JP2001282872A - Structural computation device for unit scheme building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structural computation device for unit scheme buildings by which input work can be easily done and a structural computation can be promptly performed. SOLUTION: In a structural computation of a unit scheme building in which plurality of building units, having three-dimensional frames comprising plurality of columns whose top and bottom ends are jointed with beams, are combined, a vertical plane grid which is latticed along the longitudinal direction of the beam of the building unit are virtually set, a rectangular frame formed by column and beams included in this vertical plane grid is taken as the two-dimensional model of the frame, and a structural computation is performed based on this two-dimensional model. Thereby, unlike the constructing three- dimensional model data, the necessary amount of data is reduced to a large extent, the data input work is alleviated, and the structural computation can be performed easily and promptly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for calculating the structural strength of a unit-type building by calculating the retained horizontal strength and the like of the frame of the unit-type building and analyzing the frame.

[0002]

2. Description of the Related Art Conventionally, unit-type buildings in which a plurality of rectangular parallelepiped building units in which the upper and lower ends of four corner columns are connected by beams have been used. According to such a unit-type building, since the building units combined at the construction site are manufactured at the factory, the construction work at the construction site is greatly reduced, and the construction is completed in a short time. Is obtained. On the other hand, in order to confirm whether or not the building can withstand earthquakes sufficiently, the structure of the steel frame as the structural body of the building is analyzed. In recent years, with the development of computer technology, it has become possible to analyze the structure of a steel frame using a personal computer. The applicant of the present application has proposed a structural analysis device that enables a structural analysis of a frame of a unit building to be performed by a personal computer (Japanese Patent Laid-Open No. 2000-57181). This structural analysis device has a central processing unit for performing structural calculations, and a storage device in which data on each frame of a plurality of types of building units used for forming a unit-type building is stored. Then, in performing the structural analysis, a three-dimensional model of the frame of the unit-type building is formed in the virtual space in the structural analysis device, and the central processing unit performs the structural calculation of the unit-type building based on the model. Has become. According to such a structure analysis device, since the structure calculation is performed based on the three-dimensional model, it is possible to perform the structure analysis with excellent accuracy.

[0003]

However, in the above-mentioned structural analysis apparatus, in order to form a three-dimensional model,
Input work is required to arrange all the building units that make up the unit-type building in three dimensions, and input work must be performed for multiple setting items set for each building unit, making input work easy. However, there is a demand for a structure calculation device that can easily perform an input operation.

[0004] An object of the present invention is to facilitate input work,
It is an object of the present invention to provide a structural calculation device for a unit-type building that enables a structural calculation to be performed quickly.

[0005]

According to the present invention, referring to the drawings, the present invention comprises a three-dimensional frame in which the upper and lower ends of a plurality of columns are connected by beams, and the planar shapes of the frames have different lengths. A structural calculation device for a unit-type building in which a plurality of rectangular building units having sides and short sides are combined, wherein a lattice-like structure is formed along a longitudinal direction of the beam of the building unit forming the unit-type building. Elevation grid setting means 33 for virtually setting an elevation grid, and inputting a member to be one of the column and the beam along the elevation grid, and inputting a joining state of the members. And member input means 34. In the present invention, the elevation grid is set along the beams of the frame of the building unit constituting the unit-type building, and for each rectangular frame-shaped structure formed by the columns and beams included in the elevation grid. Since the structural calculation is performed, the model for performing the structural calculation is two-dimensional, and the number of necessary data is significantly reduced as compared with forming a three-dimensional model. Moreover, in a unit-type building, since the same structure is horizontally arranged in plural at predetermined intervals, data input for the same structure is
It is not necessary to perform the operation twice, and it is sufficient to perform the input operation only for different structures along the long side direction and the short side direction. In addition, when setting the position of the member data, the elevation grid indicates the position where the member can be set, and serves as a guide for setting the member position, so that the input operation of the member data can be easily performed. Thus, the data input operation is reduced, and the data input operation can be performed easily and quickly.

[0006] In the above, the elevation grid is set on the center of the unit building extending in the horizontal direction, and in setting the elevation grid,
An outer street along the outer wall surface of the unit building, and one of the inner streets crossing the inside of the unit building in plan view, and along the long side of the building unit A center, and a center selection means 32 for selecting one of the center along the short side is provided, and the elevation grid setting means 33 is provided along the center selected by the center selection means 32 as described above. It is desirable to set an elevation grid. In a unit-type building, a rectangular frame-shaped surface composed of columns and beams is placed on the center of the street. Thus, the gravitational load and the horizontal load applied to the structure can be directly input as data. In addition, the way the load is applied is different between the surface located at the outer core along the outer wall of the unit building and the inner surface located across the inside, so the outer By inputting whether the elevation grid is along the street or the inner street, it is possible to automatically calculate the load applied to the surface set on the elevation grid, Saves time. Similarly, between the long side and the short side of the building unit, the distance between the columns arranged along the street is different, and the way of applying the load is different, so the elevation grid along either the long side or the short side If it is input, it is possible to automatically calculate the load applied to the construction surface set in the elevation grid,
The effort of inputting the load can be saved.

