Experimental Investigation And Analysis Of The Aseismatic Behavior Of The Serial System Of Laminated Rubber Bearing After High Temperature

The scholars,which are confronted with the problem of structural fire resistance and fire damage assessment and repair,have been extensive research about the development course of the fire temperature and internal temperature field of components,the mechanical property and thermal characteristics property of the reinforced concrete under high temperature and after high temperature,the reaction of structural components under high-temperature,the design method for fire-resistant of the component and structure。The stiffness of the building can be withstand the weight of its own, also can be resist outside of natural disasters such as the smaller frequency earthquake.Most of the earthquake disaster is the destruction of structural components,which can not support its own weight,so that the human living space can be destructed,so the base-isolated structure was introduced.Base isolation is setting laminated rubber bearing at the basis of the building structure and the upper structure,which can stopped the transmission of seismic energy,reducing the seismic response,decreasing the seismic damage,and improving the structural safety reliability.The aseismatic behavior of the serial system of laminated rubber bearing is very little theoretical research.In this paper,the theoretical derivation about the temperature field and the thermodynamic analysis about the laminated rubber bearing after the high temperature,the seismic behavior about serial system of laminated rubber bearing after the high-temperature were studied.First,the fire hazard for the human society,the type of fire,the research status at home and abroad about base isolation technology for fire-resistant,the basic theory and boundary conditions about the resistance fire of the building structure,the physical properties and mechanical properties of steel plate at the high temperature,the mechanical properties of steel after high temperature and the physical mechanical properties of rubber were introduced briefly.Secondly,the thermal stress about circular and rectangular laminated rubber bearing after the high temperature was analysis using the finite element software ANSYS,according to the contrast of the displacement and stress about laminated rubber bearing at the different temperatures,the distribution law about displacement and stress can be obtained.The temperature field about the laminated rubber bearing after the high-temperature can be obtained using the heat conduction theory.Then,simulated the mechnical properties of the serial system after high-temperature.finally,the seismic behavior about serial system of laminated rubber bearing after the high-temperature was studied,and the cracking load,ultimate load,hysteresis curve,skeleton curve were also studied;the test results about serial system of laminated rubber bearing can be compared at the condition of have fireproofing and after high temperature.Finally,the conclusion can be obtained and the study about the serial system of laminated rubber bearing after the high-temperature is discussed.