Bill2001
Civil/Environmental
- Aug 28, 2007
- 33
Dear StaadPro experts,
I'd like to model a slab on wall with no solid connection (as roof of a reservoir). As you see in section 5.22.2 of Staad.pro Technical Reference manual, Releasing Fz, Mx, My will release all bending capability of plate. But as you see in attached file, you still get Mx and My at released joints. Could you please kindly tell me what's wrong?
Thanks in advance.
Below is the input file:
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 04-Sep-07
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER MTON
JOINT COORDINATES
1 0 0 0; 2 3 0 0; 3 0 0 3; 4 3 0 3; 5 0 3 0; 6 3 3 0; 7 0 3 3; 8 3 3 3;
9 0 0 0.5; 10 0.5 0 0.5; 11 0.5 0 0; 12 0 0 1; 13 0.5 0 1; 14 0 0 1.5;
15 0.5 0 1.5; 16 0 0 2; 17 0.5 0 2; 18 0 0 2.5; 19 0.5 0 2.5; 20 0.5 0 3;
21 1 0 0.5; 22 1 0 0; 23 1 0 1; 24 1 0 1.5; 25 1 0 2; 26 1 0 2.5; 27 1 0 3;
28 1.5 0 0.5; 29 1.5 0 0; 30 1.5 0 1; 31 1.5 0 1.5; 32 1.5 0 2; 33 1.5 0 2.5;
34 1.5 0 3; 35 2 0 0.5; 36 2 0 0; 37 2 0 1; 38 2 0 1.5; 39 2 0 2; 40 2 0 2.5;
41 2 0 3; 42 2.5 0 0.5; 43 2.5 0 0; 44 2.5 0 1; 45 2.5 0 1.5; 46 2.5 0 2;
47 2.5 0 2.5; 48 2.5 0 3; 49 3 0 0.5; 50 3 0 1; 51 3 0 1.5; 52 3 0 2;
53 3 0 2.5; 54 0 3 0.5; 55 0.5 3 0.5; 56 0.5 3 0; 57 0 3 1; 58 0.5 3 1;
59 0 3 1.5; 60 0.5 3 1.5; 61 0 3 2; 62 0.5 3 2; 63 0 3 2.5; 64 0.5 3 2.5;
65 0.5 3 3; 66 1 3 0.5; 67 1 3 0; 68 1 3 1; 69 1 3 1.5; 70 1 3 2; 71 1 3 2.5;
72 1 3 3; 73 1.5 3 0.5; 74 1.5 3 0; 75 1.5 3 1; 76 1.5 3 1.5; 77 1.5 3 2;
78 1.5 3 2.5; 79 1.5 3 3; 80 2 3 0.5; 81 2 3 0; 82 2 3 1; 83 2 3 1.5; 84 2 3 2;
85 2 3 2.5; 86 2 3 3; 87 2.5 3 0.5; 88 2.5 3 0; 89 2.5 3 1; 90 2.5 3 1.5;
91 2.5 3 2; 92 2.5 3 2.5; 93 2.5 3 3; 94 3 3 0.5; 95 3 3 1; 96 3 3 1.5;
97 3 3 2; 98 3 3 2.5; 99 0 0.5 2.5; 100 0 0.5 3; 101 0 0.5 2; 102 0 0.5 1.5;
103 0 0.5 1; 104 0 0.5 0.5; 105 0 0.5 0; 106 0 1 2.5; 107 0 1 3; 108 0 1 2;
109 0 1 1.5; 110 0 1 1; 111 0 1 0.5; 112 0 1 0; 113 0 1.5 2.5; 114 0 1.5 3;
115 0 1.5 2; 116 0 1.5 1.5; 117 0 1.5 1; 118 0 1.5 0.5; 119 0 1.5 0;
120 0 2 2.5; 121 0 2 3; 122 0 2 2; 123 0 2 1.5; 124 0 2 1; 125 0 2 0.5;
126 0 2 0; 127 0 2.5 2.5; 128 0 2.5 3; 129 0 2.5 2; 130 0 2.5 1.5; 131 0 2.5 1;
132 0 2.5 0.5; 133 0 2.5 0; 134 3 0.5 0.5; 135 3 0.5 0; 136 3 0.5 1;
137 3 0.5 1.5; 138 3 0.5 2; 139 3 0.5 2.5; 140 3 0.5 3; 141 3 1 0.5; 142 3 1 0;
