Study On The Planning Of Urban Local Special Road Network Based Traffic Organization And Simulation Analysis

A considerable proportion of the planners in our country apply the planning index and the material data pattern to the layout of the road network.This way of road network planning is not very effective when facing the complex road network conditions.It can not better cope with the serious challenges facing the road network planning and construction of our country.The flexible road network planning ideas and the diversified road network are the parts of the road network planning.The key to the problem of road network in China.When compiling the road network plan,a considerable proportion of planners in China use the indicators of road network planning and teaching materials and the recommended indicators in the specifications.At the traffic level,the essence of the block system is the more extensive road resources to participate in the urban traffic operation,and promote the coordinated development and effective operation of all kinds of traffic modes.The theory and methods of the small distance and the dense road network to the road network planning are required.In the face of complex construction environment,terrain,landscape,road network conditions and other constraints,in the face of the road network planning technology requirements,flexible road network planning and diversified road network planning methods help to solve the problem.Urbanization and transportation planning in developed countries are preceded by China,and road network cases are abundant.This article seeks for a variety of flexible road network,analyzes its operation principles and traffic organization,and provides reference for our country to solve the road network planning.On the basis of the analysis of the characteristics of the conventional road network and the way of planning,the paper defines the special road network from three aspects of the distance of road network,the form of road layout and the connection of road nodes.The application of the special road network is analyzed,and the terrain barrier area is selected according to the characteristics of the special,functional and regional aspects.The road network case of traffic pressure area,triangle road network area and dry branch connection area.Compared with the domestic and international processing methods under the same circumstances,it is found that the special road network abroad has the characteristics of perfect channelization and flexible organization.According to the compilation system and planning sequence of urban planning in China,the special road network cases are divided into two levels: dry,dry and dry.The function of the special road network in the dry and dry layer is studied in the layout of the road network.It is considered that the small distance dry road has the advantages of the flexible network organization and the advantage of the development of the bus and the development of the land.The triangle dry road can avoid the emergence of the five fork,and it is beneficial to the building protection.In the traffic organization of the special road network on dry and dry level,the exchange method of the position to the left turn lane is adopted to solve the organizational problem of the special road network in dry and dry level,and the simulation method is used to test the running condition of the vehicle under the corresponding traffic organization,and the feasibility of the traffic organization is verified.The model of dry-branch connection in China is studied.Cross connection between dry and tributaries,especially the cross connection of dry branches near dry junctions,is rare in China.The continuous branch has the role of sharing the dry road traffic,promoting the development of public transportation and the residents' short distance travel,and optimizing the layout of land use.The main reason for the construction of continuous branch is to ignore the branch road and the influence of land use.The paper summarizes the law of the running of the motorcade in the green wave co control road network,analyzes the available time gap in the cross branch of the dry road,and obtains the calculation formula.It points out that the possibility of crossing the branch through the reasonable traffic organization,traffic channelization and signal control is found in most cases,and the setting of the branch can not be affected or not affected.It weakly affects the operation efficiency of the dry road.Taking the opening of blocks as an application scenario,the applicability of traversing branches is discussed.This paper has made a positive exploration on the local special road network,aiming at analyzing the feasibility of the simulation of the special road network case operation,and analyzing its advantages over the conventional road network planning and the special circumstances.Special and conventional road network is a relative concept,but the rules of traffic organization behind it are interconnected;it is quite difficult to clearly define special road network,and the organization and type of special road network are numerous.Special road network research is always on the road.Road network planning is associated with traffic demand and transportation organization.It puts forward higher requirements for planners' skills.Traffic simulation provides an effective tool for conception,inspection and expression planning.It is not conducive to the problem of copying,copying,non quantitative analysis and non visual analysis.It is not conducive to the effective solution of the problem.