Study On Typical Disease Mechanism And Reinforcement Technology For U-Shaped Abutment

In recent years,with the universal development and widespread use of gravity bridge,the disease has been shown to the world.A large number of bridge platforms have been used in the construction process even during the construction of the phenomenon of cracks and unevenly subsidence.Therefore,this article relying on Jiangxi highway found a contract period of separated overpass abutment,to conduct a comprehensive inspection of the abutment situation investigation and disease characteristics analysis,system research based on the structural mechanics characteristics of gravity abutment structure characteristics,proposed targeted abutment disease treatment plan,and carries on the finite element simulation of the abutment reinforcement method,scientific and reasonable for the future reinforcement gravity type u-shaped abutment to provide the reference.(1)the bridge condition monitoring investigation and analysis of characteristics of diseaseFound in a comprehensive understanding of the kiln bay separated overpass environmental characteristics,traffic characteristics and the bridge structure,on the basis of investigation,the kiln bay find separated overpass abutment disease condition and evaluation of the basic properties of the bridge.The condition monitoring of bridge deck,abutment and other ancillary facilities is monitored through the form of bridge appearance.(2)based on the disease of bridge technical condition mechanism researchAgainst Switzerland for separated overpass technology condition,the kiln bay cracking situation,dislocation of the abutment of the bridge,bearing damage,expansion joint damage and the destruction of the cone slope analyzed the causes of diseases,and puts forward the corresponding Suggestions.(3)the bridge reinforcement scheme and calculation analysisBridge test condition for the second chapter and diseases it analysis,Put forward the reinforcement scheme and construction procedure of the bridge,the finite element simulation analysis was carried out on the structure after reinforcement,with abutment deformation,principal tensile stress and the principal stress,and other indicators as the main parameters are analyzed.(4)The construction measures and the requirements of the separated overpassCombing the abutment reinforcement construction,the main measures and the corresponding construction requirements of preliminary treatment,front wall structure construction,side wall,the ground beam construction and days of beam and column construction details of the handle.On the key link in the process of construction,such as crack treatment,planting bar,curing protection,concrete defects and exposed steel processing and other related problems put forward the constructive Suggestions,construction and maintenance of the abutment related Suggestions were put forward,as in other parts of the gravity of u-shaped abutment reinforcement provides reference and operational custody.