- 规划与建设
- 文章编号：1009-6000(2026)03-0082-08
- 中图分类号：U491 文献标识码：B
- Doi：10.3969/j.issn.1009-6000.2026.03.011
- 项目基金：国家自然科学基金面上项目“出行行为视角下城市道路网络对交通事故的非线性效应与作用机制研究”（批准号：42371252）；国家自然科学基金面上项目“出行行为视角下城市土地利用对交通事故的作用机制与调控研究”（批准号：41971179）。
- 作者简介：谢波，博士，武汉大学城市设计学院教授，博士生导师，主要从事城市交通安全与土地利用规划研究；
张伊阳，武汉大学城市设计学院，硕士研究生；
何寰，通信作者，高级工程师，武汉市规划研究院交通市政分院战略部部长。
- 多尺度视角下街道网络拓扑特征对交通事故的空间效应及优化研究——以武汉市为例
- Spatial Effects and Optimization Study of Street Network Topological Characteristics on Traffic Accidents from a Multiscale Perspective: A Case Study in Wuhan, China
- Multiscale Perspective: A Case Study in Wuhan, China 谢波 张伊阳 何寰
- XIE Bo ZHANG Yiyang HE Huan
- 摘要：
文章以武汉市主城区路段为单元，构建扩展自负二项回归模型，探究街道网络拓扑特征在多尺度下对严重交通事故的影响。结果显示，街道网络拓扑对交通安全的影响呈现复杂性和尺度依赖性。中介中心性、链节比和远度与事故负相关，但其空间溢出效应在社区和街区尺度增加邻近风险，城市尺度则相反。绕行性在社区和城市尺度与事故正相关，街区尺度相反。建议结合土地利用和设施规划，实施差异化街道网络优化策略，为街道安全规划提供科学指导。 - 关键词：
街道网络；拓扑特征；交通事故；尺度效应；空间溢出效应；优化策略 - Abstract: Using sections of Wuhan’s main urban area as spatial units, an extended negative binomial regression model was constructed to investigate the impact of street network topology on severe traffic accidents across multiple scales. The results demonstrated the intricate and scale-dependent relationship between street network topology and traffic safety. Betweenness centrality, link ratio, and farness exhibited a negative correlation with accidents; however, their spatial spillover effects increased neighboring risks at the community and block levels while showing an opposite trend at the city level. Circuity displayed a positive association with accidents in communities and cities but revealed a reverse effect at the block level. It is recommended to integrate land use planning, facility optimization strategies and differentiated optimization strategies for street networks to provide scientific guidance for enhancing street safety.
- Key words: street network; topological characteristics; traffic accidents; scale effect; spatial spillover effect; optimization strategy