Study On Route Scheme Of Hangzhou-Changxing Expressway At Feasibility Study Stage

Design speed of the selected projects is the focus of the feasibility study stage, to be based on the forecast traffic and terrain conditions, the network function of the economic and social development and regional situation, not only in engineering technology to compare and evaluate the national economy And project finance two comprehensive evaluation of the selection.The project was designed speed of 120km/h and 100km/h on the selection of the relatively level of service, 120km/h design speed than the design speed is 100km/h better level of services, corresponding to the volume of traffic, 100km/h design speed of the service level has been close to the maximum level of two services, and the use of 120km/ h design speed, their level of service to ensure that in two and a certain well-off; comparison in engineering technology, the design speed of 120km/h better indicator of alignment, better ensure traffic safety and comfort; Although the use of 120km/h speed the design standards, the higher the project cost 228 million yuan, but only their total project cost of 3. 85 percent, the national economy Evaluation and financial evaluation analysis shows that the two design speed of the internal rate of return and risk-resistance capability, and other economic indicators are quite basic. Therefore, improving highway level of service, improving efficiency in the use of funds and make full use of the road corridors with resources point of view, the item the design speed of 120km/h.Line to be selected in accordance with the programme of "safety, environmental protection, comfort, harmony," the concept of the technical indicators, the project cost, environmental protection and other areas to conduct in-depth comparative study, while also building programme along with regional economic development planning coordinated , Selected the optimal solution. This article discusses the long-Hangzhou Expressway route plan selection study and focus on the highway after the section of the town of Pingyao, the viaduct option and roadbed for selection.Through technical and economic projects, the programme of the viaduct section of line is superior to conventional indicators of the roadbed programme, but its high cost (159 million yuan higher than the roadbed programme). However, merely starting the project itself, for technical and economic projects, is not fully reflect the advantages and disadvantages of the two programmes. Through, the viaduct option in the conservation of land resources, convenient travel along the transport and environmental protection, and its value reached 200 million yuan. Therefore, from the cost-effectiveness of community-wide perspective, the viaduct option is superior to conventional roadbed programme, it should be recommended as a programme.