Effect of vertical seismic load on shear-bending buckling strength of thin cylindrical shells
- Hitachi, Ltd., Tuchiura, Ibaraki (Japan). Mechanical Engineering Research Lab.
- Hitachi, Ltd., Hitachi, Ibaraki (Japan). Hitachi Works
- Central Research Inst. of Electric Power Industry, Abiko, Chiba (Japan)
- Univ. of Tokyo (Japan). Dept. of Architecture
The main vessels of Fast Breeder Reactors (FBR) are cylindrical structures containing liquid, and have to be thin-walled in order to withstand severe thermal condition. One of the most critical factors in the design of earthquake-resistant FBRs is the buckling strength of the cylinder part of the reactor vessel. In order to investigate various non-linear response characteristics, including buckling, of thin cylindrical shells under vertical and horizontal seismic motion, pseudo-dynamic experiments and non-linear response simulation analysis is performed. It is confirmed that buckling is caused mainly by horizontal seismic loads, and that vertical seismic loads reduce the lateral load-carrying capacity of cylinders and amplify response displacement for a given horizontal seismic load. To evaluate the amplification of non-linear horizontal responses due to vertical input motions, the authors define a response amplification factor, which is calculated from floor response spectra of seismic waves.
- OSTI ID:
- 170340
- Report Number(s):
- CONF-950740--; ISBN 0-7918-1343-6
- Country of Publication:
- United States
- Language:
- English
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