Application Of Nonlinear Viscous Fluid Damper To Shock Absorption Design Of New Hospital

With the acceleration of economic development and urbanization,the civil engineering structure is moving toward a higher altitude,a larger span,and a more complex structure.It is followed by strong earthquakes and hurricanes,which will bring even greater social and economic losses,so how to reduce the damage of the structure in the event of a disaster has become a problem that people must solve.Energy dissipation technology is a new technology that is currently being promoted,and has received good feedback in many new projects and reinforcement projects.In this paper,the damping effect of nonlinear viscous dampers in new hospitals is studied.The ETABS software is used to analyze the elastic time history of seismic structures and non-shock structures.The seismic waves use 5 sets of natural waves.2sets of artificial waves.The following conclusions are drawn:1.It can be seen from the energy time history curve of each wave of the shock absorbing structure that the damper dissipates more seismic energy and effectively protects the main structure.Calculated according to the energy-based calculation method,the damper can provide an additional damping ratio of 4% for the structure.2.It can be seen from the inter-layer shearing of the shock absorbing structure and the non-damping structure that the shear force of the structural floor is reduced by about 10-20%after the damper is installed.3.From the structural time history analysis,the shock absorption rate of each layer in the two directions and the 7% damping ratio obtained by CQC analysis are relative to the absorbing ratio of each layer of the 5% damping ratio structure.It can be seen that the shear reduction of each layer of the damping structure is greater than As a result of the 7% damping ratio,it can be considered that the damper can add a 2% damping ratio to the original structure.4.Comparing the displacement angle between the shock absorbing structure and thenon-damping structure layer,it can be found that after the damper is installed,the displacement angle between the structural layers is reduced to a large extent,which meets the specification limit requirements.5.It can be seen from the hysteresis curve of the damper that the shape of the hysteresis loop is full,indicating that the damper works well and has high energy consumption.