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Response of a nuclear power plant on aseismic bearings to horizontally propagating waves
Author(s) -
Wolf John P.,
Obernhuber Pius,
Weber Benedikt
Publication year - 1983
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290110404
Subject(s) - geology , horizontal and vertical , component (thermodynamics) , vertical axis , structural engineering , seismology , geotechnical engineering , mechanics , geometry , physics , engineering , geodesy , mathematics , thermodynamics
The nuclear island of Koeberg with a large basemat, a non‐linear base isolation effective in the horizontal direction only, founded on rock, is analysed for inclined body waves and for a combination of surface and body waves associated with prescribed horizontal and vertical components of the control motion. When compared to vertical incidence, an additional rocking component arises, generated by the horizontally propagating vertical component. As the aseismic bearings do not isolate against this rocking component, the corresponding horizontal response bears comparison with that of a conventional structure. The ratio of the response for horizontally propagating waves and that for vertically incident waves is thus considerably larger for the base‐isolated structure than for a conventional one. However, the actual design incorporating other loading cases is affected much less.