Research And Application Of Seismic Isolation Bearings For Village Buildings Based On Waste Tires

Chinese villages and towns are widely distributed and dense,and earthquakes are frequent,most of the village houses have not carried out formal seismic fortification,their seismic performance is poor,earthquakes have become a major threat to the safety of the lives and property of village and town residents.Basic seismic isolation technology can effectively reduce the destructive ability of earthquakes to houses,but due to the high cost of traditional rubber seismic isolation bearings,it is difficult to widely popularize them in village and town buildings.At the same time,waste tires,as chemical products,are very polluting to the environment.Therefore,it is necessary to design a new seismic isolation support(LSTP)based on the village building of waste tires,the structure of the isolation support is designed as a prefabricated component,the finite element model of the seismic isolation support is established by ANSYS finite element and the structural form of the seismic isolation support is optimized,and the seismic isolation model of the village building is established by using ETABS finite element software to analyze the seismic isolation efficiency of the seismic isolation support of waste tyre.The research content of this paper is as follows:(1)According to the building seismic isolation design standards,the structural parameters of the waste tire seismic isolation support are designed,the finite element analysis of the seismic isolation support is carried out by ANSYS software,and the static finite element analysis of the seismic isolation support is carried out by ANSYS according to the national standard of seismic isolation support test method,and the mechanical parameters such as vertical stiffness and horizontal stiffness are calculated according to the theory of mechanical parameters of the seismic isolation support,and the mechanical properties of the seismic isolation support meet the design standards of seismic isolation support with reference to the corresponding test data.(2)Combined with the theory of ultimate performance of seismic isolation supports,on the basis of determining the basic structural parameters of seismic isolation supports,the relationship between the vertical ultimate bearing capacity of the support and the number of combined seismic isolation bodies in the seismic isolation support is obtained,and the horizontal limit performance simulation calculation and analysis of the seismic isolation bearings of different combined seismic isolation bodies is carried out through ANSYS finite elements,and the optimal structural form is selected according to the seismic isolation needs of different buildings.(3)Based on the test results of the seismic isolation support of waste tires and the optimized structural form of the seismic isolation bearing,the framework model was established using PKPM design software to take a three-story frame structure house in a village and town in Jilin Province as the object,and the finite element model of the non-seismic isolation and LSTP seismic isolation houses were established by ETABS,and the typical ground motion under Class II site conditions was selected,and the seismic time history response analysis was carried out,and the self-vibration period,interlayer acceleration,and interlayer acceleration of non-seismic isolation and LSTP seismic isolation structures were compared.interlayer displacement;Aiming at the problem of large deformation of waste tire isolation bearings under seismic action,the finite element analysis of the building with additional damper isolation layer is carried out by ETABS software,and the optimal structure of the additional number of seismic isolation supports and dampers is obtained.