetermined members to each of the plurality of structural members so as to satisfy the target value of the column-to-beam strength ratio based on the result of the stress analysis for the building model in which the predetermined members are allocated to each of the plurality of structural members. Change the default part.

In this way, after the planar rigidity balance is adjusted, the default members are assigned so as to satisfy the target value of the beam-to-column strength ratio. This is because if it is done before adjusting the planar rigidity balance, it will compete with the planar rigidity balance adjustment.

Also, prior to carrying out the retained horizontal strength calculation, default members are assigned so as to satisfy the target value of the column-to-beam strength ratio. This is because the shape of collapse may change after calculating the retained horizontal strength.

Also, the default members to be assigned are changed according to the arrangement order of the member list or integrated member list. This is repeated until the target value of the beam-to-column strength ratio is satisfied.
Then, the fourth assigning unit 36 obtains structural characteristic coefficients from the member ranks of the predetermined members assigned to each of the plurality of structural members, and calculates the required horizontal strength from the structural characteristic coefficients.

When calculating the structural characteristic coefficient, refer to the table (see Fig. 11A) that stores the structural characteristic coefficient for each combination of the member rank of the member group of columns and beams, the member rank of the member group of braces, and the brace distribution ratio _βμ . Then, the structural characteristic coefficient of each floor is obtained from the member rank of the predetermined member assigned to each of the plurality of structural members and the brace share obtained from the stress analysis result for the building model.
Also, referring to a table (see FIG. 11B) storing structural characteristic coefficients for each combination of the member rank of the member group of columns and beams, the member rank of the member group of bearing walls, and the bearing wall share ratio _βμ , a plurality of Structural characteristic coefficients for each floor are obtained from the member ranks of the default members assigned to each structural member and the load-bearing wall share obtained from the stress analysis results for the building model. 11A and 11B are based on May 18, 2007 Ministry of Land, Infrastructure, Transport and Tourism Notification No. 596.

In addition, when calculating the required horizontal strength, the required horizontal strength is calculated from a formula including structural characteristic coefficients.

Specifically, from the structural characteristic coefficient of each floor, the shape coefficient of each floor obtained from the results of stress analysis for the building model, and the seismic force generated during an earthquake, the required horizontal strength Qun of each floor is calculated using the following formula. calculate.

Qun = Ds x Fes x Qud
= Ds x Fes x [W x Ci]
= Ds x Fes x [(W x (Z x Rt x Ai x Co)]

However, Ds is the structural characteristic factor of each floor. Fes is the shape factor of each story, and is a value determined by the rigidity based on the balance of deformation in the height direction and the eccentricity based on the balance of deformation in the plane direction (degree of twist). Qud is the seismic force at the time of a large earthquake occurring on each floor, and Qud=W*Ci=W*Z*Rt*Ai*Co. W is the weight of the building supported by each floor, Ci is the story shear force coefficient of each floor, Ci = Z × Rt × Ai × Co, Z is determined by the Ministry of Land, Infrastructure, Transport and Tourism based on past earthquake records It is a value that quantifies the probability of occurrence of an earthquake, and is determined by the address. Rt is a vibration characteristic coefficient, and is a value determined by the ground information and the natural period of the building. Since the natural period of a building is obtained from the building height and the structure type, it is determined by the ground information, the building height and the structure type. Ai is the distribution of the seismic layer shear force coefficient in the height direction, and is a value determined by the natural period of the building and the weight of the building when calculating Rt. Co is a standard shear force coefficient, and is 1.0 when calculating the required horizontal strength.

Then, the fourth assigning unit 36 changes the default member assigned to each of the plurality of structural members from the member list or the integrated member list until the result of the stress analysis on the building model satisfies the calculated required horizontal strength. , and calculating the required horizontal strength. At this time, the default members to be assigned are changed according to the arrangement order of the member list or integrated member list.

