CAJ | 학술논문

为了评价涉水桥梁建设对河道防洪的影响，采用基于非结构化网格系统的有限体积法，构建了一个河道水流平面二维流场数值模拟模型，用于模拟不同洪水频次条件下桥梁所处河道的平面二维流场，以便获取桥梁建设前后详细的水位、流速及其变化情况，为涉水桥梁规划、设计及河道行洪安全提供技术支撑。通过实例应用与分析，检验了模型对含涉水桥梁河道平面二维流场的模拟能力。结果表明：本文构建的河道平面水流数值模拟模型能够有效地应用于涉水桥梁的防洪影响评价，计算精度高、结果可靠，具有较高的实际应用价值。
위료평개섭수교량건설대하도방홍적영향，채용기우비결구화망격계통적유한체적법，구건료일개하도수류평면이유류장수치모의모형，용우모의불동홍수빈차조건하교량소처하도적평면이유류장，이편획취교량건설전후상세적수위、류속급기변화정황，위섭수교량규화、설계급하도행홍안전제공기술지탱。통과실례응용여분석，검험료모형대함섭수교량하도평면이유류장적모의능력。결과표명：본문구건적하도평면수류수치모의모형능구유효지응용우섭수교량적방홍영향평개，계산정도고、결과가고，구유교고적실제응용개치。
To evaluate the influence of a wading bridge to the river flood control, the finite volume method based on unstructured network system is used to build a two-dimensional flow field numerical simulation model. It is used to simulate the two-dimensional flow field in the river under different frequencies of flood and get the water lever, flow velocity and how they change after building the bridge. It can supply technical support for planning and design of the wading bridge and the safety of river flood. By application and analysis of a living example, the capacity to simulate the two-dimensional flow field containing a wading bridge is examined. It turns out that plane water flow numerical simulation model built by this paper can be effectively applicated to evaluate the influence of a wading bridge to the river flood control. The calculation accuracy is high and the result is reliable. It has a high value for practical application.