Abstract
Recently, urban agglomerations have become the main platform of China’s economic development. As one of those, the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) has an important strategic position in national blueprints. Its amazing achievement is inseparable from reliable and resilient transportation networks. With the aim of improving the sustainability of the GBA, this paper presents a novel view of vulnerability and resilience of integrated transportation networks within an urban agglomeration. According to complex network theory, the integrated transportation network model of the GBA was established. Various scenarios were considered to improve the overall level of defensive ability, including random failures, targeted attacks and natural hazards. Vulnerability and resilience assessment models were developed to investigate the influences on the whole network. Finally, a simulation analysis was conducted on the GBA to examine the variations in network performance when faced with different attack scenarios. The results indicate that the transportation network of the GBA is more vulnerable and has less resilience to targeted attacks, while natural hazards had little influence on the performance, to a certain extent. Moreover, the betweenness recovery strategy seemed to be the best choice for every attack scenario.
Highlights
Since urban agglomeration appeared in a top-level policy blueprint of China in 2006, it has shown a favorable trend
If they are so close that their distance (
There was no doubt that the recovery based on degree and betweenness had faster recovery rates than others
Summary
Since urban agglomeration appeared in a top-level policy blueprint of China in 2006, it has shown a favorable trend. Since this ambitious plan has facilitated 19 urban agglomerations, leading China into a new stage of economic development. The GBA consists of the nine municipalities of Guangzhou, Shenzhen, Zhuhai, Foshan, Huizhou, Dongguan, Zhongshan, Jiangmen and Zhaoqing in Guangdong Province, as well as two special administrative regions including Hong Kong and Macao, covering a total area of 56000 square kilometers. Transportation networks face a constant barrage of external stresses or threats that challenge their operation. They must deal with the frequent occurrence of random breakdowns and unexpected events such as terrorist attacks. Several attempts have been made to study the vulnerability and resilience of transportation networks [2,3]
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