The grouping processing unit 28 classifies the plurality of structural members into the same group based on the characteristic amounts of each of the plurality of structural members obtained from the stress analysis results for the building model in which the predetermined member is assigned to each of the plurality of structural members. Grouping is performed to classify structural members to be divided into a plurality of groups.

Specifically, grouping is performed for each type of structural member based on the distribution of the characteristic amount of the structural member group to be grouped. A clustering method can be used as an example of a grouping algorithm.

For example, stress analysis is performed on a building model in which predetermined members are assigned to each of a plurality of structural members. Groups of structural members are clustered based on the distribution of the feature values of the group of members. Perform a stress analysis on the building model to which the default members after the change are assigned, and output the results of the stress analysis. The feature values include long-term axial force, short-term moment, short-term axial force, column length, column coordinates, etc. obtained as a result of stress analysis.

In addition, a plurality of parameter sets consisting of parameters related to grouping are predetermined, and grouping is performed using the parameter set for each of the plurality of parameter sets to obtain a plurality of grouping results (FIGS. 12A to 12C ).

The parameter set includes, for example, a K value for clustering and a weight vector consisting of weights for each feature amount.

FIGS. 12A-12C show examples of displaying three grouping results for three parameter sets. The lower side of FIGS. 12A to 12C shows an enlarged rectangular frame portion of the grouping result of the upper side.

<Structure of the learning device according to the first embodiment of the present invention>
As shown in FIG. 1, the learning apparatus 200 according to the first embodiment of the present invention includes a CPU 12, a graphic card 13, a GPU 14, a RAM 16, an HDD 18, a communication interface 21, and these A bus 23 is provided for interconnecting the .

The CPU 12 and GPU 14 execute various programs. The RAM 16 is used as a work area or the like when various programs are executed by the CPU 12 . The HDD 18 as a recording medium stores various programs including programs for executing learning processing and various data.

FIG. 13 shows the learning apparatus 200 according to the present embodiment as functional blocks along a program for executing the learning process. The learning device 200 includes an input section 110 , a calculation section 120 and an output section 150 .

The input unit 110 is a learning data including a combination of member information including position information of the structural member and the cross section of the structural member, which is obtained for each structural member (column, beam, wall, brace, etc.) from the performance information of the building. Accept data as input.

The calculation unit 120 has a learning unit 122 .

The learning unit 122 obtains a learned model for section calculation for each type of structural member based on a plurality of learning data received by the input unit 110 .

In the present embodiment, a learned model for section calculation is generated for each type of structural member (column, beam, wall, brace, etc.) and output to the design support device 100 by the output unit 150 .

<Operation of learning device>
Next, operation of the learning device 200 according to the first embodiment of the present invention will be described.

Learning data including a combination of member information including position information of the structural member and the cross section of the structural member, obtained by the input unit 110 for each structural member (column, beam, wall, brace, etc.) from the actual building information Accept data as input. Then, the learning unit 122 obtains a trained model for section calculation based on the plurality of learning data received by the input unit 110 .

<Operation of design support device>
Next, operation of the design support device 100 according to the first embodiment of the present invention will be described.

First, when the input unit 10 receives information on a plurality of predetermined members, which are structural members of a building whose member information is determined in advance, by the operation of the person in charge of design, the member list generation unit 22 of the design support device 100 generates a member list. A member list storing a plurality of predetermined members for each member rank related to structural members based on information of a plurality of predetermined members that are structural members of a building whose information is predetermined, and which includes section modulus, cross-sectional area, and A member list is generated that is arranged in ascending order of combinations of external sizes.

Then, the input unit 10 accepts an input of a building model, which is a building to be designed and includes a plurality of structural members (columns, beams, walls, braces, etc.), operated by a designer. When the design conditions regarding the building to be designed are received, the design support apparatus 100 executes the design support processing routine shown in FIG.

First, in step S100, the cross-sectional structure calculator 24 acquires a building model including a plurality of input structural members.

