Hello, I am having a problem when modeling a concrete structure of a house. The values I get after running the model are completely out of scale and I don't understand what could be causing it.As can be seen, all the supports are pinned supports and in some beams I have changed their properties at their starts and ends, releasing the moment in all three directions.
As can be seen from the summary table, the values obtained are completely illogical for the given load combinations.If I go back to the original model (without releasing the moments in all three directions at the ends of some beams), the problem disappears and the results are much more consistent.I need help please.THANKS IN ADVANCE,IgnacioCODE:STAAD SPACE DXF IMPORT OF DIAGRAMA DE ALAMBRESSTART JOB INFORMATIONENGINEER DATE 16-May-22END JOB INFORMATIONINPUT WIDTH 79UNIT METER KNJOINT COORDINATES1 0 0 0; 2 5.50001 0 0; 3 0 0 4.70001; 5 5.00001 0 4.70001; 7 0 0 8.30002;9 5.00001 0 9.70002; 10 6.96001 0 9.70002; 11 6.96001 0 4.70001;12 3.80001 0 12.15; 13 0 0 12.15; 14 0 0 10.95; 16 6.96001 0 12.15;21 0.600001 0 15.4; 22 5.00001 0 15.4; 23 0.600001 0 17.65;24 0.600001 0 20.25; 29 5.00001 0 18.21; 31 6.96001 0 18.21;32 -9.72002 0 10.95; 34 -9.72002 0 15.4; 35 -7.88002 0 15.4;36 -9.72002 0 20.25; 37 -7.88002 0 20.25; 38 -4.70001 0 20.25;39 -9.72002 0 22.2; 41 -6.72001 0 22.2; 42 0 3.17001 0; 43 5.50001 3.17001 0;44 -9.72002 3.17001 20.25; 45 -4.70001 3.17001 20.25; 46 -9.72002 3.17001 22.2;48 -6.72001 3.17001 22.2; 49 0 3.17001 4.70001; 50 3.80001 3.17001 4.70001;51 5.00001 3.17001 4.70001; 52 5.50001 3.17001 4.70001;53 6.96001 3.17001 4.70001; 54 0 3.17001 8.30002; 56 5.00001 3.17001 9.70002;57 6.96001 3.17001 9.70002; 58 3.80001 3.17001 12.15; 59 0 3.17001 12.15;60 0 3.17001 10.95; 61 5.00001 3.17001 12.15; 62 3.80001 3.17001 14.4;63 0 3.17001 14.4; 64 3.80001 3.17001 15.4; 65 0 3.17001 15.4;66 5.00001 3.17001 15.4; 67 0.600001 3.17001 17.65; 68 0.600001 3.17001 20.25;71 5.00001 3.17001 20.25; 73 5.00001 3.17001 18.21; 75 6.96001 3.17001 18.21;76 -9.12002 3.17001 10.95; 77 -9.72002 3.17001 10.95; 78 -9.72002 3.17001 15.4;79 -7.88002 3.17001 15.4; 80 -7.88002 3.17001 20.25; 81 6.96001 3.17001 12.15;82 0.600001 3.17001 15.4; 94 2.60001 3.17001 17.65; 95 2.60001 3.17001 20.25;96 5.00001 3.17001 17.65; 97 5.00001 3.17001 14.4; 98 0 -0.400001 0;99 5.50001 -0.400001 0; 100 0 -0.400001 4.70001; 101 5.00001 -0.400001 4.70001;102 0 -0.400001 8.30002; 103 5.00001 -0.400001 9.70002;104 6.96001 -0.400001 9.70002; 105 6.96001 -0.400001 4.70001;106 3.80001 -0.400001 12.15; 107 0 -0.400001 12.15; 108 0 -0.400001 10.95;109 6.96001 -0.400001 12.15; 110 0.600001 -0.400001 15.4;111 5.00001 -0.400001 15.4; 112 0.600001 -0.400001 17.65;113 0.600001 -0.400001 20.25; 114 5.00001 -0.400001 18.21;115 6.96001 -0.400001 18.21; 116 -9.12002 -0.400001 10.95;117 -9.72002 -0.400001 15.4; 