(application guide)
A6.1 Installation
The install file of the ConSteel design software can be downloaded from the www.consteel.hu portal. The software shouldbe be installed on the User’s computer. First the
ConSteel_install_”dátum”.exe file should be executed when the ConSteelKey0.bin file will be created by the software. This file and the required data should be sent to the ConSteel Software Company ([email protected]). In some days the Company will send back the
ConSteelKey.bin software key which can be added to the main folder of the software.
A6.2 Starting
The program can start by the ConSteel.exe. On the ConSteel Startup panel the ‘Create new model’ option may be selected, and then the Model name (1) can be defined, see Figure A6.1.
Fig. A6.1 Create new model
Using OK the 3D model window will appear. The short description of the main modeling tools can be available by F1.
A6.3 Setting 3D modeling window
First dimensions of the modeling raster may be defined (2). For example, at 19,5 meters span 20000 may be written into the Size box (3), see Figure A6.2.
Fig.A6.2 Setting modeling raster
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To actualize the setting Enter should be used (or the panel should be closed). By this way the size of raster will be 20 meters (while the density will remain 1000 mm and the step 250 mm).
A6.4 Setting initial cross-sections
The Section table of the new model is empty, therefore the first step is to define the initial cross-sections. First the Structural members label (4) should be selected, secondly the Section administration tool (5). In case of hot-rolled cross-section „From Library” option (6), in case of welded cross-sections „Macro section” option (7) should be used, see Figure A6.3.
Fig.A6.3 Selecting cross-section category
After selecting cross-section category the appropriate parameter panel will appear where the type of cross-section (8) should be defined (actually it is „Welded I”). Clicking on Next the parameter table appears where the geometrical parameters of the cross-section should be defined (9), see Figure A6.4.
Fig.A6.4 Setting type and geometrical parameters for cross-section
„Name”(10) and „Material” (11) of the cross-section may be defined on the top part of the panel. Using Create the cross-section will be placed into the Section table of the actual model, see Figure A6.5.
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Fig.A6.5 Section table with actually defined cross-sections
All the cross-sectional properties may be available if the cross-section is selected in the Section table (12) and the Properties… is used, see Figure A6.6. The program uses two different cross-sectional models in the same time. The General Solid Section model (13) supplies only elastic properties, while the Elastic Plate Segment model (14) supplies plastic properties as well.
Fig.A6.6 Cross-sectional properties
A6.5 Create columns
The first step of the structural modeling is the ‘erection’ of the two columns. Selecting the Structural member label (15) and the Column tool (16) the column definition panel will appear, where the height (17) and the cross-section (18) of the column should be determined (normally the default values of the other parameters are adequate). The columns may be placed in the global X-Z plane with the base points, see Figure A6.7. The position of a column can be defined by coordinates also. For this the column should be positioned such a way that Y=Z=0, and then the X button should be pushed, and the actual X coordinate should be written into the data box which can be found below the modeling window (19), see Figure A6.8. The action is closed by Enter, and the column will appear in the graphics. The form and the view of the visualization can be changed by the tools (20) found at left hand side of the window, see Figure A6.9.
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Fig.A6.7 Erecting columns
M6.8 ábra: Column position defined by coordinates
Fig.A6.9 Change visualization A6.6 Create beam
The next step of the modeling is the ’erection’ of the beam. Selecting the Structural member label and the Beam tool (21) the panel of beam definition will appear, where the cross-section (22) should be selected (normally the default values of the other parameters are adequate).
Using the left hand side mouse button the beginning and the end of the beam should be defined (in the example these points are the tops of the columns), see Figure A6.10. In order
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to get the symmetric duopitch roof the beam should be refracted at middle. For this the raster may be moved into the plane of the frame (23 , 24), see Figure A6.11, and then shifting to the Geometry label (25) and using the Refract selecting line element tool (26) the middle (ridge) point may be moved into the right position. The Z coordinate of the ridge point can be defined also in the control row (27) which is found below the modeling window, see Figure A6.12.
Fig.A6.10 Erecting beam
Fig.A6.11 Shift the raster into the plane of the frame 22
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Fig. A6.12 Refract the beam
After modeling the columns and the beam it is suggested shifting the raster into the original position (28) and saving the model (29) with version number _01, see Figure A6.13.
