JPH11117383A - Structural design supporting system and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a structural design by a person being not a skilled engineer by a method wherein a means to effect building fundamental data and a construction work, a means to set load and a wall shearing force sharing rate, means to study rigidity, calculate a section and process rigidity and a load when a section is varied, and a means to calculate a skeleton quantity are provided, and each means uses producing data by using the data in common with each other. SOLUTION: When a set part 43 for building fundamental data and construction inputs building fundamental data, an assuming section is automatically calculated and a result is stored at common data 53. A skeleton quantity computing part 49 calculates a skeleton quantity based on data of an assumed section. Thereafter, a structure study.section computing part 47 executes section computation of only a member forming a reference and stores a result at the common data 53. The quantity computing part 49 computes a skeleton quantity based on data of only a reference member stored at the common data 53. The section computing part 47 effects section study of all members, and the quantity computing part 49 computes a total reset value of a skeleton quantity. Thus, structural calculation is practicable even by a person being not a skilled engineer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used when designing a structure, and is a structure planning support system capable of easily performing processing such as cross section calculation, and a recording medium storing a program used in the structure planning support system. It is about.

[0002]

2. Description of the Related Art A conventional structural plan has been performed as follows. First, a hypothetical section is determined from the experience and know-how of a skilled technician, the weight and rigidity are calculated based on the section and the span split, and the design stress is calculated to calculate the cross section. If the cross section calculation is not appropriate, the cross section, the wall shear force sharing ratio, the floor structure, etc. are changed, and the convergence calculation is performed until the cross section calculation becomes valid.

[0003]

At this time, the weight and rigidity are calculated only when the cross section is determined, and the stress is calculated based on the calculated weight and rigidity. When calculating the cross section for this stress, if the cross section is changed, inconsistency always occurs between the stress and the cross section. In particular, when the wall shear force sharing ratio and the floor structure are changed, if the stress is calculated by changing the initial values such as the cross-sectional input, a large difference may occur between the initially set design stress and the design stress. Therefore, when the structure type or the like is changed, the weight and the cross section itself are greatly different, so that a series of structural plans must be redone.

As described above, in the conventional integrated structure calculation program and stress analysis program, even if only a part of the cross section is corrected, the whole must be solved again by weight and rigidity evaluation in order to calculate the stress. When the cross section was corrected, it was necessary to re-input the input data and solve the whole.

In the basic planning stage, a lot of time is required for structural planning, and the frame that can be compared and examined within a limited time is actually limited. Of experience and know-how. The reason why the time required for the structural planning is long is that similar processing must be performed until convergence when the structural plan is changed.

As described above, conventionally, when calculating the stress,
Even if the settlement method (matrix method) is used, the D value method (rough calculation method)
However, since stress cannot be calculated unless the entire building is targeted, a series of stress calculations must be performed for the entire building even if only a part of the cross section is changed. It is a fact that this stress calculation takes several minutes only in the stress calculation part if the integrated structure calculation program is executed by the settlement method (matrix method) even at the recent high-speed personal computer level.

[0007] One of the factors in which an answer cannot be obtained unless calculation is performed for all frames even in the approximate method is calculation of axial force. Axial force cannot be calculated without summing up the beam shearing force of each layer in the case of the D value method as well as the settlement method. FIG. 23 is an explanatory diagram of a conventional axial force calculation method. For example, even when obtaining the axial force of the column 100,
It was necessary to determine the axial force of the column above it.

[0008] As described above, in the conventional structural planning, a hypothetical section is set in order to calculate rigidity and weight under certain design conditions, and stress is calculated from the relationship between the rigidity and weight to determine whether the assumed cross section is appropriate. To consider. If improper, the cross section is changed, but if the cross section changes, the rigidity, weight, and stress naturally change. It repeats many times until the cross section is appropriate. The setting of the assumed cross section largely depends on the experience and know-how of a skilled engineer.

In most of the conventional structural calculation systems, a result cannot be obtained unless a section is given as input data, and the calculation must be performed until the section becomes appropriate, which takes time. . In addition, a system for calculating a hypothetical section has also been devised, but after setting the hypothetical section, it is the same as the conventional work routine, and if the section becomes inappropriate, the calculation must be performed again. .

