19th WORLD CONFERENCE OF THE ASSOCIATED RESEARCH CENTRES FOR THE URBAN UNDERGROUND SPACE, Belgrade, Serbia, November 4-7, 2025. (Paper No: 4.4.63, pp. 687-696)
АУТОР(И) / AUTHOR(S): Zongchao Gu, Toshihiro Osaragi, Haipeng Zhu, Jiawei Leng
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DOI: 10.46793/ACUUS2025.4.4.63
САЖЕТАК / ABSTRACT:
Urban heatwaves pose significant risks to pedestrian comfort and mobility. This study develops a simulation-based framework to evaluate the climate resilience performance of underground pedestrian systems (UPS) in mitigating solar exposure during extreme heat events. Integrating meteorological data, urban morphology, and pedestrian flows, the model employs multi-agent simulation and a spatiotemporal “path-risk” exposure framework to estimate the potential reduction in surface-level exposure enabled by UPS use. The method is applied to the Tenjin district in Fukuoka, Japan, where hourly UPS effectiveness is quantified under different climatic and demand conditions. A set of spatial resilience indicators is proposed to reveal dynamic patterns of risk avoidance, system contribution, and beneficiary distribution. Results show that resilience benefits are driven by both solar exposure intensity and pedestrian demand, with marked temporal variability and spatial heterogeneity. The findings highlight the role of UPS as a strategic climate adaptation infrastructure and provide a decision-support tool for resilience-informed urban planning and underground space design.
КЉУЧНЕ РЕЧИ / KEYWORDS:
Underground pedestrian system, Urban heatwave resilience, Solar exposure mitigation, Agent-based simulation, Spatiotemporal risk modeling
ПРОЈЕКАТ / ACKNOWLEDGEMENT:
This study was supported by the Humanities and Social Sciences Youth Foundation of China (Grant No. 24YJCZH068) and the National Natural Science Foundation of China (Grant No. 51808094). The pedestrian traffic survey data used in this paper were obtained from by Fukuoka City Government.
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