Fig.A6.13 Shift the raster into original position and save the model
A6.7 Create haunch
Selecting the Structural member label and the Haunch tool (30) the haunch panel will appear, where the geometrical parameters should be defined. Following the tips of the program the beginning point (31) and the direction (32) of the haunch should be defined on
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the actual structural member (for example on the beam). The direction can be defined by any get point on the member, see Figure A6.14. New haunch can be created by new definition of beginning point and direction.
Fig.A6.14 Create haunch
M6.8 Create point support
First the support model of the column bases is defined. According to the preliminary draw the column bases are rigid. Selecting the Structural member label and the Point support tool (33) the point support panel will appear, where the ‘Fix’ option should be selected (34). If the column base is pinned, the option should be ‘x,y,z,zz’. Following the tips of the panel the base points of the model should be selected by the mouse (35), see Figure A6.15.
Fig.A6.15 Create fix (pinned) column base supporting model 30
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In the next step the intermediate supports in global direction Y are created. These supports are placed at the purlins and wall beams or at the bracing bars. These places are determined in the preliminary draw. Point support may be set at any get point which is defined on the structural member. There are two ways to define get points:
• Dividing member into number n uniform parts.
• Dividing member into parts with d uniform length.
The required option can be selected in the function row found below the model window, see Figure A6.16. The option can be changed by a click on the actual option sign. The new set of these options (‘d’ or ‘n’) can be fixed by Enter.
Fig.A6.16 Create get points on member (n: number of parts; d: relative distance in [mm])
Using setting above the get points with red color will appear on the structural member when the cursor is moved close to one of the ends of it. On the point support panel the ‘y’ option (support in global direction Y) should be selected. The support model can be placed at the get points by a click on it. In the case of the example n=2 get point system was used. The lateral supports were placed into the breakpoints and into the middspan points of the members, see Figure A6.17. This support model approximates the real construction which is established in the preliminary draw.
Fig.A6.17 Structural model with lateral point supports (at middspan with knee bar effect, see Section A6.9)
A6.9 Create lateral support with knee bar effect
The critical load amplifier (see Section 7.3.2) may be increased by knee bars which can be used along the structural members. In the example this type of support is used at middspan points of the beams. Selecting the Structural member label and the Point support tool the point support panel will appear, where the ‘New support” button should be used (36). By this operation the Definition point support panel will appear, where the New button should be used. After this the automatically generated ‘Name of support model’ may be changed (37) and the ‘y’ and ‘Rx’ degrees of freedoms should be switched as ‘Fix’ and the others as ‘Free’
(38). This means that the point will be supported in direction y and in rotation about x axis of the local system of the structural member, see Figure A6.18. Using the Apply button the support model will be created and it can be placed on the points of the structural members.
Before placing the support the coordinate system should be shifted from ‘global’ to ‘local’
(39), see Figure A6.19. It is noted that the transversal pin of the support symbol should be perpendicular to the axis of the structural member (40).
Fig.A6.18 Create lateral point support with knee bar effect
Fig.A6.19 Place lateral support with knee bar effect 36
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Annex 7
External pressure coefficient for cross wind effect (h/d<0,25; α =5
0; A>10m
2)
Case 1
Case 2
Case 3
Case 4
Megjegyzés: A fenti értékeket a (c⋅qp) –vel megszorozva megkapjuk a szélhatásból származó vonal menti megoszló terheket.
cpe,10=+0,8 cpe,10=-0,3
cpe,10=-1,7;-1,2 cpe,10=-0,6 cpe,10=+0,2
cpe,10=-0,6
cpe,10=+0,8 cpe,10=-0,3
cpe,10=-1,7;-1,2 cpe,10=-0,6 cpe,10=-0,6
cpe,10=-0,6
cpe,10=+0,8 cpe,10=-0,3
cpe,10=-0,6 cpe,10=-0,6
cpe,10=+0,8 cpe,10=-0,3
cpe,10=+0,2
cpe,10=-0,6
Annex 8
(a) Internal pressure coefficient for cross wind effect (h/d<0,25 ; α =5
0; A>10m
2)
(b) External pressure coefficient for longitudinal wind effect (h/d<0,25 ; α =5
0; A>10m
2)
(c) Internal pressure coefficient for longitudinal wind effect (h/d<0,25 ; α =5
0; A>10m
2)
Notes: Coefficients given above times (c⋅qp) provide the wind loads distributed on the structural members of the frame.
+cpi,0
+cpi
cpe,10,B=-0,8 cpe,10,B=-0,8
cpe,10,H=-0,7 cpe,10,H=-0,7
+cpi,90