为了保证路网中各节点间的连通,在路网连通度的计算基础上,进一步讨论干线公路中断条件下周边剩余路网的连通情况,并使用概率解析法对剩余路网的疏散连通度进行计算.考虑到概率法计算各小节点疏散连通度的繁杂性,本文对此计算方法进行优化,提出了逐步缩减计算范围的方法,便于使用者快速地确定连通薄弱路段.%In order to ensure the connection of road network between nodes, this paper further discusses the connection situation of the nearby remaining road network while key roads are blocked by disastrous events. Taking into account the complexity of probability method to calculate connectivity between nodes, this paper optimizes the method and proposes reducing the calculation scope gradually, which facilitate users to quickly determine the weak sections of road network.
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