钢管混凝土组合平台抗冰弹塑性分析

ICE-INDUCED ELASTIC-PLASTIC ANALYSIS OF NOVEL CONCRETE-FILLED STEEL JACKET OFFSHORE COMPOSITE STRUCTURE PLATFORM

海洋平台是海洋石油开采的主要方式,但是在海中经常会受到海冰破坏,造成巨大的经济损失以及人员伤亡。本文以渤海JZ20-2海洋平台为模型,发展了钢管混凝土导管架海洋组合结构平台体系,利用大型有限元软件ABAQUS模拟海冰对海洋平台作用,通过对海洋平台应力分布情况,对平台进行弹塑性分析,模拟出海洋平台在极端罕遇冰力作用下海洋平台的破坏方式。通过模拟得出钢管混凝土组合结构体系平台可以有效减少导管架海洋平台的应力,钢管混凝土导管架组合结构平台在极端冰力作用下控制振动效果较好且造价较低。

Offshore platforms are the primary structure style for marine petroleum exploitation. During the service period, it often suffers from sea ice, resulting in huge economic losses and casualties. In this paper, Bohai JZ20-2 offshore platform was taken as example and the concrete-filled steel jacket off- shore composite structure platform was developed. Then, we performed an analysis of elastic-plastic model of anti-ice vibration by using the finite element software ABAQUS. The novel concrete-filled steel jacket offshore platform composite structure has been proposed to discuss the energy dissipation by stress distribution under extreme rare ice forces. The results show that the novel concrete-filled steel jacket off- shore platform composite structure can effectively reduce the stress of jacket platform, and concrete-filled steel jacket offshore composite structure platforms have a vibration control effect and a low cost.