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Dual-object traffic network planning model optimization calculation method

A planning model and transportation network technology, which is applied in the field of dual-objective transportation network planning model optimization calculation

Inactive Publication Date: 2017-10-20
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The present invention proposes a dichotomous solution framework for the dual-objective optimization problem. In the process of solving the discrete optimal problem, a single-objective function is constructed to transform the original problem into an optimal problem of solving parameter scalarization.

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  • Dual-object traffic network planning model optimization calculation method
  • Dual-object traffic network planning model optimization calculation method
  • Dual-object traffic network planning model optimization calculation method

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[0037] Such as figure 1 As shown, a simple network—Brace network is used as an example of the present invention to illustrate the specific implementation manner. The Brace network is a small network composed of 5 chains and 4 nodes, which can clearly determine all feasible solutions, including the corresponding iterative process.

[0038] figure 1 Given the supply and demand information of the network, figure 2 Then list the capacity that can be expanded by each alternative chain. The choice of different chains will bring about shortened free flow time, changes in capacity and construction costs.

[0039] The objective function of the original problem is to minimize the construction cost, and the second is to minimize the travel cost. After constructing the single-objective model using the binary solution calculation method, the non-inferior solution of the dual-objective problem can only be determined if the solution of the scalarized single-objective problem is feasible....

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Abstract

The dual-objective network planning model proposed in the dual-objective traffic network planning model optimization calculation method provided by the present invention can avoid the defects of the budget planning model and the fixed cost model, and is a more reliable model. The key of the present invention is to establish the internal connection between the optimal solution set of the scalarization problem and the non-inferior solution set of the initial dual-objective problem, and to search for the order and method of determining Pareto-optimal solutions. The invention proposes a dichotomous solution framework for the dual-objective optimization problem, and constructs a single-objective function in the process of solving the discrete optimal problem, transforming the original problem into an optimal problem of solving parameter scalarization.

Description

technical field [0001] The invention belongs to the technical field of traffic planning, in particular to a method for optimizing calculation of a dual-objective traffic network planning model. Background technique [0002] The construction of China's urban transportation network system has achieved world-renowned achievements in recent years, which has effectively alleviated the bottleneck of urban transportation that has restricted the development of my country's national economy for a long time in the past. However, with the improvement of our country's national economic level, the acceleration of urbanization, the increase in the number of residents' private cars, the urban traffic is becoming increasingly tense, and road traffic jams are serious. To achieve sustainable development, planning and construction of urban road networks, and optimize existing traffic networks, Achieving sustainable support for social economy and urban development is the inevitable direction of...

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Application Information

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IPC IPC(8): G06Q10/04G08G1/01
CPCG06Q10/04G08G1/0104
Inventor 谢驰米阳刘海洋
Owner SHANGHAI JIAO TONG UNIV
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