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建设中的墨西拿海峡大桥是连接西西里岛墨西拿市与意大利本土雷焦卡拉布里亚市的一座跨海大桥,主跨3 300m,建成后将是世界上最大跨度的悬索桥。施工前通过对场地的优化布置,使得各种资源调配更高效,同时采取了一系列的环保措施以减小对环境的冲击。针对锚碇、桥塔基础、钢桥塔、主缆加劲梁的施工,均有相应的技术创新,以保证整个项目的顺利进行。施工期的抗风稳定性是面临的最突出的技术挑战,针对桥塔不同施工阶段的涡激振动研究,确定合适的阻尼器安装时机,同时对加劲梁安装阶段的颤振进行研究,提出相应的解决措施。
The under construction of the Messina Strait Bridge is a sea-crossing bridge connecting Messina, Sicily, with the Italian state of Reggio Calabria, with a main span of 3,300 m and will be the largest span suspension bridge in the world. Prior to the construction site through the optimal layout, making a variety of resource allocation more efficient, while taking a series of environmental measures to reduce the impact on the environment. For the anchorage, the foundation of the tower, the steel tower, the construction of the main cable stiffened beam, there are corresponding technological innovations to ensure the smooth progress of the entire project. Wind stability during construction is the most prominent technical challenge. According to the research of vortex-induced vibration in different construction stages of bridge tower, the proper damper installation timing is determined. At the same time, the flutter during the installation of stiffened beam is studied, The solution.