斯里兰卡港口城海域施工期波浪场数值计算

Numerical calculation of wave field during construction process in the sea area of Port City,Sri Lanka

斯里兰卡港口城项目通过吹填造陆为城市建设提供用地,施工期内需要使用大量的挖泥船、交通船、货船等,因此需要进行施工期的波浪场模拟,评估波浪对工程船舶的影响。文中基于GFS海面风场数据以及GEBCO水深数据,将海浪数值模型WaveWatch Ⅲ和SWAN进行多层嵌套,建立了适合斯里兰卡港口城区域的波浪场的数值模拟系统,并通过与实测数据对比对该系统进行验证。基于该系统对港口城施工区域处于不同施工阶段的波浪场进行了数值分析,得到了典型船舶施工地点波高、周期、波向在整个施工期内的变化规律。为近岸海域波浪场数值计算提供了一种有效的方法,为合理地安排工程船舶作业窗口期、提高施工效率提供了参考依据。

The Sri Lankan Port City project provides land for urban construction through land reclamation,a large number of dredgers,traffic vessels,and cargo ships are employed during the construction process.Therefore,it is necessary to simulate the wave field during the construction process to evaluate the influence of waves on engineering ships.Based on GFS sea surface wind field data and GEBCO water depth data,the wave numerical models WaveWatch Ⅲ and SWAN were nested in multiple layers to establish a numerical simulation system suitable for wave field in the Port City area of Sri Lanka.The system was verified by comparing with the measured data.Based on this system,numerical analysis was conducted on the wave field in the Port City construction area at different construction stages.The trend of wave height,period and direction in the whole construction process of typical construction site was obtained.This paper provides an effective method for the numerical simulation of wave fields in nearshore waters,and provides an important reference basis for the reasonable arrangement of engineering ship operation window and the improvement of construction efficiency.