Valuing m of Laterally Loaded Piles on Gravelly Soil Slope

XU Xian-tao; YANG Xun; XU Jiu-yan; CHEN Ji-bin; ZHAO Qi-hua

doi:10.11988/ckyyb.202106702022

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Journal of Changjiang River Scientific Research Institute ›› 2022, Vol. 39 ›› Issue (11) : 119-125. DOI: 10.11988/ckyyb.202106702022

ROCKSOIL ENGINEERING

Valuing m of Laterally Loaded Piles on Gravelly Soil Slope

XU Xian-tao¹, YANG Xun¹, XU Jiu-yan¹, CHEN Ji-bin^2,3, ZHAO Qi-hua³

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Abstract

A plenty of electric transmission lines in the southwest of China cross mountain areas,with their pile foundations located in gravelly soil slope terrain grounds. The m value of horizontal-loaded piles in such foundations is still a challenge in civil engineering. Model tests of horizontal-loaded piles on slopes of four different gradients were conducted to examine the variation of pile displacement with horizontal load and the change of horizontal resistance of pile-side soil along depth direction. The corresponding relationship between the m-value and soil surface displacement can be descried into power function,and the main parameters in the function are in relation to the rate of subgrade reaction of soil in sloping area and level ground. To verify the validity of the proposed equation,an in-situ lateral loading test was performed. The research finding effectively improves the accuracy of calculating horizontal resistance of laterally loaded pile on gravelly soil slope.

Key words

gravelly soil / terrain slope / piles under lateral load / value of m / power function

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XU Xian-tao, YANG Xun, XU Jiu-yan, CHEN Ji-bin, ZHAO Qi-hua. Valuing m of Laterally Loaded Piles on Gravelly Soil Slope[J]. Journal of Changjiang River Scientific Research Institute. 2022, 39(11): 119-125 https://doi.org/10.11988/ckyyb.202106702022

References

[1] JGJ 94—2008,建筑桩基技术规范[S].北京:中国建筑工业出版社,2008.
[2] 龚晓南.桩基工程手册[M].2版.北京:中国建筑工业出版社,2016.
[3] 工程地质手册编委会.工程地质手册[M].4版.北京:中国建筑工业出版社,2018.
[4] 姜远达.砂土中桩基础水平承载特性数值模拟及方案优化[D].兰州:兰州大学,2019.
[5] 赵春风,王卫中,赵程,等.砂土中竖向和弯矩荷载下单桩水平承载特性试验研究[J].岩石力学与工程学报,2013,32(1):184-190.
[6] 劳伟康,周治国,周立运.水平推力桩在大位移情况下m值的确定[J].岩土力学,2008,29(1):192-196.
[7] 吴锋,时蓓玲,卓杨.水平受荷桩非线性m法研究[J].岩土工程学报,2009,31(9):1398-1401.
[8] 吴泽军,耿大新,方焘.变截面桩的水平荷载模型试验研究[J].铁道建筑,2011(8):103-105.
[9] 朱碧堂.土体的极限抗力与侧向受荷桩性状[D].上海:同济大学,2005.
[10] 陈继彬.碎石土斜坡土体水平抗力分布规律研究[D].成都:成都理工大学,2017.
[11] 陈继彬,赵其华,彭社琴.碎石土斜坡土体水平抗力分布规律研究[J].工程地质学报,2018,26(4):138-147.
[12] 赵明华.倾斜荷载下桩基的受力研究[D].长沙:湖南大学,2001.
[13] KONSTANTINOS G,GEORGIADIS M.Undrained Lateral Pile Response in Sloping Ground[J].Journal of Geotechnical and Geoenvironmental Engineering,2010,15:1488-1500.
[14] KONSTANTINOS G,GEORGIADIS M.Development of p-y Curves for Undrained Response of Piles Near Slopes[J].Computers and Geotechnics,2012,40:53-61.
[15] KONSTANTINOS G.The Effect of Surcharge Load on the Lateral Resistance of a Row of Piles in Clay[C]∥Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering.Delft,The Netherlands,Doi:10.13140/2.1.1695.0402.
[16] 丁梓涵,赵其华,彭社琴.基于修正计算宽度的斜坡场地m值取值方法研究[J].地下空间与工程学报,2019,15(6):271-278.
[17] 丁选明,巫崇荣,瞿立明,等.斜坡地形单桩竖向承载特性模型试验与数值模拟研究[J].土木与环境工程学报(中英文),2020,42(3):1-9.
[18] 喻豪俊,彭社琴,赵其华,等.斜坡碎石土地基水平抗力系数研究[J].岩土力学,2017,38(6):1682-1687,1704.
[19] GB/T 50123—1999,土工试验方法[S].北京:中国计划出版社,1999.
[20] American Petroleum Institute.Recommended Practice for Planning,Designing and Constructing Fixed Offshore Platforms-Working Stress Design[M].Washington,D.C.:API Publishing Services,2001.