摘要
本文通过实测资料，分析了工程河段河床演变特性。利用二维κε紊流数学模型，较好地模拟了天然水流运动，计算分析各桥式方案壅水和对下游八卦洲汊道分流比的影响，初步探讨了越江大桥对长江行洪、河势及航行条件的影响。
In this paper, the integrated prototype measured data were compared, the changes and section stability of the Yangtze River at Nanjing branch were analyzed, 2 D κ ε turbulence model are used to simulate natural flow phenomena. The influence of the bridge plans on the backwater and the diversion ratio in the Baota waterway are calculated and analyzed. The flood control and navigation conditions are discussed.
关键词
Κ-Ε紊流模型
壅水
分流比
河床演变
铁路桥
river evolution analysis, κ ε turbulence model, backwater, diversion ratio