[0007] Further, fulcrum setting means 36 for setting a fulcrum, which is a point at which the first-floor building unit and the foundation are engaged with each other, on a coordinate axis extending in the horizontal direction of the elevation grid may be provided. preferable. In this way, the junction points of the upper and lower building units can be reflected on the modeled surface on the elevation grid, and the floor beams, such as entrance building units and carport building units, can be reflected. When conducting a structural analysis of a building unit that is partially omitted and has studs, a newly created fulcrum can be set by omitting the floor beams and studs, and the entrance building unit and carport Structural analysis can be performed with high accuracy even if a building unit or the like is included.

Further, a rigid region setting means 35 for setting a rigid region in which horizontal bending does not occur at a portion of the elevation grid corresponding to a position where two vertically stacked building units are overlapped. Is desirably provided. The part where the two building units stacked vertically are overlapped, the ceiling beam of the building unit on the lower floor and the floor beam of the building unit on the upper floor are bundled, and even if a horizontal load is applied. This is a portion where the deflection in the direction is extremely small. As described above, in the part corresponding to the position where the two building units overlap,
If a rigid body region is set, the part where the ceiling beam and the floor beam are bundled can be reproduced in a two-dimensional model, and the structural analysis can be performed with high accuracy.

Further, basic information input means 31 for inputting an area where the unit-type building is built, the number of floors of the unit-type building, and a form of a frame of a building unit provided in each floor are provided. Is desirable. In this way, if the area where the unit-type building is built is input, the average snowfall in that area can be grasped, and the snowfall load based on the weight of the snow accumulated on the roof of the unit-type building from this average snowfall can be determined. Can be automatically calculated, and high-precision structural analysis can be performed in consideration of the influence of the snow load. Also, if the level of the unit-type building and the form of the frame of the building unit provided in each level are input, the weight of each level of the unit-type building itself can be obtained from the data on the members of the columns and beams constituting the frame. Since the calculation can be automatically performed, it is not necessary to input the weight of each building unit constituting the unit-type building, and the input operation can be easily performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a structure calculation apparatus 1 according to the present embodiment. The structural calculation device 1 performs a structural calculation of a unit-type building in which a plurality of building units each having a three-dimensional frame in which upper and lower ends of columns are connected by beams are combined. The building unit frame is
It has a so-called ramen structure in which beams are rigidly connected to columns. The structure calculation device 1 includes a central processing unit 2 which is a main component of the device, a man-machine interface such as a keyboard 3, a mouse 4 and a display 5, and a printer 6 for printing a result of the structure calculation. It has become something. The central processing unit 2 includes an arithmetic unit 10 including a high-speed arithmetic element such as a microprocessor,
A storage unit 20 including a large-capacity hard disk device or the like is provided.

The storage unit 20 stores frame data storing means 21 storing data relating to frames of various building units provided in the unit-type building, and load data such as vertical load and horizontal load applied to the unit-type building. Load data storage means 22 provided. Here, various building units having different shapes are prepared. For example, a standard building unit having a cuboid frame in which the upper and lower ends of four corner columns are connected by beams, an entrance building unit in which the floor beams of the entrance are omitted from the cuboid frame, and a ceiling connecting the upper ends of the four corner columns A trapezoidal unit in which at least a part of the beam is inclined, a setback unit in which the outer wall part is retracted to the indoor side from the floor beam in plan view, a stair building unit with a stair room inside, A stairwell building unit for forming a stairwell provided at the same height level as the ceiling, a balcony unit protruding from the outer wall of the building, an elevator unit provided with an elevator shaft, and a garage provided inside A carport unit or the like in which a floor beam of a garage is omitted is prepared. For building units in which such various types are prepared, the frame data storage means 21 stores, for each of different types of building units,
The data on the form of the frame according to the shape of the building unit, the data on the frame material that will be the columns and beams forming the frame, the data on the floor material and ceiling material that can be installed in the building unit, etc. are accumulated. I have. The load data accumulating means 22 includes, in order to calculate the own weight data relating to the weight of the building unit itself to be analyzed, the vertical load data relating to the gravitational load applied to the floor of the building unit, and the data and the snow load applied to the unit type building. And snowfall amount data in which data on the snowfall amount in the area where the unit-type building is constructed is accumulated. put it here,
The load data storage unit 22 is a snowfall amount data storage unit.

The arithmetic unit 10 has various software installed therein, and has a multitasking function for simultaneously processing a plurality of installed software in parallel. The calculation unit 10 displays an input screen, which will be described later, to the operator, and automatically inputs an elevation grid based on data or the like input by the operator under the guidance of the manual input means 30 and guidance of the manual input means 30. The generated elevation grid generation means 11, the data retrieval means 12 for searching the storage unit 20 in response to a request from an operator or the like and extracting necessary data from the storage unit 20, and the elevation grid generation means 11 Elevated grid combining means 13 for combining an elongated grid in the long side direction and an elongated grid in the short side direction
The structure calculation means 14 for performing the structure calculation using the elevation grid formed by the elevation grid generation means 11 as a model is formed by the above-described software.

