ИССЛЕДОВАНИЕ НЕСУЩЕЙ СПОСОБНОСТИ СВАЙ С ВЕРХНИМ ОГОЛОВКОМ И ЛОКАЛЬНЫМ СУЖЕНИЕМ СТВОЛА С ИСПОЛЬЗОВАНИЕМ ТЕХНОЛОГИИ «ПРОЗРАЧНОГО ГРУНТА» Characteristic investigation of bearing performance for necking pile with cap assisted with transparent soil technology

Zhijun Xu, Zhaoxiang Guo, Zhengquan Wang, Le Wang, Liang Fan

Аннотация


Рассматриваются результаты исследований влияния локального сужения ствола буронабивной сваи с наголовником, вызванного вывалами грунта со стенок скважины, на ее несущую способность. Исследования проведены в лабораторных условиях на моделях свай поляризационно-оптическим методом в искусственных песчаных и глинистых грунтах. Исследование сосредоточено на изучении несущей способности под действием вертикальной нагрузки с учетом положения и диаметра сужения. Результаты показали, что наличие «шейки» значительно ограничивает устойчивость сваи. Кроме того, обнаружено, что влияние сужения более выражено, когда оно расположено ближе к верхушке сваи и увеличивается с уменьшением его диаметра. Показано, что при расположении перемычки рядом с верхушкой сваи потеря несущей способности может достигать 31,19% по сравнению с неповрежденной сваей.


Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.63, No.1


Литература


C. S. Wu, J. Q. Zhang, L. L. Qi, and D. B. Zhuo, “Defect Identification of Concrete Piles Based on Numerical Simulation and Convolutional Neural Network,” Buildings-Basel, 12 (5), 664 (2022).

J. S. Lee, J. U. Song, W. T. Hong, and J. D. Yu, “Application of time domain reflectometer for detecting necking defects in bored piles,” NDT and E International, 100, 132-141 (2018).

D. Q. Li, W. H. Tang, and L. M. Zhang, “Updating occurrence probability and size of defect for bored piles.,” Structural Safety, 30 (2), 130-143 (2008).

Z. Y. Li, “Key problems investigation on non-destructive integrity detection of piles with elevated-cap (beam),” M.Eng. thesis, Zhejiang University, Hangzhou, China (2017).

Y. T. Pan, Y. Liu, A. Tyagi, F. H. Lee, and D. Q. Li, “Model-Independent Strength-Reduction Factor for Effect of Spatial Variability on Tunnel with Improved Soil Surrounds,” Géotechnique, 71 (5), 406-422 (2019).

K. Petek, C. W. Felice, and R. D. Holtz, “Capacity analysis of drilled shafts with defects,” Deep Foundations, 256 (80), 1120-1135 (2002).

H. G. Poulos, “Pile behavior-consequences of geological and construction imperfections. J. Geotech,” Geomechanics and Engineering, 131(05), 538-563 (2005).

Y. Zhang, H. Liu, W. Wu, L. X. Wang, and G. S. Jiang, “A 3D analytical model for distributed low strain test and parallel seismic test of pipe piles,” Ocean Engineering, 225, 108828 (2021).

G. Anoyatis and G. Mylonakis, “Dynamic Winkler Modulus for Axially Loaded Piles,” Géotechnique, 62 (6), 521-536 (2012).

M. Samman, and M. W. O'Neill, “The reliability of sonic testing of drilled shafts,” Concrete International, 19 (1), 49-54 (1997).

M. Iskander, D. Roy, S. Kelley, and C. Ealy, “Drilled shaft defects: detection, and effects on capacity in varved clay,” J. Geotech. Geoenviron. Eng, 129 (12), 1128-1137 (2003).

D. Q. Li, L. M. Zhang, and W. H. Tang, “Reliability evaluation of cross-hole sonic logging for bored pile integrity,” J. Geotech. Geoenviron. Eng, 131 (9), 1130-1138 (2005).

J. Jiang, D. J. Liu, Z. T. Lu, J. Tao, and H. X. Liu, “A study on low strain integrity testing of platform-pile system using staggered grid finite difference method,” Soil Dyn Earthq Eng, 67 (14), 345-352 (2014).

S. H. Ni, Y. Z. Yang, P. H. Tsai, and W. H. Chou, “Evaluation of pile defects using complex continuous wavelet transform analysis,” NDT & E INTERNATIONAL, 87 (8), 50-59 (2017).

B. Singh, V. V. Arora, V. Patel, and N. Chowdhary, “Non-destructive testing of bored piles using the low strain pile integrity method,” The Indian Concrete Journal, 93 (5), 41-48 (2019).

Z. J. Xu, J. Liu, J. Zhang, and F. Yuan, “Development of Measurement Equipment of Toe Debris Thickness for Bored Piles” J. Huazhong Univ. of Sci. & Tech. (Natural Science Edition) (In Chinese),47 (2), 19-23 (2019).

