摘要
针对桥梁建设期间工程河段航道发生不利变化的问题,以沪苏通长江公铁大桥主墩沉井施工为例,对比分析施工前、后的实测水文、地形和航道维护量。结果发现深水沉井吸砂作业和沉井引起的河床冲刷是南通水道近期航道淤积和疏浚维护量大幅度增加的直接原因。因此,应在桥墩结构研究阶段提前考虑施工方案对航道条件的不利影响。
In response to the adverse changes in the navigation channel of the project section during the bridge construction,we analyze the measured hydrology,topography,and channel maintenance before and after construction based on the construction of the main pier’s open caisson of Husutong Yangtze River Highway-Railway Bridge. The results show that caissons sand suction operation and riverbed scour are the direct reasons for the recent waterway siltation and substantial increase of maintenance in the Nantong channel. So,the adverse influence of the construction scheme on the channel shall be considered in advance in the early stage of the pier structure study.
作者
李靓亮
LI Liang-liang(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China;China Railway Construction Laboratory of Bridge Engineering,Wuhan 430063,China)
出处
《水运工程》
北大核心
2021年第4期200-205,共6页
Port & Waterway Engineering
基金
中国铁路总公司科研课题(N2018G033)
中国铁建科研课题(2018-B16)。
关键词
桥梁
深水沉井
航道条件
航道维护
bridge
deep water caisson
channel condition
channel maintenance