The manual input means 30 sequentially displays a plurality of types of input screens on the display 5 according to a predetermined procedure so that the operator can smoothly perform data input operations. As shown in FIG. 2, the manual input means 30 has a basic data input screen S100,
Basic information input means for displaying S101 on the display 5 and allowing the operator to input basic data of the unit type building
31 and a center selection means 32 for selecting a center as the elevation grid is set by the basic data input screen S100, and the positions of the horizontal grid and the vertical grid of the elevation grid,
For the elevation grid setting means 33 to be set according to the frame to be analyzed, and for the horizontal grid and the vertical grid of the elevation grid whose setting has been completed, input data of concrete frame members to be columns and beams. A member input unit 34, a rigid region setting unit 35 for setting a rigid region that does not bend in the horizontal direction to an elevation grid, and a fulcrum for setting a fulcrum that is an engagement point between the frame to be analyzed and the ground on the elevation grid Setting means
And load input means 37 for inputting data of the load applied to the frame to predetermined positions on the horizontal grid and the vertical grid.
And a check point setting means 38 for setting a point at which the amount of deflection should be checked on the elevation grid.

Returning to FIG. 1, the elevation grid generating means 11
Is for automatically generating an elevation grid based on the data inputted by the basic information input means 31, the passage selection means 32 and the elevation grid setting means 33. The data search means 12, when inputting the data of the framing material by the member input means 34, extracts the data of the framing material corresponding to the building unit to be analyzed from the frame data storage means 21 and extracts the extracted data. While automatically inputting data to the horizontal grid and the vertical grid, when inputting the data of the load applied to the frame by the load input unit 37, the load data corresponding to the frame is extracted from the load data storage unit 22, and the extracted data is extracted. Automatic input to the horizontal grid and the vertical grid. The elevation grid synthesizing means 13 synthesizes the elevation grids in the long side direction and the short side direction in which the input of the data to be set is completed, and converts the three-dimensional frame model from the elevation grid as a two-dimensional model. Is generated.

The structural calculation means 14 employs an elevation grid in which all input of data to be set has been completed as a two-dimensional model of a frame provided in a building unit, and performs a structural calculation thereof. The structure calculation means 14 calculates the horizontal rigidity, the allowable horizontal strength, the retained horizontal strength, the amount of deflection at the check point, and the like of the building unit to be analyzed. The structure calculating means 14 creates a bending moment diagram as a calculation result and causes the printer 6 to print the bending moment diagram. Further, the structure calculation means 14 has a function of performing structure calculation on a three-dimensional frame model generated by the elevation grid synthesis means 13 by synthesizing the elevation grids in the long side direction and the short side direction. I have.

Means 31 provided in manual input means 30
To 38 will be described with reference to input screens associated with each of these means 31 to 38. Display 5
As shown in FIG. 3, the basic data input screen S100 displayed on the screen includes a snow area selection area 100A and a grid setting area for selecting a grid where an elevation grid should be installed.
100B and 100C, a roof selection area 100D for setting whether or not the roof is a walking roof, and an icon 100E for shifting to the next basic data input screen S101 are provided. The snow area selection area 100A is provided with a selection field divided into five levels according to the amount of snowfall. In the street setting area 100B,
A selection field for installing an elevation grid at the center of the street along the long side of the building unit and a selection field for installing an elevation grid at the center of the street along the short side are provided. A selection box for installing an elevation grid on the outer street (outer street) along the outer wall of the unit building, and an elevation grid on the inner street (inner street) that crosses the inside of the unit building in plan view. Is provided. The roof selection area 100D is provided with a selection field for setting a walking roof and a selection field for setting a non-walking roof.

On the basic data input screen S101, as shown in FIG. 4, a floor number selection area 101A for selecting the number of floors of the unit type building and a type of building unit installed on each floor of the unit type building are selected. Building area selection area 101B, a cross-sectional dimension selection area 101C for selecting the cross-sectional dimensions of the frame members constituting the frame of the selected building unit, and a height dimension of the building units installed on each level. A height dimension selection area 101D and a floor material selection area 101E for selecting floor materials of building units installed on each level.
And a ceiling material selection area 101F for selecting a ceiling material of a building unit installed on each level, a long side dimension selection area 101G for selecting a long side dimension of the building unit, and a short side for selecting a short side dimension of the building unit. A side dimension selection area 101H, a roof selection area 101I for selecting a roof shape of the unit building, and an icon 101J for shifting to an elevation grid setting input screen S102, which is the next input screen, are provided.