143 3 1 1; 144 3 1 1.5; 145 3 1 2; 146 3 1 2.5; 147 3 1 3; 148 3 1.5 0.5;
149 3 1.5 0; 150 3 1.5 1; 151 3 1.5 1.5; 152 3 1.5 2; 153 3 1.5 2.5;
154 3 1.5 3; 155 3 2 0.5; 156 3 2 0; 157 3 2 1; 158 3 2 1.5; 159 3 2 2;
160 3 2 2.5; 161 3 2 3; 162 3 2.5 0.5; 163 3 2.5 0; 164 3 2.5 1; 165 3 2.5 1.5;
166 3 2.5 2; 167 3 2.5 2.5; 168 3 2.5 3;
ELEMENT INCIDENCES SHELL
5 1 9 10 11; 6 9 12 13 10; 7 12 14 15 13; 8 14 16 17 15; 9 16 18 19 17;
10 18 3 20 19; 11 11 10 21 22; 12 10 13 23 21; 13 13 15 24 23; 14 15 17 25 24;
15 17 19 26 25; 16 19 20 27 26; 17 22 21 28 29; 18 21 23 30 28; 19 23 24 31 30;
20 24 25 32 31; 21 25 26 33 32; 22 26 27 34 33; 23 29 28 35 36; 24 28 30 37 35;
25 30 31 38 37; 26 31 32 39 38; 27 32 33 40 39; 28 33 34 41 40; 29 36 35 42 43;
30 35 37 44 42; 31 37 38 45 44; 32 38 39 46 45; 33 39 40 47 46; 34 40 41 48 47;
35 43 42 49 2; 36 42 44 50 49; 37 44 45 51 50; 38 45 46 52 51; 39 46 47 53 52;
40 47 48 4 53; 41 5 54 55 56; 42 54 57 58 55; 43 57 59 60 58; 44 59 61 62 60;
45 61 63 64 62; 46 63 7 65 64; 47 56 55 66 67; 48 55 58 68 66; 49 58 60 69 68;
50 60 62 70 69; 51 62 64 71 70; 52 64 65 72 71; 53 67 66 73 74; 54 66 68 75 73;
55 68 69 76 75; 56 69 70 77 76; 57 70 71 78 77; 58 71 72 79 78; 59 74 73 80 81;
60 73 75 82 80; 61 75 76 83 82; 62 76 77 84 83; 63 77 78 85 84; 64 78 79 86 85;
65 81 80 87 88; 66 80 82 89 87; 67 82 83 90 89; 68 83 84 91 90; 69 84 85 92 91;
70 85 86 93 92; 71 88 87 94 6; 72 87 89 95 94; 73 89 90 96 95; 74 90 91 97 96;
75 91 92 98 97; 76 92 93 8 98; 77 3 18 99 100; 78 18 16 101 99;
79 16 14 102 101; 80 14 12 103 102; 81 12 9 104 103; 82 9 1 105 104;
83 100 99 106 107; 84 99 101 108 106; 85 101 102 109 108; 86 102 103 110 109;
87 103 104 111 110; 88 104 105 112 111; 89 107 106 113 114; 90 106 108 115 113;
91 108 109 116 115; 92 109 110 117 116; 93 110 111 118 117; 94 111 112 119 118;
95 114 113 120 121; 96 113 115 122 120; 97 115 116 123 122; 98 116 117 124 123;
99 117 118 125 124; 100 118 119 126 125; 101 121 120 127 128;
102 120 122 129 127; 103 122 123 130 129; 104 123 124 131 130;
105 124 125 132 131; 106 125 126 133 132; 107 128 127 63 7; 108 127 129 61 63;
109 129 130 59 61; 110 130 131 57 59; 111 131 132 54 57; 112 132 133 5 54;
113 2 49 134 135; 114 49 50 136 134; 115 50 51 137 136; 116 51 52 138 137;
