The Research And Application On Bridge Reinforcement

With the development of national economy,significant growth in traffic volume,traffic density and traffic load increases,in particular the implementation of the transport trailer and container transport, heavy vehicles increasing a considerable portion of the existing road bridge can not meet the use requirements, this is a serious world problem facing.The past 20 years,vigorous development of Chinese road construction,road networks are maturing,gradually reduce the new bridge,built a bridge repair, maintenance,strengthening and transforming the road transport sector has become the focus of the work.The paper focuses on four common methods of strengthening the bridge reinforcement ( carbon fiber reinforced,paste steel reinforcement,prestressing reinforcement,increasing the cross-section reinforcement),introduced the common diseases and causes of the bridge,on the bridge reinforcement methods system of induction,summarize,analyze , refine , put forward the scheme selection principles should be followed.Instance in the reinforcement through the use of finite element analysis software on the three kinds of reinforcement (Stick steel reinforcement,carbon fiber reinforcement,prestressing reinforcement) were analyzed and compared,while taking into account other influencing factors,for bridge strengthening scheme selected for the use of bridge strengthening program in the instance of the application of analysis shows.I hope this bridge strengthening works on the design and construction play a certain role,for future bridge strengthening designed to provide reasonable recommendations.