越南茶荣沿海港口波浪三维整体物理模型稳定性研究

Stability of 3D wave physical modeling for port in Trà Vinh,Vietnam

三维波浪整体物理模型试验已广泛运用于防波堤工程实践中。三维整体物模试验较传统的波浪断面物理模型而言,对于波浪与结构物的作用有着更加完备的刻画。三维随机波浪整体物理模型试验可量化波浪的浅水变形、折绕射、越浪量及海工结构物三维稳定性。以越南茶荣沿海港口防波堤工程为例,利用1:34.3三维整体波浪物理模型,针对不同波向及重现期波浪条件下防波堤堤头、堤身三维稳定性与防波堤越浪量进行测试研究。试验结果表明:1)防波堤头堤石为5 t、主干为3.5 t时结构布置可靠稳定。2)仅在极端高水位和设计高水位部分组次发生少量越浪或者溅浪。

The three-dimensional wave physical modeling has been widely employed in the breakwater design.Compared with the conventional 2D wave physical model,the 3D model has the merits in full description of the wave-structure interaction.The 3D random wave integral physical model test can quantify the wave shoaling,refraction and diffraction,overtopping amount and 3D stability of coastal structures.Taking the breakwater project of port in TràVinh,Vietnam as an example,a 1:34.3 3D integral wave physical model is used to test and study the 3D stability of the breakwater head and body and overtopping amount of breakwater under different wave directions and return periods.The test results show that:1)The breakwater is reliable and stable when the head of the breakwater is 5 t and the trunk is 3.5 t.2)Only a small amount of overtopping or splashing occurs at the extreme high water level and design high water level.