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基于分层复杂网络的城际路网空间结构特征

, PP. 98-103

Keywords: 交通工程,分层结构,复杂网络,城际路网,空间分布

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Abstract:

为有效分析城际路网的运输需求与负载分布的空间结构特征,基于复杂网络理论与GIS技术,提出了城际路网的分层复杂网络结构模型.该模型克服了拓扑网络模型中只考虑节点连通关系而忽略运输需求与负载的空间分布特征的设计缺陷.所提出的交通介数、运输需求强度、负载介数指标能够有效测度城际路网的物理层、逻辑层与映射层网络的空间结构特征.结合我国内地城际路网的GIS及区域经济数据,分别计算了3个测度指标的空间分布.实证结果有效地解释了公路运输需求以京哈、京珠高速公路为界呈东强西弱分布的原因;揭示了我国内地城际路网的交通介数以西安为中心呈轴辐式分布,而在环渤海、长三角及京沪高速公路沿线表现出高负载中心性的结构特征.

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