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A Fuzzy-AHP-based variable weight safety evaluation model for expansive soil slope

Author

Listed:
  • Weimin Ye

    (Tongji University
    Tongji University)

  • Cen Gao

    (Tongji University)

  • Zhangrong Liu

    (Tongji University)

  • Qiong Wang

    (Tongji University)

  • Wei Su

    (Tongji University)

Abstract

Due to the expansion and shrinkage deformation caused by the cyclic drying and wetting process, the expansive soil slope often slides in a shallow, long-term and repetitive way, resulting in the changing contribution rate of safety evaluation factors to the stability of the slope constantly changes. In this work, a variable weight Fuzzy-AHP method was constructed to constantly evaluate the safety of expansive soil slopes. Firstly, considering the effects of differences in expansibility, two variable weight models for strong and medium-weak expansive soils were proposed, respectively, based on the cohesion-water content relationships in published articles. Meanwhile, the ridge-shaped membership function was adopted in the proposed method, aiming to timely response the deterioration of evaluation factors. Using the proposed variable weight Fuzzy-AHP method, analyses were conducted on an expansive soil slope in Guangxi, China. Results show that the method proposed in this work could dynamically evaluate the stability of the expansive soil slope comparing to that obtained by the traditional constant weight Fuzzy-AHP method, verifying the reliability and superiority of the variable weight Fuzzy-AHP stability evaluation method established in this work.

Suggested Citation

  • Weimin Ye & Cen Gao & Zhangrong Liu & Qiong Wang & Wei Su, 2023. "A Fuzzy-AHP-based variable weight safety evaluation model for expansive soil slope," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 119(1), pages 559-581, October.
    • Handle: RePEc:spr:nathaz:v:119:y:2023:i:1:d:10.1007_s11069-023-06130-7
    DOI: 10.1007/s11069-023-06130-7
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    References listed on IDEAS

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    1. Wenwei Li & Baotian Wang & Jinyu Zuo & Bingsheng Zhou & Haixia Zhang, 2021. "Reliability Analysis of Expansive Soil Slope Stability Based on the Three-Broken Line Model," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-14, April.
    2. Saaty, Thomas L., 1990. "How to make a decision: The analytic hierarchy process," European Journal of Operational Research, Elsevier, vol. 48(1), pages 9-26, September.
    3. Hamid Pourghasemi & Biswajeet Pradhan & Candan Gokceoglu, 2012. "Application of fuzzy logic and analytical hierarchy process (AHP) to landslide susceptibility mapping at Haraz watershed, Iran," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 63(2), pages 965-996, September.
    4. Luísa Vieira Lucchese & Guilherme Garcia Oliveira & Olavo Correa Pedrollo, 2021. "Mamdani fuzzy inference systems and artificial neural networks for landslide susceptibility mapping," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 106(3), pages 2381-2405, April.
    5. Reshma T. Vilasan & Vijay S. Kapse, 2022. "Evaluation of the prediction capability of AHP and F-AHP methods in flood susceptibility mapping of Ernakulam district (India)," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 112(2), pages 1767-1793, June.
    6. Shan Yang & Zitong Xu & Kaijun Su, 2021. "Variable Weight Matter–Element Extension Model for the Stability Classification of Slope Rock Mass," Mathematics, MDPI, vol. 9(21), pages 1-13, November.
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