作用在二维浮体结构上的风荷载研究

针对风对结构物的作用问题,现行规范与计算方法虽能较准确估算风的直接作用力,但可能忽视间接作用力而使估算不足。以二维典型浮体结构为研究对象,采用物理模型试验方法,分析静水条件恒定风和2种不同类型谱的随机风作用下的风荷载。结果表明,API谱随机风所产生的作用力大于Davenport谱随机风的作用力;不同时距的平均风速对浮体结构的荷载影响试验结果差异较大,应引起工程设计人员的充分注意。

Study on wind load acting on two-dimensional floating structure

For the problem of the wind load acting on structure,the current codes and calculation methods can accurately estimate the direct force of wind,but they may neglect the indirect force and make the estimation inadequate.Taking the two-dimensional typical floating structure as the research object,we apply the physical model test to analyze the wind load of constant wind and random wind of two different types of spectrum under hydrostatic condition.The results show that the action force produced by API spectrum random wind is greater than that generated by Davenport spectrum random wind.The average wind speed of different time intervals has great impact on the load of the floating body,so it should arouse the great attention of engineering designers.