Sustainable Comfort Design in Underground Shopping Malls: A User-Centric Analysis of Spatial Features

Xingxing Zhao, Dongjun Guo (), Yulu Chen, Yanhua Wu, Xingping Zhu, Chunhui Du and Zhilong Chen
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Xingxing Zhao: Research Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, China
Dongjun Guo: Research Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, China
Yulu Chen: College of Civil Engineering and Architecture, Huanghuai University, Zhumadian 463000, China
Yanhua Wu: Research Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, China
Xingping Zhu: Research Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, China
Chunhui Du: Research Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, China
Zhilong Chen: Research Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, China

Sustainability, 2025, vol. 17, issue 6, 1-21

Abstract: The expansion of urban underground spaces has broadened the range of urban activities by accommodating functions such as transportation, retail, and entertainment. Underground shopping malls (USMs) have been widely developed as a sustainable strategy to expand urban space capacity, alleviate surface congestion, and optimize land-use efficiency. However, the development and utilization of USMs often neglect user-centered evaluations, risking mismatches between design outcomes and long-term sustainability goals such as energy efficiency, user retention, and spatial adaptability. Therefore, this study analyzes 12 typical USMs in Nanjing, China, based on environmental psychology principles, employing mixed-methods research that combines objective measurements of spatial elements with subjective user perception surveys to establish a regression model investigating correlations between USM spatial–physical environments and user comfort perception. The results show that users generally have a positive impression of the current underground environment, but there are significant differences in their subjective perceptions of the different attributes of the USMs. The USMs present a trend of humanization, human culture, and landscape in terms of spatial characteristics. These improvements are critical for fostering long-term sustainable use by minimizing vacancy rates and retrofitting needs. The findings reveal that the human-centric comfort level of the USMs is largely determined by multi-dimensional architecture-space features, as well as personal and social activity level features. Building on these insights, we propose actionable strategies to advance sustainable USM design, prioritizing adaptive reuse, energy-efficient layouts, and culturally resonant esthetics. This work clarifies the direction of USM design optimization and improvement from the perspective of users’ subjective perception and provides a theoretical foundation for aligning underground development with global sustainability frameworks like the UN SDGs.

Keywords: underground shopping malls (USMs); sustainable urban design; underground environmental sustainability; human-centric comfort; user perception; spatial features; semantic differential (SD) method; environmental psychology (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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