Science and Technology of Nuclear Installations / 2018 / Article / Tab 2

Research Article

Benefits of Seismic Isolation for Nuclear Structures Subjected to Severe Earthquake

Table 2

Frequency and eigenmode.

Mode [Hz]Modal shapeFis [Hz]Modal shape

15.91 “cantilever” mode in z direction0.497 “cantilever” mode in z direction
26.24 “cantilever” mode in x direction0.498 “cantilever” mode in x direction
310.09 “cantilever” mode in x direction1.386Torsion around y axis
412.14 “cantilever” mode in z direction6.21 “cantilever” mode in x direction
512.31Torsion around z axis6.89 “cantilever” mode in z direction
613.49Vertical10.19Torsion around z axis
714.45Vertical13.08Vertical
814.45Shell bending mode around y axis13.50Vertical
915.05Shell bending mode around y axis13.86Shell Bending mode around y axis
1015.22Shell Bending mode around the y-axis14.83Shell Bending mode around the y-axis

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