The Research Trend and Hotspots in Sustainable Construction of Transportation Infrastructure—Visualization Analysis Based on Knowledge Graph

In order to track the research trend and hotspots sustainable construction of transportation infrastructure, this research conducted quantitative analysis and visualization analysis of relevant literature in Web of Science from 2015 to 2023 by using the softwares of Vosviewer and Citespace, explored the development of this field from the perspectives of keyword distribution. In addition, knowledge maps such as key co-occurrence label view and keyword timeline graph are drawn, so as to introduce the research hotspot and development trend in this field. It is found that the research hotspots in this field are mainly concentrated in three aspects: (1) the relationship between transportation infrastructure and ecological environment; (2) the economic effects of transportation infrastructure; (3) the social problems of transportation infrastructure. Some new hot research directions have emerged in recent years, such as application of new energy and new technology in transportation infrastructure, construction of green transportation infrastructure and ecological corridor, the relationship between economic agglomeration and transportation infrastructure, the measurement and evaluation of economic spillover effect and network effect of transportation infrastructure, sustainable urban transport policy research and urban transport and social behavior research, it will provide some reference value for the subsequent research of scholars in this field.