The number-of-floors selection area 101A is provided with three selection columns for selecting one of a one-story, two-story and three-story building. Building unit selection area 101B
Is provided with an input field for inputting a symbol indicating a form of a frame provided in a building unit on each floor for each floor. The standard building unit, entrance building unit, trapezoidal unit, setback unit, stair building unit, stairwell building unit, balcony unit, elevator unit, and carport unit include:
Different symbols are assigned to each. By the way,
“A1” in the figure indicates a rectangular parallelepiped frame of the standard building unit.

In the cross-sectional dimension selection area 101C, there is provided an input field for inputting a symbol indicating a cross-sectional dimension of a frame member constituting a frame for each of a building unit installed on each floor and a roof unit forming a roof. There are four places. Height dimension selection area 101D, floor material selection area 101E
In the ceiling material selection area 101F, input fields for inputting numerical values and characters by keyboard input are provided for each floor.
By clicking on the triangular figure provided on the right side of these input fields, a plurality of selectable dimensions and member names are displayed, and an appropriate one can be selected from these. Long side dimension selection area 101G, short side dimension selection area 10
1H and the roof selection area 101I are provided with input fields for inputting numerical values and characters by keyboard input. By clicking on the triangular figure provided on the right side of these input fields, a plurality of selectable dimensions and roof type names are displayed, and an appropriate one can be selected from these. The input field of the roof selection area 101I is linked to the roof selection area 100D of the basic data input screen S100,
When a walking roof is selected in the roof selection area 100D, “land roof ALC walking” indicating a walkable flat roof is automatically selected in the input field of the roof selection area 101I.

Here, the basic information input means 31 displays a snow area selection area 100A of the basic data input screen S100, and allows the operator to select a snow area as an area where a unit building is to be built by this area 100A. At the same time, a building unit selection area 101B and a floor number selection area 101A of the basic data input screen S101 are displayed, and by these areas 101A and B, the number of floors of the unit type building and the frame of the building unit provided in each floor Is input. In addition, the bridge selection means 32 displays a bridge setting area 100B of the basic data input screen S100, and allows the operator to select a bridge on which an elevation grid is set by using this area 100B.

When the center is selected by the center selection means 32 to set the elevation grid, the elevation grid is virtually set along the selected center on the elevation grid setting input screen S102. It has become. As shown in FIG. 5, a horizontal grid setting area 102A for setting and inputting the coordinates of a horizontal grid extending in the X direction and a vertical grid extending in the Z direction are displayed on the elevation grid setting input screen S102. A vertical grid setting area 102B for setting and inputting the coordinates of the grid and a drawing area 102C for displaying the set elevation grid two-dimensionally are provided. Here, each of the horizontal grid and the vertical grid is arranged at a position corresponding to the frame to be analyzed,
It is set according to the frame.
Further, the elevation grid setting means 33 causes the positions of the horizontal grid and the vertical grid of the elevation grid to be set in accordance with the frame to be analyzed, and automatically displays the set elevation grid in the drawing area. It has become.

When a predetermined operation is performed in a state where the elevation grid is displayed in the drawing area 102C, a member input screen S103 for inputting data of a frame assembly to be a column or a beam of the frame is displayed. It has become. As shown in FIG. 6, the member input screen S103 includes a coordinate setting area 103A for setting and inputting a start point, which is the position of one end of the shaft assembly to be input, and an end point, which is the position of the other end of the shaft assembly. A joining setting area 103B to 103D for setting a joining method with other frame members at the start point and the end point, a type setting area 103E for setting a type of the frame member, and data on mechanical characteristics of the frame member. Are provided, and a cross-section input area 103I for inputting data relating to the cross-sectional shape and dimensions of the framing member is provided.

Here, the member input means 34 receives standard standard data on the frame assembly and the joint structure of the frame provided in the building unit, which are input on the basic data input screen S101.
Extracted from the frame data storage means 21, the area 103B ~
It is to be input to 103I. In addition, area 103B ~
If the data to be input to 103I is different from the standard data, appropriate data can be manually input. For example, when a building unit in which a portion is omitted between X1 and X2 of the floor beam is installed on the first floor, "space" can be input for the coordinates of the portion. . In the case where studs are provided at X1 and X2, a frame member serving as a pillar can be set at the corresponding portion. The joint setting areas 103B to 103D include a torque required to deform the joint once, an external force for deforming the joint by 1 cm in the axial direction, and a force of 1 cm in the shearing direction when the joint structure of the frame assembly is other than the rigid joint. Is input, whereby the characteristics of the joint portion of the frame member are set. As described above, the standard data is automatically input to the cross-section input area 103I by the member input means 34, and when the data to be input is different from the standard data, appropriate data can be manually input. In addition to the above, when a triangular figure provided on the right side of the input box is clicked, a plurality of selectable dimensions and member names are displayed, and an appropriate one can be selected from these. And the characteristic input area 103F ~
103H has a section input area 103I
Is automatically input. When the data input of the frame material whose coordinates are input to the coordinate setting area 103A is completed and the "OK" icon 103K provided below is clicked, the input frame material data is displayed in the list display area 103J. It has become so. In order to correct the input data,
An “Cancel” icon 103L is provided.

