重力式码头高大胸墙结构设计优化探讨

Discussions on design optimization of gravity quay wall with big capping structure

在潮差大的地区,许多大型沉箱码头的胸墙高度超过5m,宽度超过4m。针对这类常见的高大胸墙结构,提出根据使用功能设计不同高度的胸墙的优化方案,即在布置护舷的一个仓格范围内,胸墙维持常规断面,其余仓格的胸墙优化后显著降低高度。对比分析表明,优化方案在减少混凝土用量、缩短胸墙抢低潮施工的时间、节省工程费用等方面具有优势,值得推广应用。

In the areas with a large tidal range,the capping structures of caisson type quay wall often exceed 5 m in height and 4 m in width.An optimization strategy for selecting the capping height based on the service demand is proposed to resolve the problems of big capping structures,i.e.by adopting a regular size only for the configuration in the range of the caisson cells that fenders are installed,while an optimized size for those located elsewhere,the height of the capping structure can be reduced effectively.It is shown by comparison that the optimized scheme of the structure has superiority in saving concrete demand,reducing construction time during lower tide and saving construction cost,and it is worthwhile extending its application.