[0010] As described above, the reason why the stress calculation cannot be recalculated without contradiction by changing the cross section on the spot is a member used as a reference for determining the cross section. To determine the shape, but even if the stress of the target section is calculated, the stress cannot be calculated without recalculating the entire weight and rigidity,
Currently, the calculation time required for this is several minutes for settlement, and several tens of seconds even for the D value method, so performing the stress calculation every time requires a very long waiting time and is inefficient. is there.

The present invention has been made in view of such a problem, and an object of the present invention is to allow a non-skilled engineer to perform a structural planning in a short time when performing a structural planning. It is to provide a structural planning support system.

[0012]

Means for Solving the Problems In order to achieve the above-mentioned object, a first invention is a means for setting basic building data and a frame, a means for setting a load and a share ratio of a wall shear force, Examining the structure, calculating the cross-section, when changing the cross-section, comprising means for processing rigidity and load without contradiction, and means for calculating the number of frames, each of the means is generated This is a structural planning support system characterized by using common data. In the first invention, when the structure is examined, the cross section is calculated, and when the cross section is changed, the rigidity and the load are processed without contradiction, so that the time required for the structure planning is reduced.

A second aspect of the present invention provides a means for setting basic building data and a frame, a means for setting a load and a wall shear force sharing ratio, a study of a structure, a calculation of a cross section, and a change of a cross section. Sometimes, there is a means for processing rigidity and load without contradiction, and a means for calculating the number of frames, each of the means functions independently, and each of the means, the data generated by each common data And overwriting the newly generated data on the common data. In the second invention, each means uses the data generated by each means as common data and overwrites the newly generated data on the common data, so that information is obtained with a work amount according to the accuracy of the intended result. be able to.

According to a third aspect of the present invention, in calculating a stress at the time of designing a structure, a shear force and a bending moment are calculated by a D value method, and an axial force is calculated using a shear force of a beam connected to the column. This is a structural planning support system characterized by calculating, and can calculate stress in a short time.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of a structure planning support system according to the present embodiment. The structure planning support system is executed by a personal computer or the like, and its programs and data are recorded on a recording medium such as a floppy disk. . Structural planning support system 1
Is a building basic matter input unit 3, a frame creation unit 5, a load data setting unit 7, a wall shear force sharing ratio setting unit 9, a structure study unit 1.
1, a quantity calculation unit 13 and a calculation result output unit 15 are provided.

The load data setting unit 7 is a floor load setting unit 1
7. It comprises a seismic force setting unit 19. The structural examination section 11 includes a girder section calculation section 21, a column section calculation section 23, a section calculation section 25 for earthquake-resistant walls and braces, a girder floor and section calculation section 27, a frame data correction section 29, a column long-term axial force section 31, The display unit 33 includes a horizontal force distribution ratio display unit 33, a horizontal rigidity display unit 35, a center of gravity / rigidity display unit 37, and a wall / column amount display unit 39.

The basic building item input unit 3 inputs a basic structure (span length, etc.) of a building for which a structural plan is to be made. The frame creation unit 5 creates a frame based on basic building items. Here, the frame means a frame, a wall and a place, and the frame means a column and a beam.

The load data setting section 7 sets floor load and seismic force. In this case, the computer uses a default value (the default value is a value obtained by automatically inputting an input load or the like corresponding to the item when the item is selected from the pull-down menu) or the like. The load and seismic force can be automatically set, and the floor load and seismic force can be easily changed according to an operator's instruction. The wall shear force sharing ratio setting unit 9 sets the ratio of the shear force sharing between the wall and the frame. The wall shear force sharing ratio refers to the ratio of the shear force that the wall bears to the shear force that the frame (frame and wall) bears.

The structural examination section 11 calculates the cross sections of the girders, columns, small beams, etc. (21, 23, 25, 27), corrects the frame data (29), and calculates the long-term axial force of the columns (31). , The horizontal force distribution rate, the horizontal rigidity of the building, the center of gravity / rigidity, and the amount of walls / columns are displayed (33, 35, 37, 39).

