城市组团级TOD站域建成环境对站域空间活力的影响机制研究

我国许多大型城市正处于轨道交通加速成网的关键时期，但公交导向开发（TOD）面临市场需求旺盛，实证研究不足的现状，其中组团级轨道交通站域中人群活动单一，空间活力不足的问题突出。轨道交通站域建成环境作为人群活动的物质载体，是影响城市空间活力强度及时空效应的重要因素。但站域建成环境如何影响城市空间活力，哪些要素发挥着关键作用还亟待探究。本课题以成都市25个组团级轨道交通站域为研究对象，构建“建成环境-人群活动-空间活力”的理论框架。首先建立基于活力强度、活力稳定性与活力多样性的多维度空间活力测度体系；然后融合质性分析与多种统计学方法，全面测度样本站域建成环境与空间活力时空特征；最后通过构建结构方程模型，精细化探究站域建成环境指标对空间活力多维特征的影响大小、方向及作用路径，由此识别促进活力提升的关键建成环境要素。以期为我国组团级轨道交通站域的TOD开发与城市设计提供理论基础和技术支撑。

Many large cities in China are in a critical period of accelerating rail transit network. However, the transit-oriented development (TOD) is facing the dilemma of strong market demand and insufficient empirical research. The rail transit neighborhood station is widely distributed in the city, facing the problem of infrequent activity type and insufficient spatial vitality in the station area. The built environment of the rail transit station area, as the material carrier of the crowd and their activities, is an important factor affecting the intensity of urban space vitality and space-time effects. However, how the built environment of the station area affects the vitality of urban space and which factors play a key role have not yet been answered. This project takes 25 neighborhood-level rail transit stations in Chengdu as the research object, and constructs the theoretical framework of "built environment-crowd activities-spatial vitality". First, a multi-dimensional spatial vitality measurement system is established based on vitality intensity, vitality stability and vitality diversity. Then the spatial and temporal characteristics of spatial vitality and the built environment of the sample station areas are measured, integrating qualitative analysis and a variety of statistical methods. By constructing a structural equation model, the influence intensity and influence path of the built environment indicators of the station area on the multi-dimensional characteristics of spatial vitality are explored. Thus, the key built environment elements that promote vitality are identified. It is expected to provide theoretical foundation and technical support for the spatial optimization and planning management of the neighborhood-level rail transit stations in China.