摘要
在经过率定和验证的长江下游感潮河段大范围二维潮流数学模型上,采用等效阻力法概化了苏通大桥桥墩群,指出运用该方法时需要注意的地方,同时给出了桩群概化的具体步骤,并分析了该方法的运用效果。研究结果表明,等效阻力法概化的桥墩群不会对大范围水动力(水位、流速及分流比)产生影响,仅桩周附近存在微小失真,可为感潮河段类似工程的桥墩群概化提供借鉴。
Based on the calibrated and validated 2-D tidal current numerical model of the large domain in tidal reach of the lower Yangtze River,the equivalent resistance method was applied to simplify the piers group of Sutong Bridge.Some important details and concrete steps about how to use the method were pointed out,and the application effect was analyzed.The research shows that the simplified piers group has no influence on water level,current velocity and division ratio of the large domain,but only near the piers minor distortion is existed. Therefore,the research can provide reference for the piers group simplification of other similar projects.
出处
《水道港口》
2010年第5期357-364,共8页
Journal of Waterway and Harbor
基金
"十一五"国家科技支撑计划(2006BAA01A27-3)
关键词
等效阻力法
感潮河段
桥墩群
概化
数值模拟
equivalent resistance
tidal river section
piers group
simplification
numerical modeling