The quantity calculation unit 13 calculates the quantity of the frame, for example, the quantity of concrete and the amount of reinforcing steel. Output part 1 of calculation result
5 outputs the calculated result. FIG. 2 shows the structural planning support system 1 in another expression method. The structural planning support system 1 is a basic building data / frame setting unit 4
3, a seismic force and wall shear force share ratio setting unit 45, a structural examination / section calculation unit 47, a frame quantity calculation unit 49, a coefficient processing / output unit 51, common data 53, and the like.

The building basic data / frame setting unit 43 is shown in FIG.
Corresponding to the building basic matter input unit 3 and the frame creation unit 5.
The seismic force / wall shear force sharing ratio setting unit 45 corresponds to the load data setting unit 7 and the wall shear force sharing ratio setting unit 9. The structure examination / section calculation unit 47 corresponds to the structure examination unit 11. The frame quantity calculating section 49 corresponds to the quantity calculating section 13. The coefficient processing / output unit 51 corresponds to the calculation result output unit 15. The common data 53 is weight, rigidity information, frame quantity information, and the like.

In the structural planning support system 1, a basic building data / frame setting unit 43, a seismic force / wall shear force sharing ratio setting unit 45, and a structural examination / section calculation unit 4 shown in FIG.
7. The frame quantity calculation unit 49 and the coefficient processing / output unit 51 are independent of each other, and the data generated by their respective functions is accumulated as common data 53, and the accumulated common data 53 is used by each unit.

For example, when the basic building data / frame setting unit 43 inputs the basic building data, the assumed cross section and the like are automatically calculated, and the data of the assumed cross section is stored in the common data 53. The frame quantity calculating unit 49 calculates the frame quantity based on the data of the assumed cross section.

After that, the structural examination / section calculation unit 47 calculates the section of only the reference member, and the data of the section is stored in the common data 53. Frame quantity calculation unit 49
Calculates the number of frames based on the cross-sectional data of only the reference member stored in the common data 53. In addition, the structural examination / cross-section calculator 47 performs a structural study on all members, and the frame quantity calculator 49 calculates the frame quantity as a settlement value.

Further, a basic building data / frame setting unit 4
When the structural type is changed according to 3, the frame quantity calculating unit 49
Calculates the number of buildings having different structural types using the common data 53. Then, the structural examination / section calculation unit 47
The cross-section calculation is performed again, and the skeleton quantity calculating unit 49 calculates the settlement value of the skeleton quantity after the structural type change using the common data 53.

As described above, according to the structural planning support system 1, when obtaining information of a target accuracy, the information can be obtained with a work amount corresponding to the accuracy of the target result. There is no conventional structure calculation program capable of processing the input information amount by its own judgment in order to obtain a result corresponding to the accuracy. That is, in the conventional structural calculation program, a result cannot be obtained without inputting predetermined data. Therefore, the same data input operation must be performed regardless of whether the desired result level is a settlement or a rough estimate.

In the structural planning support system 1, data may be input according to the result of the target level. In other words, the level of the result increases according to the amount of data input work performed by the user. The degree of the result is not a digital delimitation of approximation and settlement, but the result changes for each input data.

Accordingly, a dramatic improvement in work efficiency can be expected from a series of structural plans from the grasp of the quantity at the approximate level to the beginning of planning, basic planning, and implementation design. The reason why the structure planning support system 1 can obtain the information with the amount of work corresponding to the accuracy of the target result will be described later.

Next, the processing procedure of the structure planning support system 1 will be specifically described. FIG. 3 is a data input screen in the building basic data / frame setting unit 43, in which a span length and the like are input.

FIG. 4, FIG. 5, and FIG. 6 show frame editing screens, which show perspective views, plan views, and elevation views of structures. When data as described above is input, the frame is automatically set. Is done. Further, special conditions (setback, column plate, beam plate, column passing, continuous beam, axis tilt, etc.) can be set.

