Study On Sideways Collapse Of Structure With Shear Damper

The problem of structural seismic collapse resistance has been highly valued by the engineering researchers.A large number of building 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 on of 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 shear 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 model of shear damper and the equivalent linear theory on shear 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 SAP2000 anslysis software for global collapse resistance capacity evaluation.One is a Shear Damper in RC Frame Structure and another is a corresponding RC Frame Structuer.20 ground 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 defferent earthquake intensities.