117 52 53 139 138; 118 53 4 140 139; 119 135 134 141 142; 120 134 136 143 141;
121 136 137 144 143; 122 137 138 145 144; 123 138 139 146 145;
124 139 140 147 146; 125 142 141 148 149; 126 141 143 150 148;
127 143 144 151 150; 128 144 145 152 151; 129 145 146 153 152;
130 146 147 154 153; 131 149 148 155 156; 132 148 150 157 155;
133 150 151 158 157; 134 151 152 159 158; 135 152 153 160 159;
136 153 154 161 160; 137 156 155 162 163; 138 155 157 164 162;
139 157 158 165 164; 140 158 159 166 165; 141 159 160 167 166;
142 160 161 168 167; 143 163 162 94 6; 144 162 164 95 94; 145 164 165 96 95;
146 165 166 97 96; 147 166 167 98 97; 148 167 168 8 98;
ELEMENT PROPERTY
5 TO 148 THICKNESS 0.4
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2.21467e+006
POISSON 0.17
DENSITY 2.40262
ALPHA 1e-005
DAMP 0.05
END DEFINE MATERIAL
CONSTANTS
MATERIAL CONCRETE ALL
SUPPORTS
5 TO 40 PLATE MAT DIRECT Y SUBGRADE 2000
ELEMENT RELEASE
41 TO 46 J1 MX MY
41 TO 46 J2 MX MY
71 TO 76 J3 MX MY
71 TO 76 J4 MX MY
LOAD 1 LOADTYPE None TITLE DEAD
SELFWEIGHT Y -1
LOAD 2 LOADTYPE None TITLE LIVE
ELEMENT LOAD
41 TO 76 PR -2
LOAD COMB 3 D+L
1 1.0 2 1.0
PERFORM ANALYSIS PRINT ALL
FINISH
I'd like to model a slab on wall with no solid connection (as roof of a reservoir). As you see in section 5.22.2 of Staad.pro Technical Reference manual, Releasing Fz, Mx, My will release all bending capability of plate. But as you see in attached file, you still get Mx and My at released joints. Could you please kindly tell me what's wrong?
Thanks in advance.
Below is the input file:
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 04-Sep-07
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER MTON
JOINT COORDINATES
1 0 0 0; 2 3 0 0; 3 0 0 3; 4 3 0 3; 5 0 3 0; 6 3 3 0; 7 0 3 3; 8 3 3 3;
9 0 0 0.5; 10 0.5 0 0.5; 11 0.5 0 0; 12 0 0 1; 13 0.5 0 1; 14 0 0 1.5;
15 0.5 0 1.5; 16 0 0 2; 17 0.5 0 2; 18 0 0 2.5; 19 0.5 0 2.5; 20 0.5 0 3;
21 1 0 0.5; 22 1 0 0; 23 1 0 1; 24 1 0 1.5; 25 1 0 2; 26 1 0 2.5; 27 1 0 3;
28 1.5 0 0.5; 29 1.5 0 0; 30 1.5 0 1; 31 1.5 0 1.5; 32 1.5 0 2; 33 1.5 0 2.5;
34 1.5 0 3; 35 2 0 0.5; 36 2 0 0; 37 2 0 1; 38 2 0 1.5; 39 2 0 2; 40 2 0 2.5;
41 2 0 3; 42 2.5 0 0.5; 43 2.5 0 0; 44 2.5 0 1; 45 2.5 0 1.5; 46 2.5 0 2;
47 2.5 0 2.5; 48 2.5 0 3; 49 3 0 0.5; 50 3 0 1; 51 3 0 1.5; 52 3 0 2;
