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| Analysis on Optimization Strategies of Hazardous Materials Road Transportation Network Using Complex Network Theory |
| CHONG Pengyun1, YIN Hui2
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1. Safety Research Center of Traffic & Transportation, Yunnan Science Research Institute of Communication & Transportation Company Limited, Kunming 650011;
2. Power China Kunming Engineering Corporation Limited, Kunming 650051 |
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Abstract To study the topological properties and optimization strategies of hazardous materials road transportation network (HMRTN), the HMRTN of Dalian city was used as a case to investigate the topological properties by establishing an undirected, weighted and connected HMRTN model through primal approach based on complex network theory. The results of eigenvalues of average node degree, node distribution, characteristic path length and average clustering coefficient etc. show that: 1) the degree distribution is extremely uneven, and the cumulative node degree is subjected to exponential distribution, showing the network characteristics of random network; 2) the HMRTN has small characteristic path length and large network clustering coefficient, showing the network characteristics of small-world network; 3) by reducing the network average road length in the similar conditions (the size of network, the characteristic path length, etc.), expanding the size of network and taking a planning method with sparse and dense network etc. are all good for improving the network characteristics of small-world network. These findings provide a new reference to optimize and enhance the HMRTN and its network planning.
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Received: 07 July 2018
Published: 31 January 2019
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