Study On Vibration-absorption Performance And Design Method Of A New Spherical Bearing

In this paper,a new type of shock-absorbing support with separated functions is designed.The leaf spring element and mild steel element are combined to form a shockabsorbing member,and it is placed in a spherical support for work to achieve shockabsorbing energy consumption.Features.This shock-absorbing energy-consuming component has a simple structure,a clear and clear working mechanism,and is also easy to replace.It can meet the seismic requirements of the project and has a long service life.In this paper,this new type of shock-absorbing energy dissipating component is studied and discussed from the aspects of theoretical analysis,finite element calculation and design method research.The main contents are as follows:(1)According to the working state of the component in the support during earthquake action,determine the corresponding vibration reduction mechanism,energy consumption mechanism and self-reset mechanism of the component,and from the perspective of functional separation,reduce the reduction from the theoretical analysis and finite element calculation Seismic energy dissipation components are designed to meet the needs of actual projects.(2)Use the finite element analysis software ABAQUS to perform parametric analysis on the shock-absorbing energy dissipation components to analyze some structural parameters(such as mild steel cross-sectional size,leaf spring thickness,leaf spring width,etc.)and soft steel materials for shock absorption The influence of the hysteretic characteristics and mechanical properties of components under low-cycle reciprocating loads.According to the calculation results,under the effect of periodic reciprocating load,the soft steel part designed in this paper is easy to enter the stage of plastic energy dissipation,and the energy dissipation characteristics and mechanical properties of the overall member are good,achieving the expected function.(3)Through the analysis and summary of the results of the finite element analysis,some structural parameters(such as the section size of mild steel,the thickness of the leaf spring,the width of the leaf spring,etc.)and the law of the influence of the mild steel material on the energy dissipation members are summarized Research on the design method of seismic energy dissipation components using theoretical mechanics knowledge and rules and regulations.(4)Use the finite element analysis software SAP2000 to verify the performance of the seismic energy dissipation support designed in this paper in actual engineering cases from the aspects of structural natural vibration characteristics,response spectrum analysis and dynamic time history analysis.The analysis of the structure shows that the reduction The seismic energy dissipation support has outstanding shock absorption effect in actual engineering,and is a shock absorption support with excellent performance.