SAP2000 SAP2000 Web Tutorial 1

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Step 5: Defining Shell Sections We will use one shell section property in the model to model the roof diaphragm. We will assume the roof diaphragm to be equivalent to a 1" thick concrete diaphragm. This is not a recommended way to approximate a metal deck diaphragm, it is just a simple and expedient method to use for this example. 1. From the Define menu choose Shell Sections…. This will display the Define Shell Sections dialog box. 2. In this dialog box: • Click the Add New Section button. This will display the Shell Sections dialog box. • In this dialog box: ä Type ROOF in the Section Name edit box. ä Accept the default material CONC. ä In the thickness area type 0.0833 in both the Membrane and Bending edit boxes. ä In the Type area, select the Membrane option. Note: In general we recommend using the Shell type option for shell elements. ä Click the OK button. 3. Click the OK button to close the Define Shell Sections dialog box. 4. Click the Save Model button on the main toolbar, or select Save from the File menu to save the file. This completes the definition of shell sections. SAP2000 Web Tutorial 1 34
Step 6: Assigning Groups Groups can be a powerful tool for selecting elements for both assignments and display. In this step we will create nine groups, as shown in the table below: Group Name ROOF 2ND COLS FRCOLS BRCOLS BRACE1 BRACE2 FRMGIRD BASE Description All roof level joints, frame elements and shell elements All second level joints, frame elements and shell elements All column elements All moment frame columns All braced frame columns All braces between the first and second level All braces between the second level and the roof level All moment frame girders All bottom level columns and support joints Note: By default the program creates a group named ALL which includes all elements in the model (joint elements included). 1. Click in the window labeled X-Y Plane @ Z=24 to make sure it is active. Note when the window is active, its title bar will be highlighted. 2. Click the Pointer button on the side toolbar and select all of the elements in the X-Y Plane @ Z=24 by “windowing.” Note: To add more joints and/or elements to an already assigned group, first select the group, then select more joints and/or elements, and finally assign them to the group. Group assignment always replaces the existing elements in that group. 3. From the Assign menu choose Group Name…. This will display the Assign Group dialog box. 4. In this dialog box: • Type ROOF in the edit box at the top of the Groups area. • Click the Add New Group Name button to define a group named ROOF. Note: A common error is to forget to click the Add New Group Name button before pressing the OK button. • Click the OK button to assign the selected elements to the group named ROOF. 5. Click the Down One Gridline button on the main toolbar to display the plan view at Z=12. Note the window title changes to X-Y Plane @ Z=12. SAP2000 Web Tutorial 1 35
Page 1 and 2: SAP2000 ® Integrated Finite Elemen
Page 3 and 4: DISCLAIMER CONSIDERABLE TIME, EFFOR
Page 5 and 6: A. Introduction This tutorial is qu
Page 7 and 8: B. Description of Building Model Th
Page 9 and 10: Roof Level Second Floor Level Figur
Page 11 and 12: For this model, all mass is input a
Page 13 and 14: ä Check the Restraints box if it i
Page 15 and 16: 12. Place the mouse pointer near th
Page 17 and 18: 18. Place the mouse pointer on the
Page 19 and 20: 37. Click on the points labeled “
Page 21 and 22: If you started the model from scrat
Page 23 and 24: Thus click the ten locations design
Page 25 and 26: Highlight -12 in the Y Location lis
Page 27 and 28: 26. Click anywhere on the combined
Page 29 and 30: Figure C-14: Model After Braces Hav
Page 31 and 32: 56. To finish defining the model ge
Page 33 and 34: • Accept the rest of the default
Page 35 and 36: 16. Highlight CONC in the Materials
Page 37: Note: Frame sections may be selecte
Page 41 and 42: 13. Click the Set Intersecting Line
Page 43 and 44: 37. From the Assign menu choose Gro
Page 45 and 46: Step 7: Assigning Frame Sections Re
Page 47 and 48: 18. In the Frame Sections area clic
Page 49 and 50: 47. In the Frame Sections area clic
Page 51 and 52: Step 8: Assigning Shell Sections 1.
Page 53 and 54: Figure C-16: Frame Element Local Ax
Page 55 and 56: Step 10: Defining Static Load Cases
Page 57 and 58: Step 11: Assigning Frame Static Loa
Page 59 and 60: In the Uniform Load area, type 0. C
Page 61 and 62: Click the OK button to apply the lo
Page 63 and 64: 52. Click the Restore Previous Sele
Page 65 and 66: Step 12: Assigning Shell Static Loa
Page 67 and 68: Step 13: Assigning Joint Static Loa
Page 69 and 70: Select EQX from the Load Case Name
Page 71 and 72: Step 14: Assigning Joint Masses We
Page 73 and 74: 22. Click the Set Elements button o
Page 75 and 76: Step 16: Static and Dynamic Analysi
Page 77 and 78: 5. Use the scroll bar to review the
Page 79 and 80: Step 18: Reviewing Deformed Shapes
Page 81 and 82: Step 19: Reviewing Forces and Stres
Page 83 and 84: 18. All of the load cases in the Se
Page 85 and 86: Step 20: Performing a Steel Design
Page 87 and 88: 11. From the Select menu select Sel
Page 89 and 90:
21. Now we will confirm the unbrace
Page 91 and 92:
and # represents the hinge number.
Page 93 and 94:
• In the Type area select the For
Page 95 and 96:
• Type 1 in the Relative Distance
Page 97 and 98:
19. Click the Save Model button on
Page 99 and 100:
Figure D-2: Frame Hinge Property Da
Page 101 and 102:
12. Click the Set Elements button o
Page 103 and 104:
Figure D-3: Static Pushover Case Da
Page 105 and 106:
the denominator is always the yield
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• In the Options area, select GRA
Page 109 and 110:
Step 5: Running the Pushover Analys
Page 111 and 112:
9. Note that the title of the windo
Page 113 and 114:
force is dropped, all elements unlo
Page 115 and 116:
3. Note that the title of the windo
Page 117 and 118:
Figure D-7: Pushover Curve For Push
Page 119 and 120:
Figure D-8: Capacity spectrum For P
Page 121 and 122:
Note: In the ADRS format, lines of
Page 123 and 124:
32. Check the Show Constant Period
Page 125 and 126:
46. From the File menu at the top o
Page 127:
E. Final Comments This tutorial, to
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