Earthquake-compliant jacket
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United States of America Patent
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-
Oct 9, 2001
Grant Date -
N/A
app pub date -
Jun 2, 1998
filing date -
Jun 18, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An earthquake-compliant offshore platform for use in regions of strong earthquakes is disclosed in which the natural vibrational period of the jacket structure is preferably in the range of about 4 seconds to about 8 seconds, which is between the primary excitation period of earthquake energy and the primary storm wave period. The earthquake-compliant jacket structure is lighter than a conventional steel battered jacket for the same location and conditions and has a constant cross-section. The vibrational period of the earthquake compliant platform can be tuned by altering structural stiffness or mass.
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