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Response of offshore towers to strong motion earthquakes
Author(s) -
Penzien J.,
Kaul M. K.
Publication year - 1972
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.4290010106
Subject(s) - ground motion , submarine pipeline , geology , seismology , response spectrum , acceleration , moment (physics) , ergodic theory , structural engineering , geodesy , geotechnical engineering , mathematics , engineering , physics , mathematical analysis , classical mechanics
Presented is a stochastic method of analysis of offshore towers subjected to strong motion earthquakes. A zero mean ergodic Gaussian process of finite duration is used to characterize horizontal ground acceleration and full fluid structure interaction effects are included. Numerical results for four representative deep water towers having heights of 475, 675, 875 and 1075 ft are compared with corresponding results obtained by the response spectrum method of analysis. Particular emphasis is placed on the maximum or extreme values of total transverse shear and total overturning moment. Comparisons are made with code values and the role of ductility is briefly discussed.