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Ghaseminejad, Vali, Tarrah, Atina, Ghomi, Fereshteh. (1405). Effect of Subsurface Cavities on the Bearing Capacity of Shallow Strip Foundations in Soft Clay: A Numerical Study. پژوهشنامه مدیریت اجرایی, 2(2), 71-84. doi: 10.22080/ceas.2025.29867.1036
Vali Ghaseminejad; Atina Tarrah; Fereshteh Ghomi. "Effect of Subsurface Cavities on the Bearing Capacity of Shallow Strip Foundations in Soft Clay: A Numerical Study". پژوهشنامه مدیریت اجرایی, 2, 2, 1405, 71-84. doi: 10.22080/ceas.2025.29867.1036
Ghaseminejad, Vali, Tarrah, Atina, Ghomi, Fereshteh. (1405). 'Effect of Subsurface Cavities on the Bearing Capacity of Shallow Strip Foundations in Soft Clay: A Numerical Study', پژوهشنامه مدیریت اجرایی, 2(2), pp. 71-84. doi: 10.22080/ceas.2025.29867.1036
Ghaseminejad, Vali, Tarrah, Atina, Ghomi, Fereshteh. Effect of Subsurface Cavities on the Bearing Capacity of Shallow Strip Foundations in Soft Clay: A Numerical Study. پژوهشنامه مدیریت اجرایی, 1405; 2(2): 71-84. doi: 10.22080/ceas.2025.29867.1036

Effect of Subsurface Cavities on the Bearing Capacity of Shallow Strip Foundations in Soft Clay: A Numerical Study

Civil Engineering and Applied Solutions
دوره 2، شماره 2، تیر 2026، صفحه 71-84    اصل مقاله (1.12 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22080/ceas.2025.29867.1036
نویسندگان
Vali Ghaseminejad* ؛ Atina Tarrah؛ Fereshteh Ghomi
Department of Civil Engineering, Nowshahr Branch, Islamic Azad University, Nowshahr, Iran
تاریخ دریافت: 28 مرداد 1404،  تاریخ بازنگری: 25 مهر 1404،  تاریخ پذیرش: 30 مهر 1404 
چکیده
Subsurface cavities, both natural and anthropogenic, pose significant geotechnical challenges by altering stress distribution beneath shallow foundations. Conventional design approaches for strip footings often neglect the effects of such voids, potentially resulting in unsafe or overly conservative designs. This study employs a numerical investigation using the finite element software PLAXIS 2D to assess the impact of underground cavities on the bearing capacity of shallow strip foundations resting on soft clay. A parametric analysis was conducted to examine the effects of cavity diameter, embedment depth, and both horizontal and vertical offsets relative to the footing center. The Results indicate that increasing cavity diameter markedly reduces the ultimate bearing capacity. Additionally, increasing the cavity diameter from 0.25 to 0.5 times the footing width led to a 25%–40% decrease in load-bearing capacity. The study also identifies a critical influence zone beneath the footing where the presence of voids most significantly compromises performance. These findings underscore the importance of incorporating subsurface cavity effects into geotechnical design, particularly in urban areas, to enhance the safety and reliability of shallow foundations on soft clay. The parametric study covered cavity diameters D = 0.5–1.0 m, embedment depths Y = 2, 4, and 10 m, and horizontal eccentricities X = 0, 1, 6, and 10 m for a strip footing of width B = 2.0 m. Quantitatively, increasing D from 0.5 m to 1.0 m at Y = 2 m reduced the ultimate bearing capacity by ≈200 kPa (≈56.7%).
کلیدواژه‌ها
Shallow foundations؛ Bearing capacity؛ Subsurface cavities؛ Clay soils؛ Finite element analysis
مراجع
  1. Baus, R. L., Wang, M. C. Bearing Capacity of Strip Footing above Void. Journal of Geotechnical Engineering, 1983; 109: 1-14. doi:10.1061/(ASCE)0733-9410(1983)109:1(1).
