Anti-collapse Performance Analysis Of Viscous Damper In RC Frame Structure Based On Incremental Dynamic Analysis

The problem of structural seismic collapse resistance has been highly valued by the engineering researchers. A large number of buildings were damaged by earthquakes in recent years.However the damage is different, such as minor damage, moderate destroyed and relatively serious even collapsed. How to reasonably evaluate the safety margin of structure under earthquake becomes an urgent question to be solved in the forefront of the seismic field. At the same time, The construction vibration control is one of the hot problem within the seismic fortification techniques now. It reduces the seismic response of structure by adding the damping and dissipating the seismic energy. The viscous damper has a broad application foreground because of easy construction, cheap components, and very good shock absorption effect.In this paper, discussing the theory of reducing vibration by dissipating the seismic energy and described the resilience models of viscous damper and the equivalent linear theory on viscous damper, introduced an method of Incremental Dynamic Analysis (IDA) and introduces the collapsed criterion of judgment of the RC frame structure construction in the seismic collapsed simulation. Applying a new evaluation method-CMR (collapse margin ratio)method.Two numerical analysis models are established via Perform-3D analysis software for global collapse resistance capacity evaluation. One is a Viscous Damper in RC Frame Structure and another is a corresponding RC Frame Structure.20ground motion records are chosen for increment dynamic analysis(IDA) on its. the collapse margin ration(CMR)is calculated and structure fragility curve is got. Quantitative analysis of the collapse resistant capacity of structure in different earthquake intensities...