岛礁海域桥区航道规划及通航净空尺度的确定方法

舟山群岛海域具有通航岔道及通航船型多、航线交叉、潮流流态及通航条件复杂等特点,建设桥梁所需的航道及通航净空尺度确定方法有其独特性。以鱼山大桥为例,在充分分析船舶通航数据的基础上,结合桥梁、周边围垦工程实施后的数学模型计算潮流场数据,经多方案比选和航线优化,并采用船舶模拟试验验证,确定桥梁通航等级和桥区航道规划方案,得出合理的通航净空尺度和通航孔布置方案,为桥梁设计提供重要的技术支持。

Method for planning of bridge channel and determining navigation clearance scale in reef waters

Zhoushan Archipelago sea area has the complicated characteristics,such as many traffic crossings and navigable ship types,route crossing,complex tide flow and navigation condition.The method for planning bridge channel and determining navigation clearance scale is unique in this sea area.Taking Yushan Bridge as an example,we fully analyze the ship navigation data,and combine tidal current data by mathematics model of bridge construction and reclamation project.Through multi scheme comparison and route optimization,we apply ship simulation test,determine the navigable grade of bridge and the channel for bridge area,obtain and reasonable navigation clearance scale and layout of navigation hole.We provide important technical support for the design of bridges.