| The intersection about Hei Longjiang provincial government is located in the city geographical centre in Harbin, and is an junction of Zhong Shan road and Chang Jiang road(Zhong Xuan road), surrounding the intersections, lies in Hei Longjiang Provincial Government, Provincial Public Security Department, Provincial Department of Communications, the Provincial Civil Administration Office, Provincial Department of Commerce, Provincial Water Resources Bureau, Provincial Labor and Social Security Hall, Provincial Animal Husbandry Bureau, Provincial Literary Art Association, a Secondary Air Station Authority, Feng Hua middle school and other government departments and important units. Zhong Shan road, He Ping road and Chang Jiang road are the city main road, there into, Zhong Shan road is one of the two shafts of main frame system "Two axis Four Ring Ten Radiation" in the city network in Harbin, is the urban traffic artery. The geographical location, traffic function, and social influences of Hei Longjiang provincial government intersection are very important, and the intersection is main hub in Harbin city road network. For years, congestion, delay, serious environmental pollution and other problems always happened in this intersection. In order to alleviate traffic tension, improve operation efficiency and make a convenient way to travel, two kinds of schemes were proposed by the relevant departments, they are plane traffic organization and interchange scheme.Based on the large of investigation, aim at making the national economic evaluation of the two kinds of solutions above, and established a national economic evaluation index system, using the "Project and No Project" contrast method to calculate the cost and benefit of the schemes, and make sensitivity analysis for all kinds of schemes to determine the ability to resist risks; Combines the grey model and growth model to predicate the intersection traffic demand of the next 30 years, using the micro-traffic simulation software VISSIM to simulate the future operation condition of each schemes, therefore provides basic data for the benefits calculation; For the intangible benefits is inability to quantitative, the thesis adopts Delphi Method to make qualitative analysis, and get statistics results.Research results show that two kinds of schemes are in different extent solve the congestion problem, Among them, the plane traffic organization shows small investment, fast recovery, but long-term benefits is poor and only could relieve the congestion problem, while the interchange scheme shows big investment and slow recovery rate, but the long-term operational efficiency is good and can be fundamentally solved the congestion problem, can shorten the intersection delay and queue length in great degree; The intangible benefits analysis shows that the interchange scheme superior the traffic organization plan. Comprehensive consideration, the son of interchange schemeâ…¢have the greatest advantage of the national economy. |