EX. UK-5 Support Settlement on a Portal Frame
This example demonstrates the application of support displacement load (also known as a sinking support) on a space frame structure.
This problem is installed with the program by default to C:\Users\Public\Public Documents\STAAD.Pro 2024\Samples \Sample Models\UK\UK-5 Support Settlement on a Portal Frame.STD when you install the program.
Where:
- L1 = 3.0m
- L2 = 6.0m
Actual input is shown in bold lettering followed by explanation.
STAAD SPACE TEST FOR SUPPORT DISPLACEMENT
Every input has to start with the term STAAD
. The word SPACE
signifies that the structure is a space frame structure (3-D) and the geometry is defined through X, Y and Z coordinates.
UNITS METER KNS
Defines the input units for the data that follows.
JOINT COORDINATES
1 0.0 0.0 0.0 ; 2 0.0 3.0 0.0
3 6.0 3.0 0.0 ; 4 6.0 0.0 0.0
5 6.0 3.0 6.0 ; 6 6.0 0.0. 6.0
Joint number followed by X, Y and Z coordinates are provided above.
MEMBER INCIDENCE
1 1 2 3
4 3 5 ; 5 5 6
Defines the members by the joints to which they are connected.
UNIT MMS
MEMB PROP
1 TO 5 PRIS AX 6450 IZ 1.249E+08 IY 1.249E+08 IX 4.162E+06
Member properties have been defined above using the PRISMATIC
attribute. Values of AX (area), IZ (moment of inertia about major axis), IY (moment of inertia about minor axis) and IX (torsional constant) are provided in MMS
unit.
DEFINE MATERIAL START
ISOTROPIC STEEL
E 210.
POISSON 0.3
DENSITY 7.68191e-008
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 0.24821 FU 0.399894 RY 1.5 RT 1.2
END DEFINE MATERIAL
CONSTANTS
MATERIAL STEEL ALL
Material are defined using the DEFINE MATERIAL
command and then assigned using the CONSTANT
command.
SUPPORT
1 4 6 FIXED
Joints 1, 4 and 6 are fixed supports.
LOADING 1 SINKING SUPPORT
Load case 1 is initiated followed by a title.
SUPPORT DISPLACEMENT LOAD
4 FY –15
Load 1 is a support displacement load which is also commonly known as a sinking support.
FY
signifies that the support settlement is in the global Y direction and the value of this settlement is 15mm downward.
PERFORM ANALYSIS
This command instructs the program to proceed with the analysis.
PRINT ANALYSIS RESULTS
The above PRINT
command instructs the program to print joint displacements, support reactions and member forces.
FINISH
This command terminates the STAAD run.
Input File
STAAD SPACE TEST FOR SUPPORT DISPLACEMENT
UNITS METER KNS
JOINT COORDINATES
1 0.0 0.0 0.0 ; 2 0.0 3.0 0.0
3 6.0 3.0 0.0 ; 4 6.0 0.0 0.0
5 6.0 3.0 6.0 ; 6 6.0 0.0 6.0
MEMBER INCIDENCE
1 1 2 3
4 3 5 ; 5 5 6
UNIT MMS
MEMB PROP
1 TO 5 PRIS AX 6450 IZ 1.249E+08 IY 1.249E+08 IX 4.162E+06
DEFINE MATERIAL START
ISOTROPIC STEEL
E 210.
POISSON 0.3
DENSITY 7.68191e-008
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 0.24821 FU 0.399894 RY 1.5 RT 1.2
END DEFINE MATERIAL
CONSTANTS
MATERIAL STEEL ALL
SUPPORT
1 4 6 FIXED
LOADING 1 SINKING SUPPORT
SUPPORT DISPLACEMENT LOAD
4 FY -15.
PERFORM ANALYSIS
PRINT ANALYSIS RESULTS
FINISH
PAGE NO. 1
****************************************************
* *
* STAAD.Pro 2023 *
* Version 23.00.03.** *
* Proprietary Program of *
* Bentley Systems, Inc. *
* Date= JUL 4, 2024 *
* Time= 11:23:11 *
* *
* Licensed to: Bentley Systems Inc *
****************************************************
1. STAAD SPACE TEST FOR SUPPORT DISPLACEMENT
INPUT FILE: D:\Documentation\STAAD.Pro\_Automated_Py\output\2024-07-04\SPro_Output_Input_Files\Sample .. .STD
