Construction And Research Of Micro-trolley Track Bridge

With the number of cars surge sharply in China,traffic congestion has developed from the first-tier cities which include Beijing,Shanghai,Guangzhou to the second-tier cities.And the increasing sections and congestion impose great influence on urban construction and public transportation.At the same time,the number of deaths caused by the roadside and frequent traffic accidents accounted for 23.1% deaths in traffic accidents.Therefore,this essay propose two conceptions about rail-transit forms and make some analysis-checking about application of miniature tramway transportation on urban bridge.The main content is demonstrated as follow:1.Initially,visualize a distributed micro-rail transportation system.Specifically,the degrees of freedom vehicle aim to be limited through the vehicle refitting,which can make cars operate on both roads and rail in order to increase the average speed,traffic volume and prevent from the traffic accident.As for the urban transportation in future,the miniature tramway pattern,similar to the car-sharing mode,is conceived for solving the problem about underutilized rail system and the time-consuming wait on getting in and out.Moreover,propose a concept about transport privatization thereby improving ride comfort and avoid traffic jams.2.Combining the construction and operation of the urban bridge,the simply-supported beams and continuous beams are picked as the research model.Then,make an analysis and check computations on static analysis and dynamic analysis through building models on ANSYS,considering the possibility and security of mini trolley,operation.Then,in consideration of the high speed of mini trolley,make analysis about four kinds of vehicle weights and the dynamic response of the bridge structure,vertical displacement,vertical acceleration on 11 kinds of cars speed.Meanwhile,the vehicle load effect is taken into consideration,for there are many different between the miniature tramway and the common rail transit on operating.3.Miniature trolleys are not only small but also fast.These conclusions on static analysis and dynamic analysis based on the two types of urban bridge illustrates that the dynamic response have slight impact under vehicle load effect,compared with the normal bridges.This conclusion also shows that under the same breadth of bridge section it is possible to improve the traffic volume through increasing the number of track-lanes on the urban bridge.