  2. Jao, M., Wang, M. C. Stability of strip footings above concrete-lined soft ground tunnels. Tunnelling and Underground Space Technology, 1998; 13: 427-434. doi:10.1016/S0886-7798(98)00085-6.
  3. Sireesh, S., Sitharam, T. G., Dash, S. K. Bearing capacity of circular footing on geocell–sand mattress overlying clay bed with void. Geotextiles and Geomembranes, 2009; 27: 89-98. doi:10.1016/j.geotexmem.2008.09.005.
  4. Lee, J. K., Jeong, S., Ko, J. Undrained stability of surface strip footings above voids. Computers and Geotechnics, 2014; 62: 128-135. doi:10.1016/j.compgeo.2014.07.009.
  5. Asgari, A., Ahmadtabar Sorkhi, S. F. Wind turbine performance under multi-hazard loads: Wave, wind, and earthquake effects on liquefiable soil. Results in Engineering, 2025; 26: 104647. doi:10.1016/j.rineng.2025.104647.
  6. Jahangiri, V., Akbarzadeh, M. R., Shahamat, S. A., Asgari, A., Naeim, B., Ranjbar, F. Machine learning-based prediction of seismic response of steel diagrid systems. Structures, 2025; 80: 109791. doi:10.1016/j.istruc.2025.109791.
  7. Asgari, A., Arjomand, M. A., Bagheri, M., Ebadi-Jamkhaneh, M., Mostafaei, Y. Assessment of Experimental Data and Analytical Method of Helical Pile Capacity Under Tension and Compressive Loading in Dense Sand. Buildings, 2025; 15: 2683.
  8. Ebadi-Jamkhaneh, M., Arjomand, M. A., Bagheri, M., Asgari, A., Nouhi Hefzabad, P., Salahi, S., Mostafaei, Y. Experimental Study on the Pullout Behavior of Helical Piles in Geogrid-Reinforced Dense Shahriyar Sand. Buildings, 2025; 15: 2963.
  9. Asgari, A., Ranjbar, F., Bagheri, M. Seismic resilience of pile groups to lateral spreading in liquefiable soils: 3D parallel finite element modeling. Structures, 2025; 74: 108578. doi:10.1016/j.istruc.2025.108578.
  10. Asadoullahtabar, S. R., Asgari, A., Mohammad Rezapour Tabari, M. Assessment, identifying, and presenting a plan for the stabilization of loessic soils exposed to scouring in the path of gas pipelines, case study: Maraveh-Tappeh city. Engineering Geology, 2024; 342: 107747. doi:10.1016/j.enggeo.2024.107747.
  11. Bagheri, M., Ranjbar Malidarreh, N., Ghaseminejad, V., Asgari, A. Seismic resilience assessment of RC superstructures on long–short combined piled raft foundations: 3D SSI modeling with pounding effects. Structures, 2025; 81: 110176. doi:10.1016/j.istruc.2025.110176.
  12. Asgari, A., Bagheri, M., Hadizadeh, M. Advanced seismic analysis of soil-foundation-structure interaction for shallow and pile foundations in saturated and dry deposits: Insights from 3D parallel finite element modeling. Structures, 2024; 69: 107503. doi:10.1016/j.istruc.2024.107503.
  13. Shooshpasha, I., Bagheri, M. The effects of surcharge on liquefaction resistance of silty sand. Arabian Journal of Geosciences, 2014; 7: 1029-1035. doi:10.1007/s12517-012-0737-9.
  14. Asgari, A. L. I., Golshani, A., Bagheri, M. Numerical evaluation of seismic response of shallow foundation on loose silt and silty sand. Journal of Earth System Science, 2014; 123: 365-379. doi:10.1007/s12040-013-0393-9.
  15. Nepal, B., Yadav, S. K. Numerical Study of Bearing Capacity under Strip Footing having Underground Void. In: Proceedings of 14th IOE Graduate Conference; 2023 Nov 29-Dec 1; lalitpur, Nepal. p. 727-731.
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