摘要
本文针对海上导管架平台结构的冰激振动问题提出了一种整体隔振方案,通过采用建筑抗震用叠层橡胶支座作为基础隔振元件,对以渤海的JZ20-2MUQ采油平台为基础而设计的1∶25的模型试验平台进行数值仿真分析,模拟了模型平台采用隔振方案后的冰激振动响应。通过对隔振前后平台顶部层的振动位移和加速度的比较和分析,同时兼顾考虑了隔振层的最大相对位移,通过优化算法反过来为模型试验平台和隔振支座参数的设计提供理论指导。
This paper proposed a scheme which solve ice-induced vibration problem of offshore jacket platform via installation of isolator under the whole deck of offshore platform. Steel-rubber bearings which are widely used in architecture engineering against earthquakes are adopted as isolator. Via numerical emulate analysis for a 1∶25 model test structure which is designed based on actual platform JZ20-2MUQ, the vibration behaviors of model platform are obtained after installation of steel-rubber bearing under the deck. By comparatively numerical analysis of displacement and acceleration of isolated model platform and non-isolated model platform, in the mean time taking into account the relative displacement of isolator, this paper adopted an optimal method to offer the model platform and isolator the optimal parameters.
出处
《强度与环境》
2004年第3期12-18,共7页
Structure & Environment Engineering
关键词
海上导管架
平台结构
隔振控制
减振效果
采油平台
vibration isolation
ice-induced vibration
offshore platform
muti-layer steel-rubber bearings
optimal arithmetic
