НЕСУЩАЯ СПОСОБНОСТЬ КВАДРАТНОЙ ПЛИТЫ С ОГРАЖДАЮЩИМИ ЭЛЕМЕНТАМИ В НЕСВЯЗНОМ ГРУНТЕ ПРИ НАКЛОННОЙ НАГРУЗКЕ Bearing Capacity of Skirted Square Footing under Inclined Loading in Granular Soil

Atish Kumar Das, Chittaranjan Patra, Khaled Sobhan

Аннотация


Несущая способность неглубокого плитного фундамента уменьшается, когда на него воздействует наклонная нагрузка. Снижение несущей способности из-за наклона нагрузки может быть компенсировано за счет создания конструктивного ограждения основания по периферии плиты. Лабораторные испытания проводились на модели квадратного фундамента с бортиками переменной длины при различной глубине заделки в несвязный грунт. Обнаружено, что несущая способность уменьшается с увеличением угла наклона нагрузки. Фундамент с ограждающими элементами, длина которых совпадала с шириной, повышает максимальную несущую способность примерно в 3,8 раза по сравнению с обычной незаглубленной плитой при наклоне нагрузки 15°. На основе результатов испытаний разработаны эмпирические зависимости для оценки предельной несущей способности плиты с ограждающими элементами различной длины при наклоне нагрузки.


Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.62, No.6


Литература


G. G. Meyerhof, "The bearing capacity of foundations under eccentric and inclined loads," In Proceedings of 3rd International Conference on Soil Mechanics and Foundation Engineering, Zurich, Switzerland, Vol. 1, 440-445 (1953).

J. B. Hansen, "A Revised and Extended Formula for Bearing Capacity," Bulletin of the Danish Geotechnical Institute, 28, 5–11(1970).

S. Saran, S. Prakash, and A. V. S. R. Murty, "Bearing capacity of footings under inclined loads," Soils and Foundations, 11(1), 47-52 (1971).

H. Muhs, and K. Weiss, "Inclined load tests on shallow strip footings," In Proceding of 8th International Conference on Soil Mechanics and Foundation Engineering, Moscow, 1.3 (1973).

A. S. Vesic, "Bearing capacity of shallow foundations." Foundation Engineering Handbook, Van Nostrand Reinhold, New York, 121–147(1975).

D. Loukidis, T. Chakraborty, and R. Salgado, "Bearing capacity of strip footings on purely frictional soil under eccentric and inclined loads," Canadian Geotechnical Journal, 45(6), 768–787 (2008). doi: 10.1139/T08-015.

C. R. Patra, R. N. Behara, N. Sivakugan, and B. M. Das, "Ultimate bearing capacity of shallow strip foundation under eccentrically inclined load, Part I," International Journal of Geotechnical Engineering, 6(3), 343–352 (2012). doi: 10.3328/IJGE.2012.06.03.343-352.

A. Z. El Wakil, "Horizontal capacity of skirted circular shallow footings on sand," Alexandria Engineering Journal, 49(4),.379-385 (2010). doi: 10.1016/j.aej.2010.07.003.

M. Y. Al-Aghbari, and R. K. Dutta, "Performance of square footing with structural skirt resting on sand," Geomechanics and Geoengineering, 3(4), 271–277 (2008). doi: 10.1080/17486020802509393.

H. T. Eid, "Bearing Capacity and Settlement of Skirted Shallow Foundations on Sand," International Journal of Geomechanics, 13(5), 645–652 (2013). doi: 10.1061/(asce)gm.1943-5622.0000237.

V. N. Khatri, S. P. Debbarma, R. K. Dutta, and B. Mohanty, "Pressure-settlement behavior of square and rectangular skirted footings resting on sand," Geomechanics and Engineering, 12(4), 689–705 (2017). doi: 10.12989/gae.2017.12.4.689.

G. Sajjad, , and M. Masoud, "Study of the behaviour of skirted shallow foundations resting on sand," International Journal of Physical Modelling in Geotechnics, 18(3),117–130 (2018). doi: 10.1680/jphmg.16.00079.

A. Thakur, and R. K. Dutta, "A Study on Bearing Capacity of Skirted Square Footings on Different Sands," Indian Geotechnical Journal, 50(6), 1057–1073 (2020). doi: 10.1007/s40098-020-00440-4.

J. G. Hwang, Y. W. Yoon, and K. I. Song, "Improvement of bearing capacity of Shallow Foundation with the wall attached to the base-slab: model test," KSCE Journal of Civil Engineering, 25(4), 1276-1282 (2021). doi: 10.1007/s12205-021-1124-4.

M. Örnek, M. Çalişici, Y. Türedi, and N. Kaya, "Investigation of skirt effect on eccentrically loaded model strip footing using laboratory tests," Soil Mechanics and Foundation Engineering, 58(3), 215-222 (2021).

H. Moghadam Joybari, M. Afzalirad, H. Hosseinzadeh, and B. P. Naveen, "Behavior of skirted foundations under vertical load by numerical and physical modeling methods," Arabian Journal of Geosciences, 16(12), 661 (2023). doi: 10.1007/s12517-023-11759-6.

M. Y. Al-Aghbari, Y. Mohamedzein, and H. Al-Nasseri, "Potential use of structural skirts towards improving the bearing capacity of shallow footings exposed to inclined loadings," International Journal of Geotechnical Engineering, 15(10), 1278-1283 (2021).

O. Kusakabe, Chapter 6: Foundations. In Geotechnical centrifuge technology, edited by R. N. Taylor, Blackie Academic and Professional, London, 118–167 (1995).

ASTM. 2006. Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System). ASTM D2487-17e1. West Conshohocken, PA: ASTM. doi: 10.1520/D2487-17E01.2.

T. N. Dave, and S. M. Dasaka, "Assessment of portable traveling pluviator to prepare reconstituted sand specimens," Geomechanics and Engineering, 4(2), 79–90 (2012). doi: 10.12989/gae.2012.4.2.079.

V. K. Gade, and S. M. Dasaka, "Development of a Mechanized Traveling Pluviator to Prepare Reconstituted Uniform Sand Specimens," Journal of Materials in Civil Engineering, 28(2), 4015117 (2016). doi: 10.1061/(asce)mt.1943-5533.0001396.

T. Wichtmann, K. Steller, and T. Triantafyllidis, "On the influence of the sample preparation method on strain accumulation in sand under high-cyclic loading." Soil Dynamics and Earthquake Engineering, 131. 106028 (2020). doi: 10.1016/j.soildyn.2019.106028.

G. G. Meyerhof, "Influence of roughness of base and ground-water conditions on the ultimate bearing capacity of foundations," Geotechnique, 5(3), 227-242 (1955).

ASTM. 2016. Standard test method for nonrepetitive static plate load tests of soils and flexible pavement components, for use in evaluation and design of airport and highway pavements. ASTM D1196. West Conshohocken, PA: ASTM. doi: 10.1520/D1196_D1196M-21.

M. Mosallanezhad, N. Hataf, and A. Ghahramani, "Experimental study of bearing capacity of granular soils, reinforced with innovative grid-anchor system," Geotechnical and Geological Engineering, 26(3), 299–312. (2008). doi: 10.1007/s10706-007-9166-z.

A. K. Das, C. Patra, and K. Sobhan, "Bearing capacity of a skirted square footing under eccentric loading in granular soil," International Journal of Geomechanics, Vol. 24, Issue 5 (2024). doi: 10.1061/IJGNAI/GMENG-9211.


Ссылки

  • На текущий момент ссылки отсутствуют.