FIG. 7 shows a screen for changing the floor load, and FIG. 8 shows a screen for changing the seismic force. When the frame is set, the setting unit 45 of the seismic force / wall shearing force sharing ratio determines the seismic force and the floor load using default values such as seismic force. Floor load and seismic force can be changed. Fig. 9 shows the setting part 4 of the seismic force / wall shear force sharing ratio.
5 shows the wall shear force sharing ratio calculated in accordance with Example 5.

Next, the outline of the processing of the structural examination and section calculating section 47 will be described. The structural examination / section calculation unit 47 changes the structural plan (for example, section change,
Wall shear force sharing ratio), weight, rigidity, and stress are handled consistently. In order to be consistent, the weight must be regained, the stiffness recalculated, the stress calculated, and the calculation performed on the entire frame. However, if the calculation is performed every time one member is changed, the work efficiency is extremely deteriorated. Therefore, a method capable of high-speed processing has been devised by improving a stress calculation portion requiring time. This includes calculation processing based on the rigidity of the D value method and calculation processing of the axial force that requires calculation of the stress of the entire frame. The axial force calculation process will be described below.

FIG. 10 is an explanatory diagram of the calculation of the axial force in the present embodiment. In FIG. 10, 54 is a structure, 5
5 is a layer moment, 56 is a column for which the axial force N is to be calculated, 57
Indicates a beam in that layer.

In the present embodiment, as shown in FIG.
The axial force N is calculated from the beam shear force Q and the layer moment MI. Assuming that N = f (Mi), N = f (Qi) (1) More specifically, N = △ N × n2 / (2n−1) (1 ′) where n is the number of layers above the column for which the axial force N is to be obtained. It is the shear force of the beam in the layer for which the force N is to be obtained.

Equation (1 ') is a theoretical equation in the case where the relationship between the layer moment and the shear force distribution is based on the same floor and the same mass, and the equation (1') includes the Ai distribution (vertical).
distribution for storage s
The value obtained by correcting the “ear coefficient” and the floor height almost represents the correct answer value in the range of a general building.

FIG. 11 is a moment diagram near the column 56, where Mc1 is the capital of the column 56 and Mc2 is the column 58.
And Mb is the moment at the end of the beam 57. FIG. 12 is a shear force diagram near the column 56, and Qc1
Is the shear force of column 56, Qc2 is the shear force of column 58, Qb
Is the shear force of the beam 57.

In this embodiment, the shear forces Qc1, Qc
2, Qb and bending moments Mc1, Mc2, Mb are determined using the peripheral information by the D value method. The surrounding information is the D value of the column to be obtained and the column connected to the column, the rigidity of the beam, and the design shear force of the layer. Further, the axial force N is calculated using the equation (1 ′). When calculating the axial force N using the equation (1 ′), ΔN corresponds to Qb, so that it is not necessary to calculate the axial force of the upper layer, and the calculation can be performed.

Next, the structure study / section calculation unit 47 will be described in more detail. FIG. 13 is an explanatory diagram showing the processing of the structure study and section calculation unit. The common data 13 includes weight, rigidity information 81, frame quantity information 83, frame structure information,
It comprises member cross-section information, wall shear force sharing ratio, quantity coefficient information 85, and the like. When a structural study is performed (step 61), the weight and rigidity are automatically calculated, and the D value and the beam rigidity ratio of the entire column are all solved (step 63). Next, the target member is selected, the cross section is calculated, and the stress is calculated from the information around the member as described above (step 67). Then, information on the peripheral members is displayed on the screen.

Next, if the calculation of the cross section is not appropriate, a change in the cross section shape, a change in the wall shear force sharing ratio, and the like are performed (step 69). The cases where the calculation of the cross section is not appropriate include the case where the stress exceeds the allowable stress, the case where the yield moment is reached in the steel beam and shear fracture occurs, and the case where the required reinforcing bar amount exceeds the specified value.

The changed cross-sectional shape, the wall shear force distribution ratio, and the like are changed in the common data 13. Then, in the changed cross section, the stress calculation is calculated from the information around the member (step 71). If the cross section is not appropriate, steps 69 and 71 are repeated. If the cross section is valid, the cross section information and the like are changed in the common data 13, and the weight and rigidity are calculated in conjunction therewith (step 7).
3) Registered in the common data 13.

