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.
出处
《城市道桥与防洪》
2016年第6期184-187,18,共4页
Urban Roads Bridges & Flood Control
关键词
数值模拟
桥梁壅水
防洪影响
HEC-RAS
numerical simulation
bridge block water
impact on flood control
