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。 Zhoushan Islands has the characteristics of navigable turnouts and navigable vessels, crossing routes, tidal currents and complicated navigable conditions. The determination of navigable routes and navigation clearance required for the construction of bridges is unique. Taking Yuanshan Bridge as an example, on the basis of full analysis of ship navigation data, combined with the mathematical model after the implementation of the bridge and surrounding reclamation project, the tidal flow field data are calculated, compared with multiple schemes and route optimization, and verified by ship simulation test, Bridge navigable grade and the plan of the navigation channel planning in the bridge area. The reasonable navigable clearance standard and layout plan of navigation holes are obtained, which provides important technical support for bridge design.