ВЛИЯНИЕ КОНСТРУКТИВНЫХ ПАРАМЕТРОВ АНКЕРОВ НА ИХ НЕСУЩУЮ СПОСОБНОСТЬ Investigation on the working mechanism and structural parameters optimization of multiple ball shaped nodular anchors

Chen Chen, Yuanyou Xia, Qing Ni

Аннотация


В статье представлены результаты маломасштабного физического моделирования напряженно-деформированного состояния основания грунтовых анкеров с разбуренными шаровидными уширениями. Проведены серии численных исследований для изучения влияния параметров анкерной конструкции на несущую способность при выдергивании. Выполнен анализ полей перемещений, определены контуры поверхностей сдвига для разных конструкций анкеров. Построены графики "нагрузка-осадка" и определены предельные нагрузки на анкер. Даны рекомендации по определению оптимальных геометрических параметров, обеспечивающих максимальную несущую способность исследованных анкерных конструкций.


Литература


C. Prakash and VVGST Ramakrishna, “Lateral load capacity of underreamed piles-an analytical approach,” Soils and Foundations, 44(5), 51-65 (2004).

A. G. Alekseev, S. G. Bezvolev, and P. M. Sazonov, “Experience of using multi-blade screw piles in silt-loam soil foundation,” Soil Mechanics and Foundation Engineering, 55(6), 388-393 (2019).

H. Niroumand and K. A. Kassim, “Uplift response of irregular shape anchor in sand,” Soil Mechanics and Foundation Engineering, 51(1), 23-28 (2014).

K. Min, J. Lee, D. Lee, and C. Jung, “The evaluation of bearing resistance of underreamed ground anchor through realistic model experiments,” Journal of the Korean Geo-Environmental Society, 15(9), 87-92 (2014).

J. J. Zhou, K. H. Wang, X. N. Gong, and R. H. Zhang, “Bearing capacity and load transfer mechanism of a static drill rooted nodular pile in soft soil areas,” Journal of Zhejiang University-SCIENCE A(Applied Physices & Engineering), 14(10), 705-719 (2013).

M. A. Shahin and M. B. Jaksa, “Pullout capacity of small ground anchors by direct cone penetration test methods and neural networks,” Canadian Geotechnical Journal, 43(6), 626-637 (2006).

S. A. Rafa and B. Moussai, “Three- dimensional analyses of bored pile and barrette load tests subjected to vertical loadings,” Soil Mechanics and Foundation Engineering, 55(3), 146-152 (2018).

A. J. Khan, G. Mostofa, and R. Jadid, “Pullout resistance of concrete anchor block embedded in cohesionless soil,” Geomechanics and Engineering, 12(4), 675-688 (2017).

H. P. Park, S. R. Lee, N. K. Kim, and T. H. Kim, “A numerical study of the pullout behavior of grout anchors underreamed by pulse discharge technology,” Computers and Geotechnics, 47, 78-90 (2013).

M. G. Iskander, J. Liu, and S. Sadek, “Transparent amorphous silica to model clay,” Journal of Geotechnical and Geoenvironmental Engineering, 128(3), 262–273 (2002).

J. Liu, M. G. Iskander, and S. Sadek, “Consolidation and permeability of transparent amorphous silica,” Geotechnical Testing Journal, 26(4), 390-401 (2003).

X. Yang, Y. Sun, and F. Yin, “Constitutive modeling for transparent granular soils,” International Journal of Geomechanics. 17 (7), DOI:10.1061/(asce)gm.1943-5622.0000857 04016150 (2017).

D. J. White, W. A. Take, and M. D. Bolton, “Soil deformation measurement using particle image velocimetry (PIV) and photo grammetry,” Géotechnique, 53(7), 619–631 (2003).

Q. Ni, C. C. Hird, and I. Guymer, “Physical modelling of pile penetration in clay using transparent soil and particle image velocimetry,” Géotechnique, 60(2), 121–132 (2010).

Y. Y. Xia, C. Chen, and Q. Ni, “Comparative modelling of pull-out process of four different anchorages by using transparent soil,” Journal of Geotechnical Engineering (Chinese), 39(3), 399-407 (2017a).

Y. Y. Xia, C. Chen, and Q. Ni, “Research on continuous ball shape anchorages pulling-out mechanism by using transparent soil,” Journal of Geotechnical Engineering (Chinese), 39(5):804-812 (2017b).

BS 8081, British Standard Code of practice for grouted anchors, UDC 624.137.6. British Standards Institution, London (2015).

BS 8081, British Standard Code of practice for ground anchorages, UDC 624.137.6, Civil Engineering and Building Structures Standards Policy Committee, British Standards Institution, London (1989).

G. S. Littlejohn, “Design estimation of the ultimate load-holding capacity of ground anchors,” Ground Engineering, 13(8), 25-39 (1980).


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