Seismic Response Study Of Continuous Beam Bridge

In recent years,with the rapid development of the transportation industry,China has achieved great success in the field of bridge engineering.The significance of bridge engineering as a lifeline,once destroyed in the earthquake,will cause unpredictable losses,and the occurrence of earthquakes is common in China,and the proportion of continuous beam bridges in China is still large.Therefore,it is particularly important to study the response analysis of continuous beam bridge under earthquake action.In this paper,a continuous beam bridge is studied,and the research results have played a certain role in the seismic research of bridges.The main contents of the study are as follows:(1)The common seismic damage of bridges is also studied,and the problems needing attention in earthquake resistance are pointed out.The research status of bridge seismic response at home and abroad is expounded.(2)The basic method for summarizing the seismic response of bridges.For example,static method,reflection spectrum analysis method,time history analysis method,and the like.Based on a continuous beam bridge,a finite element model is established and its natural vibration is analyzed.(3)Seismic response analysis of bridges by response spectrum analysis and linear time history analysis.Under the different load conditions,select some key sections displacement values and internal force values of bridges to compare the results of two different methods..Summarize the response of the bridge under earthquake action.(4)In order to reduce the degree of impact of the bridge on the earthquake,a viscous damper is introduced to analyze the influence degree of the damper parameters on thedamping condition.The damper with the best parameters is selected,and the time-history analysis method is used to compare the key points before and after taking the damping measures.The change in the internal force of the section.Based on the research in this paper,we can further understand the response of continuous beams under earthquake action,and hope to provide a reference for the seismic design of similar bridges.