Response Analysis of Liquid Storage Tanks on Ringwall Foundation to Ground Vibration Caused by Falling Weight

In this study, on-site tests were performed to analyze the response characteristics of cylindrical steel structures on the ring wall foundation to landfill ground vibration and provide significant safety precautions and reference values for site management. Vibrations were generated through free fall of the weight, and the vibration source energy was changed by adjusting the fall height of the weight. The ground vibration effect on landfill was analyzed by combining the three-axis measurement data to generate the peak particle velocity (PPV), and the dominant frequency results were obtained using the fast Fourier transform. The analyses of the PPV and dominant frequencies on the concrete pavement (20 cm thick), where the liquid storage tank was located, showed a different area of vulnerability to ground vibration on the tank. We also derived an expression to predict the PPV on the concrete pavement as a function of the vibration energy and the distance from the vibration source. The correlation between the PPV on the pavement and the PPV on the tank wall was analyzed. A reference value for on-site management reflecting the dominant frequency, which is a vibration characteristic value, was recommended.