Comparison And Research On The Method For The Reinforcement Of Bridge Structures

Driven by the rapid and sustainable development of our country’s economy, transportation plays a more and more important role in our national economy, especially highway and bridge. However,the security of bridge is not optimistic because of many reasons, such as high desity vehicles and more heavy vehicles. In our country, most of roads and bridges have reached a lifetime of service in terms of design and poor quality of construction and maintenance,serious overloading are also the main reasons.This literary work introduces the normal concrete means of fastening like increasing section surface, pasting steel iron, carbon fastening and so on. Summary it systematically summarizes and anylizes the the noral means to fasten the bridge and the normal ruls we should follow,also describes the common damage ways to bridge. Next we emphasize carton fastening technology’s present situation and development process.This article selects bridge piers for the main research object,we research different carbon fastening ways and effects by OpenSEES liner software.Analysis methods include the following, I sincerely hope that some points from the passage can give some reasonable advices on the design for bridge fastening.(1)The analysis result of dynamic analysis method can reveal the seismic response of the structure really and then analyze the reinforcement effect by comparing the displacement value of pier’s top under seism action.(2)Pushover method is a static elastic-plastic way which is used to evaluate structural seismic performance. This method avoids the complicated nonlinear dynamic analysis and has better accuracy. This study compares the structural performance by pushover method that applying concentrated force.(3)Hysteretic curve indicates deformation characteristic and rigidity degeneration under cyclic loading, and responses the plastic deformation capability by the area of hysteresis loop.