Hello,
Can you help me regarding unstable joints due to modeling of purlin to structure.
I tried to use master slave command inorder to link the purlin to the rafter but resulted to unstable joints as shown in
postrocessing/ instability tab.
Likeiwse a note **NOTE - NEAR INSTABILITY AT JOINT 49 DIRECTION = FX shown also in .anl file.
My questions are:
1. Thus this note is to be neglected because it is just a note not a warning? pls also explain why?
2. Is it ok to model the purlins without using a small E (stiffness not neglected)?
3. Is master slave connection correct ?
Attached is the staad input.
Thank you.
STAADSPACE
STARTJOBINFORMATION
ENGINEERDATE13-May-16
ENDJOBINFORMATION
INPUTWIDTH79
**************************************************************************
UNITMETERKN
JOINTCOORDINATES
100.33.7; 200.30; 33.50.30; 470.33.7; 570.30; 603.63.7;
703.230; 83.53.230; 93.53.63.7; 1073.63.7; 1173.230;
1203.291670.616667; 1303.353331.23333; 1403.4151.85;
1503.476672.46667; 1603.538333.08333; 1773.291670.616667;
1873.353331.23333; 1973.4151.85; 2073.476672.46667;
2173.538333.08333; 223.53.291670.616667; 233.53.353331.23333;
243.53.4151.85; 253.53.476672.46667; 263.53.538333.08333; 270-0.90;
280-0.93.7; 293.5-0.90; 307-0.90; 317-0.93.7;
3203.391670.616667; 333.53.391670.616667; 3473.391670.616667;
3503.453331.23333; 363.53.453331.23333; 3773.453331.23333;
3803.5151.85; 393.53.5151.85; 4073.5151.85; 4103.576672.46667;
423.53.576672.46667; 4373.576672.46667; 4403.638333.08333;
453.53.638333.08333; 4673.638333.08333; 4703.330; 483.53.330;
4973.330; 5073.73.7; 513.53.73.7; 5203.73.7;
MEMBERINCIDENCES
127; 2511; 316; 4410; 538; 6712; 778; 869; 9811; 10910;
111117; 1328; 1485; 1010822; 10111213; 10121314; 10131415;
10141516; 1015166; 10161718; 10171819; 10181920; 10192021;
10202110; 10212223; 10222324; 10232425; 10242526; 1025269;
103679; 103768; 1038911; 1039810; 1040272; 1041281; 1042293;
1043305; 1044314; 10452728; 10463031; 10472729; 10482930;
10493233; 10503334; 10513536; 10523637; 10533839; 10543940;
10554142; 10564243; 10574445; 10584546; 10594748; 10604849;
10615251; 10625150; 10634732; 10643235; 10653538; 10663841;
10674144; 10684452; 10694833; 10703336; 10713639; 10723942;
10734245; 10744551; 10754934; 10763437; 10773740; 10784043;
10794346; 10804650;
DEFINEPMEMBER
61011TO1015PMEMBER1
111016TO1020PMEMBER2
10101021TO1025PMEMBER3
810PMEMBER4
STARTGROUPDEFINITION
MEMBER
_COLUMN1TO5
_SHEARPRIMARY79
_FIXPRIMARY6810111011TO1020
_SECONDARY10101021TO1025
_HB1036TO1039
_VB1314
_GRID11361011TO1015
_GRID2510101021TO1025
_GRID324111016TO1020
_GRIDA125791314
_GRIDB34810
ENDGROUPDEFINITION
**************************************************************************
SUPPORTS
2831FIXEDBUTMX
29FIXEDBUTMZ
2730FIXEDBUTMXMZ
DEFINEMATERIALSTART
ISOTROPICSTEEL
E2.05e+008
POISSON0.3
DENSITY76.8195
ALPHA1.2e-005
DAMP0.03
TYPESTEEL
STRENGTHFY253200FU407800RY1.5RT1.2
********DUMMY******
ISOTROPICDUMMY
E217.18
DENSITY0
TYPESTEEL
POISSON0.3
DAMP0.03
G7.88462e+007
ALPHA1.2e-005
TYPESTEEL
STRENGTHFY253200FU407800RY1.5RT1.2
STRENGTHRY1RT1
ISOTROPICCONCRETE
E2.17185e+007
