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Optimization Design of Underground Space Overburden Thickness in a Residential Area Concerning Outdoor Thermal Environment Evaluation

Author

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  • Xiaochao Su

    (Underground Space Research Center, Army Engineering University of PLA, Nanjing 210007, China
    State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210007, China)

  • Zhilong Chen

    (Underground Space Research Center, Army Engineering University of PLA, Nanjing 210007, China
    State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210007, China)

  • Xudong Zhao

    (State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210007, China)

  • Xiaobin Yang

    (Underground Space Research Center, Army Engineering University of PLA, Nanjing 210007, China
    Engineering Design and Research Institute of PLA Army Research Institute, Beijing 100000, China)

  • Qilin Feng

    (State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210007, China)

  • Haizhou Tang

    (Underground Space Research Center, Army Engineering University of PLA, Nanjing 210007, China
    State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210007, China)

Abstract

Reasonable design of the overburden thickness of underground space (OTUS) can influence the outdoor thermal environment by affecting the ground plant communities. To optimize the design of the OTUS for improving the outdoor thermal environment, this study summarized the influence mechanism of the OTUS on the outdoor thermal environment and proposed a framework of the optimization design of underground space overburden thickness. A typical row layout residential area in Nanjing, China, was taken as the research object on which to perform a numerical study of the influence of plant communities formed by two types of plant collocations (a middle- and low-level plant collocation and a middle- and high-level plant collocation) on the outdoor thermal environment (airflow field, air temperature, relative humidity and thermal comfort) under three different ratios of trees to shrubs (2:3, 1:2, and 1:3), and to provide suggestions regarding the design of the OTUS according to the designer’s requirements. The conclusions were summarized as follows: (1) If a designer wants to enhance outdoor ventilation, the OTUS should be designed to satisfy the requirements for the middle- and low-level plant collocations and the overburden thickness of the 2/5 underground space development area should be set to 80~100 cm, the overburden thickness of the other 2/5 area should be set to 45~60 cm and the overburden thickness of the remaining 1/5 area should be set to 30~45 cm. (2) If a designer wants to reduce air temperature, increase relative humidity, and improve outdoor thermal comfort, the OTUS should be designed to satisfy the requirements for middle- and high-level plant collocations and the overburden thickness of the 1/4 underground space development area should be set to 80~100 cm, and the overburden thickness of the remaining 3/4 area should be set to 45~60 cm.

Suggested Citation

  • Xiaochao Su & Zhilong Chen & Xudong Zhao & Xiaobin Yang & Qilin Feng & Haizhou Tang, 2018. "Optimization Design of Underground Space Overburden Thickness in a Residential Area Concerning Outdoor Thermal Environment Evaluation," Sustainability, MDPI, vol. 10(9), pages 1-15, September.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:9:p:3205-:d:168424
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    References listed on IDEAS

    as
    1. Xiaochao Su & Hao Cai & Zhilong Chen & Qilin Feng, 2017. "Influence of the Ground Greening Configuration on the Outdoor Thermal Environment in Residential Areas under Different Underground Space Overburden Thicknesses," Sustainability, MDPI, vol. 9(9), pages 1-19, September.
    2. Vandentorren, S. & Suzan, F. & Medina, S. & Pascal, M. & Maulpoix, A. & Cohen, J.-C. & Ledrans, M., 2004. "Mortality in 13 French cities during the August 2003 heat wave," American Journal of Public Health, American Public Health Association, vol. 94(9), pages 1518-1520.
    3. Xiaobin Yang & Zhilong Chen & Hao Cai & Linjian Ma, 2014. "A Framework for Assessment of the Influence of China’s Urban Underground Space Developments on the Urban Microclimate," Sustainability, MDPI, vol. 6(12), pages 1-31, November.
    4. Hong, Bo & Lin, Borong, 2015. "Numerical studies of the outdoor wind environment and thermal comfort at pedestrian level in housing blocks with different building layout patterns and trees arrangement," Renewable Energy, Elsevier, vol. 73(C), pages 18-27.
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    Cited by:

    1. Xiaoling Cheng & Xudong Zhao & Qiaoyi He & Xiaochao Su, 2022. "The Negative Influence of Urban Underground Space Development on Urban Microclimate," Sustainability, MDPI, vol. 14(16), pages 1-17, August.

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