Research On The Measurement Method Of Internal Force And Deformation Of Seismic Isolation Rubber Bearings For Buildings

As an important device of seismic isolation structure of building foundation,the realtime measurement and monitoring of internal forces and deformation of seismic isolation rubber bearings is of great significance for real-time evaluation of the seismic performance of the overall structure and ensuring the safety of buildings and structures.In addition,the measured data can also provide valuable reference for the design,construction and maintenance of seismic isolation structures,which is helpful to improve the economic efficiency and reliability of engineering projects.In this paper,a new method for measuring the internal force and deformation of seismic isolation rubber support is proposed,and the overall structure design of the sensor is carried out,and a new decoupling method is trial-produced.The main research work of this paper is as follows:(1)The problems of existing measurement methods of building seismic isolation rubber bearings at home and abroad are sorted out and analyzed,which provides a literature basis for considering the use of new monitoring methods,new highperformance seismic isolation rubber support monitoring materials and sensor structure design.(2)The finite element analysis method is used to realize the numerical simulation of the compression shear performance of the building seismic isolation rubber bearing,and the characteristics of the compression shear deformation and internal force change of the rubber are obtained,which provides a basis for the selection of sensors,the design of the overall structure and the design of the decoupled structure.(3)The overall mechanical design,electronic measurement and decoupling design of the internal force and deformation monitoring sensor of the building seismic isolation rubber support were completed.Preliminary quasi-static experiments were carried out,and the layout of the sensor,structural design and control parameters of the data acquisition system were preliminarily verified and determined.(4)The numerical simulation analysis and comparison of the test results were carried out,which provided a reference for further optimizing and improving the internal force and deformation monitoring scheme of the seismic isolation rubber support,and improving the accuracy and reliability of the measured data.