POISSON0.17
DENSITY23.5616
ALPHA1e-005
DAMP0.05
TYPECONCRETE
STRENGTHFCU27579
ENDDEFINEMATERIAL
MEMBERPROPERTYEUROPEAN
1TO5TABLESTHE140B
1314TABLESTL60X60X5
1049TO1062TABLESTUPN80
10101021TO1025TABLESTIPE120
1036TO1039TABLEST21.3X2.3CHS
6111011TO1020TABLESTIPE120
810TABLESTIPE120
79TABLESTIPE120
MEMBERPROPERTYEUROPEAN
1040TO1044PRISYD0.3ZD0.3
1045TO1048PRISYD0.3ZD0.2
MEMBERPROPERTYAMERICAN
1063TO1080TABLESTL20202
CONSTANTS
BETA90MEMB1TO5
BETA45MEMB1314
MATERIALSTEELMEMB1TO1113141010TO10251036TO10391049TO1062
MATERIALDUMMYMEMB1063TO1080
MATERIALCONCRETEMEMB1040TO1048
********LOADINGS***********
STARTGROUPDEFINITION
FLOOR
_ROOF1049TO1080
_ROOF26TO111010TO1025
JOINT
_DISPL6TO81011
ENDGROUPDEFINITION
MEMBERRELEASE
791010STARTMYMZ
791025ENDMYMZ
1TO5STARTMXMYMZ
MEMBERTENSION
1036TO1039
MEMBERTRUSS
1314
SLAVEFYMYMZMASTER12JOINT32
SLAVEFYMYMZMASTER13JOINT35
SLAVEFYMYMZMASTER14JOINT38
SLAVEFYMYMZMASTER15JOINT41
SLAVEFYMYMZMASTER16JOINT44
SLAVEFYMYMZMASTER22JOINT33
SLAVEFYMYMZMASTER23JOINT36
SLAVEFYMYMZMASTER24JOINT39
SLAVEFYMYMZMASTER25JOINT42
SLAVEFYMYMZMASTER26JOINT45
SLAVEFYMYMZMASTER17JOINT34
SLAVEFYMYMZMASTER18JOINT37
SLAVEFYMYMZMASTER19JOINT40
SLAVEFYMYMZMASTER20JOINT43
SLAVEFYMYMZMASTER21JOINT46
SLAVEFYMYMZMASTER7JOINT47
SLAVEFYMYMZMASTER6JOINT52
SLAVEFYMYMZMASTER8JOINT48
SLAVEFYMYMZMASTER9JOINT51
SLAVEFYMYMZMASTER11JOINT49
SLAVEFXFYFZMYMZMASTER10JOINT50
DEFINEWINDLOAD
TYPE1WIND1
INT00.5580.6430.706HEIG0234
TYPE2WIND2
INT00.5580.6430.706HEIG0234
EXP1JOINT2357811
TYPE3WIND3
INT00.5580.6430.706HEIG0234
EXP1JOINT146910
LOAD1LOADTYPEDeadTITLEDEAD
SELFWEIGHTY-1
LOAD2LOADTYPEDeadTITLENON-MODELEDDL
***stairs***
***handrail***
***GRATINGS**
ONEWAYLOAD
_ROOFONE-0.07GYINCLINED
***checquered plate***
LOAD3LOADTYPERoofLiveTITLEIMPOSED
ONEWAYLOAD
_ROOFONE-0.4GYINCLINED
LOAD4LOADTYPENoneTITLEWIND +X
ONEWAYLOAD
_ROOFONE0.706GYINCLINED
WINDLOADX1TYPE1OPENMEMB_GRID1
WINDLOADX1TYPE1OPENMEMB_GRID2
WINDLOADX1TYPE1OPENMEMB_GRID3
LOAD5LOADTYPENoneTITLEWIND +Z
ONEWAYLOAD
_ROOF2ONE0.706GYINCLINED
WINDLOADZ1TYPE1OPENMEMB_GRIDA
WINDLOADZ1TYPE1OPENMEMB_GRIDB
*WIND LOAD Z 1 TYPE 2 YR 0 3.22 ZR 0 0.1 OPEN
*WIND LOAD Z 1 TYPE 3 YR 0 3.6 ZR 3.7 3.8 OPEN
LOAD6LOADTYPENoneTITLEWIND -X
ONEWAYLOAD
_ROOFONE0.706GYINCLINED
WINDLOADX-1TYPE1OPENMEMB_GRID1
WINDLOADX-1TYPE1OPENMEMB_GRID2
WINDLOADX-1TYPE1OPENMEMB_GRID3
LOAD7LOADTYPEWindTITLEWIND -Z
ONEWAYLOAD
_ROOF2ONE0.706GYINCLINED
WINDLOADZ-1TYPE1OPENMEMB_GRIDA
WINDLOADZ-1TYPE1OPENMEMB_GRIDB
*WIND LOAD Z -1 TYPE 2 YR 0 3.22 ZR 0 0.1 OPEN
*WIND LOAD Z -1 TYPE 3 YR 0 3.6 ZR 3.7 3.8 OPEN
LOAD8EN1990:6.10B,COMBINATION1000
REPEATLOAD
10.8520.85
LOAD9EN1990:6.10B,COMBINATION1002
REPEATLOAD
10.8520.8531.5
LOAD10EN1990:6.10B,COMBINATION1006
REPEATLOAD
10.8520.8541.5
LOAD11EN1990:6.10B,COMBINATION1008
REPEATLOAD
11.147520.85
LOAD12EN1990:6.10B,COMBINATION1010
REPEATLOAD
11.147520.8531.5
LOAD13EN1990:6.10B,COMBINATION1014
REPEATLOAD
11.147520.8541.5
LOAD14EN1990:6.10B,COMBINATION1016
REPEATLOAD
10.8521.1475
LOAD15EN1990:6.10B,COMBINATION1018
REPEATLOAD
10.8521.147531.5
LOAD16EN1990:6.10B,COMBINATION1022
REPEATLOAD
10.8521.147541.5
