Effect of foundation surface roughness on ultimate bearing capacity of an eccentrically loaded foundation
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Author
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Pham Ngoc VinhThe University of Danang - University of Science and Technology, Danang, VietnamPham Ngoc QuangThe University of Danang - University of Science and Technology, Danang, VietnamHoang ThangThe University of Danang - University of Science and Technology, Danang, Vietnam
Từ khóa:
Ultimate bearing capacity
Shallow foundation
Sandy soil
Foundation roughness
Eccentric load
RPFEM
Tóm tắt
The study extensively investigated the ultimate bearing capacity (UBC) of an eccentrically loaded foundation under two scenarios (horizontal sandy soil and sandy soil slope), utilizing the Rigid Plastic Finite Element Method (RPFEM). To precisely simulate a diverse range of frictional conditions on the foundation surface roughness, a novel joint element is introduced, capable of accommodating both perfectly rough and perfectly smooth foundations. A novel constitutive equation is presented to model these joint elements, significantly influencing the failure mechanism of the shallow foundation. The study also examines the impact of the friction strength ϕ on the normalized vertical load V/Vult. The RPFEM results reveal that the friction strength ϕ substantially influences the V/Vult ratio for sandy soil slopes, while its effect is found to be negligible for horizontal sandy soil.
Tài liệu tham khảo
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[1] Meyerhof, "The bearing capacity of foundations under eccentric and inclined loads”, In Proc. of 3rd ICSMFE, vol. 1, 1953, pp. 440-445.
[2] T. Loukidis, Chakraborty, and R. Salgado, "Bearing capacity of strip footings on purely frictional soil under eccentric and inclined loads”, Canadian Geotechnical Journal, vol. 45, no. 6, pp. 768-787, 2008.
[3] Tang, P. Kok-Kwang, and T. Kim-Chuan, "Effect of footing width on Nγ and failure envelope of eccentrically and obliquely loaded strip footings on sand”, Canadian Geotechnical Journal, vol. 52, no. 6, pp.694-707, 2015.
[4] N Quang, S. Ohtsuka, K. Isobe, Y. Fukumoto, and T. Hoshina, "Ultimate bearing capacity of rigid footing under eccentric vertical load”, Soils and Foundations, Vol. 59, no. 6, pp.1980-1991, 2019.
[5] N. Quang, S. Ohtsuka, K. Isobe, and Y. Fukumoto, "Limit load space of rigid footing under eccentrically inclined load”, Soils and Foundations, vol. 60, no. 4, pp. 811-824, 2020.
[6] Tamura, K. Shoichi, and S. Tetsuya, "Limit analysis of soil structure by rigid plastic finite element method”, Soils and Foundations, vol. 24, no. 1, pp. 34-42, 2020.
[7] Tamura, K. Shoichi, and S. Tetsuya, "Rigid-plastic finite element method for frictional materials”, Soils and Foundations, vol. 27, no. 3, pp. 1-12, 1987.
[8] Tamura, "Rigid-plastic finite element method in geotechnical engineering”, In Computational Plasticity, Current Japanese Material Research, 1990.
[9] Asaoka and S. Ohtsuka, "The analysis of failure of a normally consolidated clay foundation under embankment loading”, Soils and Foundations, vol. 26, no. 2, pp. 47-59, 1986.
[10] Asaoka and S. Ohtsuka, "Bearing capacity analysis of a normally consolidated clay foundation”, Soils and foundations, vol. 27, no. 3, pp. 58-70, 1987.
[11] Asaoka, S. Ohtsuka, and M. Minoru, "Coupling analyses of limiting equilibrium state for normally consolidated and lightly overconsolidated soils”, Soils and Foundations, vol. 30, no. 3, pp. 109-123, 1990.
[12] N. Quang and S. Ohtsuka, "Ultimate bearing capacity of rigid footing on two-layered soils of sand–clay”, International Journal of Geomechanics, vol. 21, no. 7, 04021115, 2021.
[13] N. Quang, S. Ohtsuka, K. Isobe, and Y. Fukumoto, "Limit load space of rigid strip footing on cohesive-frictional soil subjected to eccentrically inclined loads”, Computers and Geotechnics, vol. 151, 104956, 2022.
[14] N. Quang, S. Ohtsuka, K. Isobe, P. N. Vinh, and H. P. Hoa, "Limit load space of rigid strip footing on sand slope subjected to combined eccentric and inclined loading”, Computers and Geotechnics, vol. 162, 105652, 2023.
[15] Hoshina, "Rigid plastic stability analysis for slope including thin weak layer”, Geotech. J. , vol. 6, no. 2, pp. 191-200, 2011.
[16] D. Nguyen, S. Ohtsuka, T. Hoshina, and K. Isobe, "Discussion on size effect of footing in ultimate bearing capacity of sandy soil using rigid plastic finite element method”, Soils and foundations, vol. 56, no. 1, pp. 93-103, 2016.
[17] N. Quang, S. Ohtsuka, K. Isobe, and Y. Fukumoto, "Group effect on ultimate lateral resistance of piles against uniform ground movement”, Soils and Foundations, vol. 59, no. 1, pp. 27-40, 2019.
[18] Guetari, B. Sadok, and M. S. Remadna, "Effect of the eccentric load on the bearing capacity of a strip footing founded on sand”, Journal of Applied Engineering Science & Technology, vol. 4, no. 2, pp. 171-176, 2018.
[19] N. Quang and S. Ohtsuka, "Numerical Investigation on Bearing Capacity of Rigid Footing on Sandy Soils Under Eccentrically Inclined Load”, In Proceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering: Sustainable Energy and Marine Planning, Springer Singapore, 2022, pp. 333-341.
[20] N. Quang, S. Ohtsuka, K. Isobe, and Y. Fukumoto, "Consideration on Limit Load Space of Footing on Various Soils Under Eccentric Vertical Load”, In Challenges and Innovations in Geomechanics: Proceedings of the 16th International Conference of IACMAG, volume 126, Springer International Publishing, 2021, pp. 75-84.
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Dec 31, 2023
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Cách trích dẫn
Vinh, P. N., P. N. Quang, và H. Thang. “Effect of Foundation Surface Roughness on Ultimate Bearing Capacity of an Eccentrically Loaded Foundation”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 21, số p.h 12.1, Tháng Chạp 2023, tr 28-33, doi:10.31130/ud-jst.2023.582E.
