基于FLD算法的南昌市老城区公交网络的优化研究

为了研究城市道路遭受攻击而出现拥堵时所呈现的特性,把现实中的城市道路抽象成复杂网络,利用FLD算法对其体现的特征进行仿真分析,结果表明:公交路网在遭受针对性和随机性攻击时均具有一定的稳定性,但当网络中的失效节点达到一定比例时,遭受针对性攻击时的路网会在极短时间内断裂所有连边从而导致网络迅速崩溃。在此研究的基础上,分析了南昌市老城区交通路网的几个拓扑特征并相应地提出了四点可行性的优化建议,结果表明优化后的路网具有更高的通达性和抗毁性,对保持城市交通的畅通性具有一定的现实意义。

OPTIMIZATION RESEARCH OF BUS NETWORK IN OLD CITY OF NANCHANG CITY BASED ON FLD ALGORITHM

Based on the complex network theory, when suffered the attacks of different nature, the characteristics of city transit network was simulated by the FLD algorithm. Results show that the transit network has certain stability when subjected to targeted and random attacks, but when the failure of nodes in the network reaches a certain proportion, the network suffered targeted attacks will disconnect all the edges in a very short time which lead to the rapid collapse of the network, on the basis of this study, several topological features of the old city of Nanchang city road network was analyzed and the four suggestions for optimization was put forward, the results show that the optimized network has higher accessibility and invulnerability,which will has a certain practical significance to maintain the smooth flow of traffic in the city.