Three-dimensional finite element simulative analysis on reinforced concrete bifurcation pipe of hydropower station

Universal finite element calculation software is adopted in this paper, three-dimensional finite element simulative analysis on reinforced concrete bifurcation pipe of Luojiao River hydropower station is proceeded in construction and operating process. Considering eight combination working conditions of reinforced concrete bifurcation pipe in calculation process, stress distribution rules of bifurcation pipe and surrounding rock are worked out, deriving maximum stress and location of reinforced concrete bifurcation pipe at different working condition. Stress variation rules of reinforced concrete bifurcation pipe are solving when wall thickness and bifurcation angle are different, stress variation conditions of surrounding rock are analysed in different calculation point. Analysis results provide some references for design and construction of reinforced concrete bifurcation pipe.