| Regional tourism traffic network is the basic carrier of flow of tourism flow,its network layout has important influence on travel quality,and considerable layout of Regional tourism traffic network can meet the demands of tourism flow effectively.With the rapid development of the tourism industry,regional tourism demand surges,especially in the holiday travel peak periods,rapid gathering of tourism flow will form hype-congestion tourism flow easily.In the practical regional tourism traffic network,hype-congestion tourism flow induced traffic congestion and safety hidden trouble constantly.In face of increasingly prominent of hype-congestion tourism flow,as the principal compositions of the optimization of regional tourism traffic network optimization,the layout of regional tourism traffic network plays an important role in alleviating the contradiction between supply and demand of tourism traffic.Under the influence of hype-congestion tourism flow,the research of evaluation and optimization about the layout of regional tourism traffic network has theoretical and practical significance.Scholars at home and abroad has carried out a series of preliminary research to the tourism traffic problems,some verified the importance’ of the layout of regional tourism traffic network for the access of tourism flow into the tourism destination by establishing different theoretical model.But they ignored the special effects of hype-congestion tourism flow,make the research of layout of tourism transportation network shortcomings.In order to better fit with actual situation,we shall take the influence of hype-congestion tourism flow as an important premise of the research of regional tourism traffic network layout.Thus,on the basis of the advanced research results at home and abroad and with focus on the regional tourism traffic network,under the influence of hype-congestion tourism flow,this paper has carried out the main following research work around the research of evaluation and optimization about the layout of regional tourism traffic network:(1)Gain the space-time distribution characteristics of hype-congestion tourism flow base on tourist flow division,and make reasonable assessment of adaptability of hype-congestion tourism flow and regional tourism traffic network.The results showed that:time-space distribution of hype-congestion tourism flow has the characteristics of core edge distribution,which comprise by distributed flow mainly,and failed to form regional circular migration,however it shows the of regional circular migration.At the same time,it has the imbalance of the diffusion,but shows obvious concentration of local regional migration;the form of layout of regional tourism traffic network will lead hype-congestion tourism flow shows characteristics of imbalance of the diffusion,and it can’t meet the demand of hype-congestion tourism flow.(2)By using the theory of complex network excavating structure characteristic of the layout of regional tourism traffic network,paper uses the indexes like average degree,clustering coefficient,effectiveness to conduct network layout structure analysis,and then under the influence of hype-congestion tourism flow,analyzes robustness and anti-destroying ability of tourism traffic network base on hostile attack according to the nodes degree and betweenness of descending.The results showed that:under the hostile attack according to the nodes degree and betweenness of descending,The average shortest distance of tourism comprehensive transportation network rises sharply and then decline rapidly,the network collapses in a short time,that reflects the Yunnan tourism comprehensive traffic network relies on central city excessively,the lack of ring protection of central city and the preparation channel of urban tourist traffic at the same time.(3)Bi-optimization model of the layout of regional tourism traffic network is established,maximize economic benefits of transportation system model is the upper model,model of passenger flow distribution based on stochastic user equilibrium is the lower model,which is used to analyze the traffic mode choice behavior of the tourists in the optimization scheme that given by the upper model.(4)Accessibility of tourist traffic network distance metric evaluation model is established,which utilizes the accessibility to evaluate the optimization result of the regional tourism traffic network.The results showed that:based on calculation of spatial accessibility,the node which has the highest promotion rate of accessibility of optimized network is node 10,up to 12.39%.The overall average accessibility rises at the same time,and the promotion rate of average accessibility up to 8-31%.Under the influence of hype-congestion tourism flow,time accessibility of actual regional tourism traffic network drops sharply,time accessibility of nodes down by 21-34%.Time accessibility of optimized regional tourism traffic network drops smoothly,and time accessibility of nodes down by 5%-12%. |
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