LOAD17EN1990:6.10B,COMBINATION1024
REPEATLOAD
11.147521.1475
LOAD18EN1990:6.10B,COMBINATION1026
REPEATLOAD
11.147521.147531.5
LOAD19EN1990:6.10B,COMBINATION1030
REPEATLOAD
11.147521.147541.5
******************************************
LOAD20EN1990:6.10B,COMBINATION2006
REPEATLOAD
10.8520.8551.5
LOAD21EN1990:6.10B,COMBINATION2014
REPEATLOAD
11.147520.8551.5
LOAD22EN1990:6.10B,COMBINATION2022
REPEATLOAD
10.8521.147551.5
LOAD23EN1990:6.10B,COMBINATION2030
REPEATLOAD
11.147521.147551.5
******************************************
LOAD24EN1990:6.10B,COMBINATION3006
REPEATLOAD
10.8520.8561.5
LOAD25EN1990:6.10B,COMBINATION3014
REPEATLOAD
11.147520.8561.5
LOAD26EN1990:6.10B,COMBINATION3022
REPEATLOAD
10.8521.147561.5
LOAD27EN1990:6.10B,COMBINATION3030
REPEATLOAD
11.147521.147561.5
*******************************************
LOAD28EN1990:6.10B,COMBINATION4006
REPEATLOAD
10.8520.8571.5
LOAD29EN1990:6.10B,COMBINATION4014
REPEATLOAD
11.147520.8571.5
LOAD30EN1990:6.10B,COMBINATION4022
REPEATLOAD
10.8521.147571.5
LOAD31EN1990:6.10B,COMBINATION4030
REPEATLOAD
11.147521.147571.5
*******************************************
LOAD100EN1990:6.10B,COMBINATION1000
REPEATLOAD
11.021.0
LOAD101EN1990:6.10B,COMBINATION1002
REPEATLOAD
11.021.031.0
LOAD102EN1990:6.10B,COMBINATION1006
REPEATLOAD
11.021.041.0
******************************************
LOAD103EN1990:6.10B,COMBINATION2006
REPEATLOAD
11.021.051.0
******************************************
LOAD104EN1990:6.10B,COMBINATION3006
REPEATLOAD
11.021.061.0
*******************************************
LOAD105EN1990:6.10B,COMBINATION4006
REPEATLOAD
11.021.071.0
PERFORMANALYSIS
DEFINEENVELOPE
8TO31ENVELOPE1TYPESTRENGTH
100TO105ENVELOPE2TYPESERVICEABILITY
ENDDEFINEENVELOPE
LOADLIST100TO105
PARAMETER1
CODEEN1993-1-1:2005
CAN1MEMB1TO5
TORSION1MEMB1TO111010TO1025
DFF300MEMB1TO5
DFF200MEMB6TO111010TO1025
DJ17MEMB61011TO1015
DJ26MEMB61011TO1015
DJ111MEMB111016TO1020
DJ210MEMB111016TO1020
DJ18MEMB10101021TO1025
DJ29MEMB10101021TO1025
DJ16MEMB810
DJ210MEMB810
SGR2MEMB1TO111010TO1025
RATIO1MEMB1TO5
TRACK4MEMB1TO111010TO1025
***column
CHECKCODEMEMB1TO5
**secondary
CHECKCODEMEMB10101021TO1025
***fixed primary trans
CHECKCODEMEMB6111011TO1020
***fixed primary long
CHECKCODEMEMB810
***pinned primary
CHECKCODEMEMB79
LOADLIST8TO31
PARAMETER2
CODEEN1993-1-1:2005
SGR2MEMB1TO111010TO1025
LY3.718MEMB61011TO1015
LZ3.718MEMB61011TO1015
LY3.718MEMB111016TO1020
LZ3.718MEMB111016TO1020
LY3.718MEMB10101021TO1025
LZ3.718MEMB10101021TO1025
LY7MEMB810
LZ7MEMB810
UNL3.718MEMB61011TO1015
UNL3.718MEMB111016TO1020
UNL3.718MEMB10101021TO1025
UNL3.5MEMB810
KY1MEMB1
KZ2.09398MEMB1
KY1.70873MEMB3
KZ1.77133MEMB3
KY1MEMB2
KZ2.09398MEMB2
KY1.70873MEMB4
KZ1.77133MEMB4
KY0.5MEMB5
KZ1.82845MEMB5
RATIO0.8MEMB1TO5
TRACK0MEMB1TO1113141010TO1025
***column
CHECKCODEMEMB1TO5
**secondary
CHECKCODEMEMB10101021TO1025
***fixed primary trans
CHECKCODEMEMB6111011TO1020
***fixed primary long
CHECKCODEMEMB810
***pinned primary
CHECKCODEMEMB79
***vertical brace
CHECKCODEMEMB1314
***horizontal brace
CHECKCODEMEMB1036TO1039
PRINTSTORYDRIFT
PERFORMANALYSISPRINTALL
FINISH