8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis http://slidepdf.com/reader/full/creating-a-structural-model-in-autocad-robot-structural-analysis 1/30 Create the Structural Axis and Stories Learn how to create a structural axis as the basis for the column grid and how to add stories for the levels of the building. 1. Start a new project using the Building Design Template. 2. Click Tools > (Preferences…). 3. In the Preferences dialog, in the Languages area, set the Regional settings to Eurocode, as shown below. 4. Click Tools > Job Preferences, and then select Metric as the default units system. 5. In the Menu Bar, select Geometry > (Axis Definition…). 6. In the Structural Axis dialog box, on the X tab, set the Position to 0, No. of repet. to 8, Distance to 6 (m) and Numbering to A B C… and then click Add. On the Y tab, set the Position to 0, No. of repet . to 5, Distance to 6, and Numbering to 1 2 3… as shown below.
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Creating a Structural Model in Autocad Robot Structural Analysis
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8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
Learn how to create a structural axis as the basis for the column grid and how to add stories for the levelsof the building.
1. Start a new project using the Building Design Template.
2. Click Tools > (Preferences…).
3. In the Preferences dialog, in the Languages area, set the Regional settings to Eurocode, as shownbelow.
4. Click Tools > Job Preferences, and then select Metric as the default units system.
5. In the Menu Bar, select Geometry > (Axis Definition…).
6. In the Structural Axis dialog box, on the X tab, set the Position to 0, No. of repet. to 8, Distance to 6 (m) and Numbering to A B C… and then click Add. On the Y tab, setthe Position to 0, No. of repet . to 5, Distance to 6, and Numbering to 1 2 3… as shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
5. You can continue clicking on the intersections at which you want to add columns or copy the firstcolumn to additional places.
6. To copy the column, select the first column and in the Menu Bar, click Edit > Edit > (Move/Copy…).
Note: You can also access the edit commands using a toolbar. On the Standard toolbar,
click (Edit) to open the Edit toolbar. In the Edit toolbar, click (Move/Copy).
7. In the Translation dialog box, set the Edit mode to Copy and type the Number of repetitions that youwant to make, in this case 8.
8. Place the cursor in the Translation vector box, click the intersection A6 to indicate the origin of thevector, and then click the intersection B6 to indicate the direction of the vector.
Note: Alternatively, enter the following coordinates in the Translation vector box: 6.00, 0.00, 0.00.
9. To copy the group of columns to the rest of the locations, right-click and select Select and then selectall of the copies that you just created.
10.Set the Number of repetitions to 5 and pick two points going down.
11. The columns are placed as shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
10. In the Selection toolbar, click (Bar Selection).
Note: The Selection toolbar (shown below) is typically docked directly below the Standard toolbar.Some tools are only available when elements are selected.
11. In the Selection dialog box, expand the Bar drop-down list and select Panel. Then select None. Thisremoves all of the panels (walls) from the selection set without removing the columns as shownbelow.
12. Close the dialog box and press <Delete>.
13. In the Deleting a structure fragment dialog box, select No, delete only the selected bars (you do notwant to delete the connecting beams) and then click Apply.
14. Save the project.
Create a floor and floor opening
Learn how to add a floor and then how to add openings in the floor.
1. Return to the plan view.
2. In the Menu Bar, click Geometry > (Floors) or in the Structural Design toolbar,
click (Floors).
3. In the Floor dialog box, set the Thickness to TH12_CONCR and select Rectangle.
4. Select the points for the rectangle as shown below and close the dialog box.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
Learn how to select elements using the Object Inspector and other methods and how to change the topstructural columns to steel.
1. In the Object Inspector, double-click on Story 5. The view changes to only display the elements of Story 5 as shown below.
Note: You can select the story in which you want to work using the Object Inspector or from theStories toolbar, or the pop-up list at the bottom of the screen as shown below. If you test this, ensurethat you go back to Story 5 before continuing with the steps.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
7. Another way to select elements is by doing so in a view. In the Standard toolbar, click (View) toopen the View toolbar as shown below.
Note: Many of these options are only available in a 3D view.
8. In the View toolbar, click (3D Projection onto ZX).
Note:
• By clicking (3D Projection onto ZX) rather than (Projection ZX), all of the elements inthe view are available for selection, not just the one closest to the plane.
• Leave the View toolbar displayed if you want to switch between other views than 3D and Plan on aregular basis.