FIG. 14 shows a menu screen of the structural examination and section calculation section 47. FIGS. 15 and 16 show cross-section calculation screens. FIG.
The stress in a short term or the like is displayed. FIG. 16 displays the stress level, the margin, the required number of reinforcing bars, and the like.

FIG. 17 is a display screen of the position of the center of gravity and the position of the rigidity calculated by the structural examination / section calculation unit 47.
Is a screen displaying the center of gravity and the position of the center of rigidity calculated by the structural study / cross-section calculator 47.

FIGS. 19 and 20 are screens showing the display results of the wall quantity and the column quantity, and FIG. FIG. 22 is a screen showing an output result of the coefficient processing / output unit 51. For example, when all the coefficients are 1.0,
Calculate the length and weight without considering the extra reinforcing bars for each member. In addition, various uses are possible by inputting coefficients. As described above, according to the present embodiment, when performing the structural planning, it is possible to perform the structural planning in a short time without a skilled technician.

Next, the reason why the information can be obtained with the amount of work corresponding to the accuracy of the target result by using the structural planning support system 1 will be described in further detail.
This structure planning support system 1 is described below in (1) to (1).
It has the function of (3). (1) As shown in FIG. 2, the structural planning support system 1
The building basic data / frame setting unit 43, seismic force / wall shear force sharing ratio setting unit 45, structural study / section calculation unit 4
7. The frame quantity calculating unit 49 and the coefficient processing / output unit 51 are each divided into blocks, and each block can operate independently.

In the structural planning support system 1, the order after inputting the initial frame information can be processed irrespective of the order, and alternate traffic is possible. That is, if the data is shared and each block is experienced, each block has a one-to-one correspondence with the common data 53, and is coded so as not to be related to other blocks. Common data 53
And the latest data is always reflected in the common data 53.

(2) By simply selecting the basic building information (10 items) from the pull-down menu, an empirical / theoretical numerical value corresponding to the selected item is input as a default value. 1
Information necessary for the basic plan is estimated from extremely small information of 0 items, and a numerical value is given. For example, if the floor finish is selected from the pull-down menu, the LL (live load) and (design load) are automatically set separately for the roof surface and the general floor. The estimation is advanced, such as estimating the cross section of the beam, and the data to be input by the user is automatically input.

The rigidity and weight used in the stress calculation are calculated based on the initial data, and furthermore, based on the experience and know-how of a skilled technician who matches the stress from the stress and satisfies various conditions such as vibration characteristics. Automatically present the calculated cross section. In this way, data is not easily input as in the case of a default value that simply gives a constant. When a detailed examination is performed, a detailed examination can be performed by inputting (overwriting) the default value as data. That is, the user can control where the default is to be considered and where to consider in detail.

(3) As described above, the results of stress calculation are processed on the spot by the structural examination / cross section calculation unit 47 without inconsistency in rigidity and weight. In order to efficiently carry out the convergence calculation of the structural plan, which took a lot of time, the information around the target member, which is the basis of the structural plan, was used so that the consistent stress calculation and section calculation could be performed immediately. Calculate the stress from.

As described above, in the present embodiment, (1) to
With the function of (3), if you enter basic information,
As described in (2), information is estimated to provide initial information, and stored in the common data 53 as described in (1). Further, if the stress calculation section calculation is performed by the structural examination / section calculation section 47 and the section is not appropriate or the inappropriate section is changed, as described in (3), the stress and the section (weight, Stiffness) is processed without contradiction, and an appropriate cross section can be set. Only the reflected information (changed data and related data) is stored in the common data 53.

Then, as described in (1), each block is independent and the data is stored as the common data 53, so that the operation can be performed regardless of the order. In addition, as described in (2), the accuracy of the information is improved by overwriting the information in detail based on the generated information, so that the work corresponding to the target level may be performed. Will be.

