Emergency Repair Research Of Bridges And Tunnels On Local Lines Combining With Chongqing Local Lines

Natural disasters attack our country frequently,Natureal disasters such asfloods,landslides,earthquakes,etc happen time and time again,causing huge number ofloss to our society economic and the life of the people erery year.the transit lines whichplay as lifelines are offen destroyed in the disasters,bridges and tunnels are at the keystatus in the transit lines,onces be destroyed,the whole lines will fall in jams.the trafficwill be badly affected, and that will cause huge restriction to the flalling rescue.Surveys about the traffic operation are done in this article,obtaining the summaryabout the space and time distribution of disasters threating the bridges and tunnels inChongqing. And a special database was established about the typical representativebridges.the process of emergency response at the emergency situation of bride breakaccording to the characteristics of bridges and tunnels in the main traffic lines inChongqing.evaluation system how to estimate the safety under the situations bridgesand tunnels are damaged is developed;we divide the repair into emergency repair andquick repair according to the time limit of traffic,and then researchs are taken in thematerials and the corresponding methods on how to repair the damiaged bridges andtunnels according to the emergency level.some discussion are introduced about thedemand of the technology characteristics of quick rescue machines;at last takewangzhou as an example to demonstrate how to deal with the sudden traffic failure fromthe humam resources, equipments resources, supplies resources.Research indicates that,geological disasters threat bridges and tunnels of localhighway routes distribut widely,the frequency is high,human activities effect thestability obviously, inorder to deal with the problems we should first takeprevention,then introduce methods according to the environment so that we candecrease the loss to the bridges and tunnels.road management sector should developfeasible response mechanism regarding to the reality beforehand;Establish quickestimate system;take effective means in accordance with the damage;develop advancedmachinerys owning special functions so that can provide support to the emergencycase;store special materials at some specific places.all these means will provideeffective help to the emergency rescue.