9. Select all of the columns in Story 5 by drawing a crossing window as shown below.
10. In the View toolbar, click (3D Projection XYZ) to return to the 3D view. The Story 5 columns andthe walls are selected.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
11. To clear the Walls without dropping the columns, in the Object Inspector, expand Story 5 to displaythe types of elements that have been used and selected as shown below.
12. Hold down <Ctrl> and click Walls to clear the wall selection.
13. In the Layout drop-down menu, select Properties.
Note: Layouts setup the most useful toolbars and tables for a specific function.
14. In the Structure Definition toolbar that displays, click (Bar Sections).
15. In the Sections dialog box, select IPE 270 as shown below and click Apply.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
Note: If the IPE 270 section does not display, in the Sections dialog box, click (New Section). Inthe New Section dialog box, on the Standard tab, set the Family to IPE and the Section to IPE 270.
Add IPE 330 if needed. Close the dialog box.
16. Close the dialog box.
17. Switch to the 3D view and zoom in to note how the columns have changed as shown below.
18. Save the project.
Add Beams
Learn how to add and copy beams for the roof of the building.
1. Pan until the beams that were copied to Story 5 are displayed. Select and delete them.
2. Change the Layout to Geometry.
3. In the Structural Design toolbar, click (Beam).
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
4. In the Beam dialog box, set the Section type to Steel beam and the Section to IPE 270.
5. Zoom out and draw 2 beams as shown below.
6. Switch to the Plan view.
7. Select the long beam and copy it to the other grids. Repeat the process with the shorter beam. Thefinal building should look similar to the one shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
Learn how to modify the display to show the stories by color and how to create a new analysis type for linear static analysis.
1. Navigate to the Tutorials folder, and then open the project Structure-Seismic.rtd. This is similar tothe project you worked on in the previous tutorial, but additional loads have already been added.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. To help display the modifications to the various stories of the structure, right-click and select Display.
3. In the Display dialog box, select Mark with colors and then select Stories – legend by colors andclick OK. Each of the stories displays a different color as shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
4. In the Standard toolbar, click (Analysis Parameters). A variety of loads have already beenapplied to this model as shown below. You will now add a linear elastic static analysis type.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
Note: Depending on the directions and eccentricities definitions, the series of static seismic loadcases are generated. XY components of direction vectors are understood as additional multipliers for the calculated horizontal forces in each direction.
8. Continuing to work in the Seismic Analysis dialog box, click Directions and Combinations. For thisproject, set the Newmark combination to Group 1 and Group2 as shown below and click OK.
9. In the Seismic Analysis dialog box, click Range of Seismic Load.
10. In this dialog box, you can limit the levels on which the seismic load is distributed and define thestructure height for the fundamental period calculation. The top and bottom stories can be definedautomatically or manually. In this case we are leaving the stories set to Automatic. Click OK to closethe dialog box.
11. In the Seismic Analysis dialog box, in the Method of defining values of fundamental periods area,select Precise (modal analysis) as shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
Note: The fundamental period methods include Approximate (where values are calculated
according to formulas defined by code),User-defined (where values are added manually by theuser), and Precise (which generates an additional modal case preceding seismic cases).
12.Click Modal Analysis Parameters so that you can review the settings in the Modal AnalysisParameters dialog box and click Cancel.
13. In the Seismic Analysis dialog box, select the Approximate (seismic code) method andclick Seismic Analysis Parameters.
Note: Parameters of the seismic simplified analysis depend on the seismic code.
14. In the Parameters dialog box, next to Direction X , expand the drop-down list, and select RC frame.Repeat this for Direction Y as shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
15.Click OK to close the Parameter and Seismic Analysis dialog boxes to finish the creation of the newSeismic loads.
16. In the Analysis Type dialog box, the two Load cases for the X and Y directions and the four combinations generated from them are displayed as shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
4. To display the loads more clearly, in the View Status Bar, turn off (Section Shapes).
5. Right-click and select Display.
6. In the Display dialog box, select Loads, and then select Forces generated automatically as shownbelow. Click OK.
7. The loads that display are the default DL1 loads. To display the seismic load, expand the Load Casesdrop-down list and select E8:1-2005 Direction X as shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis
12. In the Loads dialog box select Display loads automatically generated in the program and click OK.
13. The loads now display as shown in part below.
14. Defined parameters and intermediate results of the Seismic Analysis may also be inspected in aCalculation Report. In the Menu Bar, click Analysis > Calculation Notes > Simplified Note.
15. Scroll down in the window to display the information copied to the report, such as this shown below.
8/10/2019 Creating a Structural Model in Autocad Robot Structural Analysis