Reinforcement Effects on the Permanent Settlement of Sandy Slopes under Cyclic Loading

Document Type : Research Article

Author

Department of Civil Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran.

Abstract

Several strategies have been used to improve the engineering characteristics of soils for many years. However, in the last 50 years, advances in human knowledge of soil behavior and geotechnical hazards, on the one hand, and advances in other sciences like chemistry, on the other, have resulted in the development of creative methods for modifying soil specifications. The effect of a grid anchor as soil reinforcement on the settlement of strip foundations resting on sand slopes under cyclic loading is investigated in this study. Vehicle traffic, machine foundation, or loading and unloading due to filling and discharging oil tanks can all contribute to this loading. The effect of several variables on the permanent settlement of the strip foundation was investigated in this study, including the number of loading and unloading cycles, the number of reinforcing layers, the kind of reinforcement, and the ratio of cyclic load amplitude to static loading. The results reveal that as the number of loading and unloading cycles and the cyclic loading amplitude rose, the quantity of permanent settlement increased. However, it decreased as the number of reinforcement layers increased. The differences of permanent settlement and the number of loading cycles required to reach it have been examined based on the findings.

Keywords

Main Subjects

References

  1. G. Zornberg, N. Sitar, J.K. Mitchell, Performance of geosynthetic reinforced slopes at failure, Journal of Geotechnical and Geoenvironmental Engineering, 124(8) (1998) 670-683.
  2. Mosallanezhad, N. Hataf, A. Ghahramani, Experimental study of bearing capacity of granular soils, reinforced with innovative grid-anchor system, Geotechnical and Geological Engineering, 26(3) (2008) 299-312.
  3. Boushehrian, N. Hataf, A. Ghahramani, Modeling of the cyclic behavior of shallow foundations resting on geomesh and grid-anchor reinforced sand, Geotextiles and Geomembranes, 29(3) (2011) 242-248.
  4. Hajiani Boushehrian, A. Vafamand, S. Kohan, Investigating the experimental behavior of the reinforcements effect on the railway traverse under the dynamic load, Scientia Iranica, 24(5) (2017) 2253-2261.
  5. Hataf, A. Boushehrian, A. Ghahramani, Experimental and numerical behavior of shallow foundations on sand reinforced with geogrid and grid anchor under cyclic loading, (2010).
  6. Correia, J. Zornberg, Strain distribution along geogrid-reinforced asphalt overlays under traffic loading, Geotextiles and Geomembranes, 46(1) (2018) 111-120.
  7. T. Mehrjardi, M. Khazaei, Scale effect on the behavior of geogrid-reinforced soil under repeated loads, Geotextiles and Geomembranes, 45(6) (2017) 603-615.
  8. Mehrpazhouh, S.N.M. Tafreshi, M. Mirzababaei, Impact of repeated loading on mechanical response of a reinforced sand, Journal of Rock Mechanics and Geotechnical Engineering, 11(4) (2019) 804-814.
  9. Shin, D. Kim, B. Das, Geogrid-reinforced railroad bed settlement due to cyclic load, Geotechnical & Geological Engineering, 20(3) (2002) 261-271.
  10. Shin, B. Das, Dynamic behavior of geogrid-reinforced sand, KSCE journal of civil engineering, 3(4) (1999) 379-386.
  11. M. Tafreshi, A. Dawson, Behaviour of footings on reinforced sand subjected to repeated loading–Comparing use of 3D and planar geotextile, Geotextiles and Geomembranes, 28(5) (2010) 434-447.
  12. H. Boushehrian, A. Afzali, Experimental investigation of dynamic behavior of shallow foundation resting on the reinforced sand with embedded pipes, International Journal of Geography and Geology, 5(9) (2016) 182-193.
  13. El Sawwaf, A.K. Nazir, Behavior of repeatedly loaded rectangular footings resting on reinforced sand, Alexandria Engineering Journal, 49(4) (2010) 349-356.
  14. Halder, D. Chakraborty, Bearing capacity of strip footing placed on the reinforced soil slope, International Journal of Geomechanics, 18(11) (2018) 06018025.
  15. Halder, D. Chakraborty, Effect of interface friction angle between soil and reinforcement on bearing capacity of strip footing placed on reinforced slope, International Journal of Geomechanics, 19(5) (2019) 06019008.
  16. Alamshahi, N. Hataf, Bearing capacity of strip footings on sand slopes reinforced with geogrid and grid-anchor, Geotextiles and Geomembranes, 27(3) (2009) 217-226.
  17. Ghazavi, H. Mirzaeifar, Bearing capacity of multi-edge shallow foundations on geogrid-reinforced sand, in: Proceedings of the 4th International Conference on Geotechnical Engineering and Soil Mechanics, 2010, pp. 1-9.
  18. Sitharam, S. Sireesh, Behavior of embedded footings supported on geogrid cell reinforced foundation beds, Geotechnical testing journal, 28(5) (2005) 452-463.
  19. Zidan, Numerical study of behavior of circular footing on geogrid-reinforced sand under static and dynamic loading, Geotechnical and Geological Engineering, 30(2) (2012) 499-510.
  20. M. Makkar, S. Chandrakaran, N. Sankar, Behaviour of model square footing resting on sand reinforced with three-dimensional geogrid, International Journal of Geosynthetics and Ground Engineering, 3(1) (2017) 3.
  21. A. El Sawwaf, A.K. Nazir, Cyclic settlement behavior of strip footings resting on reinforced layered sand slope, Journal of Advanced Research, 3(4) (2012) 315-324.
  22. Islam, C. Gnanendran, Slope stability under cyclic foundation loading-Effect of loading frequency, in: Geo-Congress 2013: Stability and Performance of Slopes and Embankments III, 2013, pp. 750-761.
  23. J.I. Alam, C. Gnanendran, S. Lo, Experimental and numerical investigations of the behavior of footing on geosynthetic reinforced fill slope under cyclic loading, Geotextiles and Geomembranes, 46(6) (2018) 848-859.
  24. A.R., Soil Mechanics, Affiliated East-West Press Pvt. Ltd., New Delhi, (1967).

 

AUT Journal of Civil Engineering
Volume 5, Issue 3
September 2021
Pages 389-402

Files

Share

How to cite

Statistics