53 3 0 2.5; 54 0 3 0.5; 55 0.5 3 0.5; 56 0.5 3 0; 57 0 3 1; 58 0.5 3 1;
59 0 3 1.5; 60 0.5 3 1.5; 61 0 3 2; 62 0.5 3 2; 63 0 3 2.5; 64 0.5 3 2.5;
65 0.5 3 3; 66 1 3 0.5; 67 1 3 0; 68 1 3 1; 69 1 3 1.5; 70 1 3 2; 71 1 3 2.5;
72 1 3 3; 73 1.5 3 0.5; 74 1.5 3 0; 75 1.5 3 1; 76 1.5 3 1.5; 77 1.5 3 2;
78 1.5 3 2.5; 79 1.5 3 3; 80 2 3 0.5; 81 2 3 0; 82 2 3 1; 83 2 3 1.5; 84 2 3 2;
85 2 3 2.5; 86 2 3 3; 87 2.5 3 0.5; 88 2.5 3 0; 89 2.5 3 1; 90 2.5 3 1.5;
91 2.5 3 2; 92 2.5 3 2.5; 93 2.5 3 3; 94 3 3 0.5; 95 3 3 1; 96 3 3 1.5;
97 3 3 2; 98 3 3 2.5; 99 0 0.5 2.5; 100 0 0.5 3; 101 0 0.5 2; 102 0 0.5 1.5;
103 0 0.5 1; 104 0 0.5 0.5; 105 0 0.5 0; 106 0 1 2.5; 107 0 1 3; 108 0 1 2;
109 0 1 1.5; 110 0 1 1; 111 0 1 0.5; 112 0 1 0; 113 0 1.5 2.5; 114 0 1.5 3;
115 0 1.5 2; 116 0 1.5 1.5; 117 0 1.5 1; 118 0 1.5 0.5; 119 0 1.5 0;
120 0 2 2.5; 121 0 2 3; 122 0 2 2; 123 0 2 1.5; 124 0 2 1; 125 0 2 0.5;
126 0 2 0; 127 0 2.5 2.5; 128 0 2.5 3; 129 0 2.5 2; 130 0 2.5 1.5; 131 0 2.5 1;
132 0 2.5 0.5; 133 0 2.5 0; 134 3 0.5 0.5; 135 3 0.5 0; 136 3 0.5 1;
137 3 0.5 1.5; 138 3 0.5 2; 139 3 0.5 2.5; 140 3 0.5 3; 141 3 1 0.5; 142 3 1 0;
143 3 1 1; 144 3 1 1.5; 145 3 1 2; 146 3 1 2.5; 147 3 1 3; 148 3 1.5 0.5;
149 3 1.5 0; 150 3 1.5 1; 151 3 1.5 1.5; 152 3 1.5 2; 153 3 1.5 2.5;
154 3 1.5 3; 155 3 2 0.5; 156 3 2 0; 157 3 2 1; 158 3 2 1.5; 159 3 2 2;
160 3 2 2.5; 161 3 2 3; 162 3 2.5 0.5; 163 3 2.5 0; 164 3 2.5 1; 165 3 2.5 1.5;
166 3 2.5 2; 167 3 2.5 2.5; 168 3 2.5 3;
ELEMENT INCIDENCES SHELL
5 1 9 10 11; 6 9 12 13 10; 7 12 14 15 13; 8 14 16 17 15; 9 16 18 19 17;
10 18 3 20 19; 11 11 10 21 22; 12 10 13 23 21; 13 13 15 24 23; 14 15 17 25 24;
15 17 19 26 25; 16 19 20 27 26; 17 22 21 28 29; 18 21 23 30 28; 19 23 24 31 30;
20 24 25 32 31; 21 25 26 33 32; 22 26 27 34 33; 23 29 28 35 36; 24 28 30 37 35;
25 30 31 38 37; 26 31 32 39 38; 27 32 33 40 39; 28 33 34 41 40; 29 36 35 42 43;
30 35 37 44 42; 31 37 38 45 44; 32 38 39 46 45; 33 39 40 47 46; 34 40 41 48 47;
35 43 42 49 2; 36 42 44 50 49; 37 44 45 51 50; 38 45 46 52 51; 39 46 47 53 52;
40 47 48 4 53; 41 5 54 55 56; 42 54 57 58 55; 43 57 59 60 58; 44 59 61 62 60;
45 61 63 64 62; 46 63 7 65 64; 47 56 55 66 67; 48 55 58 68 66; 49 58 60 69 68;
50 60 62 70 69; 51 62 64 71 70; 52 64 65 72 71; 53 67 66 73 74; 54 66 68 75 73;
