Separate Single Column Pier Of Continuous Girder Bridge Offset Diseases And Strengthening Methods Research

Modern bridge,single column pier of continuous girder bridge is a very common and important form of bridge structure,the urban overhead,can often be found in the city,highway interchange ramp bridge.Single column pier of continuous girder bridge with good permeability,light structure,bridge vision is open,easy to adapt to the terrain,covers an area of less,lower quantity is small,line fluent,beautiful appearance,etc.But single column pier of continuous girder bridge with the advantages of the above at the same time,inevitably there are some defects,to facilitate passage under the bridge,the diameter of the pier is often limited,this leads to a single column pier transverse stiffness weak question,hard to ensure its stability.And single column pier of continuous beam bridge in cockiness al part often adopt single bearing design,makes the bridge resistive overturning stability is weak,prone to beam body,especially for curved bridge.Therefore,although the single column pier continuous beam around the world have become more widely used,but frequent safety accidents in China.So the relevant departments also told to calculation of single column pier Bridges,trying to identify potential safety hazard.Based on actual project as an example,this paper taking A interchange in A ramp curve of single column pier of the continuous girder bridge based on the problems in the process of construction and operation,the calculation and analysis of single column pier of continuous girder bridge,to review the structure safety,and according to the calculated results,concluded that the curve of single column pier deviation of the main reasons for continuous girder bridge for lateral stiffness of bridge foundation weak and high compressibility of soil thicker.And through calculation and analysis,understand the bridge offset will be extremely unfavorable influence on bridge structure safetyAccording to the result of calculation and analysis,in view of the single column pier of continuous girder bridge offset disease causes,put forward to add collar beam reinforcement method,add the pile cap reinforcement method,composite reinforcement method,increase the pier cross-section reinforcement method,several strengthening treatment methods,such as soil grouting reinforcement method.Through calculation,understand the various methods for deviation disease of bridge reinforcement effect.And the reinforcement effect,economy,practical aspects of analysis it is concluded that the most feasible way of strengthening.According to the result of strengthening analysis,strengthening process,combination with the engineering practice of strengthening the emphases and difficulties in the process of the project,expounds and analysis,provide a reference for future similar projects...