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High-rise Based on Substructure Technique
The following example shows a 17-floor high-rise, which was
calculated as an entire system for a dynamic analysis. For this
reason the floor slabs were discretized relatively roughly. A much
finer division for a statistical analysis would have been possible
without an appreciable increase in the calculation time, as the
number of global nodes would not have increased. The substructural
division was done by assigning each floor slab or vertical element
of a floor to one substructure. The numbering is illustrated in the
figure.
Information Log
The following information log from the substructurization shows
that, except for substructure 25, the information can be condensed
into small work units. The data for the entire system clearly shows
the advantage of substructuring. The required memory for the
calculation of a load case is 130 MB in this application.
MAKEUP OF THE ENTIRE SYSTEM
| Nodes: |
6597 |
| Elements: |
7019 |
| Max. bandwidth: |
2184 |
| Number of unknowns: |
39,582 |
| Stiffness matrix: |
429.5 MB |
MAKEUP OF THE SUBSTRUCTURES
Sub-
structure |
local
nodes |
global
nodes |
Ele-
ments |
Band-
width |
Stiffness
matrix |
| 10 |
115 |
50 |
146 |
84 |
1.7 MB |
| 15 |
198 |
100 |
243 |
150 |
3.7 MB |
| 20 |
115 |
50 |
146 |
84 |
1.7 MB |
| 25 |
561 |
100 |
617 |
300 |
13.0 MB |
| 30 |
115 |
50 |
146 |
84 |
1.7 MB |
| 35 |
198 |
100 |
243 |
150 |
4.0 MB |
| 40 |
115 |
50 |
146 |
84 |
1.7 MB |
| 45 |
198 |
100 |
243 |
150 |
3.7 MB |
| 50 |
115 |
50 |
146 |
84 |
1.7 MB |
| 55 |
198 |
100 |
243 |
150 |
3.7 MB |
| 60 |
115 |
50 |
146 |
84 |
1.7 MB |
| 65 |
198 |
100 |
243 |
150 |
3.7 MB |
| 70 |
115 |
50 |
146 |
84 |
1.7 MB |
| 75 |
198 |
100 |
243 |
150 |
3.7 MB |
| 80 |
115 |
50 |
146 |
84 |
1.7 MB |
| 85 |
198 |
100 |
243 |
150 |
3.7 MB |
| 90 |
115 |
50 |
146 |
84 |
1.7 MB |
| 95 |
198 |
100 |
243 |
150 |
3.7 MB |
| 100 |
115 |
50 |
146 |
84 |
1.7 MB |
| 105 |
198 |
100 |
243 |
150 |
3.7 MB |
| 110 |
115 |
50 |
146 |
84 |
1.7 MB |
| 115 |
198 |
100 |
243 |
150 |
3.7 MB |
| 120 |
115 |
50 |
146 |
84 |
1.7 MB |
| 125 |
198 |
100 |
243 |
150 |
3.7 MB |
| 130 |
115 |
50 |
146 |
84 |
1.7 MB |
| 135 |
198 |
100 |
243 |
150 |
3.7 MB |
| 140 |
115 |
50 |
146 |
84 |
1.7 MB |
| 145 |
198 |
100 |
243 |
150 |
3.7 MB |
| 150 |
115 |
50 |
146 |
84 |
1.7 MB |
| 155 |
198 |
100 |
243 |
150 |
3.7 MB |
| 160 |
115 |
50 |
146 |
84 |
1.7 MB |
| 165 |
198 |
82 |
234 |
150 |
3.5 MB |
| 170 |
73 |
41 |
98 |
60 |
936.4 KB |
| 175 |
198 |
82 |
234 |
150 |
3.5 MB |
| 180 |
73 |
41 |
98 |
60 |
936.4 KB |
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