An Experimental Study of Insufficient Free Board Effect on Fixed-Roof Cylindrical Tank Seismic Loads

Cylindrical tanks are fundamental structures used for the storage of liquids.Sloshing caused by earthquakes in tanks without enough freeboard leads to aliquid impact on the roof of tanks. This study aims to explore the base shearvariation due to insufficient freeboard using experimental and numerical methods.The experimental tests are performed using a cylindrical liquid tank excited byvarious harmonic loads. The impact of some parameters such as the water height totank radius ratio and freeboard on base shear force are investigated by conducting۹۰ tests. Impulsive and convective masses for simplified mass-spring are modifiedin numerical models so that experimental and numerical base shear resultsare consistent. Finally, a simple analytical solution to estimate the reduction ofconvective mass due to insufficient freeboard is suggested and validated usingexperimental results.

کلیدواژه ها:

Liquid Tanks ، Strengthening ، Seismic Behavior ، Numerical Methods