不规则波对透空式建筑物上部结构冲击作用时域分析

对透空式建筑物上部结构的不规则波冲击作用进行了试验研究．试验靶谱是JONSWAP谱，试验中选取的入射波波高H1/3的范围为0．10～0．25m，谱峰周期Tp的范围为1．0～2．0s，结构物底面距静水面的高度s与入射波高H1/3之比的范围为-0．1～0．4．给出了不同试验组次的结构物底面所受波浪冲击压力的统计分析结果，得出结构物底面所受波浪冲击压力的特征值沿结构物底面分布特性．s／H1/3对作用于结构物底面的冲击压力峰值有很大影响，冲击压力峰值最大值出现在s／H1/3=0．1～0．2．

Time-domain analysis of irregular wave slamming on subface of open-piled structures

The results of experimental investigation of irregular wave slamming on structure members with large dimension in the splash zone are presented. The experimental target spectrum is JONSWAP spectrum. In the experiment, the significant wave height H_ (1/3) is in the range from 0.10 m to 0.25 m, and the peak period of spectrum T_ p in the range from 1.0 s to 2.0 s. The ratio of s/H_ (1/3), which refers to the subface level of the structure (s) to the incident wave height (H_ (1/3)), is between (-0.1) and 0.4. The non-dimensional analysis results of the irregular wave impact pressure on the subface of the structure under various case studies are presented. The distribution of the characteristic impact pressure along the underside of the structure is obtained. The influence of different incident wave parameters and relative clearance s/H_ (1/3) on the impact pressure is discussed. The maximum of peak impact pressure occurs at s/H_ (1/3)=0.1~0.2.