Analysis On The Real Cause And Maintenance Method Of Bridge Deck Deviation Of Curved Girder

In recent years the rapid development of urban construction in our country,then produce a large amount of construction waste,construction adopted landfill site is limited,many units took the construction trash under the viaduct.In poor geological conditions,therefore,many parts of thick silt,it is very easy to occur the viaduct bridge caused by bridge deck,piers,pile foundation pile soil deviation phenomenon,seriously affect the bridge structure and the use of safety.So far,there have been several bridge pile soil lead to deviation or crack of bridge pile foundation accident,such as dredging port lianyungang highway interchange,wuhan three loop wild zhi lake overpass,etc.Wuxi some interchange ramp of reinforced concrete continuous curved beam bridge opened to traffic after 6 years,because of the pier one a large number of pile soil,the bridge offset,seriously affect the bridge safety.Combining with the engineering example,the continuous curved girder bridge opened to traffic after the operation due to deviation of the deck occur around the bridge pier pile load were studied.Through the analysis on the stability of the pier near the pile soil and pile foundation in the heap of the deformation and stress distribution under the theoretical calculation analysis,found that induce deviation occur bridge pier was the main cause of unilateral lots of pile soil.Bearing disease also have certain influence to bridge offset.According to the result of the bridge deck deviation causes analysis,study and formulate rectification and reinforcement scheme,for calculating the reinforcement design.In the analysis and comparison multipoint pusher and concentrated pushing method on the basis of the advantages and disadvantages of the combination with the engineering actual situation,put forward using reaction system on bridge deck centrally pusher correction method.From late for reinforcing action observation,bridge deck has been restored to shift the former position,satisfies the requirement of bridge normal use.Reinforcement to traffic more than four years after rectifying,bridge deck deviation phenomenon has not been found,Bridges used in good condition.Research on bridge caused by pile load deviation correction and strengthening measures have important engineering practical significance,and has reference significance for similar projects.