Static loading tests on small-scale pile groups
Email:
lan.bachvuhoang@uah.edu.vn
Từ khóa:
Pile groups, Static load test, Pile group efficiency, Settlement ratio, Load distribution per pile.
Tóm tắt
36 small-scale model tests in soft clay were conducted to research the performances of pile groups under rigid caps. The parameters studied were the effect of pile length, pile spacing, and the number of piles in a group. The group piles consisted of 4, 6, and 9 circular model piles of 16mm in outer diameter (D), while four kinds of the pile spacing between pile centers 3; 4; 5; and 6 times of the diameter and three types of the embedded pile lengths: 20D; 25D; and 30D were used. For comparison, three single piles with the same diameter and length were also tested under the same condition. The experimental results were discussed based on the following 3 points of view: the pile group efficiency, the settlement ratio, load distribution per pile location in the group pile. All discussion suggested that the pile number and pile spacing in a pile group caused a remarkable interactional effect between piles, whereas the settlement ratios are significantly affected by the pile length. Besides, each pile in the group of 6D pile spacing behaved more individually.Tài liệu tham khảo
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[2]. Bolin, H. W.: The pile efficiency formula of the Uniform Building Code, Bldg. Standards Monthly, 10(1), pp 4-5 (1941).
[3]. J. Garnier et al., Catalogue of scaling laws and similitude questions in Geotechnical cetrifuge modeling, International Journal of Physical Modelling in Geotechnics, 3 (2007) 1-23. https://doi.org/10.13140/2.1.1615.3281
[4]. Goto S., Aoyama S., Liu B., Towhata I., Akita A., and Renzo A.A.: Model loading tests in large soil tank on group behavior of pies. Proceeding of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013. pp 2731-2734.
[5]. Feld, J.: Discussion on friction pile foundations. Transactions of the American Society of Civil Engineers 108, pp 143-144 (1943)
[6]. Itoh, A. and Yamagata, K.: Vertical Loading Test of Model Group piles (Part 3: Influence of Pile Spacing). Proceedings of Annual conference AIJ, Structure. pp. 661-662. (1988)
[7]. P. Kytiyodom et al., Influence of reaction piles on the behaviour of a test pile in stactic load testing, Canadian Geotechnical Journal, 41 (2004) 408-420. https://doi.org/10.1139/t03-098
[8]. M. Randolph, P. Clancy, Efficient design of piled rafts, Proc. of Deep Foundation on Bored and Auger Piles, Ghent, Belgium, 1993, pp. 119-130.
[9]. J. D. Patil et al., An experiment study on behavior of piled raft foundation, Indian Geotechnical Journal, 46 (2016) 16-24. https://doi.org/10.1007/s40098-015-0145-7
[10]. A. B. Vesic, Bearing Capacity of Deep Foundations in Sand. Committee on Stress Distribution in Earth Masses, 1963, pp. 112-153.
[11]. T. Whitaker, Experiments with Model Piles in Groups, Geotechnique, 7 (1957) 147-167. https://doi.org/10.1680/geot.1957.7.4.147
[12]. Y. Zhang et al., Load test on Full- scale bored pile groups, Proceeding of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, 2013, pp. 2909-2912. https://www.cfms-sols.org/sites/default/files/Actes/2909-2912.pdf
[2]. Bolin, H. W.: The pile efficiency formula of the Uniform Building Code, Bldg. Standards Monthly, 10(1), pp 4-5 (1941).
[3]. J. Garnier et al., Catalogue of scaling laws and similitude questions in Geotechnical cetrifuge modeling, International Journal of Physical Modelling in Geotechnics, 3 (2007) 1-23. https://doi.org/10.13140/2.1.1615.3281
[4]. Goto S., Aoyama S., Liu B., Towhata I., Akita A., and Renzo A.A.: Model loading tests in large soil tank on group behavior of pies. Proceeding of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013. pp 2731-2734.
[5]. Feld, J.: Discussion on friction pile foundations. Transactions of the American Society of Civil Engineers 108, pp 143-144 (1943)
[6]. Itoh, A. and Yamagata, K.: Vertical Loading Test of Model Group piles (Part 3: Influence of Pile Spacing). Proceedings of Annual conference AIJ, Structure. pp. 661-662. (1988)
[7]. P. Kytiyodom et al., Influence of reaction piles on the behaviour of a test pile in stactic load testing, Canadian Geotechnical Journal, 41 (2004) 408-420. https://doi.org/10.1139/t03-098
[8]. M. Randolph, P. Clancy, Efficient design of piled rafts, Proc. of Deep Foundation on Bored and Auger Piles, Ghent, Belgium, 1993, pp. 119-130.
[9]. J. D. Patil et al., An experiment study on behavior of piled raft foundation, Indian Geotechnical Journal, 46 (2016) 16-24. https://doi.org/10.1007/s40098-015-0145-7
[10]. A. B. Vesic, Bearing Capacity of Deep Foundations in Sand. Committee on Stress Distribution in Earth Masses, 1963, pp. 112-153.
[11]. T. Whitaker, Experiments with Model Piles in Groups, Geotechnique, 7 (1957) 147-167. https://doi.org/10.1680/geot.1957.7.4.147
[12]. Y. Zhang et al., Load test on Full- scale bored pile groups, Proceeding of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, 2013, pp. 2909-2912. https://www.cfms-sols.org/sites/default/files/Actes/2909-2912.pdf
Tải xuống
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Nhận bài
05/10/2020
Nhận bài sửa
30/10/2020
Chấp nhận đăng
06/11/2020
Xuất bản
25/01/2021
Chuyên mục
Công trình khoa học
Kiểu trích dẫn
Bach Vu Hoang, L. (7600). Static loading tests on small-scale pile groups. Tạp Chí Khoa Học Giao Thông Vận Tải, 72(1), 84-94. https://doi.org/10.47869/tcsj.72.1.10
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