摘要
长三角地区,特别是浙江北部及宁(波)绍(兴)地区,内河航运发达,河流密布,道路成网,桥梁众多。随着内河航道等级的不断提升,桥梁通航净高成为影响船舶通航的最大制约因素。与之相应,桥梁的改造难度及费用越来越高,于是在航道改造过程中,桥梁改造方案是否合理显得尤为重要。以杭甬运河富恩桥为例,探讨了跨航桥梁整体顶升技术方案,比较了不同改造方案优劣,提出了内河航道改造中对跨航桥梁整体顶升技术的关键要点,为跨航桥梁改造提供有益借鉴。
With the continuous improvement of waterway classification in the area of Yangtze River Delta, such as Northern Zhejiang and Shaoxing-Ningbo, where the inland navigation was highly developed with large amount of inland waterway and over-canal bridges, the navigable clear height under the bridge has become the main constraint of navigation, meanwhile, the cost and difficulty of bridges＇ reconstruction was increasing. It is especially important to waterway renovation project whether the bridges＇ reconstruction method is reasonable or not. Based on the reconstruction project of Fu-en Bridge, this paper elaborated the method how to lift the whole bridge, compared lifting with rebuilding, and analyzed the key points of lifting technique, which is useful and helpful for the future reconstruction project of over-canal bridges.
作者
金跃群
杨扬
JIN Yuequn YANG Yang(Design and Research Institute of Communications, Zhejiang Provincial Planning, Hangzhou 310006, China)
出处
《结构工程师》
北大核心
2016年第4期183-189,共7页
Structural Engineers
关键词
内河航道
桥梁
顶升
改造
inland waterway, bridge, lifting, reconstruction
