Analysis of jack-up units using a Constrained NewWave methodology

被引：95

作者：

Cassidy, MJ ^{[1
]}

Taylor, RE

Houlsby, GT

机构：

[1] Univ Western Australia, Ctr Offshore Fdn Syst, Crawley, WA 6009, Australia

[2] Univ Oxford, Dept Engn Sci, Oxford OX1 2JD, England

来源：

APPLIED OCEAN RESEARCH | 2001年 / 23卷 / 04期

关键词：

NewWave; Constrained NewWave; jack-up; spudcan foundations; work hardening plasticity; random wave;

D O I：

10.1016/S0141-1187(01)00005-0

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

There is a steadily increasing demand for the use of jack-up units in deeper water and harsher environments. Confidence in their use in these environments requires jack-Lip analysis techniques to reflect accurately the physical processes occurring. This paper is concerned with the models appropriate for the dynamic assessment of jack-ups, with a balanced approach taken in considering the non-linearities in the structure, foundations and wave loading. A work hardening plasticity model for spud-cans on sand is used for the foundation model. The spectral content of wave loading is considered using NewWave theory, and the importance of random wave histories shown by constraining the deterministic NewWaves into a completely random background. A method for determining short-term extreme response statistics for a sea-state using Constrained NewWaves is detailed. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：221 / 234

页数：14

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