International multimodal transport accessibility measurement method based on gravity model

Abstract

The invention discloses an international multimodal transport accessibility measurement method based on a gravitation model, which is applied to a multimodal transport network for transporting cargoes from domestic cities to overseas areas. Comprising the following steps: 1, constructing a transportation reachability model according to the convenience degree of transporting domestic goods to the overseas on an international multimodal transportation network and the attraction of the domestic goods in overseas areas; 2, constructing a path selection model according to the multiterm logit model; 3, constructing a generalized transportation impedance model according to three main processes (inland, port and ocean) of goods on an international multimodal transportation chain; 4, constructing a transportation attraction model according to the regional total production value, the human resource endowment and the port throughput; and 5, visually displaying the spatial distribution characteristics of the accessibility of the international trade multimodal transport by means of Mapinfo software according to a result calculated by the model. According to the method, the multimodal transport accessibility in traffic planning can be accurately measured, and the actual measurement precision is improved.

Description

technical field [0001] The invention relates to the fields of geographic information technology and traffic planning, in particular to a method for measuring the accessibility of international multimodal transport based on a gravity model. Background technique [0002] As an important indicator to measure the difficulty of reaching a certain place in the transportation system, accessibility has gradually developed into an important basic concept. However, the existing accessibility measurement methods have the following shortcomings: (1) there are few studies on the direction of international multimodal transport; (2) when measuring accessibility, only traffic factors are considered, while cargo transportation is ignored (3) In the selection of transportation routes, past research only considers the shortest route, which is inconsistent with the actual situation; (4) In the accessibility measurement, only the distance cost of goods transportation is considered, while the t...

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Problems solved by technology

However, the existing accessibility measurement methods have the following shortcomings: (1) There is little research on the direction of international multimodal transport; (2) In the accessibility measurement, only traffic factors are considered, while cargo transportation is ignored (3) In the selection of transportation routes, past studies only considered the shortest route, which is inconsistent with reality; (4) In the accessibility measurement, only the distance cost of cargo transportation was considered, while the time cost occupied by the cargo was ignored ; (5) There is no research considering the impact of different types of goods on accessibility

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