ABSTRACT

An offshore structure is operated in an ocean wave environment that is stochastic in nature. Essential knowledge of ocean wave mechanics is practically important when it comes to the reliability of the structure. This paper summarised the numerical formulation involved in representing the ocean wave which will provide interaction effect in the design load of offshore structural response. Mechanism of wave load involved the formulation of wave spectra, ocean wave theory, water particles kinematics above sea water level, and the evaluation of wave force. Several formulations introduced by previous researchers for each process of wave load mechanism are discussed. At the end of this study, a good understanding of the estimated wave loads-induced responses will be discovered in terms of the selected ocean wave modelling. In application perspective, the calculated offshore structural responses would be utilised as the design load (structural responses) in structural reliability analysis of offshore platforms.

摘要

海上结构在本质上是随机的海浪环境中运行。当涉及到结构的可靠性时，海浪力学的基本知识实际上很重要。本文总结了表示海浪所涉及的数值公式，这将在近海结构响应的设计载荷中提供相互作用效应。波浪载荷的机理涉及波浪谱的制定、海浪理论、海平面以上的水粒子运动学和波浪力的评估。讨论了先前研究人员针对波浪载荷机制的每个过程引入的几种公式。在本研究结束时，将根据所选的海浪模型来很好地理解估计的波浪载荷引起的响应。从应用角度来看，