摘要
桥群的形成增加了碍航程度,给船舶的正常航行及通航安全带来较大影响。基于概化弯道桥群河道条件,采用船舶操纵运动数值模拟方法,拟定出了概化弯道桥群河段上的桥间距与桥梁净跨间的内在关系。同时考虑实际的河道条件,给出了桥群河段桥间距与桥梁净跨耦合关系的一般形式。利用上述研究成果,分别以四川沱江邓家坝和重庆长江菜园坝桥群河段为例,分析研究了拟建邓家坝大桥桥址与桥跨布设方案的可行性,评估了菜园坝桥群河段的通航环境。
Ship navigation safety will be greatly influenced by the obstruction due to bridge group. Based on generalized meandering river with bridge group, the corresponding relationship between bridge span and distance is confirmed using the ship maneuvering motion simulation method. Considering the actual conditions of the river, the general coupling relationship between the distance and span is obtained. Taking Dengjiaba bridge group of Tuojiang river in Sichuan province for example, the feasibility of the proposed site and span layout scheme of Dengjiaba bridge is proved by the obtained general coupling relationship. Moreover, the navigation condition of Caiyuanba bridge group reach of the Yangtze River is evaluated.
出处
《水运工程》
北大核心
2016年第4期136-140,147,共6页
Port & Waterway Engineering
基金
四川省交通科研项目(2013C13-1)
重庆市教委科学技术研究项目(KJ1400322)
关键词
桥群
桥间距
桥梁净跨
二维水流数学模型
船舶运动数学模型
bridge group
bridge distance
bridge span
2D flow mathematical model
ship motion numerical model
