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Resilient and Sustainability Analysis of Flexible Supporting Structure of Expansive Soil Slope

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  • Rui Zhang

    (School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China)

  • Panxuan Tang

    (School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China)

  • Tian Lan

    (School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Zhaojing Liu

    (China Railway Nanning Group Co., Ltd., Nanning 530029, China)

  • Shiguang Ling

    (School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China)

Abstract

In order to improve the ability of the flexible support structure to resist, recover and adapt to the failure of expansive soil slope, it is necessary to analyze and study its structural resilience systematically. Based on the long-term field monitoring test of expansive soil slope with flexible support along the south line of the Guinan key project, combined with the whole life cycle assessment (LCA), this paper discusses the theory and method of resilient design of expansive soil slope with a flexible support structure. The results show that the variation trend of geogrid strain is basically consistent with that of soil pressure at the side of the slope. It increases gradually with the increase in rainfall in the rainy season. When the rainfall decreases significantly in the dry season, the geogrid will shrink accordingly to realize the periodic regulation of lateral deformation of expansive soil. The life cycle assessment analysis shows that the carbon emission of the flexible support structure is 10% of that of the rigid support structure, and the resource and energy consumption of the flexible support structure is about 50% lower than that of the rigid support structure.

Suggested Citation

  • Rui Zhang & Panxuan Tang & Tian Lan & Zhaojing Liu & Shiguang Ling, 2022. "Resilient and Sustainability Analysis of Flexible Supporting Structure of Expansive Soil Slope," Sustainability, MDPI, vol. 14(19), pages 1-20, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:19:p:12813-:d:935964
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    References listed on IDEAS

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    1. Nässén, Jonas & Holmberg, John & Wadeskog, Anders & Nyman, Madeleine, 2007. "Direct and indirect energy use and carbon emissions in the production phase of buildings: An input–output analysis," Energy, Elsevier, vol. 32(9), pages 1593-1602.
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    Cited by:

    1. Danqing Song & Wanpeng Shi & Chengwen Wang & Lihu Dong & Xin He & Enge Wu & Jianjun Zhao & Runhu Lu, 2023. "Numerical Investigation of a Local Precise Reinforcement Method for Dynamic Stability of Rock Slope under Earthquakes Using Continuum–Discontinuum Element Method," Sustainability, MDPI, vol. 15(3), pages 1-24, January.
    2. Zhongmei Wang & Zhiqiang Lai & Lianjun Zhao & Kangwei Lai & Li Pan, 2022. "Mesoscopic Failure Behavior of Strip Footing on Geosynthetic-Reinforced Granular Soil Foundations Using PIV Technology," Sustainability, MDPI, vol. 14(24), pages 1-12, December.
    3. Yi Cai & Mingxi Ou, 2023. "Experimental Study on Expansive Soil Improved by Lignin and Its Derivatives," Sustainability, MDPI, vol. 15(11), pages 1-17, May.

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