Dynamic characteristic analysis of fuyang river aqueduct

Dynamic characteristic analysis of aqueduct structure is the foundation of the seismic response analysis and seismic design, includes the calculation and analysis of natural vibration frequency and main vibration mode. The natural vibration frequency not only is the index of aqueduct structure rigidity, but also is the basis of identifying whether the aqueduct structure resonance occur. This paper mainly adopts the finite element analysis software ANSYS to calculate and analyze the dynamic characteristic of aqueduct structure, using added mass method to deal with interaction between water and aqueduct wall, and get the natural vibration frequency and main vibration mode of the rectangular aqueduct in different water depth, the research results provide the basis for the seismic design and protection of aqueduct.