55 68 69 76 75; 56 69 70 77 76; 57 70 71 78 77; 58 71 72 79 78; 59 74 73 80 81;
60 73 75 82 80; 61 75 76 83 82; 62 76 77 84 83; 63 77 78 85 84; 64 78 79 86 85;
65 81 80 87 88; 66 80 82 89 87; 67 82 83 90 89; 68 83 84 91 90; 69 84 85 92 91;
70 85 86 93 92; 71 88 87 94 6; 72 87 89 95 94; 73 89 90 96 95; 74 90 91 97 96;
75 91 92 98 97; 76 92 93 8 98; 77 3 18 99 100; 78 18 16 101 99;
79 16 14 102 101; 80 14 12 103 102; 81 12 9 104 103; 82 9 1 105 104;
83 100 99 106 107; 84 99 101 108 106; 85 101 102 109 108; 86 102 103 110 109;
87 103 104 111 110; 88 104 105 112 111; 89 107 106 113 114; 90 106 108 115 113;
91 108 109 116 115; 92 109 110 117 116; 93 110 111 118 117; 94 111 112 119 118;
95 114 113 120 121; 96 113 115 122 120; 97 115 116 123 122; 98 116 117 124 123;
99 117 118 125 124; 100 118 119 126 125; 101 121 120 127 128;
102 120 122 129 127; 103 122 123 130 129; 104 123 124 131 130;
105 124 125 132 131; 106 125 126 133 132; 107 128 127 63 7; 108 127 129 61 63;
109 129 130 59 61; 110 130 131 57 59; 111 131 132 54 57; 112 132 133 5 54;
113 2 49 134 135; 114 49 50 136 134; 115 50 51 137 136; 116 51 52 138 137;
117 52 53 139 138; 118 53 4 140 139; 119 135 134 141 142; 120 134 136 143 141;
121 136 137 144 143; 122 137 138 145 144; 123 138 139 146 145;
124 139 140 147 146; 125 142 141 148 149; 126 141 143 150 148;
127 143 144 151 150; 128 144 145 152 151; 129 145 146 153 152;
130 146 147 154 153; 131 149 148 155 156; 132 148 150 157 155;
133 150 151 158 157; 134 151 152 159 158; 135 152 153 160 159;
136 153 154 161 160; 137 156 155 162 163; 138 155 157 164 162;
139 157 158 165 164; 140 158 159 166 165; 141 159 160 167 166;
142 160 161 168 167; 143 163 162 94 6; 144 162 164 95 94; 145 164 165 96 95;
146 165 166 97 96; 147 166 167 98 97; 148 167 168 8 98;
ELEMENT PROPERTY
5 TO 148 THICKNESS 0.4
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2.21467e+006
POISSON 0.17
DENSITY 2.40262
ALPHA 1e-005
DAMP 0.05
END DEFINE MATERIAL
CONSTANTS
MATERIAL CONCRETE ALL
SUPPORTS
5 TO 40 PLATE MAT DIRECT Y SUBGRADE 2000
ELEMENT RELEASE
41 TO 46 J1 MX MY
41 TO 46 J2 MX MY
71 TO 76 J3 MX MY
71 TO 76 J4 MX MY
LOAD 1 LOADTYPE None TITLE DEAD
SELFWEIGHT Y -1
LOAD 2 LOADTYPE None TITLE LIVE
ELEMENT LOAD
41 TO 76 PR -2
LOAD COMB 3 D+L
1 1.0 2 1.0
PERFORM ANALYSIS PRINT ALL
FINISH