In step S102, the first assigning unit 30 calculates the cross section of each structural member of the building model based on the member information of the structural member using the learned model for cross section calculation, Display the calculation result. Then, for each of the plurality of structural members, the first assigning unit 30 assigns a predetermined member to each structural member based on the calculated cross section of the structural member and the member list or integrated member list of member ranks that satisfy the design conditions. assign.

In step S104, the first to fourth assigning units 30 to 36 change the default members assigned to each structural member of the building model from the member list or integrated member list so as to satisfy the received design conditions.

In step S108, the grouping processing unit 28 selects a plurality of structural members based on the feature amount of each of the plurality of structural members obtained from the stress analysis result for the building model in which the default member is assigned to each of the plurality of structural members. are grouped into a plurality of groups consisting of structural members that should have the same cross section. This grouping is performed for each parameter set related to grouping, and multiple grouping proposals are obtained.

In step S110, the output section 150 displays the grouping results for the plurality of grouping plans, and the design support processing routine ends.

The above step S104 is realized by the processing routine shown in FIG.

In step S112, the first assigning unit 30 performs a stress analysis on the building model including a plurality of structural members to which the default members are assigned, and satisfies the conditions regarding long-term stress based on the results of the stress analysis, and , assigning a default member to each of the plurality of structural members from the member list or the integrated member list such that the cross section of the default member assigned to each of the plurality of structural members is minimized.

In step S114, the second assigning unit 32 performs stress analysis on the building model including a plurality of structural members to which the default members are assigned, and based on the stress analysis result, satisfies the short-term stress condition. Assign a default member to each of a plurality of structural members from the , member list, or integrated member list.

In step S116, the third assigning unit 34 performs stress analysis on the building model including a plurality of structural members to which the default members have been assigned, and based on the results of the stress analysis, determines the target value of the story drift angle of each floor. A default member is assigned to each of the plurality of structural members from the member list or the integrated member list such that .

In step S118, the fourth assigning unit 36, based on the result of the stress analysis for the building model in which the default member is assigned to each of the plurality of structural members, assigns the plurality of structural members so as to satisfy the target value of the beam-to-column strength ratio. change the default member assigned to each.

In step S120, the fourth assigning unit 36 obtains structural characteristic coefficients from the member ranks of the predetermined members assigned to each of the plurality of structural members, and calculates the required horizontal strength from the structural characteristic coefficients. Then, the fourth assigning unit 36 changes the default member assigned to each of the plurality of structural members from the member list or the integrated member list until the result of the stress analysis on the building model satisfies the calculated required horizontal strength. , and the calculation of the required horizontal strength, and the processing routine ends.

The above step S108 is realized by the processing routine shown in FIG. This processing routine is repeatedly executed for each parameter set related to grouping.

In step S130, the grouping processing unit 28 performs stress analysis on the building model in which the default member is assigned to each of the plurality of structural members.

In step S132, the grouping processing unit 28 acquires the feature quantity of the structural member group based on the result of the stress analysis.

In step S134, the grouping processing unit 28 clusters the structural member group based on the distribution of the feature amount of the structural member group for each type of structural member.

In step S136, the grouping processing unit 28 changes the assignment of the default members to the structural members so that the structural members of the same cluster have the same cross section.

In step S138, the grouping processing unit 28 performs stress analysis on the building model in which the changed default member is assigned to each of the plurality of structural members, outputs the stress analysis result, and terminates the processing routine. .

As described above, according to the design support device according to the first embodiment of the present invention, the conditions related to the long-term stress, the conditions related to the short-term stress, the target value of the story drift angle of each floor, and the necessary By assigning predetermined members to structural members in the order of possessed horizontal strength so as to satisfy each, it is possible to support the structural design of a building using appropriate structural members only by inputting design conditions.

Further, by assigning the default members to the structural members based on the calculation results of the cross sections of the structural members and the member list in which the default members are arranged in ascending order of section modulus, cross-sectional area, and external size, By simply inputting the design conditions, it is possible to support the structural design of buildings using appropriate structural members.

