阿什河哈尔滨城区段桥墩冲刷计算

Scour Calculation of Bridge Pier in Harbin Urban Section of Ashen River

桥梁墩台冲刷会大大影响桥梁基础的稳定,威胁桥梁自身安全。该文在简要分析国内外桥墩冲刷研究的基础上,对桥梁一般冲刷和局部冲刷的计算方法进行介绍。根据阿什河哈尔滨城区段河道水文、水流、泥沙、地质特征和桥梁参数,选择了包达尔可夫公式对影响河道行洪较大且等级较高的公路桥梁和铁路桥梁进行桥墩冲刷计算。最后,根据计算结果对不同桥梁提出扩孔和桥墩防护措施建议。

The scour of bridge pier will greatly affect the stability of the bridge foundation and threaten the safety of bridge. The paper briefly analyzes and studies the bridge scour at home and abroad, and introduces the calculation methods of general scour and local scour of bridge. According to the hydrology, flow, sediment and geological characteristics and the bridge parameters of Ashen River in Harbin Urban Area, Bauerdakov formula is selected to calculate the pier scour of highway bridge and railway bridge with the higher grades, which greatly affect the flood flowing. Based on the calculation results, the paper puts forward the proposals of span extension and pier protective measures for the different bridges.