Research On Application Of Seismic Isolation Bearings In Slab Girder Bridge

Bridge engineering is an important part of the route project,once the destruction of the entire traffic route may be paralyzed,many areas of China is located in the seismic zone,the earthquake is often a fatal damage to the bridge,and board bridge as an important part of the route bridge,if not To pay attention to the inevitable impact on the national economy.The use of seismic isolation bearings is a more mature technology to deal with earthquakes in China.Therefore,this paper mainly applies the lead-core isolation rubber to the beam girder bridge,and through the finite element analysis,the conclusion is drawn.Due to the previous bridge design work,the application of lead rubber bearing more level,the real income is also better,but less detailed analysis of its details.Therefore,this paper has carried on the research and analysis,the analysis result better reflects the superiority of the isolation technology.Furthermore,in order to ensure the safety of the structure in the earthquake,the comparison of its parameters and the comparison of the different calculation results provide a good reference for the correlation analysis method.In this paper,the paper analyzes the seismic strength of the beam bridge,including the following:1.Based on the board girder bridge engineering,the seismic analysis and research are carried out.2.Analyze and check the results by means of multi-vibration response spectrum method,linear time course method and nonlinear time course method.And the relative displacement of the support and the calculation of the bearing are analyzed and studied in detail.The internal forces of the bridge are calculated,the internal force of the pier,the pier strength checking,the pier bottom section bending capacity checking,the bearing relative displacement and the bearing checking.3.Through the analysis of the results of the corresponding research results,and put forward constructive comments and suggestions.