G325国道九江大桥修复工程结构耐久性设计与技术措施

Durability Design and Technical Measures of Jiujiang Bridge Rehabilitation Project of G325 National Highway

为了确保九江大桥工程达到100年设计使用年限,根据潮湿环境进行相应的钢结构及混凝土结构耐久性研究和设计。结合当前的研究成果,对钢结构和混凝土结构耐久性设计方法进行介绍。并详细阐述了提高其耐久性的措施,同时对钢结构中钢主梁、斜拉索及混凝土结构中桥面板、桥塔等组件的防腐措施分别进行介绍,为同类桥梁耐久性设计提供一定的参考。

For the purpose of making sure that Jiujiang Bridge could achieve the designed service life of 100 years,the durability of the steel and concrete structures in wet environment is researched and designed.The methods of the durability design are introduced according the current research results.In addition,the measures of improving the durability are elaborated in detail.Meanwhile,the anticorrosion measures of the steel structures（such as steel beams,stayed cables and so on） and the concrete structures（such as the beam slab,the towers and so on） are introduced separately,in order to supply reference for the similar projects.