118 -7.88002 -0.400001 15.4;119 -9.72002 -0.400001 20.25; 120 -7.88002 -0.400001 20.25;121 -4.70001 -0.400001 20.25; 122 -9.72002 -0.400001 22.2;123 -6.72001 -0.400001 22.2; 124 0 -0.900002 0; 125 5.50001 -0.900002 0;126 0 -0.900002 4.70001; 127 5.00001 -0.900002 4.70001;128 0 -0.900002 8.30002; 129 5.00001 -0.900002 9.70002;130 6.96001 -0.900002 9.70002; 131 6.96001 -0.900002 4.70001;132 3.80001 -0.900002 12.15; 133 0 -0.900002 12.15; 134 0 -0.900002 10.95;135 6.96001 -0.900002 12.15; 136 0.600001 -0.900002 15.4;137 5.00001 -0.900002 15.4; 138 0.600001 -0.900002 17.65;139 0.600001 -0.900002 20.25; 140 5.00001 -0.900002 18.21;141 6.96001 -0.900002 18.21; 142 -9.72002 -0.900002 10.95;143 -9.72002 -0.900002 15.4; 144 -7.88002 -0.900002 15.4;145 -9.72002 -0.900002 20.25; 146 -7.88002 -0.900002 20.25;147 -4.70001 -0.900002 20.25; 148 -9.72002 -0.900002 22.2;149 -6.72001 -0.900002 22.2; 150 5.50001 -0.400001 4.70001;151 5.00001 -0.400001 8.30002; 152 -9.72002 -0.400001 10.95;153 -6.72001 -0.400001 20.25; 154 2.60001 -0.399998 17.65;157 5.00001 -0.400001 12.15; 158 0 -0.400001 15.4; 159 0 -0.400001 14.4;160 3.80001 -0.400001 14.4; 161 3.80001 -0.400001 15.4;162 3.80001 -0.400001 8.30002; 163 3.80001 -0.400001 4.70001;164 -6.72001 3.17001 20.25; 165 5.00001 -0.400001 17.65;166 -4.70001 3.17001 22.2; 167 5.00001 3.17001 18.99;168 6.96001 3.17001 18.99; 169 2.60001 3.17001 15.4;170 -4.70001 -0.400001 22.2; 171 -4.70001 -0.900002 22.2;172 -4.56001 3.17001 10.95; 174 -4.56001 -0.400001 10.95;175 -4.56001 -0.900002 10.95; 176 -3.94001 3.17001 15.4; 177 -3.94001 0 15.4;178 -3.94001 -0.400001 15.4; 179 -3.94001 -0.900002 15.4;180 5.00001 -0.399997 18.99; 181 6.96001 -0.399997 18.99;MEMBER INCIDENCES56 1 42; 57 2 43; 58 3 49; 59 11 53; 60 10 57; 61 9 56; 62 5 51; 63 42 43;64 42 49; 65 51 52; 66 52 53; 67 43 52; 68 53 57; 69 56 57; 70 51 56; 71 49 50;72 50 51; 73 54 7; 74 49 54; 75 77 32; 78 46 39; 79 48 41; 81 38 45; 82 46 48;83 37 80; 84 14 60; 86 54 60; 87 12 58; 88 13 59; 90 59 58; 93 36 44; 96 16 81;97 31 75; 99 24 68; 101 23 67; 107 21 82; 110 56 61; 111 29 73; 112 22 66;117 58 62; 118 62 64; 119 44 46; 130 78 79; 131 78 44; 132 44 80; 133 79 176;134 80 164; 135 45 68; 136 68 67; 137 82 67; 143 65 82; 150 96 73; 154 68 95;155 73 167; 156 95 71; 157 67 94; 158 94 95; 271 63 65; 272 60 59; 273 59 63;275 81 75; 277 61 81; 278 58 61; 279 61 97; 280 97 66; 282 78 34; 291 79 35;292 64 66; 294 82 169; 296 66 96; 297 76 172; 298 1 98; 299 98 124; 300 2 99;301 99 125; 302 3 100; 303 100 126; 304 7 102; 305 102 128; 306 5 101;307 101 127; 308 11 105; 309 105 131; 310 32 152; 311 152 142; 312 34 117;313 117 143; 314 35 118; 315 144 118; 316 36 119; 317 119 145; 318 39 122;319 122 148; 320 37 120; 321 120 146; 322 41 123; 323 123 149; 324 38 121;325 121 147; 326 23 112; 327 112 138; 328 24 113; 329 113 139; 330 13 107;331 107 133; 332 21 