When all the data of the frame members constituting the frame are input on the member input screen S103, as shown in FIG. 7, all the input data of the frame members are displayed in the list display area 103J. In the drawing area 102C, an elevation model of the frame is automatically generated. Here, the part where the two building units stacked vertically overlap each other is a state where the ceiling beam of the building unit on the lower floor and the floor beam of the building unit on the upper floor are bundled, and the horizontal load is reduced. Even if it receives, since it becomes a part with very little deflection in the direction, when inputting the member on the member input screen S103, the building units on the upper and lower floors are connected to the corners and the brace-like dummy members intersecting each other Is input as shown in the columns 103M and 103N of the list display area 103J. As a result, a rigid region that does not bend in the horizontal direction is set between the upper and lower building units. Here, the rigid body area setting means 35 sets a rigid body area which does not bend in the horizontal direction as an elevation grid by inputting a brace-shaped dummy member on the member input screen S103.

If the member data displayed in the list display area 103J is appropriate, clicking on an "OK" icon (not shown) displays a belonging floor input screen S104. The belonging floor input screen S104 is, as shown in FIG. 8, a screen almost similar to the member input screen S103,
"1st floor", "2nd floor" and "3rd floor" icons 104A-104C
Is added. By specifying the selection range 104D with the mouse on the list display area 103J of the belonging floor input screen S104 and clicking the "first floor" icon 104A, the members of the selection range can be made to belong to the first floor. Has become. Similarly, for the second floor and the third floor, the member belonging floor can be set by specifying a selection range in the list display area 103J.

When the setting of the member's belonging floor is completed, and an "OK" icon (not shown) is clicked, a fulcrum setting screen is displayed.
S105 is displayed. Support point setting screen S105
As shown in FIG. 9, a setting area 105A for setting a position coordinate and a joining state of a joining point between a building unit on the first floor and a foundation is provided as a fulcrum serving as an engaging point with the ground. The "pin" in the setting area 105A of FIG.
The term `` roller '' refers to a joint state in which anchor bolts extending downward from the lower ends of columns of building units are fixed with mortar filled in a sheath tube embedded in the foundation, and `` rollers '' are height adjustment bolts embedded in the foundation. Above, the state where the frame of the building unit is simply placed. Here, the fulcrum setting means 36 sets, by the fulcrum setting screen S105, a joint between the frame and the foundation, which is a fulcrum that is an engagement point between the frame to be analyzed and the ground, on the elevation grid. I have.

When the setting of the member's belonging floor is completed and the "OK" icon (not shown) is clicked, a load input screen is displayed.
S106 is displayed. Load input screen S106
As shown in FIG. 10, a fixed load icon 106A for starting input of a fixed load, which is a load composed of the weight of the building unit itself, and a loaded load, which is a vertical load of a heavy object loaded on the floor, A load icon 106B for starting input of a vertical load due to snow, a snow load icon 106C for starting input of a vertical load due to snow, and a horizontal force icon 106D for starting input of horizontal force due to an earthquake or the like. ing.

When the fixed load icon 106A is clicked,
The fixed load input area 106E is displayed. In the fixed load input area 106E, a coordinate setting area 106F for inputting a start point and an end point of the frame member to which a fixed load is applied.
And a load distribution setting area 106G for selecting the distribution of the fixed load applied to the frame member, and a load data input area 106H for inputting data on the fixed load applied to the frame member.
Are provided. The load distribution setting area 106G includes selection fields 206 to 208 that are selected when directly inputting with a keyboard or the like.
And the distribution pattern of the fixed load is stored in advance
Selection field 20 that is stored in 22 and is selected when selecting from among them
9 to 211 are provided. Then, selection fields 206, 209
Is selected when the fixed load is evenly distributed,
The selection columns 207 and 210 are selected when the fixed loads are concentrated, and the selection columns 209 and 211 are selected when the fixed loads are irregularly distributed. When the selection fields 209 to 211 are selected in the load distribution setting area 106G, a load type selection area 106I for selecting a load type is displayed.

