中长周期波下防波堤导航灯基础波浪力计算方法

Wave force calculation method for breakwater beacon foundation under action of medium-long period wave

作为防波堤导航灯的基础,其所处位置一般为整个码头工程中波浪条件最为恶劣的区域,而导航灯基础又兼具防浪墙及独立墩柱的双重特性,因此其波浪力的计算较为复杂。基于实际工程项目,通过中外不同规范、手册对防波堤导航灯基础波浪力计算方法进行对比分析,并结合物模试验结果,提出在中长周期波作用下,为保证导航灯基础的稳定并留有一定富余,建议其波浪力采用Morison公式进行计算,同时需采用Martin公式对波浪力计算结果进行复核。分析成果可为类似项目及国内规范修订提供参考。

As the foundation of the breakwater beacon,it is usually located at the part of jetty project,where the natural condition is abominable.The beacon foundation has double characteristics of wave wall and independent pile,so the wave force calculation for beacon foundation is quite complicated.Based on the practical engineering,we adopt different specifications and handbooks at home and abroad in the analysis of wave force calculation method for breakwater beacon foundation.Combining with model test result,we propose a recommended wave force calculation method for breakwater beacon foundation under the action of medium-long period wave.To ensure the stability of breakwater beacon foundation and also keep some surplus,we suggest that Morison equation should be adopted for wave force calculation,and Martin equation should be adopted for rechecking the calculation results.The analysis results in this paper can provide a certain references for the similar jetty projects and also for the domestic code revising.