110; 333 110 136; 334 14 108; 335 108 134; 336 29 114;337 114 140; 338 31 115; 339 115 141; 340 22 111; 341 111 137; 342 16 109;343 109 135; 344 10 104; 345 104 130; 346 12 106; 347 106 132; 348 9 103;349 103 129; 350 98 99; 351 98 100; 353 101 150; 354 100 102; 355 102 108;356 116 174; 357 117 118; 358 118 178; 359 105 104; 360 103 104; 361 110 112;362 112 113; 363 118 120; 364 119 120; 365 120 153; 366 122 123; 367 119 122;368 100 163; 369 150 105; 370 99 150; 371 101 151; 372 151 103; 373 102 162;374 108 107; 375 121 113; 376 117 119; 377 117 152; 378 152 116; 379 153 121;381 106 157; 382 109 115; 383 107 106; 384 112 154; 390 110 161; 391 111 165;392 157 109; 393 157 111; 394 158 110; 395 107 159; 396 103 157; 397 159 158;398 159 160; 399 106 160; 400 161 111; 401 160 161; 403 163 101; 404 163 162;405 162 106; 406 76 77; 407 77 78; 408 164 45; 409 164 48; 410 63 62;411 79 80; 412 165 114; 413 154 165; 414 45 166; 415 48 166; 416 167 71;417 75 168; 418 167 168; 419 169 64; 420 94 169; 421 121 170; 422 123 170;423 170 171; 424 172 60; 426 174 108; 428 174 175; 429 176 65; 431 178 158;433 179 178; 434 114 180; 435 180 181; 436 115 181;DEFINE PMEMBER133 429 PMEMBER 1START GROUP DEFINITIONFLOOR_LOSA1 63 TO 65 67 71 72_LOSA2 70 TO 72 74 86 90 110 272 278_LOSA3 65 66 68 TO 70_LOSA4 130 133 271 TO 273 297 406 407 424 429_LOSA5 150 155 275 277 279 280 296 417 418_LOSA5B 117 118 278 TO 280 292_LOSA6 150 155 156 158 292 296 416 419 420_LOSA6B 137 157 294 420_LOSA7 133 TO 137 143 408 411 429_LOSA8 118 143 271 294 410 419_LOSA9 82 119 132 134 408 414 415 421 422_LOSA10 130 TO 132 411_PARED1 78 79 82_PARED2 81 99 135_PARED3 93 97 132 134 135 154 156 408 418_LOSAA 350 351 353 368 370 403_LOSAB 354 368 373 404_LOSAC 371 372 381 396 403 TO 405_LOSAD 353 359 360 369 371 372_LOSAE 355 373 374 383 405_LOSAG 383 395 398 399_LOSAH 390 394 397 398 401_LOSAI 381 393 399 TO 401_LOSAJ 382 391 TO 393 412 434 TO 436_LOSAK 356 TO 358 374 377 378 395 397 426 431_LOSAL 357 363 364 376_LOSAM 358 361 TO 363 365 375 379 394 431_LOSAN 361 384 390 391 400 413_LOSAO 364 TO 367 379 421 422END GROUP DEFINITIONDEFINE MATERIAL STARTISOTROPIC CONCRETEE 2.17184e+07POISSON 0.17DENSITY 23.5615ALPHA 5.5e-06DAMP 0.05G 9.28137e+06TYPE CONCRETESTRENGTH FCU 27578.9ISOTROPIC H30E 3e+07G 1.5e+07TYPE CONCRETESTRENGTH FCU 30000END DEFINE MATERIALMEMBER PROPERTY350 351 353 TO 379 381 TO 384 390 TO 401 403 TO 405 412 413 421 422 426 431 -434 TO 436 PRIS YD 0.3 ZD 0.2556 TO 62 73 75 78 79 81 83 84 87 88 93 96 97 99 101 107 111 112 132 282 291 -298 300 302 304 306 308 310 312 314 316 318 320 322 324 326 328 330 332 334 -336 338 340 342 344 346 348 PRIS YD 0.2 ZD 0.2130 TO 137 143 150 154 TO 158 292 294 296 408 416 419 429 PRIS YD 0.75 ZD 0.263 TO 72 74 82 86 90 110 117 TO 119 271 TO 273 275 277 TO 280 297 406 407 -409 TO 411 414 415 417 418 420 424 PRIS YD 0.45 ZD 0.2299 