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Road network construction model based on urban roads

A road network and road section technology, applied in the research and implementation of road network construction in urban traffic simulation, can solve problems such as no physical attributes

Inactive Publication Date: 2017-05-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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Problems solved by technology

Among them, Section and Link represent similar meanings, that is, road sections composed of multiple lanes, but Join is different from Node and Connector. In AIMSUN, Join only represents the connection relationship between road sections, and does not have specific physical attributes.

Method used

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  • Road network construction model based on urban roads
  • Road network construction model based on urban roads
  • Road network construction model based on urban roads

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Embodiment Construction

[0020] 1. Establishment of the logical structure of the road network

[0021] The expression of the logical structure of the road network in the online micro-traffic simulation system proposed in this paper completely follows the above-mentioned analysis and design, and the required simulated traffic network is divided into two logical levels. The road network topology layer is composed of the two most basic macro structures including road sections and intersections. Intersections and road sections are represented by topological network nodes, and the accessibility of intersections and road sections is represented by topological network edges. The intra-network association layer represents the relationship between the road section of the micro concept and the lane in the intersection. The use of road network topology layer and intra-network association layer structure can well take into account the needs of macroscopic and microscopic simulation. For example, route selection ...

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Abstract

In combination with a graph structure correlation theory, a two-layer road network logic structure is constructed. The road network logic structure comprises a road network topology layer and an intranet correlation layer, wherein the road network topology layer is composed of road segments and intersections, and the road segments are divided into straight ways and bends. A cardinal spline curve with five datum points is adopted to perform base modeling on the bends, and a data structure is created on the basis of generality of the road segments to describe basic attributes of the road segments; last, a road network editing tool is realized on the basis of a road network construction model, wherein the tool provides a visual interaction interface, and therefore a user can edit a road network in a simulated region just through simple operation such as dragging and rotating.

Description

technical field [0001] The invention relates to relevant knowledge of graph theory, and the relevant background and research of urban road construction models, in particular to the research and realization of road network construction in urban traffic simulation. Background technique [0002] With the urbanization of our country and the development of the existing city scale, as well as the increase of ordinary family private cars, the problem of traffic congestion is becoming more and more prominent, and traffic congestion has become an important factor restricting the economic development of our country. Using the real traffic environment for traffic simulation requires a lot of investment, and there are many unsafe factors hidden in some aspects, which makes it difficult or even impossible to find the optimal traffic planning scheme. Therefore, the application of computer technology for traffic simulation has become a very effective and economical technical means. Traffi...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/18G06F30/20
Inventor 周世杰廖永建贺雅琪李旺黄卓
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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