[0051]

According to the first aspect of the present invention, as described in detail above, a structural planning can be performed in a short time by a non-skilled engineer. According to the second aspect of the present invention, the information can be obtained with an amount of work corresponding to the accuracy of the target result. According to the third and fourth aspects of the present invention, the stress can be calculated in a short time. it can.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a structural planning support system 1

FIG. 2 is a diagram showing the structural planning support system 1 in another expression.

FIG. 3 shows a data input screen.

FIG. 4 is a diagram showing a frame editing screen.

FIG. 5 is a diagram showing a frame editing screen.

FIG. 6 is a diagram showing a frame editing screen;

FIG. 7 is a diagram showing a screen for changing a floor load.

FIG. 8 shows a seismic force change screen.

FIG. 9 is a diagram showing a shear force sharing ratio of a wall.

FIG. 10 is an explanatory diagram of calculation of an axial force.

FIG. 11 is a diagram showing a layer moment.

FIG. 12 is a diagram showing a shear force.

FIG. 13 is an explanatory view showing the processing of the structural examination section calculation unit 7;

FIG. 14 is a diagram showing a menu screen of the structural examination section calculating unit 7;

FIG. 15 is a diagram showing a section calculation screen.

FIG. 16 is a diagram showing a section calculation screen.

FIG. 17 is a diagram showing a display screen of a center of gravity and a center of rigidity;

FIG. 18 is a diagram showing a display screen of a center of gravity and a center of rigidity.

FIG. 19 is a diagram showing a display screen of a wall amount and a column amount.

FIG. 20 is a diagram showing a display screen of a wall amount and a column amount.

FIG. 21 is a diagram showing a display screen of the number of frames.

FIG. 22 is a diagram showing a display screen of a quantity coefficient.

FIG. 23 is an explanatory diagram of conventional calculation of the axial force by the D-value method.

[Explanation of symbols]

 1 ……………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………… Numerical information for the purpose of the invention Quantity calculation unit 51: Coefficient processing / output unit 53: Common data

Continuing from the front page (72) Kazuo Wakasugi, Kashima Construction Company, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Manabu Masuda Kazuki Kashima, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Mitsuyuki Okano Kashima Construction 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Corporation (72) Inventor Yukio Endo 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Corporation

Claims (7)

[Claims] 1. A means for setting basic building data and a frame, a means for setting a load and a wall shear force sharing ratio, a structure is examined, a cross section is calculated, and when a cross section is changed, rigidity is changed. And a means for processing the load without contradiction, and a means for calculating the number of frames, wherein each of the means uses data generated by each of them in common. 2. A means for setting basic building data and a frame, a means for setting a load and a wall shear force sharing ratio, a structure is examined, a cross section is calculated, and when a cross section is changed, rigidity is changed. And a means for processing the load without contradiction, and a means for calculating the number of frames. Each of the means functions independently, and each of the means uses data generated by each as common data, A structure planning support system, wherein data generated in step (b) is overwritten on the common data. 3. In calculating the stress at the time of designing a structure, the shear force and the bending moment are calculated by the D value method, and the axial force is calculated by using the shear force of the beam connected to the column. Characteristic structural planning support system. 4. The axial force N is as follows: N = △ N × n 2 / (2n−1) where n is the number of layers above the column for which the axial force N is to be determined ΔN is the axial force N The structural planning support system according to claim 3, wherein the calculation is performed based on a shearing force of a beam connected to the column to be obtained. 5. A computer comprising: means for setting basic building data and a frame; means for setting a load and a wall shear force sharing ratio; means for examining a structure and calculating a cross section; A computer-readable recording medium that records a program that uses the data generated by each of them as a unit for performing calculation. 6. A computer, a means for setting basic building data and a frame, a means for setting a load and a wall shear force sharing ratio, a structure is examined, a cross section is calculated, and a cross section is changed. Means for processing rigidity and load without inconsistency, and means for calculating the number of frame members, each of the means functions independently, and each of the means uses data generated by each as common data, A computer-readable recording medium recording a program for overwriting newly generated data with the common data. 7. In calculating a stress at the time of designing a structure, a shear force and a bending moment are calculated by a D value method, and an axial force is calculated using a shear force of a beam coupled to the column. A computer-readable recording medium that records a program to be executed by the computer.