Scholarlink

<p>Tower foundations play an important role in transmission line engineering, and the anti-draft design is crucial to ensure foundation stability. However, the traditional foundation structure has a lower bearing capacity or is more destructive to the ecological environment. Therefore, this paper proposes a new type of foundation structure, vertical-inclined combined stiffness core high-pressure jet grouting piles (VICSGP). The research results show that. (1) The ultimate bearing capacity of VICSGP is 2000&#xa0;kN, about 1.143 times the sum of the ultimate bearing capacity of 5 vertical single piles. (2) The axial force of the pile is maximum at the top of the pile. The axial forces of vertical piles in single and vertical-inclined combined piles decay approximately linearly. And the nonlinear attenuation of the axial force of inclined piles. (3) Bending moments also occur in vertical piles due to eccentric loads, and the bending moment in inclined piles is most significant at the top of the pile or in the middle of the pile. Inclined piles can also backbend when loads are high. (4) The side resistance of the single pile is maximum in the upper part of the pile for smaller loads and in the lower part for larger loads. The side resistance of a pile in the VICSGP is highest in the middle or at the bottom. (5) A formula for calculating the uplift bearing capacity of VICSGP foundations is proposed and validated against field test results. The calculated capacity (1967 kN) agrees well with the measured value (2000 kN), exhibiting a difference of only 1.65%, which is within the permissible error. The proposed VICSGP foundation achieves an ultimate uplift capacity 14.3% higher than that of conventional vertical pile foundations, highlighting its potential for application in transmission tower foundations on similar clay soils.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Field test on the uplift capacity of vertical-inclined combined stiffness core high-pressure jet grouting piles

  • 期刊论文

  • 发表日期：

    2026年5月16日

查看全文
  • Fei Gan,
  • Meilin Li,
  • Qiang Lou,
  • Gang Zheng,
  • Shilang Guo,
  • Yuanyin Zhang,
  • Biao Liu,
  • Haizuo Zhou,
  • Hong Wang,
  • Jun Yang,
  • Hongwei Liu

摘要

Tower foundations play an important role in transmission line engineering, and the anti-draft design is crucial to ensure foundation stability. However, the traditional foundation structure has a lower bearing capacity or is more destructive to the ecological environment. Therefore, this paper proposes a new type of foundation structure, vertical-inclined combined stiffness core high-pressure jet grouting piles (VICSGP). The research results show that. (1) The ultimate bearing capacity of VICSGP is 2000 kN, about 1.143 times the sum of the ultimate bearing capacity of 5 vertical single piles. (2) The axial force of the pile is maximum at the top of the pile. The axial forces of vertical piles in single and vertical-inclined combined piles decay approximately linearly. And the nonlinear attenuation of the axial force of inclined piles. (3) Bending moments also occur in vertical piles due to eccentric loads, and the bending moment in inclined piles is most significant at the top of the pile or in the middle of the pile. Inclined piles can also backbend when loads are high. (4) The side resistance of the single pile is maximum in the upper part of the pile for smaller loads and in the lower part for larger loads. The side resistance of a pile in the VICSGP is highest in the middle or at the bottom. (5) A formula for calculating the uplift bearing capacity of VICSGP foundations is proposed and validated against field test results. The calculated capacity (1967 kN) agrees well with the measured value (2000 kN), exhibiting a difference of only 1.65%, which is within the permissible error. The proposed VICSGP foundation achieves an ultimate uplift capacity 14.3% higher than that of conventional vertical pile foundations, highlighting its potential for application in transmission tower foundations on similar clay soils.