Research on the accessibility of tertiary hospitals based on two-step search mobile method
基于两步搜寻移动法的三甲医院可达性研究

摘要

伴随着中国区域交通基础设施的快速发展，反映区域空间结构与交通网络关系的重要指标——可达性，受到了广泛的关注。相较而言，国外可达性研究的空间分辨率不断地提高，可达性研究的内容更趋于多元化，不断地拓宽了可达性的研究与应用领域；国内可达性研究的发展速度较快，但是可达性研究的空间分辨率、内容等，仍然有待提升和丰富。随着社会发展的进步和人民生活水平的提高，人们对健康的需求也随之提高，近年来，医疗可达性逐渐成为城市研究领域的重点关注对象。尤其是2020年爆发的新冠疫情，让人们认识到医疗可达性和社会资源配置的公平性是至关重要的。文章基于北京市城六区范围内的三甲医院、医院床位数、公共交通路线和街区单元人口等数据，利用GIS平台，应用改良版两步搜寻移动法使得在北京城六区范围内到达三甲医院的关于公共交通的可达性清晰化，得出有理论、数据可以依据的可达性地图，从中得出相关的结论。

Abstract

With the rapid development of Regional Transportation Infrastructure in China, accessibility, an important indicator reflecting the relationship between regional spatial structure and transportation network, has received widespread attention. In contrast, the spatial resolution of foreign accessibility research continues to improve, and the content of accessibility research tends to be more diversified, and the research and application fields of accessibility are continuously broadened; the development speed of domestic accessibility research is relatively fast, but the spatial resolution and content of accessibility research still need to be improved and enriched. With the progress of social development and the improvement of people's living standards, people's demand for health has also increased, and in recent years, medical accessibility has gradually become the focus of urban research. The COVID-19 pandemic, in particular, in 2020, has made people realize that medical accessibility and equity in the allocation of social resources are crucial. Based on the data of the top three hospitals, the number of hospital beds, the number of public transportation routes and the population of block units within the six districts of Beijing, the article uses the GIS platform to apply the improved version of the two-step search and movement method to make the accessibility of public transportation clear to the top three hospitals within the six districts of Beijing, and draws a accessibility map based on theory and data, from which relevant conclusions are drawn.