Seismic Responses And Control Method Of Adjacent Liquid Storage Tanks Under Structure-soil-structure Interaction

China has vast land and frequent earthquakes,and its enormous destructive power often causes huge losses to society.Liquid storage tanks are widely used in the petrochemical industry,and in practical applications,they are often arranged in rows with small spacing,which may cause mutual influence under seismic action and even increase the probability of damage to the storage tanks.Earthquakes can lead to structural damage and secondary disasters,and the destruction of such facilities not only causes serious waste of energy,but also leads to secondary disasters such as explosions and environmental pollution.Strengthening the safety of adjacent liquid storage tanks under earthquake action and reducing their probability of damage is of great significance for energy reserves,disaster prevention,emergency response,and post disaster reconstruction.The main research content of this dissertation is as follows:(1)Based on the ADINA program,considering important factors such as liquid solid soil coupling,structure soil structure interaction,material nonlinearity,and viscoelastic boundaries,a refined three-dimensional numerical calculation model for liquid storage tanks with single tank and adjacent tanks is established.The seismic response of the system with different arrangements of single tank and adjacent tanks was compared and studied.The group effect of liquid storage tanks under earthquake action was discussed,and parameter impact studies were conducted.(2)A new method of introducing vibration barrier devices into the foundation between liquid storage tanks for shock absorption control is proposed.Considering important factors such as liquid solid soil coupling,liquid shaking dynamics,and structure soil structure interaction,a refined three-dimensional numerical calculation model for vibration controlled liquid storage tanks is established.The vibration control effect of vibration barrier devices on adjacent liquid storage tanks under earthquake action is discussed,and parameter impact analysis is conducted.(3)A three-dimensional numerical calculation model for adjacent liquid storage tanks with multiple vibration barriers is established,and seismic waves are input from four different directions.The influence of the incident angle of seismic waves on the seismic dynamic response of the liquid storage tanks and the control effect of the vibration barriers is discussed.