Interchange Project Type-selection And Design Near The Traffic Police Department In Ulaanbaatar City

Road grade separation can be divided into separate interchange and interchange section.As an important category of road traffic facilities,interchange section is different from the at-grade intersection,roads of the interchange section is not on the same plane but connected by ramp.In this way,contradictory between the control of access and the necessary access requirements can be solved.This traffic organization type can achieve a fast traffic conversion and a good urban road landscape.Type selection of interchange is a very important process before detailed design phase.Type selection should first figure out the traffic demand of cross roads,grasp the topography and terrain conditions in the region,study the project implementation conditions and scale of investment as well as benefits,focusing on engineering combined with factors such as safety,environmental protection and social impact,through the scientific method of evaluation,finalization of its programmes.The most critical thing during the design of interchange ramp is plane and vertical geometric design of cross section ramps,cross section through ramp that link to form an organic whole,so it can be link to form an whole.In order to really achieve the purpose of the interchange design: to provide a good,safe and continuous road condition,provides easy access to connecting roads to traffic conversion.The interchange project near the traffic police department in UlaanBaatar City is used as engineering background in the paper.Studying on the impact of buildings,railways and the power supply,and intersecting traffic organized chaos and turning traffic characteristics,overcoming cultural differences,differences in standard negative factors,in-depth analysis of regional conditions of terrain and situation of construction and urban planning,to select the type of interchange and the detailed design.Engineering companies undertake a lot of overseas projects in recent years,including the interchange project.Through studying on type selection and designprocess in the interchange project near the traffic police department in UlaanBaatar City can draw some experience on doing similar projects have some significance.