2. UNITS METER KNS
3. JOINT COORDINATES
4. 1 0.0 0.0 0.0 ; 2 0.0 3.0 0.0
5. 3 6.0 3.0 0.0 ; 4 6.0 0.0 0.0
6. 5 6.0 3.0 6.0 ; 6 6.0 0.0 6.0
7. MEMBER INCIDENCE
8. 1 1 2 3
9. 4 3 5 ; 5 5 6
10. UNIT MMS
11. MEMB PROP
12. 1 TO 5 PRIS AX 6450 IZ 1.249E+08 IY 1.249E+08 IX 4.162E+06
13. DEFINE MATERIAL START
14. ISOTROPIC STEEL
15. E 210.
16. POISSON 0.3
17. DENSITY 7.68191E-008
18. ALPHA 6E-006
19. DAMP 0.03
20. TYPE STEEL
21. STRENGTH FY 0.24821 FU 0.399894 RY 1.5 RT 1.2
22. END DEFINE MATERIAL
23. CONSTANTS
24. MATERIAL STEEL ALL
25. SUPPORT
26. 1 4 6 FIXED
27. LOADING 1 SINKING SUPPORT
28. SUPPORT DISPLACEMENT LOAD
29. 4 FY -15.
30. PERFORM ANALYSIS
TEST FOR SUPPORT DISPLACEMENT -- PAGE NO. 2
P R O B L E M S T A T I S T I C S
-----------------------------------
NUMBER OF JOINTS 6 NUMBER OF MEMBERS 5
NUMBER OF PLATES 0 NUMBER OF SOLIDS 0
NUMBER OF SURFACES 0 NUMBER OF SUPPORTS 3
Using 64-bit analysis engine.
SOLVER USED IS THE IN-CORE ADVANCED MATH SOLVER
TOTAL PRIMARY LOAD CASES = 1, TOTAL DEGREES OF FREEDOM = 18
TOTAL LOAD COMBINATION CASES = 0 SO FAR.
31. PRINT ANALYSIS RESULTS
ANALYSIS RESULTS
TEST FOR SUPPORT DISPLACEMENT -- PAGE NO. 3
JOINT DISPLACEMENT (CM RADIANS) STRUCTURE TYPE = SPACE
------------------
JOINT LOAD X-TRANS Y-TRANS Z-TRANS X-ROTAN Y-ROTAN Z-ROTAN
1 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
2 1 0.2737 -0.0012 -0.0323 -0.0002 0.0006 -0.0019
3 1 0.2735 -1.4975 -0.2735 -0.0018 0.0000 -0.0018
4 1 0.0000 -1.5000 0.0000 0.0000 0.0000 0.0000
5 1 0.0323 -0.0012 -0.2737 -0.0019 -0.0006 -0.0002
6 1 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
TEST FOR SUPPORT DISPLACEMENT -- PAGE NO. 4
SUPPORT REACTIONS -UNIT KNS MMS STRUCTURE TYPE = SPACE
-----------------
JOINT LOAD FORCE-X FORCE-Y FORCE-Z MOM-X MOM-Y MOM Z
1 1 0.46 5.63 0.90 2780.50 -67.13 15492.89
4 1 0.43 -11.26 -0.43 15509.16 0.00 15509.16
6 1 -0.90 5.63 -0.46 15492.89 67.13 2780.50
TEST FOR SUPPORT DISPLACEMENT -- PAGE NO. 5
MEMBER END FORCES STRUCTURE TYPE = SPACE
-----------------
ALL UNITS ARE -- KNS MMS (LOCAL )
MEMBER LOAD JT AXIAL SHEAR-Y SHEAR-Z TORSION MOM-Y MOM-Z
1 1 1 5.63 -0.46 0.90 -67.13 -2780.50 15492.89
2 -5.63 0.46 -0.90 67.13 94.34 -16878.26
2 1 2 0.46 5.63 0.90 94.34 -67.13 16878.26
3 -0.46 -5.63 -0.90 -94.34 -5305.18 16904.29
3 1 3 -11.26 -0.43 0.43 -0.00 -16809.94 -16809.94
4 11.26 0.43 -0.43 0.00 15509.16 15509.16
4 1 3 0.46 -5.63 -0.90 -94.34 5305.18 -16904.29
5 -0.46 5.63 0.90 94.34 67.13 -16878.26
5 1 5 5.63 0.90 0.46 67.13 -16878.26 -94.34
6 -5.63 -0.90 -0.46 -67.13 15492.89 2780.50
************** END OF LATEST ANALYSIS RESULT **************
32. FINISH
*********** END OF THE STAAD.Pro RUN ***********
**** DATE= JUL 4,2024 TIME= 11:23:12 ****
TEST FOR SUPPORT DISPLACEMENT -- PAGE NO. 6
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