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近些年来我国兴建了大量的跨海大桥,波浪力是桥梁基础的重要荷载之一,而基础多采用墩台桩基结构,其中承台尺度较大,关于波浪力计算目前并无统一的计算方法和规范要求,分别采用Morison公式、绕射理论和CFD方法计算不同尺度承台所受波浪力,比较不同方法在计算大尺度承台结构时的适用性,结果表明Morison公式并不适合计算大尺度截断结构,而绕射理论与CFD方法能取得较好的计算结果,特别是结构尺度相对较大时,该研究为桥墩波浪力计算和结构设计提供参考和依据。
In recent years, a large number of cross-sea bridges have been built in our country. The wave force is one of the important loads on the foundation of the bridge, while the foundation is mostly composed of piers and abutments. The scale of the bearing platforms is relatively large. There is no uniform calculation Method and code requirements, Morison’s formula, diffraction theory and CFD method are used to calculate the wave forces on the caps with different scales, and to compare the applicability of different methods in calculating the structure of large-scale caps, the results show that Morison’s formula is not suitable for calculating large scale However, the diffraction theory and the CFD method can get better results. Especially when the structure scale is relatively large, the research provides a reference and basis for the calculation and structural design of the piers.