水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
6期
9-13
,共5页
克什米大桥%HEC-RAS模型%壅水%河道水面线
剋什米大橋%HEC-RAS模型%壅水%河道水麵線
극십미대교%HEC-RAS모형%옹수%하도수면선
Keshimi Bridge%HEC - RAS model%backwater%river water surface line
以克什米大桥的壅水计算为例，利用 HEC － RAS 模型基于桥梁壅水计算的基本原理与方法模拟了100 a 一遇以及10 a 一遇设计洪水频率下建桥前后的河道水面线，进而求得桥梁阻水壅高值、过流面积及水流流速。通过对 HEC － RAS 模拟结果与 Yarnell 经验公式计算结果进行比较，发现水位壅高值相差不大。因此，HEC － RAS 模型对于桥梁阻水壅高的计算可靠，便于分析，可在设计工作中推广应用。
以剋什米大橋的壅水計算為例，利用 HEC － RAS 模型基于橋樑壅水計算的基本原理與方法模擬瞭100 a 一遇以及10 a 一遇設計洪水頻率下建橋前後的河道水麵線，進而求得橋樑阻水壅高值、過流麵積及水流流速。通過對 HEC － RAS 模擬結果與 Yarnell 經驗公式計算結果進行比較，髮現水位壅高值相差不大。因此，HEC － RAS 模型對于橋樑阻水壅高的計算可靠，便于分析，可在設計工作中推廣應用。
이극십미대교적옹수계산위례，이용 HEC － RAS 모형기우교량옹수계산적기본원리여방법모의료100 a 일우이급10 a 일우설계홍수빈솔하건교전후적하도수면선，진이구득교량조수옹고치、과류면적급수류류속。통과대 HEC － RAS 모의결과여 Yarnell 경험공식계산결과진행비교，발현수위옹고치상차불대。인차，HEC － RAS 모형대우교량조수옹고적계산가고，편우분석，가재설계공작중추엄응용。
Taking the calculation of Keshimi Bridge backwater as an example ,the river water surface lines before and af-ter the construction of the brigde were simulated under different scenarios of frequency of flood events ,including once in 100 years and 10 years .By using the basic principles and the main methods of HEC - RAS model ,the backwater height , flow area and flow velocity were calculated .And then the results of HEC - RAS model were compared with that of Yarnell formula ,the values of backwater height were similar .Accordingly ,the application of HEC - RAS model in calculating the backwater height is fairly reliable ,and the results obtained through this software can be analyzed easily ,therefore it is recommended for the designing of engineering projects .
