Please help me..i m still newly user with this software..and i m already out of idea how to solve it..can anyone help me how can i do my buckling analysis of my concrete tube length 36 meter and diameter size of my conc.tube is 600 mm..
when i m going to do the analysis..i m stuck..whether to use perform analysis or perform buckling analysis?....i need to know how its buckle condition and the value of bending moment of concrete tube...
here i attached the Staad Pro editor that contains my model to make it clearly to everyone...Can anyone help me out..
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 22-Jan-14
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 0 -1.5 0; 3 0 -3 0; 4 0 -4.5 0; 5 0 -6 0; 6 0 -7.5 0; 7 0 -9 0;
8 0 -10.5 0; 9 0 -12 0; 10 0 -13.5 0; 11 0 -15 0; 12 0 -16.5 0; 13 0 -18 0;
14 0 -19.5 0; 15 0 -21 0; 16 0 -22.5 0; 17 0 -24 0; 18 0 -24.5 0; 19 0 -25.5 0;
20 0 -27 0; 21 0 -28.5 0; 22 0 -30 0; 23 0 -31.5 0; 24 0 -33 0; 25 0 -34.5 0;
26 0 -36 0;
MEMBER INCIDENCES
1 1 2; 2 2 3; 3 3 4; 4 4 5; 5 5 6; 6 6 7; 7 7 8; 8 8 9; 9 9 10; 10 10 11;
11 11 12; 12 12 13; 13 13 14; 14 14 15; 15 15 16; 16 16 17; 17 17 18; 18 18 19;
19 19 20; 20 20 21; 21 21 22; 22 22 23; 23 23 24; 24 24 25; 25 25 26;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 2.05e+008
POISSON 0.3
DENSITY 76.8195
ALPHA 1.2e-005
DAMP 0.03
ISOTROPIC CONCRETE
E 2.17185e+007
POISSON 0.17
DENSITY 23.5616
ALPHA 1e-005
DAMP 0.05
END DEFINE MATERIAL
MEMBER PROPERTY BRITISH
1 TO 25 TABLE ST PIPE OD 0.6 ID 0.4
CONSTANTS
MATERIAL CONCRETE ALL
SUPPORTS
26 FIXED
1 14 TO 25 FIXED BUT FY MX MY MZ
2 FIXED BUT FY MX MY MZ KFX 38857.5 KFZ 38857.5
3 4 FIXED BUT FY MX MY MZ KFX 36738 KFZ 36738
5 FIXED BUT FY MX MY MZ KFX 29673 KFZ 29673
6 FIXED BUT FY MX MY MZ KFX 22608 KFZ 22608
7 FIXED BUT FY MX MY MZ KFX 17662.5 KFZ 17662.5
8 FIXED BUT FY MX MY MZ KFX 14836.5 KFZ 14836.5
9 FIXED BUT FY MX MY MZ KFX 12010.5 KFZ 12010.5
10 FIXED BUT FY MX MY MZ KFX 8831.25 KFZ 8831.25
11 FIXED BUT FY MX MY MZ KFX 3532.5 KFZ 3532.5
12 FIXED BUT FY MX MY MZ KFX 2472.8 KFZ 2472.8
13 FIXED BUT FY MX MY MZ KFX 1413 KFZ 1413
LOAD 1 LOADTYPE None TITLE LOAD CASE 1
JOINT LOAD
1 FY -12480
PERFORM BUCKLING ANALYSIS
FINISH