基于SWAN模型的海宁市尖山段海塘设计波浪要素研究

Research on wave elements in seawall design of Jianshan Section in Haining City based on SWAN model

为了保障尖山段海塘综合整治提升工程顺利实施,采用三重嵌套的SWAN波浪数学模型,研究整治工程实施前、后的海塘塘前波浪场变化。研究表明:海塘西侧由于高程抬升,水深减少,波高也相应减少,但强浪向依然不变;海塘东侧高程基本不变,波高也无明显变化;工程实施后的消浪效果在11%~17%;将数值模型结果与规范中的莆田公式比较,基于工程实际安全考虑,采用波浪数值模型计算结果作为设计波浪要素,为整治工程实施提供数据支撑。

In order to ensure the smooth implementation of Jianshan Section seawall comprehensive regulation and upgrading project,a triple nested SWAN wave mathematical model is used to study the wave field changes before and after the implementation of the regulation project.The results show that the water depth and wave height of the west seawall decrease due to the elevation rise,but the strong wave direction remains unchanged.The elevation of the east side of the seawall is basically unchanged,and the wave height has no obvious change.The results of the numerical model are compared with the Putian formula in the specification.Based on the actual safety considerations of the project,the calculation results of the numerical model are used as the design wave elements to provide strong data support for the implementation of the renovation project.