摘要
因青岛市重庆路加宽改造和下游增设新的斜交桥,导致此处白沙河河道过水面积减小,桥前壅水叠加。由于斜交桥桥前壅水计算关系的复杂性,现有规范尚无简便计算关系,为分析改建的斜交桥梁对白沙河河道行洪影响,本文建立了平面二维水流数学模型,并应用该模型对大桥改建后工程所在河段50年一遇洪水下水位和流速等的变化进行了计算,最后对改建的白沙河大桥给白沙河带来的行洪影响进行了评价。
Because of Chongqing Road located in Qingdao being widen and adding a new skew bridge in its downstream,this leaded to wetted areas reduction and backwater superposition before the bridge.Due to the complexity of the calculation relationship with the backwater before the skew bridge,there was no simple calculation relationship in the existing specifications.In order to analyze the influence of flood discharge in the new skew bridge of the Baisha River,this paper established the two-dimensional flow model,and applied the model to calculate the change of the water level and velocity in the location of the project after the bridge rebuilding for the 50-year return period flood.Finally,this paper evaluated the influence of the Baisha River triggered by the new bridge.
出处
《海洋湖沼通报》
CSCD
北大核心
2017年第3期38-44,共7页
Transactions of Oceanology and Limnology
关键词
青岛
白沙河
斜交桥
河道
壅水
二维水流数学模型
Qingdao
Baisha River
the skew bridge
the river
backwater
the two-dimensional flow model