The load type selection area 106I is provided with a selection column for selecting one of a floor, a ceiling, and a roof. When one of these selection fields is selected, the load data stored in the load data storage means 22 and based on the load data relating to the typical load applied to the floor, ceiling and roof, The calculation is automatically performed, and the result is displayed in the calculation result display area 106K. In this state, when the "OK" icon 106L is clicked, the calculated load data is automatically input to the load data input area 106H.
When the input in the fixed load input area 106E is completed, “O
Clicking on the “K” icon 106M allows the input of fixed load data for the next member. And
When the input of the fixed load data is completed for all members, as shown in FIG. 11, the data of the fixed load applied to each member is displayed in the list display area 212, and when the displayed load data is appropriate, , Loading load icon 10
6B, the snow load icon 106C or the horizontal force icon 106D can be clicked to input the load, snow load or horizontal force. It should be noted that the input of the load load and the snow load data can be performed in the same manner as the input of the fixed load. On the other hand, when the horizontal force icon 106D is clicked, a horizontal force input area 106N is displayed on the load input screen S106 as shown in FIG.
The horizontal force input area 106N includes an area 213 where coordinates of the position of a node in deflection due to horizontal force are input and an area where data such as the magnitude of the horizontal force applied to the node is input.
214. These data are
The data can be selected from the data stored in the load data storage means 22. Here, the load input means
Reference numeral 37 denotes a screen for inputting data on the load applied to the frame to predetermined positions on the horizontal grid and the vertical grid on the load input screen S106.

When all of the above load data have been input,
Clicking the “OK” icon (not shown) displays a checkpoint setting screen S107 for setting a point for checking the amount of bending. As shown in FIG. 13, the check point setting screen S107 is provided with point setting areas 107A to 107C for setting the coordinates of the bending amount node, the member left node, and the member right node, respectively. Here, the check point setting means 38 sets a node to be checked for the amount of deflection on the elevation grid by using the check point setting screen S107.

When the setting of all the deflection check points is completed and an “OK” icon (not shown) is clicked, a calculation start screen for starting a calculation for structural analysis is displayed.
S108 is displayed. Calculation start screen S108
As shown in FIG. 14, the above screens S101 to S107
A selection field 108A for performing a structural analysis with a two-dimensional model of the frame set in the above, and a two-dimensional model set in the screens S101 to S107 are combined to generate a three-dimensional model, and the three-dimensional model A selection field 108B for performing analysis is provided.

Select the selection field 108A and click the "execute" icon.
Clicking on 108C starts the structural calculation in the two-dimensional model. Here, when the elevation grid is set along the long side direction of the building unit on the screens S101 to S107, a result screen S109 showing the calculation result is displayed. As a result screen S109, as shown in FIG. 15A, an area 109A showing a two-dimensional model along the long side direction is displayed.
Area 109B indicating the horizontal stiffness K1, the allowable horizontal strength Fa1, and the retained horizontal strength Fu1 on the first floor, and the area 10 indicating the horizontal stiffness K2, the allowable horizontal strength Fa2, and the retained horizontal strength Fu2 on the second floor.
9C and an area 109D indicating the horizontal rigidity K3 of the third floor, the allowable horizontal strength Fa3, and the retained horizontal strength Fu3 are provided. On the other hand, when the elevation grid is set along the short side direction of the building unit on the screens S101 to S107, the screen S110 is displayed as a result screen showing the calculation results. As a result screen S110, as shown in FIG. 15B, an area 110A showing a two-dimensional model along the short side direction, a horizontal rigidity K1 on the first floor,
Area indicating allowable horizontal strength Fa1 and retained horizontal strength Fu1
110B, the area 110C showing the horizontal rigidity K2 of the second floor, the allowable horizontal strength Fa2 and the retained horizontal strength Fu2, and the horizontal rigidity K of the third floor
3. An area 110D indicating an allowable horizontal strength Fa3 and a retained horizontal strength Fu3 is provided.

Select the selection field 108B and click the "execute" icon.
Clicking on 108C, the elevation grid synthesis means 13 (Fig. 1
Reference) is started. The elevation grid combining means 13 combines the two-dimensional model along the long side direction and the two-dimensional model along the short side direction to generate a three-dimensional model of the frame of the building unit. Then, when synthesizing the two two-dimensional models, the elevation grid synthesizing means 13 includes a two-dimensional model along the long side direction,
Intersection grid setting screen S1 for setting a vertical grid that is an intersection line that intersects with the two-dimensional model along the short side direction
11 is to be displayed. Intersection grid setting screen
S111 includes an area 111A for displaying the elevation grid and the two-dimensional model along the long side direction, and an area 111B for displaying the elevation grid and the two-dimensional model along the short side direction,
By selecting the vertical grid shown in the area 111A and the vertical grid shown in the area 111B with a mouse, a vertical grid that is an intersection of two two-dimensional models that intersects each other is selected. When a vertical grid, which is an intersection line intersecting with each other of the two-dimensional model, is selected, the X coordinate of the elevation grid along the short side direction is calculated as shown in FIG.
As shown in (3), the frame is replaced with the Y coordinate as it is, and a three-dimensional model of the frame is generated. The structure calculation means 14 performs a structure calculation based on the three-dimensional model 111C of the frame generated by the vertical grid synthesis means 13.

