Water dynamics of the bridge pier of the four-line parallel skew bridge of Rongshan River in Haikou
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Abstract:
For the study of hydrodynamic characteristics of the bridge pier of the four-line parallel skew bridge of Rongshan River in Haikou City and the overall self vibration characteristics of the pier and bridge system under different water levels, FLUENT and ANSYS software were used, based on the DES method, the three-dimensional flow model was established for the four-line skew bridge river channel , the flow field distribution under different flow rate and different oblique angle as well as the self-vibration characteristics of the pier-bridge system under fluid solid coupling was simulated. The results showed that the maximum flow capacity of the four-line parallel skew bridge could reach 400 m3/s, and the bridge had a certain safe distance, with a maximum backwater height of 0.69 m. The natural frequency of the pier-bridge system under the condition of fluid solid coupling was 7.66 Hz, without the risk of resonance with the passing trains.
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