有无正倒三角形结构平台的动态分析对比

针对严寒地区海冰对海洋导管架平台结构冲击造成的危害,提出一种新型抗冰正倒三角形简易导管架平台。这种平台由正三角形抗冰结构、倒三角形抗冰结构、铁皮、保护桩、主导管架和支撑桩组成。应用SACS计算软件,采用Maattanen的自激振动理论模型对新型葵花101平台和旧平台的动态响应、基底剪力和力矩等性能数据做了模拟对比分析。分析结果表明,新型正倒三角形结构是一种较好的抗冰结构形式,可有效地防止冰力对平台的冲击,保护平台的安全。

Dynamic analysis and contrast of platforms with and without regular and inverted triangle structures

For the damage of offshore guide pipe platform structure caused by the strike of offshore ice in chilly area, a novel anti-ice simple guide pipe platform with regular and inverted triangle is put forward. The platform is made up of regular triangle anti-ice structure, inverted triangle anti-ice structure, sheet iron, protecting stake, main guide pipe support and supporting stake. With the help of SACS software, the Maattanen self-excited vibration theoretical mode is used to simulate, analyze and contrast the novel Sunflower platform 101 with the old platform in terms of dynamic response, base bottom shearing force and moment. The results show that the novel regular and inverted triangle structure is a good anti-ice one, which can effectively prevent the shock of ice force on the platform and protect the safety of the platform.