| With the development of China’s economy,the scale of urban construction is increasing day by day,and the urban road construction is also entering the peak period.In the past 20 years of work practice,the writer has participated in the design and review of municipal roads in a large number of key projects in Yantai.Through these work,the writer has found some general problems in urban roads.The city road focused on planning and theoretical research for the practice of project planning and design.This article is trying to find a reasonable design method of city road by the analysis and research of the key technical problems of the city road.The key technology of city road design includes the plane and vertical section design,cross section design,intersection planning design,the rationality of these three aspects from the macro control of the city road design and operation,directly affecting the road safety and sustainability.From the design stage,it is divided into planning and engineering design stage.In the planning stage,here are some questions:the planning and urban landform combination is not very reasonable,the engineering design specification is not strictly enforced,and the detailed planning is more extensive.In the engineering design stage,there are problems of inadequate analysis of engineering projects,inadequate analysis of solutions and insufficient understanding of specifications.In this paper,a large number of practical cases were used to analyze the three key technical problems,and some problems about the specification were found out in the planning and design;such as the combination of road plane longitudinal section and planning road network,the combination of road plane longitudinal section with urban drainage;the combination of road cross section with road grade and road function;how to handle the connection between motor vehicles and non-motor vehicles in section and pedestrian road intersection;selection of parameters,the rationality of setting the safety island,and so on.Through these analyses,the guidance about the design of urban road is given,and from the road planning and design point of view,how to establish the people-oriented concept of urban road traffic to give some specific methods. |
