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The wave load characteristics of a deep-water vertical breakwater with a posterior wave wall were summarized and analyzed, the wave pressure theory of the Chinese code, the modified Goda formula and the Sanflou simplified formula were used for calculate, the calculation is compared with the wave pressure test results of section physical models and local integral physical models, and the differences were analyzed. It is proposed that when the relative water depth is relatively large, using the recommended formula of Chinese code can more reasonably simulate the wave pressure curve, and suggestions are made for the selection of Chinese code wave pressure calculation methods. A new wave pressure calculation method is recommended for the wave pressure analysis of posterior wave walls. It is recommended to use this method when there are no wave crossing requirements at the top of the breakwater and the mooring stability of the harbour basin needs to be improved, which can improve the structural forces. [ABSTRACT FROM AUTHOR]

A project is located in a relatively backward and isolated region of an island country in the Pacific Ocean and it is planned to build a fixed navigation aid structure. On the one hand, higher international standards are adopted for the design based on the stringent requirements of the consultants; on the other hand, the design scheme is restricted by various construction conditions such as lifting weight and length of components and excavation depth. After comparisons of multiple schemes, a high-strength steel pole + expanded concrete foundation scheme is innovatively adopted for the pile foundation of the navigation aids. For the first time, high-strength structural steel is applied to the foundation of port engineering navigation facilities, meeting the strict requirements of the consultants and the construction restrictions. At the same time, the traditional mechanical connection technology for steel structures is applied to the foundation structure of harbor engineering, providing reference for similar projects. [ABSTRACT FROM AUTHOR]