Mode Analysis and Study of Sunjiagou Aqueduct

摘要

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 U-shaped aqueduct in different water depth. The calculation result shows that water has a small effect on the vibration mode of aqueduct structure, but has a greater influence on the natural vibration frequency of aqueduct structure; natural vibration frequency of aqueduct structure decreases with the depth deepening. The research results provide the basis for the seismic design and protection of Sunjiagou aqueduct.