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阐述了HEC-RAS的基本原理及功能;随着涉水建筑物的增多,河道水流变得复杂,该软件能估算桥、坝等涉水建筑物对河道水位的影响;通过工程实例将HEC-RAS计算结果与伯努利法水面线计算结果相比较,计算结果合理;且通过调整卡口段的设计断面,利用软件在较短的时间内完成多方案的水面线计算分析。
The basic principles and functions of HEC-RAS are expounded. With the increase of wading buildings, the river flow becomes more complicated. The software can estimate the influence of wading structures such as bridges and dams on the water level of the river. Through the example of engineering, The results of RAS calculation are compared with those of Bernoulli method. The calculation results are reasonable. By adjusting the design section of the bayonet section, the software is used to calculate and analyze the water surface of the multi-scheme within a short period of time.