连云港某无围堰通航构筑物设计要点

为保障沿海海湾区域游艇通航、水体交换需要等，常需新建船闸或设置通航孔等通航构筑物。随着近年海洋生态环保力度加大，用海指标越加紧张，传统的大围堰干地施工工艺越来越不能适应新的形势。结合连云港连云新城基础工程，针对用海受限、自然条件恶劣、地质条件差以及工期紧张等复杂条件，开展结构选型、止水防渗等关键技术研究，提出装配式预制闸室设计技术、装配式翼墙设计技术等，较好地解决了相关的技术难题，可为相关工程的设计和施工提供借鉴。

Key points of design for navigable structure without cofferdam in Lianyungang

To ensure the navigation of yachts and water exchange in coastal areas, it is often necessary to build new locks or set up navigable structures such as navigable holes.With the intensification of marine ecological and environmental protection in recent years, the use of sea indicators has become more and more tense, and the traditional construction technology of large cofferdams on dry land is increasingly unable to adapt to the new situation.For this reason, this paper combines the basic engineering of Lianyun New City, and conducts research on key technologies such as structure selection, water and seepage prevention in view of the complex situations such as limited sea use, harsh natural conditions, riprap foundations and tight construction periods, and the design technology of prefabricated gate chamber and prefabricated wing wall are proposed, which can solve the relevant technical problems well and provide references for the design and construction of related projects.