Research Article
Oct 1974
Stochastic Seismic Analysis of Yielding Offshore Towers
Authors: Maharaj K. Kaul and Joseph Penzien, M.ASCEAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 100, Issue 5
Abstract
An analytical procedure to determine the stochastic response of inelastic offshore towers to a nonstationary ground motion in a semiclosed form is described. The method is approximate but the solution is obtained without recourse to time-consuming Monte Carlo solution generation techniques. The offshore tower is modeled as a lump mass system and the resulting forces are obtained as a combination of linear and hysteretic forces. A filtered shot noise process is used to represent earthquake ground motion. Nonlinear hydrodynamic drag forces and the structure resisting hysteretic forces are replaced by appropriate linear forms by using equivalent linearization technique. The system response is then immediately obtained from the Kolmogorov-Fokker-Planck equation for the linearized structure system as the solutions of a nonlinear first-order matrix differential equation. To confirm the validity of the method an example problem is solved using this method and the Monte Carlo solution technique.
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Published In
Journal of the Engineering Mechanics Division
Volume 100 • Issue 5 • October 1974
Pages: 1025 - 1038
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Oct 1974
Published online: Feb 3, 2021
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Affiliations
Maharaj K. Kaul
Sr. Engr., EDS Nuclear, Inc., San Francisco, Calif.
Joseph Penzien, M.ASCE
Prof. of Struct. Engrg., Univ. of California, Berkeley, Calif.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.