Spar平台环境载荷风洞测试及载荷分析

介绍某桁架式Spar平台风洞环境载荷测试及分析,为国内首次在风洞中开展的Spar平台风、流载荷模型试验。通过在风洞中模拟真实海洋环境,考虑倾角变化对平台载荷的影响,测试Spar平台水上部分风载和水下部分的流载,给出最大风倾覆力矩风向角,确定平台最容易发生危险的关键风向。试验结果表明:水上部分风阻随纵倾角的增大而增大;风倾覆力矩随倾角增大先增大后减小,在纵倾角10°时达到最大值;水下部分只在流向角-15°～15°范围内,流阻随倾斜角度增大而减小,但最大阻力发生在倾斜角为15°时。试验结果可以为Spar平台设计以及性能预报提供参考。

Measurement and analysis of environmental loads on a Truss Spar through model tests in wind tunnel

This paper provides the measurement and analysis of wind and current loads on a Truss Spar through model tests in wind tunnel for the first time in China.By simulating the environment conditions of wind and current in the wind tunnel and considering the effect of sloping angles on the loads,the corresponding wind loads and current loads on the Truss Spar were measured.The critical angle where the largest wind overturn moment happens was decided.The test results show that the wind resistance gets larger as the pitching angle gets larger,but the wind overturn moment,whose peak value appears at the pitching angle of 10 degree,becomes larger firstly and then smaller.It also shows that the current resistance gets larger when the pitching angle gets smaller and the largest one appears at the pitching angle of 15 degree.The test results provide an essential input for the design and performance assessment of the Truss Spar.