According to the above-described embodiment, the following effects can be obtained. That is, an elevation grid is set along the beams of the frame of the building unit constituting the unit-type building, and the structural calculation is performed for each rectangular frame-shaped surface formed by the columns and beams included in the elevation grid. Therefore, the number of data required for the structural calculation can be significantly reduced as compared with forming a three-dimensional model by performing a two-dimensional model for performing the structural calculation. Moreover, in the unit-type building, since the same structure is horizontally arranged in plural at predetermined intervals, data input for the same structure does not need to be performed twice. The input operation only needs to be performed for different structures along each of the short side directions, and from this point, the number of data required for the structural calculation can be greatly reduced. In addition, when setting the position of the member data, the elevation grid indicates the position where the member can be set, and serves as a guide for setting the member position, so that the input operation of the member data can be easily performed. Thus, the data input operation can be reduced, and the data input operation can be performed easily and quickly.

In setting the elevation grid,
One of an outer street along the outer wall surface of the unit building and an inner street passing through the inside of the unit building in plan view, and a center along the long side of the building unit. , And a grid selection means 32 for selecting one of the grids along the short side, and the elevation grid setting means 33 sets the elevation grid 33 along the grid selected by the grid selection means 32. Is set, the plane position between the construction surface and the elevation grid coincides, and the gravitational load and the horizontal load applied to the construction surface can be directly input as data. And since the way the load is applied is different between the surface arranged at the outer core along the outer wall surface of the unit building and the inner surface crossing the inside, Since it is made to input which of the elevation grid along the street and the inner street, it is possible to automatically calculate the load applied to the surface set on the elevation grid, Time and effort for inputting a load can be saved. Similarly, between the long side and the short side of the building unit, the distance between the columns arranged along the street is different, and the way of applying the load is different, so the elevation grid along either the long side or the short side Since the presence or absence is input, it is possible to automatically calculate the load applied to the construction surface set in the elevation grid, and it is possible to save the trouble of inputting the load.

Further, fulcrum setting means 36 for setting a fulcrum, which is a point where the first-floor building unit and the foundation are engaged with each other, on a coordinate axis extending in the horizontal direction of the elevation grid is provided. Can be reflected on the modeled surface on the elevation grid, and some floor beams are omitted and studs are provided, such as entrance building units and carport building units. When analyzing the structure of a building unit, a new fulcrum can be set by omitting floor beams and providing studs, which includes entrance building units and carport building units. Even so, structural analysis can be performed with high accuracy.

Further, a rigid region setting means 35 for setting a rigid region in which horizontal bending does not occur is provided at a portion of the elevation grid corresponding to the position where the two building units stacked vertically are overlapped. It is possible to set a part where two building units stacked one above the other are superimposed and have a very small amount of deflection in the direction even if a horizontal load is applied. And the structural analysis can be performed with high accuracy.

Further, basic information input means 31 for inputting an area where the unit-type building is to be built, the number of floors of the unit-type building, and the form of the frame of the building unit provided in each floor are provided. Since the average amount of snowfall in the area where the unit building is built can be grasped, the snowfall load due to the weight of snow on the roof etc. of the unit building can be automatically calculated from this average snowfall, High-precision structural analysis can be performed in consideration of the influence. Also, if the level of the unit-type building and the form of the frame of the building unit provided in each level are input, the weight of each level of the unit-type building itself can be obtained from the data on the members of the columns and beams constituting the frame. Since the calculation can be automatically performed, there is no need to input the weight of each building unit constituting the unit-type building, and the input operation can be easily performed.

The present invention is not limited to the above-described embodiment, but includes the following modifications. That is, the elevation grid synthesizing means may be omitted from the structure calculation device, and the structure calculation may be performed using only the two-dimensional model. In addition, as the core selection means, in the area set on the basic data input screen,
Not limited to manual selection, a floor plan of a unit-type building may be read by an image scanner and a street may be automatically set. Further, the analysis results are not limited to numerical values of the horizontal rigidity, the allowable horizontal strength and the retained horizontal strength, but may be represented by a bending moment diagram indicating the direction and magnitude of the external force applied to the building unit.

[0040]

According to the first aspect of the present invention, an elevation grid is set along beams of a frame of a building unit constituting a unit type building, and columns and columns included in the elevation grid are set. Structural calculations are performed for each rectangular frame-shaped structure formed by the beams, so the model for performing the structural calculations is two-dimensional, and compared to forming a three-dimensional model,
The number of required data can be greatly reduced. Moreover, in the unit-type building, since the same structure is horizontally arranged in plural at predetermined intervals, data input for the same structure does not need to be performed twice. Since the input operation can be performed only for different structures along each of the short side directions, the labor of input can be reduced from this point as well. In addition, when setting the position of the member data,
The elevation grid indicates the position where the member can be set, and serves as a guide for setting the position of the member, so that the input operation of the member data can be easily performed. Thus, the data input operation can be reduced, and the data input operation can be performed easily and quickly.

