For the very large floating structure (VLFS) which is deployed near seashores, islands and reefs, the encounter wave conditions are always extremely complex. Traditional methods using homogeneous wave environment conditions cannot be applied for the analysis. In order to provide references for the further development of numerical methods, this paper reports an experimental study on responses of an 8-module VLFS under three different encounter wave conditions. The wave heights, accelerations, motions and connector loads of VLFS in three test schemes are obtained and analyzed. The comparative results show that the inhomogeneous wave conditions have an essential influence on the responses of VLFS. Especially for the connector loads, the values in the inhomogeneous wave conditions increase a lot compared with the other two test schemes. It indicates the traditional numerical methods using homogeneous wave field may not guarantee a safe design of VLFS and its connectors in the complicated wave environments.

对于部署在海滨，岛屿和礁石附近的超大型浮动结构（VLFS），遭遇波的情况总是极为复杂。使用均质波环境条件的传统方法不能用于分析。为了为数值方法的进一步发展提供参考，本文报道了在三种不同的遭遇波条件下对8模量VLFS响应的实验研究。获得并分析了三种测试方案中VLFS的波高，加速度，运动和连接器载荷。比较结果表明，非均匀波条件对VLFS的响应有本质的影响。特别是对于连接器负载，与其他两种测试方案相比，非均匀波条件下的值增加了很多。