论文部分内容阅读
为了提高主缆结构的耐久性,润扬大桥首次在国内引进了日本的主缆除湿系统新技术,通过将干燥空气送入主缆,使干空气在主缆内流动,降低主缆内空气湿度,从而防止钢丝锈蚀。文章重点介绍了润扬大桥主缆除湿系统的设计,包括送气压力、气流量等参数的选取、除湿系统工作流程、以及与主缆除湿系统相配套的主缆外防护设计等。润扬大桥以及国外一些大跨悬索桥的实践证明,主缆除湿系统使主缆内部处于干燥状态,从而有效防止了主缆内部的锈蚀,延长了主缆的使用寿命,是保证主缆结构耐久性的一个行之有效的方法。
In order to improve the durability of the main cable structure, Runyang Bridge introduced for the first time a new technology of main cable dehumidification system in Japan by sending dry air into the main cable, allowing the dry air to flow in the main cable and reducing the air humidity in the main cable , Thus preventing wire rusting. The article mainly introduces the design of the main cable dehumidification system of Runyang Bridge, including the selection of parameters such as air supply pressure and air flow, the working process of the dehumidification system and the main cable protection design matched with the main cable dehumidification system. The practice of Runyang Bridge and some large-span suspension bridges abroad proves that the main cable dehumidification system keeps the inside of the main cable in a dry state, thereby effectively preventing the corrosion of the main cable and prolonging the service life of the main cable so as to ensure the durability of the main cable structure An effective method.