According to the second aspect of the present invention,
In a unit-type building, a rectangular frame-shaped surface composed of columns and beams is placed on the center of the street. Thus, the gravitational load and the horizontal load applied to the structure can be directly input as data. In addition, the way the load is applied is different between the surface located at the outer core along the outer wall of the unit building and the inner surface located across the inside, so the outer By inputting whether the elevation grid is along the street or the inner street, it is possible to automatically calculate the load applied to the surface set on the elevation grid, You can save time and effort. Similarly, between the long side and the short side of the building unit, the distance between the columns arranged along the street is different, and the way of applying the load is different, so the elevation grid along either the long side or the short side By inputting whether or not there is, it is possible to automatically calculate the load applied to the construction surface set on the elevation grid, and from this point, it is possible to save the trouble of inputting the load.

According to the third aspect of the present invention,
The junction points of the upper and lower building units can be reflected on the modeled surface in the elevation grid, and some of the floor beams are omitted, such as entrance building units and carport building units. In addition, when performing structural analysis of a building unit with studs, a newly generated fulcrum can be set by omitting floor beams and studs, including entrance building units and carport building units Even if it is, the structural solution can be performed with high accuracy.

According to the invention described in claim 4 of the present invention,
By setting a rigid region in the part corresponding to the position where the two building units overlap, the part where the ceiling beams and floor beams are bundled can be reproduced in a two-dimensional model, and structural analysis can be performed with high accuracy Can be.

According to the fifth aspect of the present invention,
The average snowfall in the area can be ascertained, and the snowfall load due to the weight of snow on the roof of the unit building can be automatically calculated from this average snowfall. Structural analysis can be performed. Also, if the level of the unit-type building and the form of the frame of the building unit provided in each level are input, the weight of each level of the unit-type building itself can be obtained from the data on the members of the columns and beams constituting the frame. Since the calculation can be automatically performed, there is no need to input the weight of each building unit constituting the unit-type building, and the input operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an entire embodiment of the present invention.

FIG. 2 is a block diagram showing manual input means according to the embodiment;

FIG. 3 is a diagram showing a basic data input screen according to the embodiment.

FIG. 4 is a diagram showing another basic data input screen according to the embodiment.

FIG. 5 is a diagram showing an elevation grid setting input screen according to the embodiment.

FIG. 6 is a diagram showing a member input screen according to the embodiment.

FIG. 7 is a view showing a different state of the member input screen of FIG. 6;

FIG. 8 is a view showing a belonging floor input screen according to the embodiment.

FIG. 9 is a diagram showing a fulcrum setting screen according to the embodiment.

FIG. 10 is a diagram showing a load input screen according to the embodiment.

11 is a diagram showing a different state of the load input screen of FIG.

FIG. 12 is a diagram showing still another state of the load input screen of FIG. 10;

FIG. 13 is a view showing a checkpoint setting screen according to the embodiment.

FIG. 14 is a diagram showing a calculation start screen according to the embodiment.

FIG. 15 is a diagram showing a result screen according to the embodiment.

FIG. 16 is a diagram showing an intersection grid setting screen in the embodiment.

FIG. 17 is a diagram showing a three-dimensional model according to the embodiment.

FIG. 18 is a bending moment diagram showing an analysis result according to a modification of the present invention.

[Explanation of symbols]

 1 Structure calculation device 31 Basic information input means 32 Street core selection means 33 Elevation grid setting means 34 Member input means 35 Rigid body area setting means 36 Support point setting means

Claims (5)

[Claims] A three-dimensional frame in which the upper and lower ends of a plurality of pillars are connected by beams, and a plurality of building units each having a rectangular shape having a long side and a short side having different lengths are combined. An elevation grid setting means for virtually setting a lattice elevation grid along a longitudinal direction of the beam of the building unit forming the unit type building, wherein A member input means for inputting a member to be one of the pillar and the beam along the elevation grid, and inputting a joining state of the members; Computing device. 2. The unit calculation system according to claim 1, wherein the elevation grid is set on a horizontal center of the unit building that extends in a horizontal direction, and the elevation grid is provided. In setting, one of the outer street along the outer wall surface of the unit building and the inner street crossing the inside of the unit building in plan view is selected, and the length of the building unit is selected. A center of gravity selection means is provided for selecting either one of the center of gravity along the side and the center of gravity along the short side, and the elevation grid setting means includes: A unit-type building structure calculation apparatus, wherein an elevation grid is set along the unit. 3. The unit calculation system according to claim 1, wherein the fulcrum, which is the point where the first-floor building unit and the foundation are engaged with each other, is set in the horizontal direction of the elevation grid. A structural calculation apparatus for a unit-type building, wherein fulcrum setting means for setting on a coordinate axis extending is provided. 4. The unit-type building structural calculation apparatus according to claim 1, wherein the vertical grid corresponds to a position where two vertically stacked building units are overlapped. A structural calculation apparatus for a unit-type building, wherein a rigid body area setting means for setting a rigid body area in which horizontal bending does not occur is provided in a portion. 5. The unit calculation system according to claim 1, wherein the unit building is constructed, an area where the unit building is built, the number of floors of the unit building, and each floor. And a basic information input means for inputting a form of a frame of a building unit provided in the building.