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应用FESWMS二维水动力学数值模型,对温榆河机场南线高速公路段拟建桥墩壅水情况进行了模拟。结果表明,50a一遇洪水洪峰流量下,拟建温榆河大桥桥上水位较现状河道抬升达0.19m,且对上游较长河段水位均有影响;拟建桥梁主槽桥墩处流速较建桥前有所增加;高速路桥河段主流位置明显改变。由于高速公路桥对河道行洪安全有明显影响,建议对拟建桥墩河段进行整治。
The two-dimensional hydrodynamic model of FESWMS was used to simulate the water conditions of the proposed pier in the southern expressway of Wenyuhe Airport. The results show that the water level of Wenyu River Bridge to be built is up to 0.19m as compared with that of the current river channel and affects the water level of longer reaches of the upper reaches of the proposed bridge at a flood peak discharge of 50a. Compared with that before the bridge Increased; the mainstream position of the expressway bridge and bridge section obviously changed. As the expressway bridge has obvious influence on flood safety, it is suggested to remediate the bridge section of the proposed bridge pier.