斜交桥墩布设防撞装置影响通航研究  

Influence of Anti-collision Devices on Skew Bridge Piers on Navigation

作　　者：余葵[1,2] 孟繁超 刘宪庆 吴威力 毛德涵 YU Kui;MENG Fanchao;LIU Xianqing;WU Weili;MAO Dehan(National Inland Waterway Improvement Engineering Research Center,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Bridge Navigation Safety and Collision Engineering Technology Research Center,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学重庆市桥梁通航安全与防撞工程技术研究中心,重庆400074

出　　处：《水利与建筑工程学报》2021年第5期105-110,共6页Journal of Water Resources and Architectural Engineering

基　　金：重庆英才计划·创新创业示范团队(CQYC20193204)。

摘　　要：随着船舶大型化、航道等级提升以及船撞桥墩事故频发,山区河流通航河段早期建设涉水桥墩存在较多的斜交桥墩,即桥墩与水流方向普遍存在夹角,通过安装防撞装置对该类桥墩进行防护是主要的方式之一。为揭示斜交桥墩布设防撞装置引起阻水特性改变对船舶运动的影响,通过数值分析软件FLUENT建立二维数值分析模型,研究高雷诺数下桥墩设防方式、斜交角、桥墩间距对船舶受力及运动的影响。研究结果表明:斜交角与船舶艏摇力矩成正比;布设防撞装置引起船舶船艏力矩增大,船舶通航所需的安全航行间距增大;设防桥墩与船舶间距在0~18 m(1倍装置宽度)范围内对通航有显著影响。本研究成果对于山区河流的安全通航问题具有一定的参考价值。With the increase in ship size,the increase in the level of waterways and the frequent occurrence of ship collisions with bridge piers,there were many skew bridge piers in the early construction of wading piers in navigable river sections of mountainous rivers,which means there is an angle between the bridge piers and the direction of the water flow. Installing anti-collision devices is one of the main protection ways. In order to reveal the impacts of the change of water blocking characteristics caused by the anti-collision device of the skew bridge piers on the ship motion,a two-dimensional numerical analysis model was established by the numerical analysis software FLUENT to analyze the effects of pier fortification method,skew angle,and pier spacing on the force and movement of ships under high Reynolds number. The research results are as follows. The skew angle is proportional to the ship’s bow moment;the deployment of the anti-collision device causes the ship’s bow moment to increase,and the safe navigation distance required for the navigation of the ship increases. The distance between the fortification pier and the ship is 0 ~ 18 meters( 1 times). The device width has significant impacts on navigation. The results of this research have certain reference value for the safe navigation of mountain rivers.

关 键 词：斜交桥墩 防撞装置 动船模型 艏摇力矩 通航影响 

分 类 号：TV131.2[水利工程—水力学及河流动力学]