宜昌长江铁路大桥桥位桥孔的水文影响因素  

Effects of location and opening size of Yichang Railway Bridge across Yangtze River on hydrological conditions

作　　者：许辉[1] 

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《武汉大学学报（工学版）》2011年第3期302-306,共5页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:50679064)

摘　　要：在跨江桥梁工程设计中,需统筹考虑大桥建设与桥区河段河道、防洪、航道、航运的相互关系,兼顾地质、水文和桥梁结构方面因素,确定合适的桥位、桥跨及墩位,将大桥建设对河道演变、防洪、航道和航运等方面的影响降到最小.以宜昌长江铁路大桥为例,介绍了相关的水文专项研究情况.综合分析表明:宜昌桥主桥墩位置及跨度布置既满足洪水期的通航要求,也满足枯水期的通航要求,并能适应远期航运发展的需要.该实例可为国内其他大型跨江桥梁的设计论证提供参考.In the engineering design of river-crossing bridges,it is required to give overall consideration to the relationships between bridge construction,the river channel with bridge,flood control,navigation channels and shipping,as well as the influencing factors of geological,hydrological and structural aspects.The appropriate selection of bridge,bridge span and pier position leads to minimum effects of bridge construction on the fluvial processes,flood control,navigation channels and shipping,and so on.Taking the Yichang Railway Bridge across the Yangtze River for example,the effects of the location and opening size of this bridge on the hydrological conditions are presented,which concludes that selection of the bridge＇s position and span is reasonable,and not only satisfies the flood control and navigation requirement in flood season,and the demand of the navigation during the low flow season,and also accords with the development of the navigation in the future,which can be referred by the design of other river-crossing bridges in China.

关 键 词：铁路大桥 水文研究 防洪 通航 

分 类 号：U442[建筑科学—桥梁与隧道工程]