Numerical Analysis of Dynamic Response of Radial Gate Under Action of Landslide Surge
Reservoir landslide is a common geological hazard,and the surge induced by slide body after entering the reservoir may seriously threaten the stability of the gate structure.Aiming at the dynamic response of steel radial gate un-der the action of landslide surge,taking a deep-hole radial service gate as an example,the landslide surge process was simulated through the self-made finite element program.The calculated hydrodynamic pressure of the landslide surge was converted into the node load of the gate,and the dynamic response of the gate was obtained based on the dynamic time-history analysis method.Combined with the static calculation results of the gate,a comparative analysis was carried out.The results show that under the action of landslide surge,the stress response of the rear flange of the main beam and the vertical beam are the largest,and the displacement response of the supporting arm is the largest among the components of the gate.Compared with the landslide surge at the normal water level,the landslide surge at the dead water level has a greater impact on the displacement and stress responses of the gate structure.
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