基于斜坡堤圆弧面灯桩结构的波浪力研究  

Study on wave forces based on circular lamp pile structure of sloping breakwater

作　　者：于倩 柯维林[2] 严士常[1] 许凡 刘远超 YU Qian;KE Wei-lin;YAN Shi-chang;XU Fan;LIU Yuan-chao(Key Laboratory of Coastal Disaster and Defense,Ministry of Education,College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China;CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,China)

机构地区：[1]河海大学港口海岸与近海工程学院,海岸灾害及防护教育部重点实验室,江苏南京210098 [2]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《水运工程》2019年第6期26-33,共8页Port & Waterway Engineering

摘　　要：斜坡堤上圆弧面灯桩结构的波浪力研究对防波堤的设计和稳定具有重要意义。通过在波浪水槽内进行物理模型试验,对不同位置波压力随时间的变化过程、波压力沿结构表面分布规律以及当水平力或垂直力最大时各测点的同步波压力分布特性进行分析,再将试验结果与规范直立式胸墙的波浪力计算结果进行对比。结果表明,无掩护部分的波压力主要由冲击压力和缓变压力组成,有掩护部分的波压力表现为缓变压力;从灯塔顶部到上灯桩基础,波压力随相对高度的减小而先增大后减小,当水位超过结构物一定高度,且有块体掩护时,底部波压力近似均匀分布;水平力最大时的最大波压力发生在无块体掩护的灯塔的中下部;半掩护条件下,灯桩结构所受波浪水平力比无掩护条件下小,比全掩护条件下要大;基于海港水文规范公式得出修正系数以及拟合公式,可用于计算斜坡堤上此结构形式的波浪水平力。Studying on the wave force of the circular lamp pile structure of the sloping breakwater is great significance to the design and stability of the breakwater.Based on the physical model tests in a wave flume,we analyze the time variation of wave pressure at different positions,the distribution of wave pressure on the structure surface,and the synchronous wave pressure distribution characteristics at each measuring point when the horizontal force or vertical force is the maximum.We also compare the experimental results of the wave force with the results calculated by the standard about the vertical chest wall.The results show that the wave pressure in the non-shielded part is mainly the combination of the impact pressure and the gradually varying pressure.The wave pressure in the shielded part shows the slowly varying pressure.From the top of the lighthouse to the bottom of the lamp pile foundation,the wave pressure increases first and then decreases with the relative height decreasing.When the water level exceeds a certain height of the structure and the structure is protected by block,the wave pressure at the low part is approximately uniformly distributed,but without protection,the maximum wave pressure occurs at the maximum of horizontal force.When it is partly protected,the wave horizontal force of the lamp pile structure is smaller than that under no protection,but larger than that with a full protection.Based on code of hydrology for sea harbor,the correction coefficient and fitting formula are obtained,which can calculate the wave horizontal force of this structural type on sloping breakwater.

关 键 词：斜坡堤 灯桩结构 波浪力 压力分布 

分 类 号：U656.21[交通运输工程—港口、海岸及近海工程]