This paper develops a conceptual framework of transitional edges to enhance understanding of the social value of urban street edges. Building from theoretical principles associated with socio-spatial understandings of urban realms, transitional edges conceptualise urban street edges as integrations of their social, spatial and material dimensions. This is captured in a tripartite structure highlighting socially relevant properties of transitional edges that act along them (extent), across them (laterality) and within them (locality). This provides a foundation for developing an approach to practical application based on identification and evaluation of transitional edges as assemblages of territorialised segments. To progress this, a developmental study of a length of Sharrow Vale Road in Sheffield, UK was carried out to explore how theoretical principles of the transitional edge conceptual framework could be translated for practical application. This reveals the potential of transitional edges to highlight that locally focused small-scale change and adaptation may be significant to the social potential of urban street edges. As a result, the current study sets out theoretical and practical foundations for a conceptual framework of transitional edges which will support development of an extensive funded programme of transitional edge case study research.

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过渡边缘：城市街道边缘社会空间理解的概念框架

本文开发了一个过渡边缘的概念框架，以增强对城市街道边缘社会价值的理解。基于与城市领域的社会空间理解相关的理论原则，过渡边缘将城市街道边缘概念化为它们的社会、空间和物质维度的整合。这体现在一个三方结构中，突出了沿它们（范围）、跨越它们（侧向性）和在它们之内（局部）起作用的过渡边缘的社会相关特性。这为开发基于过渡边缘识别和评估的实际应用方法奠定了基础，即作为领土化部分的组合。为了推进这项工作，对谢菲尔德的一段 Sharrow Vale 路进行了发展研究，开展英国以探索如何将过渡边缘概念框架的理论原则转化为实际应用。这揭示了过渡边缘的潜力，以强调以局部为重点的小规模变化和适应可能对城市街道边缘的社会潜力具有重要意义。因此，当前的研究为过渡边缘的概念框架奠定了理论和实践基础，这将支持过渡边缘案例研究的广泛资助计划的发展。