CAJ | 학술논문

目前的抗冰导管架平台结构设计主要是考虑极限冰力引起的破坏,尚未形成基于动冰力响应分析的结构设计.为了更好研究冰荷载、冰激振动机理以及提出合理的概念设计,冰荷载下抗冰导管架结构的动力特性分析是十分必要的.基于现场冰与导管架结构相互作用的多年观测以及数值模拟研究,分析渤海辽东湾典型导管架结构在交变冰力作用下的动力特性,提出了适于冰荷载研究与抗冰导管架结构概念设计、分析的简化力学模型,解释柔性抗冰导管架结构动力效应显著的原因.
목전적항빙도관가평태결구설계주요시고필겁한빙력인기적파배,상미형성기우동빙력향응분석적결구설계.위료경호연구빙하재、빙격진동궤리이급제출합리적개념설계,빙하재하항빙도관가결구적동력특성분석시십분필요적.기우현장빙여도관가결구상호작용적다년관측이급수치모의연구,분석발해료동만전형도관가결구재교변빙력작용하적동력특성,제출료괄우빙하재연구여항빙도관가결구개념설계、분석적간화역학모형,해석유성항빙도관가결구동력효응현저적원인.
The oil and natural gas resources of Bohai Bay in China mainly consist of margin al oil fields, and the ice force is the dominant environmental force for the off shose structures. At present, the design of ice-resistant structures focuses on how to endure an extreme force. No practical dynamical ice force model or design code is available and no failure mode analyses of ice-resistant jacket structures are made. In order to build the practical dynamic ice force model to know the mechanics of the ice vibration, and to give the reasonable conception design, and based on the field monitoring data and numerical simulation of oil platforms in Bohai Gulf, dynamic characteristics analysis of ice-resistant jacket platforms is made in the paper. The paper also presents a simplified mechanical model and explains the reason why the dynamic effect of the ice-resistant jacket structure is significant.