The Study Of Construction Organization Plan At Special Site Of Quannan Highway About Reconstruction And Expansion

In contemporary society, the economy of our country is flourishing with a high pace. Most trunk highway of national road network which was built in early stage mainly consists of two way four lanes. Overall, the technical standard was relatively two low to satisfy the demand of increasing vehicles continuously, which can’t promote the development of economy. It has been a serious problem that we are faced with low traffic capacity、congestion of vehicles and frequent accidents. Thus, there is indeed a need for us to improve technical standard and traffic capacity in reconstruction and expansion of highway.Now, because the highway slowly can’t satisfy the requirement of traffic capacity with the development of economy, so it is a hot research problem to study the reconstruction and expansion of highway. Further more, the site of reconstruction such as the location of interchange and bridge is a special location for us to select, therefore, transportation organization design based on the construction of special site in reconstruction becomes the focus of research. Account for these backgrounds and condition, this thesis takes transportation organization design of highway reconstruction and expansion from Quanzhou to Nanning in Guangxi province for example and provides a transportation organization design plan. It was hoped to improve the research of highway reconstruction and expansion project. The following points are the main job of project:(1)The thesis gives a introduction for the engineering situation of Quannan highway from Liuzhou to Nanning. It analyses the research background、necessity of studying of project and so on.Via data investigation, it draws a conclusion for the research status of highway reconstruction and expansion in domestic and overseas.(2)The author analyzed and concluded the road network status in area of influence from many aspects such as the ratio of vehicle pattern、the number of vehicle and so on. Then it gave a detailed analysis for transportation circumstance of main road and shunted road.(3)Based on the theoretic support of gravity model and Follett method. after traffic capacity 、 induced traffic capacity and restrained traffic capacity was taken into account,author predicted the OD investigation in all kinds of time quantum and the flow of main road and shunted road.(4)The thesis provided some typical transportation organization plan in construction areas for interchange of A pattern、B pattern、double horn、Y pattern(or T pattern)and so on.Then it studied the transportation organization design of special sites such as transit section、main bridge and crossroad bridge.At last, by analyzing the advantages and disadvantages of all plans, it got a suitable plan for use.