桥墩扩孔对阿什河流域防洪影响的数值模拟研究
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摘要
桥梁阻水壅高值计算是防洪影响评价的重要组成部分。研究一般的桥梁壅水问题,规范推荐采用经验公式法进行计算;对于河道水力条件比较复杂的情况,宜采用数学模型计算或进行物理模型试验。相比物理模型,数学模型具有投资小、周期短的特点。以阿什河干流道外香坊段河道整治工程为例,运用HEC-RAS软件进行数值模拟研究,分析了桥墩扩孔对河道流域的防洪影响。
The high value calculation of bridge block water is an important part to estimate the impact of flood control. For the study of the general problem of bridge block water, the empirical formula is recommended for specification and calculation. It is suitably to use the mathematical model or the physical model for the calculation and test of the more complicated situations of river hydraulic conditions. Compared with the physical model, the mathematical model has the characteristics of small investment and short period. By taking the Ashe River Daowai Xiangfang Section Regulation Project as an example, the HEC-RAS software is used to carry out the numerical simulation study, and analyze the effect ofpier chamberingon the flood control ofrivers.
The high value calculation of bridge block water is an important part to estimate the impact of flood control. For the study of the general problem of bridge block water, the empirical formula is recommended for specification and calculation. It is suitably to use the mathematical model or the physical model for the calculation and test of the more complicated situations of river hydraulic conditions. Compared with the physical model, the mathematical model has the characteristics of small investment and short period. By taking the Ashe River Daowai Xiangfang Section Regulation Project as an example, the HEC-RAS software is used to carry out the numerical simulation study, and analyze the effect ofpier chamberingon the flood control ofrivers.
引文
[1]US Army Corps of Engineers Institute For Water Resources Hy-drologic Engineering Center.HEC-RAS River Analysis System User's Manual[M].2002.
[2]Seckin G,Haktanir T,Cobaner M,et al.Forecasting backwater through bridge constrictions in Mississippi river basin[J].River Research and Applications,2009,25(3):315-328.
[3]Seckin G,Haktanir T,Knight D W.A simple method for estimating flood flow around bridges[J].Proceedings of the ICE-Water Management,2007,160(4):195-202.
[4]刘洋.几种水面线推算方法的比较[J].人民黄河,2011,33(002):51-53.
[5]赵渭军.Hec-2方法在桥梁壅水水面线计算中的应用[J].浙江水利科技,1994(4):49-54.
[6]管立志,孙旭.浅谈阿什河流域整治工程中应注意的问题[J].水利科技与经济,2012(18):47-48.
[7]毛倩倩,李硕娇,季永兴.阿什河哈尔滨城区段桥墩冲刷计算[J].城市道桥与防洪,2012,31(6):10-13.
[8]陈学剑,潘世虎.HEC-RAS在河道整治工程方案优化中的应用[J].人民黄河,2014(7):199-202.
[2]Seckin G,Haktanir T,Cobaner M,et al.Forecasting backwater through bridge constrictions in Mississippi river basin[J].River Research and Applications,2009,25(3):315-328.
[3]Seckin G,Haktanir T,Knight D W.A simple method for estimating flood flow around bridges[J].Proceedings of the ICE-Water Management,2007,160(4):195-202.
[4]刘洋.几种水面线推算方法的比较[J].人民黄河,2011,33(002):51-53.
[5]赵渭军.Hec-2方法在桥梁壅水水面线计算中的应用[J].浙江水利科技,1994(4):49-54.
[6]管立志,孙旭.浅谈阿什河流域整治工程中应注意的问题[J].水利科技与经济,2012(18):47-48.
[7]毛倩倩,李硕娇,季永兴.阿什河哈尔滨城区段桥墩冲刷计算[J].城市道桥与防洪,2012,31(6):10-13.
[8]陈学剑,潘世虎.HEC-RAS在河道整治工程方案优化中的应用[J].人民黄河,2014(7):199-202.