In addition, until the accepted design conditions are satisfied, the default members assigned to each structural member are changed in the order of arrangement of the member list in which the default members are arranged in ascending order of section modulus, cross-sectional area, and external size. By repeating the process, it is possible to support the structural design of a building using appropriate structural members only by inputting design conditions.

In addition, after changing the default members to be assigned to each of the multiple structural members so as to meet the accepted design conditions, calculate the required horizontal strength and assign it to each of the multiple structural members until the required horizontal strength is satisfied. A building structure using structural members that satisfy the required horizontal strength by changing the default members and calculating the required horizontal strength only by inputting the design conditions and reducing the number of repetitions of calculations. Can assist with design.

[Second embodiment]
Next, a second embodiment of the invention will be described. Note that the configurations of the design support device and the learning device of the second embodiment are the same as those of the first embodiment, so the same reference numerals are assigned and the description thereof is omitted.

The second embodiment differs from the first embodiment in that grouping is performed using supervised learning.

<Structure of the learning device according to the second embodiment of the present invention>
The input unit 110 of the learning device 200 according to the second embodiment of the present invention receives learning data for section calculation as an input, as in the first embodiment. In addition, the input unit 110 inputs the structural member information of each of the two structural members for each of the structural member pairs consisting of the two structural members among all the structural members obtained for the structural members from the actual record information of the building. It accepts as an input learning data including the determination result of determining whether or not the two structural members are grouped based on each other, and the structural member information of each of the two structural members.

Specifically, from the performance information of the building, member information of the two structural members (length L, angle θ, position (height direction position, position on the plane), floor height, member density (span), bearing area, other information characterizing members (member width D, member composition B, member thickness t, etc. in Fig. 8 above) ) and the result of determining whether or not they are grouped based on the structural member information of each of the two structural members. Then, for each structural member pair, learning data including a combination of member information of two structural members and a determination result as to whether or not they are grouped is received.

In the present embodiment, this learning data is received for each type of structural member (column, beam, wall, brace, etc.).

The learning unit 122 obtains a learned model for cross-section calculation, as in the first embodiment.

Also, the learning unit 122 obtains a trained model for grouping based on the learning data.

Specifically, as shown in FIG. 17, the trained model for grouping uses the feature amounts of two structural members as input data, and the degree of grouping of the two structural members as output data. For example, a neural network can be used as an example of a model, and deep learning can be used as an example of a learning algorithm. A learned model for grouping is generated for each type of structural member (column, beam, wall, brace, etc.).

<Configuration of the design support device according to the second embodiment of the present invention>
The grouping processing unit 28 of the design support device 100 of the second embodiment consists of two structural members out of all generated structural members for each type of structural member (column, beam, wall, brace, etc.) For each structural member pair, the degree of grouping is calculated based on the feature values of each of the two structural members and the learned model for grouping, and the degree of grouping is calculated so that the designated number of groups is achieved. Group the structural member pairs in descending order of .

Specifically, the grouping processing unit 28 divides each structural member pair consisting of two structural members out of all the structural members into two The degree of grouping is calculated based on the structural member information of each structural member and the learned model for grouping the types of structural members.

For example, for each structural member pair, member information of two structural members (length, angle, position in the building (position in the height direction, position on the plane), floor height, member density (span), burden area, Other information that characterizes the member) is input to the learned model for grouping to determine the degree of grouping.

Then, the grouping processing unit 28 divides the two structures of the structural member pair in descending order of the degree of grouping so that the designated number of groups is obtained for each type of structural member (column, beam, wall, brace, etc.). Grouping members into the same group is repeated. As a result, grouping results for the specified number of groups are obtained. Also, the designation of the number of groupings is changed in order, and the structural member pairs are grouped in the same manner. As a result, grouping results for a plurality of grouping proposals are obtained.

