平原河网地区内河航道设计最高通航水位取值

设计最高通航水位取值直接影响跨航道桥梁改建方案。针对平原河网地区跨航道桥梁改建实施难度大的问题,进行桥梁改建案例、典型水位曲线特点、船舶过桥现状、撞桥事故统计数据、内河航道导助航及管理手段的发展等方面的研究,探讨降低设计最高通航水位取值的可能性,并提出按通航保证率进行设计最高通航水位取值,并辅以完善的交通管理系统的方案。该方案可作为导助航体系完善、管理水平较高的平原河网地区设计最高通航水位取值参考。

Designed highest navigable water level of inland channel in plain river network

Designed highest navigable water level has a direct impact on bridge reconstruction scheme.Based on the difficult situation of bridge reconstruction for inland channel in plain river network,we carry out some research on bridge reconstruction cases,characteristic of typical water level curve,current navigation situation of ship going through the bridge,bridge strike accidents,the development of navigation aids and management means in inland waterways,etc.We discuss the possibility of reducing the designed highest navigable water level,and propose a scheme which regards navigable guarantee rate as the base of the designed highest navigable water level,and the scheme is supplemented by a perfect traffic management system.This scheme can be used as a reference to the designed highest navigable water level in the plain river network area,which has a perfect navigation aids system and a high management level.