Study on Impact Loadings of Flood on Buildings

Based on the one-dimensional Saint-Venant water equation explicit difference scheme, a new explicit difference scheme is deduced to establish the evolutionary routing model of flood. The computational formula about the impact loading of flood model is deduced. The impact experiment of flood on buildings is carried on the large wave-current tank. The heights of water are 0.6, 0.9 and 1.2 meters and the distances between the building and floodgate are 3, 6 and 9 meters respectively. The model scale of buildings is 1:6 and three buildings with different ratios of holes are designed to simulate the buildings at countries and villages. Based on the experimental results, the effects of heights of water, the distances between buildings and floodgate and the ratios of holes on the impacting pressure are investigated. Finally, the numerical results are compared with the experimental results and it shows that the numerical model of impact loading is proper.