Other configurations and actions of the design support device 100 and the learning device 200 of the second embodiment are the same as those of the first embodiment, and thus description thereof is omitted.

As described above, according to the design support device according to the second embodiment of the present invention, the predetermined member are assigned, and based on the feature values of each of the multiple structural members obtained from the stress analysis results for the building model, the degree to which grouping should be performed is calculated, and by grouping the multiple structural members, the design conditions , it is possible to support the structural design of a building using an appropriate number of groups of structural members.

The present invention is not limited to the above-described embodiments, and various modifications and applications are possible without departing from the gist of the present invention.

For example, in the above-described embodiment, the case where the learning device and the design support device are configured as separate devices has been described as an example. may be configured as one device.

Also, the program of the present invention may be stored in a storage medium and provided.

10, 110 Input unit 12 CPU
20, 120 calculation unit 21 communication interface 22 component list generation unit 24 cross-sectional structure calculation unit 28 grouping processing unit 30 first allocation unit 32 second allocation unit 34 third allocation unit 36 fourth allocation unit 50, 150 output unit 100 design support Device 122 Learning unit 200 Learning device

Claims (6)

A building model that is a building to be designed and includes a plurality of structural members, a long-term stress condition, a short-term stress condition, and a target value of interstory drift angle of each floor for the building to be designed. an input unit that receives design conditions;
A condition regarding long-term stress is satisfied based on the result of stress analysis for the building model in which each of the predetermined members selected from a member list storing predetermined members whose member information is predetermined is assigned to each of the plurality of structural members. and a first allocation unit that allocates the predetermined member to each of the plurality of structural members so that the cross section of the predetermined member that is allocated to each of the plurality of structural members is minimized;
changing the default members assigned to each of the plurality of structural members so as to satisfy conditions relating to short-term stress based on the result of stress analysis for the building model in which the default member is assigned to each of the plurality of structural members; a second allocation unit;
The default member assigned to each of the plurality of structural members so as to satisfy the target value of the story drift angle of each floor based on the result of stress analysis for the building model in which the default member is assigned to each of the plurality of structural members a third allocation unit that changes the member;
calculating the required horizontal bearing capacity from the predetermined members assigned to each of the plurality of structural members; a fourth assigning unit that changes the default member assigned to each of the members;
design support equipment including The first assigning part associates the center of gravity in top view determined by the arrangement of the plurality of structural members with the center of rigidity in top view determined by the cross section of the predetermined member assigned to the plurality of structural members, 2. The design support device according to claim 1, wherein said predetermined member is assigned to each of said plurality of structural members. The design conditions further include a target value for the column-to-beam yield strength ratio,
The fourth assigning unit assigns the predetermined member to each of the plurality of structural members, based on a stress analysis result for the building model, so as to satisfy the target value of the beam-to-column strength ratio. After changing the default members assigned to each of the members, the required horizontal strength is calculated from the default members assigned to each of the plurality of structural members, and the result of the stress analysis for the building model is the calculated 3. The design support device according to claim 1, wherein the predetermined member assigned to each of the plurality of structural members is changed so as to satisfy the required horizontal strength. The design conditions further include a range of member ranks,
The member list is a member list prepared for each member rank,
Any one of claims 1 to 3, wherein, when selecting a default member to be assigned to the structural member from the member list, the default member is selected from a member list of member ranks included in the member rank range. The design support device described. The design conditions further include a target value for the share ratio of the brace or load-bearing wall, a target value for the verification ratio, a target value for the retained horizontal bearing capacity margin, the number of iterative calculations, or designation of material strength. The design support device according to any one of 1. Based on the feature quantity of each of the plurality of structural members obtained from the result of stress analysis of the building model in which a predetermined member is assigned to each of the plurality of structural members, the plurality of structural members are arranged to have the same cross section. 6. The design support system according to any one of claims 1 to 5, further comprising a grouping processing unit for grouping structural members to be classified into a plurality of groups.

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