Seismic Safety Review of Gravity Dam Based on Finite Element Method
Table 2
Calculation results of natural vibration characteristics under different working conditions.
Order number
Normal storage water level with water condition
Anhydrous conditions
Frequency (Hz)
Natural vibration period (s)
Mass participation factors
Frequency (Hz)
Natural vibration period (s)
Mass participation factors
-direction
-direction
-direction
-direction
1
7.532
0.133
1.95
0.20
8.341
0.120
1.96
0.26
2
13.849
0.072
-0.37
1.45
14.023
0.071
-0.28
1.35
3
16.406
0.061
-1.34
-0.77
17.482
0.057
-1.41
-0.56
4
28.795
0.035
0.67
0.29
30.182
0.033
0.59
0.32
5
38.250
0.026
0.05
-0.32
40.949
0.024
0.21
-0.41
Note: due to the two-dimensional finite element model used in the calculation, the calculated results can only reflect the vibration along the river and in the vertical direction.
