After Auto optimization Design
12.7 Batch process
Click on Batch Process command brings up a form that allows you to select the elements you want to perform analysis to all the floors simultaneously. In this form, you have the options of running slab analysis, slab design, beam analysis and beam design. Check on the box to select the analysis and click on the Options button to specify the analysis parameters.
Analysis option
· Slab Analysis
· Slab Design
· Beam Analysis
· Beam Design
Note : If you check on overwrite existing valid slab design result check box and accept option by click OK button, previous results will be overwrite.
Figure 12.7: Batch analysis options
12-182 12.8 3D Frame Element
Click the 3D Frame Element icon brings up Mesh Generation form. Click OK button to generate the frame elements. The following items describe each of the areas on this form.
· Lift Core Mesh Size: This option allows you to specify the maximum and minimum mesh size for the liftcore and shear wall. The smaller the mesh sizes defined, the more precise the results are. However this will also take up more of the computer resources and might affect the overall performance.
The default can be set under Project Design Parameters
> 3-D Analysis Parameters > 3-D Frame Generation Options
· Slab Diaphragm Mesh Size: If only Project Design Parameters > 3-D Analysis Parameters > 3-D Analysis Option > Diaphragm Effect check box is checked, you can specify the slab mesh size. Otherwise this option will be disabled. lab diaphragm effect: Selecting this option considers the slab effect into the frame analysis. The lateral loads acting on the structure will be transfer horizontally throughout the floor slab to the main lateral resisting element.
· Mesh Types: You have the option to select the type of meshes to use in the analysis. It is recommended that you use triangular mesh for the analysis.
· Check project integrity: If this check box is checked, the program automatically checks for the structure integrity before generating frame element.
· Gradient effect: If this is activated, the triangle mesh generated is more uniform (please refer to figure 1& 2 below) and the FEM analysis is more precise. The default can be set
under Project Design Parameters > 3-D Analysis Parameters > 3-D Frame Generation Options
Figure 1: less uniform mesh generated if not activate the gradient effect
Figure 2: more uniform mesh generated if using gradient effect
Figure 12.9: Mesh Generation form
12-184 12.9 3D analysis
Click the Analyze button to bring up the 3-D analysis option form.
You can choose to perform analysis with pin or fixed foundation. It is recommended that you select pin foundation for your analysis.
Warning : If you unchecked the check box, the program assumes fixed foundation for the structure. Pad and pile footing design will not be applicable if you assume this condition. The footing designs do not check for moment at this moment.
12.9.1 3D Analysis Results
After analysis, you can view the behaviour of the structure based on the selected load combination. Click on Click to View button to generate the deflection based on this load combination. You can choose the type of data you want to be displayed in the textual output.
Before you generate the model, click on the ticked box to exclude the data in the output.
Once you click on Click to View, the output report will be displayed.
You can open this file with Word document. To find a particular output result, press CTRL + F to bring up the search dialog.
You can create a new load factor combination to your preferences.
Click on the load factor column and specify the value for each factor.
Click on Click to View button for the user-defined load combination to view the results. The selected load factor combination will be highlighted in yellow colour.
Figure 12.8: Load combination table
Notional load results: This program automatically considers notional load into the analysis. To view the notional load results, click on Notional load textual results button.
Wall panel edge reaction: This program allows you to view each wall panel edge reaction. To view it, click on button.
E.g. Say for example if you wish to check the 3rd floor wall panel edge reaction(node 3,61,4) after run the 3D analysis , click on button will give you the following
result:-12-186 2D view: You can view the structural behaviour in plane view. Click on Open 2D View button to display the structure in plane form.
In this view, you can select X-Y view (plan view), X-Z view and Y-Z view . From the pull down list, you can choose to view the plane frame from the selected gridline.
Show deflection : You can choose to disable or enable the deflection of the structure using this option.
Show original element : You can disable the original element when the deflection model is enabled. The program automatically show the original element if the deflection model is disabled.
Animate deflection : Click on this button animates the deflection of the model based on the selected load combination.
You can select a note or an element to view their relative result, if you move your mouse toward a note, the mouse will display a small note“SL” (select note); similarly an element will show “SE” (select element)
Note : This function also applicable to 3D Frame view, just move the mouse to whichever note/element in the structure and click it.
Table 1 below shows the E.g. of Element Results. The result table also can access through VIEW>ELEMENT PROPERTIES at the tool bar.
Table 1 SELECT NODE
12-188 Frame Filter: You can view the 3D structural behaviour and customize to your preference view by this option. E.g.: Untick on RC WALL option in the following E.g. will make the RC wall frame view disappear , to restore the view , just click on the option again.
Similarly for “frame filter” option applicable to any floors or any elements. Alternatively, you can access this window by VIEW >
Frame Filter.