P. J. R. Albuquerque, J. R. Garcia, O. D. F. Neto, and R. P. Cunha, “Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression,” Soils Rocks, 40 (2), 109-121 (2017).

S. Liu, Q. Zhang, C. Cui, R. F. Feng, and W. Cui, “A simplified approach for the response of pile groups composed of dissimilar piles,” Structures, 34, 4548-4559 (2021).

B. X. Yuan, M. Sun, Y. X. Wang, and L. H. Zhai, “Full 3D Displacement Measuring System for 3D Displacement Field of Soil around a Laterally Loaded Pile in Transparent Soil,” International Journal of Geomechanics, 19 (5), 28-35 (2019).

D. Zhou, and W. G. Zhang, “Transparent Soil Model Test on Displacement Field of Soils around Single Passive Pile,” International conference on geotechnical and earthquake engineering, 8 (5), 652-659 (2018).

S. Nohara, and T. Mukunoki, “Quantitative Evaluation of Soil Structure and Strain in Three Dimensions under Shear Using X-ray Computed Tomography Image Analysis,” Journal of Imaging, 7 (11), 230 (2021).

Hillnhütter C, Sikora R A, Oerke E-C, and van Dusschoten D, “Nuclear magnetic resonance: a tool for imaging belowground damage caused by Heterodera schachtii and Rhizoctonia solani on sugar beet,” J Exp Bot, 63 (1), 319-27 (2012).

H. J. Pincus, M. G. Iskander, J. Lai, and C. J. Oswald, “Development of a Transparent Material to Model the Geotechnical Properties of Soils,” Geotechnical Testing Journal, 17 (4), 425-433 (1994).

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

C. C. Hird, Q. Ni, and I. Guymer, “Physical modeling of deformations around piling augers in clay,” Géotechnique, 61 (11), 993-999 (2011).

G. Q. Kong, Z. H. Cao, H. Zhou, and X. J. Sun, “Analysis of Piles Under Oblique Pullout Load Using Transparent-Soil Models,” Geotech Test J, 38 (5), 725-738 (2015).

Y. Sang, S. K. Yu, Z. T. Wang, and H. H. Zhao, “The Loading Test on the Singe Pile with Pile Cap in Transparent Soil Model,” Geotechnical Testing Journal, 42 (2), 385-406 (2019).

X. H. Ding, W. Zhou, X. Lu, and Y. Gao, “Physical simulation test of soil-rock mixture from synthetic transparent soil,” Journal of Central South University, 25 (12), 3085-3097 (2018).

G. Q. Kong, H. Li, G. Yang, and Z. H. Cao, “Investigation on shear modulus and damping ratio of transparent soils with different pore fluids,” Granular Matter, 20 (1), 1-8 (2018).

S. Iai, “Similitude for Shaking Table Tests on Soil-Structure-Fluid Model in 1g Gravitational Field,” Soils Found, 29 (1), 05-118 (1989).

CABR China Academy of Building Research GB5007-2011, Code for design building foundation, China Architecture & Building Press (in Chinese) 33 (2011).

C. Liu, X. W. Tang, H. W. Wei, P. P. Wang, and H. H. Zhao, “Model Tests of Jacked-Pile Penetration into Sand Using Transparent Soil and Incremental Particle Image Velocimetry,” KSCE Journal of Civil Engineering, 24 (4), 1128-1145 (2020).

CABR China Academy of Building Research JGJ106-2014, Technical code for testing of building foundation piles, China Architecture & Building Press (in Chinese) 13-15 (2014).

J. Y. Liu and M. Iskander, “Modelling capacity of transparent soil,” CANADIAN GEOTECHNICAL JOURNAL, 47 (4), 451-460 (2010).

S. Bhardwaj and S. K. Singh, “Ultimate capacity of battered micropiles under oblique pullout loads,” J. Geotech. Geoenviron. Eng, 9 (2), 190-200 (2015).

K. Faizi, D. J. Armaghani, H. Sohaei, A. S. A. Rashid, and R. Nazir, “Deformation model of sand around short piles under pullout test,” Measurement, 63 (6), 110-119 (2015).

J. J. Zhou, X. N. Gong, R. H. Zhang, M. H. E. Naggar, and K. H. Wang, “Field behavior of pre-bored grouted planted nodular pile embedded in deep clayey soil,” Acta Geotechnica, 15 (7), 1847-1857 (2019).

K. R. Massarsch and C. Wersall, “Cumulative lateral soil displacement due to pile driving in soft clay,” Geo-Congress, 462-479 (2013).

Y. H. Wang, S. K. Sang, X. Y. Liu, Y. F. Huang, M. Y. Zhang, and D. Z. Miao, “Model Test of Jacked Pile Penetration Process Considering Influence of Pile Diameter,” Frontiers in Physics, 9, 616410 (2021).


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