Research And Implementation Of Three-dimensional Simulation Technology Based On Beijing Xizhimen Hub

With modern rapid development of urbanization and increasing intensity of urbanpopulation, the traffic problems have an impact on the daily operation of the citylimits of urban sustainable development capacity and a global problem. Passengertransport planning and construction have become one of the problems of urban trafficinourcountry.Byusingtrafficsimulation,itcaneffectivelyreducethetrafficbuildofthe risk, analyze the causes of traffic congestion and historical data, simulate thetraffic congestion of the site and help make the right traffic management strategy.Therefore, simulation of traffic advantages of its unique has become a traffic-relatedtransport facilities layout planningdepartment a reasonable degreeoftechnical meansof virtual examination of an important. Traffic simulation has played an importantroleinthemoderncitylife.In the process of making Simulation, improvement of three-dimensionalsimulation technology undoubtedly provide a more intuitive visual effects. So itprovides three-dimensional simulationofthevisual andunparalleledvisual effects, sothat a more complete simulation system, which greatly enhances the simulationsystem canbeused,and consequentlyincreasethevalueofthesimulationcapabilitiesof the application. But with more and more users on the use of three-dimensionalsimulation,usersrequirementthree-dimensionalmodelcorrespondingtotheworldofreal-time, interactive requirements of controlled; in three-dimensional simulationspace users more strongly requirement simple human of operation; users have auniversal demand for three-dimensional simulation modeling, on other hand, modelfor different traffic scenarios is needed more urgent. These practical requirementshavebeenfullyconsideredinthisarticle.The subject of science and technology projects from the Ministry of Transportation——Integrated transport hub function and structure of passengerNumerical experimental system. It is China's Ministry of Science and TechnologyNational High Technology Research and Development Program (863 plan) specialissue.Integrated transport hub function and structure of passenger Numericalexperimental system is a transportation hub for the development of simulation andexperiment platform, it includes modeling, two-dimensional simulation, 3Dsimulation, analysis capabilities. Through this system of development and research, itcan transport hub layout of various transport facilities to carry out effectiveassessment of areasonabledegree. It can provide two-dimensional,three-dimensionalsimulationresults,directlyreflectthespecificlocationofthebottleneckoftraffichub,Observe and analyze the reasons for this phenomenon occurs. Transport hub for thedesign can be optimized and improved. Analysis of the final result can be effectivelyreduced abilityto transport hub assemblycauses to help users determine the transporthub of the problem. It also can serve as a decision-support tools users and theoreticalbasis.The author takes over in the medium-term of the software system, and thepreparatory work has been completed by others. The main work of the project is toadd and improve the function, and successfully simulated the experimental scene toscene simulation for the specified on the basis of preliminarywork. This article is forBeijing hub station Xizhimen implementation process of three-dimensionalsimulation.During the development process, the three-dimensional simulation is based ontwo-dimensional simulationofsyncwiththeperspective, and full considerationtothefine degree of simulation scenarios, the simulation scenario the simplicity of layout,character simulation exquisite degree of realistic three-dimensional simulation resultsand other factors, so intuitive and sensitive to show the walking, avoidance and thequeuingprocess in the transport hub, intuitive and accurate reflection of traffic withinthetransportationhubofthewholeprocessofchangeovertime,intuitiveandtargetedto reflect the transportation hub of all local insiders density, intuitive and quickly reflect a transport hub in passenger traffic bottlenecks. The advantages ofthree-dimensional simulation been fully reflected in Integrated transport hub function andstructureofpassengerNumericalexperimentalsystem.Direct3D programs, 3ds Max and other 3D simulation technology integratedwithathree-dimensional simulationsystem inthis article, inthis way, it canavoidthevarious defects in three-dimensional simulation of technology, give full playto all theadvantages of three-dimensional simulation of technology. According to systemrequirements, this work is done with Visual Studio 2005 and DirectX SDK platformand take full advantage of DXUT framework of technology. Thus it greatly increasedthe effectiveness of the realistic three-dimensional simulation. Research anddevelopment of this system for used at low cost three-dimensional simulationtechnology to simulate the real world, it has some practical significance and promotethe value. And the author hope this technology in this field contribute to thedevelopment.