Abstract
Deformations from high flooding can reach critical proportions, resulting in bridge failures. Accordingly, an improved method for calculating erosion in floodplains in the area affected by the bridge transition has been presented. The mathematical model for the floodplain dependent flow is obtained, based on the assumption of the small particles, the low acceleration of the flow relative to the acceleration of gravity, the general equation for the transport of the heterogeneous flow, and the nonsymmetry equation. The model form of the equations takes into account the constituent forces of resistance of vegetation in the flow and resistance of removal of soil grains during the process of erosion, and initial and boundary conditions for their realization are formed. A sequence for calculating the hydrodynamic characteristics of the flood flux in the area of the bridge transition influence is provided for determining the deformation values on the flood plains. The results of the calculation of the erosion in the underside floodplains of the plain river are presented.
Subject
Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics
Reference7 articles.
1. Sean j. Bennett , John S. Bridge An experimental study of flow, bedload transport and bed topography under conditions of erosion and deposition and comparison with theoretical models / THE Journal of The international association of Sedimetologists, Volume42, Issue1, February 1995, Pages 117-146/ https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-3091.1995.tb01274.x
2. FernandoDe Falco, RaffaeleMele The monitoring of bridges for scour by sonar and sedimetri / NDT & E International Volume 35, Issue 2, March 2002, Pages 117-123, https://www.sciencedirect.com/science/article/abs/pii/S0963869501000317
3. Савенко В.Я., Славинская Е.С. Моделирование процессов развития внутренних течений с учетом анизотропии открытых турбулентных потоков / – К.:НТУ, 2004. – 176 с.
4. Савенко В.Я. Математические модели и методы расчета квазитрехмерных безнапорных потоков. - К.: Техніка, 1995. 184 с.
5. Гришанин К.В. Теория руслового процесса. - М.:Транспорт, 1972. - 216с.