301 303 305 307 309 311 313 315 317 319 321 323 325 327 329 331 333 335 -337 339 341 343 345 347 349 423 428 433 PRIS YD 0.25 ZD 0.25CONSTANTSMATERIAL CONCRETE ALLSUPPORTS124 TO 149 171 175 179 PINNEDMEMBER RELEASE350 START MX MY MZ350 END MX MY MZ368 START MX MY MZ369 END MX MY MZ373 START MX MY MZ359 START MX MY MZ359 END MX MY MZ370 START MX MY MZ370 END MX MY MZ360 START MX MY MZ360 END MX MY MZ378 START MX MY MZ426 END MX MY MZ383 START MX MY MZ381 END MX MY MZ392 START MX MY MZ392 END MX MY MZ398 START MX MY MZ398 END MX MY MZ357 START MX MY MZ373 END MX MY MZ413 START MX MY MZ413 END MX MY MZ364 START MX MY MZ375 END MX MY MZ366 START MX MY MZ422 END MX MY MZ367 END MX MY MZ363 START MX MY MZ363 END MX MY MZ421 START MX MY MZ421 END MX MY MZ351 START MX MY MZ397 END MX MY MZ361 START MX MY MZ362 END MX MY MZ404 START MX MY MZ401 END MX MY MZ371 START MX MY MZ435 START MX MY MZ435 END MX MY MZ434 END MX MY MZ382 START MX MY MZ436 END MX MY MZ377 END MX MY MZ384 START MX MY MZ400 END MX MY MZLOAD 1 LOADTYPE None TITLE DLSELFWEIGHT Y -1 LOAD 2 LOADTYPE None TITLE PESO LOSASONEWAY LOAD_LOSAA ONE -3 GY_LOSAB ONE -3 GY_LOSAD ONE -3 GY_LOSAE ONE -3 GY_LOSAH ONE -3 GY_LOSAI ONE -3 GY_LOSAJ ONE -3 GY_LOSAK ONE -3 GY_LOSAL ONE -3 GY_LOSAM ONE -3 GY_LOSAN ONE -3 GY_LOSAC ONE -3 GY_LOSAO ONE -3 GYLOAD 4 LOADTYPE None TITLE PESO MUROSMEMBER LOAD350 351 353 TO 355 357 TO 377 379 381 TO 384 390 TO 401 403 TO 405 412 413 -421 422 431 434 TO 436 UNI GY -8LOAD 3 LOADTYPE None TITLE SOBRECARGA LOSASONEWAY LOAD_LOSAA ONE -2 GY_LOSAB ONE -2 GY_LOSAD ONE -2 GY_LOSAE ONE -2 GY_LOSAH ONE -2 GY_LOSAI ONE -2 GY_LOSAJ ONE -2 GY_LOSAK ONE -2 GY_LOSAL ONE -2 GY_LOSAM ONE -2 GY_LOSAN ONE -2 GY_LOSAC ONE -2 GY_LOSAO ONE -2 GYLOAD COMB 10 LC: 0.9 D1 0.9 2 0.9 4 0.9 LOAD COMB 11 LC: 1.2 D + 1.6 L1 1.2 2 1.2 4 1.2 3 1.6 LOAD COMB 19 LC(ELS): D + L + W21 1.0 2 1.0 4 1.0 3 1.0 LOAD COMB 20 LC(ELS): D + L + W11 1.0 2 1.0 4 1.0 3 1.0 PERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSISPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLPERFORM ANALYSIS PRINT ALLFINISH
The model is over released. Kindly re-check the member releases assigned that seems to contribute to the structure having improper load path for loads to travel down to the supports. I have used partial releases instead of full releases for members and now the model converges to a much more reasonable solution. Also node #177 is an orphan node and I have removed that. Also multiple Perform Analysis commands are used which is unnecessary.5367.Test.STD
Answer Verified By: Ignacio Rojas Aráoz
Thank you very much.
If you put partial moment release of 0.99,what does this imply or mean?
Please refer to the following:
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/58005/partial-moment-releases#:~:text=That%20limited%20ability%20of%20a,using%20values%20less%20than%200.95.