Environmental Engineering Reference
In-Depth Information
Determining the equivalent mass
[12] annex F
Example:
prestressed concrete wind turbine structure, hub height 130m (see
Section 5.2)
G
j
F
j
2
[kN]
z
j
F
j
2
[m]
Node
z
j
[m]
D
z
j
[m]
G
j
[kN]
F
j
D
36
130.174
0.148
1120.00
1.0000
1120.00
0.1480
35
129.878
2.163
2330.00
0.9954
2308.80
2.1433
34
125.848
2.015
21.30
0.9344
18.60
1.7593
34
125.848
1.312
51.33
0.9344
44.82
1.1455
33
123.224
1.312
52.49
0.8957
42.11
1.0525
33
123.224
1.275
32.00
0.8957
25.67
1.0229
32
120.674
1.275
32.72
0.8588
24.13
0.9405
32
120.674
0.750
311.02
0.8588
229.41
0.5532
31
119.174
1.250
518.36
0.8375
363.62
0.8768
30
118.174
2.087
301.19
0.8235
204.24
1.4152
29
115.000
3.787
546.53
0.7797
332.22
2.3020
28
110.600
4.400
634.99
0.7209
330.00
2.2866
27
106.200
4.400
634.99
0.6644
280.32
1.9424
26
101.800
4.400
634.99
0.6103
236.48
1.6386
25
97.400
3.625
523.15
0.5584
163.12
1.1303
24
94.550
1.425
205.65
0.5260
56.91
0.3943
24
94.550
0.525
174.42
0.5260
48.26
0.1453
23
93.500
0.775
257.47
0.5144
68.12
0.2050
22
93.000
2.450
445.94
0.5088
115.46
0.6343
21
88.600
4.400
800.87
0.4616
170.63
0.9374
20
84.200
4.400
800.87
0.4166
139.01
0.7637
19
79.800
4.400
800.87
0.3740
112.01
0.6154
18
75.400
4.400
800.87
0.3336
89.14
0.4897
17
71.000
4.400
800.87
0.2956
69.97
0.3844
16
66.600
4.400
800.87
0.2598
54.07
0.2971
15
62.200
4.400
816.42
0.2264
41.84
0.2255
