Accessibility Plan for Revitalization of University Underground Campus : Access through Sunken Space in Korea University, Ewha Womans University, and Yonsei University

Purpose: The purpose of this paper is to analyze accessibility from the ground to the underground indoor space through the sunken space of the university's underground campus, identify problems, and suggest directions for improvement. As a theoretical consideration, based on the theory of sunken space and accessibility, analysis items such as ease of walking and space openness are derived in terms of function as a pedestrian use. In addition visual and perceptual accessibility was derived through Gestalt Theory to complete the analysis framework of sunken space. Method: The analysis method used field visit surveys and multifaceted literature research. Sunken space containing means of vertical connection such as stairs, ramps, elevators, and escalators were targeted at Hana Square at Korea University, ECC at Ewha Womans University, and Baekyangnuri at Yonsei University. Result: To summarize the results of the study, first, visual perception is influenced by closure, proximity, similarity and continuity. Second, natural movement lines from the ground and the placement of entrances must be carefully considered. Third, the spatial openness of the sunken space should be increased so that it becomes a place where additional activities such as the underground indoor space can be seen or where additional activities such as resing functions occur.