【摘要】 为分析桥梁工程的修建对原河道水文情势的影响,以小龙门大桥工程为例,采用平面二维数学模型,模拟了5 a一遇设计洪水条件下工程修建前后河道内水位和流场分布特征的变化。结果表明,桥梁工程修建后在桥墩附近产生了一定的壅水与流场变化,有局部性的影响。更多还原

【Abstract】 In order to analyze the effect of bridge construction on river hydrological regime,this paper adopts a 2D mathematical model to simulate the water level and flow distribution changes under the five-year design flood event before and after construction of the bridge.Taking the Xiaolongmen bridge project for an example,the results show that the construction of bridge would lead to certain backwater and flow field variation but the impact is mainly near the piers partly.更多还原