system:
Girder : Moment beam stub : shear splice / hinge : load carrying beam : shear splice / hinge : moment beam stub girder
question :Why FX is produced or generated in load carrying beam which is having a moment release MZ and MY in both ends i.e. internal hinges. Can anyone explain how or from where the FX is produced or generated....
i am attaching the Staad file also for ready reference : kindly review the results for Beam No 88 ,89 and 90.
STAAD SPACESTART JOB INFORMATIONENGINEER DATE 21-Aug-23END JOB INFORMATIONINPUT WIDTH 79UNIT METER MTONJOINT COORDINATES1 0 0 0; 2 5 0 0; 3 0.5 0 0; 4 4.5 0 0; 5 0 0 5; 6 0.5 0 5; 7 4.5 0 5; 8 5 0 5;9 0 0 -5; 12 5 0 -5; 13 10 0 0; 14 10 0 5; 15 10 0 -5; 16 15 0 -5; 17 15 0 0;18 15 0 5; 19 12.5 4 0; 20 12.5 4 5; 21 12.5 4 -5; 22 10 -10 5; 23 10 -10 -5;24 15 -10 -5; 25 15 -10 5; 26 25 0 -5; 27 25 0 0; 28 25 0 5; 29 30 0 -5;30 30 0 0; 31 30 0 5; 32 27.5 4 -5; 33 27.5 4 0; 34 27.5 4 5; 35 25 -10 5;36 25 -10 -5; 37 30 -10 -5; 38 30 -10 5; 39 35 0 -5; 40 35 0 0; 41 35 0 5;42 40 0 -5; 43 40 0 0; 44 40 0 5; 45 37.5 4 -5; 46 37.5 4 0; 47 37.5 4 5;48 35 -10 5; 49 35 -10 -5; 50 40 -10 -5; 51 40 -10 5; 52 35.6 0 0; 53 35.6 0 5;54 35.6 0 -5; 55 39.4 0 0; 56 39.4 0 5; 57 39.4 0 -5; 58 45 0 -5; 59 45 0 0;60 45 0 5; 61 50 0 -5; 62 50 0 0; 63 50 0 5; 64 45.6 0 0; 65 45.6 0 5;66 45.6 0 -5; 67 47.5 4 -5; 68 47.5 4 0; 69 47.5 4 5; 70 45 -10 5;71 45 -10 -5; 72 50 -10 -5; 73 50 -10 5; 74 49.4 0 0; 75 49.4 0 5;76 49.4 0 -5;MEMBER INCIDENCES1 1 3; 2 3 4; 3 4 2; 4 5 6; 5 6 7; 6 7 8; 7 9 12; 8 15 13; 9 13 14; 10 16 17;11 17 18; 12 13 17; 13 14 18; 14 15 16; 15 15 21; 16 16 21; 17 13 19; 18 17 19;19 14 20; 20 18 20; 21 22 14; 22 23 15; 23 24 16; 24 25 18; 25 26 27; 26 27 28;27 29 30; 28 30 31; 29 27 30; 30 28 31; 31 26 29; 32 26 32; 33 32 29; 34 27 33;35 33 30; 36 28 34; 37 34 31; 38 35 28; 39 36 26; 40 37 29; 41 38 31; 42 26 32;43 32 29; 44 27 33; 45 33 30; 46 28 34; 47 34 31; 48 39 40; 49 40 41; 50 42 43;51 43 44; 52 40 52; 53 41 53; 54 39 54; 55 39 45; 56 45 42; 57 40 46; 58 46 43;59 41 47; 60 47 44; 61 48 41; 62 49 39; 63 50 42; 64 51 44; 65 52 55; 66 53 56;67 54 57; 68 55 43; 69 56 44; 70 57 42; 71 58 59; 72 59 60; 73 61 62; 74 62 63;75 59 64; 76 60 65; 77 58 66; 78 58 67; 79 67 61; 80 59 68; 81 68 62; 82 60 69;83 69 63; 84 70 60; 85 71 58; 86 72 61; 87 73 63; 88 64 74; 89 65 75; 90 66 76;91 74 62; 92 75 63; 93 76 61; 94 58 67; 95 61 67; 96 59 68; 97 62 68; 98 60 69;99 63 69;DEFINE PMEMBER7 PMEMBER 1START USER TABLETABLE 1UNIT METER MTONWIDE FLANGEwb7000x1200-85x280.39524 7 0.028 1.2 0.085 3.18223 0.0244925 0.000541277 0.196 0.136ENDMEMBER RELEASE2 5 12 TO 20 29 TO 32 34 36 55 57 59 65 TO 67 78 80 82 88 TO 89 -90 START MPY 0.999 MPZ 0.9992 5 12 TO 14 29 TO 31 33 35 37 56 58 60 65 TO 67 79 81 83 88 TO 89 -90 END MPY 0.999 MPZ 0.999DEFINE MATERIAL STARTISOTROPIC STEELE 2.05e+08POISSON 0.3DENSITY 76.8195ALPHA 1.2e-05DAMP 0.03G 7.88462e+07TYPE STEELSTRENGTH RY 1.5 RT 1.2END DEFINE MATERIALMEMBER PROPERTY JINDAL42 TO 47 94 TO 99 TABLE ST NPB400X180X66.3MEMBER PROPERTY8 TO 11 25 TO 28 48 TO 51 71 TO 74 UPTABLE 1 wb7000x1200-85x28MEMBER PROPERTY JINDAL21 TO 24 38 TO 41 61 TO 64 84 TO 87 TABLE ST NPB600X220X107.61 3 4 6 52 TO 54 65 TO 70 75 TO 77 88 TO 93 TABLE ST WPB600X300X128.82 5 TABLE ST WPB700X300X149.97 12 TO 14 29 TO 31 TABLE ST WPB800X300X171.5MEMBER PROPERTY INDIAN15 TO 20 32 TO 37 TABLE D ISMC7555 TO 60 78 TO 83 TABLE D ISMC100CONSTANTSBETA 90 MEMB 21 TO 24 38 TO 41 61 TO 64 84 TO 87MATERIAL STEEL ALLSUPPORTS1 2 9 12 22 TO 25 35 TO 38 48 TO 51 70 TO 73 PINNED5 8 FIXEDMEMBER OFFSET8 TO 11 25 TO 28 48 TO 51 71 TO 74 START 0 1.5 08 TO 11 25 TO 28 48 TO 51 71 TO 74 END 0 1.5 015 TO 20 32 34 36 55 57 59 78 80 82 START 0 4 021 TO 24 38 TO 41 61 TO 64 84 TO 87 END 0 -2 033 35 37 56 58 60 79 81 83 END 0 4 033 35 37 56 58 60 79 81 83 START 0 0 043 45 47 END 0 0.25 042 44 46 94 TO 99 START 0 0.25 0MEMBER TRUSS 42 TO 47 94 TO 99LOAD 1 LOADTYPE None TITLE LOAD CASE 1MEMBER LOAD2 5 CON GY -507 CON GY -5012 TO 14 29 TO 31 CON GY -5067 90 CON GY -50 1.966 89 CON GY -50 1.965 88 CON GY -50 1.9PERFORM ANALYSISPARAMETER 1CODE INDIANLY 5 MEMB 15 TO 20 32 TO 37 55 TO 60 78 TO 83LZ 5 MEMB 15 TO 20 32 TO 37 55 TO 60 78 TO 83UNL 5 MEMB 15 TO 20 32 TO 37 55 TO 60 78 TO 83SELECT ALLCHECK CODE ALLPERFORM ANALYSISFINISH
It is because the Hinged beam is continuous.
Could please explain how it is happening… free body diagram if possible please