Model tests on uplift and lateral bearing characteristics of inclined helical 
pile group embedded in sand

LIU Zhi-peng; KONG Gang-qiang; WEN Lei; WANG Zhi-hua; QIN Hong-yu

doi:10.16285/j.rsm.2020.1243

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Model tests on uplift and lateral bearing characteristics of inclined helical pile group embedded in sand

更新时间：2026-06-25

- Model tests on uplift and lateral bearing characteristics of inclined helical pile group embedded in sand
- Vol. 42, Issue 7, Pages: 1944-1950(2021)
- 作者机构：
  
  1. 河海大学岩土力学与堤坝工程教育部重点实验室,江苏,南京,210098
  2. 南京工业大学交通运输工程学院,江苏,南京,211816
  3. 佛林德斯大学理工学院,阿德莱德,澳大利亚
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2020.1243
  CLC： TU473.1
- Online First：19 July 2021，
  
  Published：2021
- 稿件说明：
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LIU Zhi-peng, KONG Gang-qiang, WEN Lei, et al. Model tests on uplift and lateral bearing characteristics of inclined helical pile group embedded in sand[J]. 2021, 42(7): 1944-1950.
DOI：

LIU Zhi-peng, KONG Gang-qiang, WEN Lei, et al. Model tests on uplift and lateral bearing characteristics of inclined helical pile group embedded in sand[J]. 2021, 42(7): 1944-1950. DOI： 10.16285/j.rsm.2020.1243.

摘要

螺旋桩广泛应用于太阳能光伏板支架及输电塔基础等工程中；然而，目前针对其竖向与水平向承载特性的研究仍相对不足，尤其是倾斜螺旋桩群桩的承载性能与受力机制尚不明确。开展砂土地基中螺旋桩竖直群桩和倾斜群桩（桩体与竖向线成15°）的对比模型试验，测试竖向上拔或水平向荷载作用下螺旋桩群桩的桩顶荷载?位移关系、桩侧土压力分布等变化规律；通过与竖直群桩试验结果的对比分析，探讨了竖向上拔或水平向荷载作用下倾斜群桩的极限承载力、叶片荷载分担比及群桩效应等特性。研究结果表明，试验条件下，砂土地基中15°倾斜螺旋桩群桩的竖向抗拔与水平极限承载力均略高于竖直群桩；竖向上拔荷载作用下，15°倾斜群桩叶片荷载分配比峰值低于竖直群桩；水平向荷载作用下，15°倾斜群桩前排桩和后排桩的最大桩侧土压力均大于竖直群桩相同位置处的土压力值。

Abstract

Helical pile is widely applied in engineering

such as solar photovoltaic panel

transmission tower

etc. However

the research focused on the vertical or horizontal bearing capacities of helical piles is relatively limited. Especially

the bearing capacity and the bearing mechanism of inclined pile group are still unclear. The comparative model tests of vertical and inclined helical pile groups embedded in sand are carried out. The pile top load-displacement curves and the distribution of soil pressure on the plate of the helical pile group (vertical pile group and 15° inclined pile group) under vertical uplift or lateral load are measured. The ultimate bearing capacity

the load distribution ratio of the plate

and the group effect of inclined helical pile group under vertical uplift or lateral load are comparatively discussed. The results show that the ultimate uplift or lateral bearing capacity of the inclined helical pile group are larger than those of the vertical pile group in the model test conditions

respectively; the peak value of the plate load distribution ratio of the inclined pile group (15°) under the vertical uplift load is smaller than that of the vertical pile group; the maximum lateral earth pressure in the front and behind row of the inclined pile group is both larger than that at the same position of vertical one.

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