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Numerical analysis of a finite slope improved with stone columns under the effect of earthquake force

Author

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  • Cenk Cuma Çadır

    (Yozgat Bozok University)

  • Mustafa Vekli

    (Ondokuz Mayıs University)

  • Ferhat Şahinkaya

    (Yozgat Bozok University)

Abstract

Slope stability is one of the most important issues of geotechnical engineering. Significant slope failures (landslides), which result from earthquakes, can cause considerable losses of life and property. Hence, it is required that a slope keeps its stability under the effect of earthquake forces. This study includes the numerical analysis (pseudo-static) of slopes improved with stone columns under the effect of earthquake force. In the analysis conducted using the finite element program, the safety factor was determined by performing the safety analysis of the slopes modeled (different s/D (2, 2.5, 3) ratios, c/(γ.H) (0.19, 0.14, etc.) ratios, and slope angles (β: 20°, 25°)) without the effect of earthquake force and under the effect of earthquake force. As a result of this study, it was observed that the slopes improved with stone columns had a higher factor of safety compared to the slopes without stone columns both under the effect of earthquake force and without the effect of earthquake force. In the study, the safety factor of the slopes improved with stone columns under the effect of earthquake force increased up to 1.24 times in comparison with the slopes not improved with stone columns. Furthermore, under the effect of earthquake force, a 22.50% decrease was observed in the horizontal displacement of the slope model supported with stone columns compared to the slopes without stone columns. The study determined that the stability of clay slopes reinforced with stone columns under the effect of earthquake force increased. In light of the data obtained from this study, it is thought that it may be important in terms of creating preliminary information in land applications that require quick and economical solutions. Moreover, it is thought that the study will shed light on other studies to be carried out since it is a basic study on the numerical investigation of finite clay slopes reinforced with stone columns under the effect of earthquake force (pseudo-static).

Suggested Citation

  • Cenk Cuma Çadır & Mustafa Vekli & Ferhat Şahinkaya, 2021. "Numerical analysis of a finite slope improved with stone columns under the effect of earthquake force," 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(1), pages 173-211, March.
    • Handle: RePEc:spr:nathaz:v:106:y:2021:i:1:d:10.1007_s11069-020-04456-0
    DOI: 10.1007/s11069-020-04456-0
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    References listed on IDEAS

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    1. Ferhat Şahinkaya & Mustafa Vekli & Cenk Cuma Çadır, 2017. "Numerical analysis under seismic loads of soils improvement with floating stone columns," 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. 88(2), pages 891-917, September.
    2. Sima Ghosh, 2014. "Pseudo-Static Analysis of Slope Considering Circular Rupture Surface," International Journal of Geotechnical Earthquake Engineering (IJGEE), IGI Global, vol. 5(2), pages 37-43, July.
    3. Mustafa Vekli & Mustafa Aytekin & S. Banu İkizler & Ümit Çalik, 2012. "Experimental and numerical investigation of slope stabilization by stone columns," 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. 64(1), pages 797-820, October.
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    Cited by:

    1. Abhijit Chakraborty & V. A. Sawant, 2023. "Earthquake response of embankment resting on liquefiable soil with different mitigation models," 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. 116(3), pages 3093-3117, April.

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    1. Ferhat Şahinkaya & Mustafa Vekli & Cenk Cuma Çadır, 2017. "Numerical analysis under seismic loads of soils improvement with floating stone columns," 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. 88(2), pages 891-917, September.

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