Dynamic Response Analysis Of Silo-frame Structure With Isolation Bearing

With the rapid development of chemical industry,the use of silo-frame is increasing gradually.The silo-frame has the characteristics of high center of gravity,large load,poor overall stability and poor local stability,etc.,and it is very easy to be destroyed under the earthquake action.As one of the most important industrial structures,it is very important to study the seismic performance of silo-frame under earthquake in order to slow down its large-scale damage.The main contents of the study are as follows:1.Using ANSYS finite element software to establish the silo-frame finite element model,based on modal analysis and co MParison with known experiments,to verify the correctness of the model.The silo-frame isolation structure model was established,and the position of isolation bearing was optimized.2.The mode decomposition response spectrum method and time-history analysis method are used to calculate and analyze the data of stress,displacement and strain of the structure under different working conditions.The variation range of analysis data shows that the time-history analysis method is more accurate than the spectral analysis calculation.3.The lead rubber bearing is used to study the seismic response of the original structure and the isolation structure,such as stress and displacement,under different working conditions of empty and full warehouse,and to analyze the influence of isolation treatment on the seismic capacity of the silo-frame structure.4.Change the isolation bearing related parameters,such as isolation bearing equivalent horizontal stiffness,yield force,and so on,calculate overall structure under seismic action of stress,displacement,interlayer displacement Angle shift change law of related parameters,such as observation and data analysis results known as isolation bearing equivalent horizontal stiffness and yield increase,structural horizontal displacement and the stress are reduced.Through dynamic response analysis,it is judged that the weak parts of the structure appear at the frame column feet and the corner points of the second floor,and reinforcement measures can be taken.