支撑刚度对水平板波浪冲击压力影响

上部结构位于浪溅区及由弹性桩腿支撑的海洋结构物,如海上栈桥和海洋平台等,在恶劣海况下会受到强烈的波浪冲击作用并产生振动响应。通过物理模型实验研究了波浪对三种不同支撑刚度的结构物冲击作用。分析了不同支撑刚度结构物底面冲击压力和冲击力的变化特性。讨论了支撑刚度对结构波浪冲击力的影响,给出了冲击压力和冲击力随相对净空(s/H)和相对板长(B/L)的变化规律。实验分析结果表明:水平板底面波浪冲击压力与冲击力均随弹性支撑刚度K的增大而增大;随相对净空(s/H)的增大先增大后减小;随相对板长(B/L)的增大而减小。

Effects of support stiffness on wave impact pressures of horizontal deck

The superstructures of marine structures supported by the elastic legs located in the splash zone, such as marine trestles and offshore platform, will be subject to violent wave slamming and vibrate consequently during storms. A series of physical model tests are carried out to investigate the wave slamming on the open structures with three kinds of support stiffness. The characteristics of the wave impact pressures and slamming forces due to different support stiffness are analyzed. The influences of elastic support stiffness on wave impact pressures are discussed. The variation relationships between the wave impact pressures and slamming forces and the relative clearance (s/H) and the relative plate length (B/L) are given. The experiment results indicate that the wave impact pressures and slamming forces increase with the growth of the elastic support stiffness; increase firstly then decrease with the growth of the relative clearance (s/H) and decrease with the growth of the relative plate length (B/L).