Analysis And Treatments For Distress Of Road & Bridge Transition Section On Mountainous Highways

The distress of road & bridge transition section impacts on highway safety, comfort and economy of operation, causing enormous economic losses and adverse social impact.The paper through investigated about transition section txtween bridge abutment and embankment in Chongqing,Sichuan ,Shanxi, summing up the destroy mode are roadbed slippage with whole, forming step between roadlxd and bridge abutment, road surface depressed,slab rupture, difference gradient between roadbed and slab, difference subside and crack in roadbed on end of slab. This paper further investigation the bridge damaged in Wenchuan earthquake, through the investigation ,finding that road & bridge transition section is the vulnerable parts , Likely to cause damage to the bridge in the earthquake.On this basis, The paper analysised the settlement Respectively, when located Slab and Slab withou. This paper summarizes the causes of uneven settlement,proposes the control of the transition section of the standard settlement, and gives the calculationmethod of differential settlement and treatment length.Giving some treatment method about ground base, sub grade, road and all of them, all the work I do have some reference worthiness for the jump disease at bridge abutment on highway.In addition, according to settlement characteristics and construction features, This paper presents a rational arrangement of construction process of the method.Systematic construction control From pre-construction, construction, after construction,in order to Prevent the distress of road & bridge transition section . With Actual construction,the Paper describes the grouting method has better results to Larger settlement of Bridge Foundation.