Scholarlink

<p>Construction on soft soils often faces critical challenges due to inherent properties such as low shear strength, high compressibility, and significant long-term settlement. Floating stone columns is an efficient ground enhancement method for soft soils, mitigating issues notably poor shear strength, high compressibility, and significant settlement. The present study investigates the efficacy of different floating stone column configurations subjected to static loading conditions by PLAXIS 3D FEM software. The configurations comprise ordinary granular column (OGC), horizontally reinforced stone columns (HRSC), hybrid reinforced columns (HRSC + VESC), vertical encased stone columns (VESC), dual-layer geosynthetic encased stone columns (DL-GESC), and annulus stone columns (ASC). The influence of the outer-to-inner diameter ratio (D<sub>o</sub>/D<sub>i</sub>) was thoroughly investigated for DL-GESC and ASC. The results indicate that DL-GESC attained the maximum axial stress, surpassing 731 kN/m<sup>2</sup>, encompassing an enhancement of approximately 474% over unreinforced clay. Axial stress increased by up to 404% as the Do/Di ratio increased in ASC, indicating a substantial dependence. The inclusion of geosynthetic encasement, exhibiting an axial rigidity of 150 kN/m, substantially increased lateral stability, stress distribution, and settlement mitigation. Although OGC and HRSC exhibited moderate enhancements, HRSC + VESC and VESC showed exceptional settlement control and stress redistribution. Present study highlights the need of geometric optimization and reinforcement methods to enhance the performance of floating stone columns, providing essential insights for their design and execution.</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

Performance of Stone Column Configurations in Floating Conditions Under Vertical Loading

  • 期刊论文

  • 发表日期：

    2025年9月4日

查看全文
  • Neeraj Kumar,
  • Rakesh Kumar,
  • Abhijeet Shukla

摘要

Construction on soft soils often faces critical challenges due to inherent properties such as low shear strength, high compressibility, and significant long-term settlement. Floating stone columns is an efficient ground enhancement method for soft soils, mitigating issues notably poor shear strength, high compressibility, and significant settlement. The present study investigates the efficacy of different floating stone column configurations subjected to static loading conditions by PLAXIS 3D FEM software. The configurations comprise ordinary granular column (OGC), horizontally reinforced stone columns (HRSC), hybrid reinforced columns (HRSC + VESC), vertical encased stone columns (VESC), dual-layer geosynthetic encased stone columns (DL-GESC), and annulus stone columns (ASC). The influence of the outer-to-inner diameter ratio (Do/Di) was thoroughly investigated for DL-GESC and ASC. The results indicate that DL-GESC attained the maximum axial stress, surpassing 731 kN/m2, encompassing an enhancement of approximately 474% over unreinforced clay. Axial stress increased by up to 404% as the Do/Di ratio increased in ASC, indicating a substantial dependence. The inclusion of geosynthetic encasement, exhibiting an axial rigidity of 150 kN/m, substantially increased lateral stability, stress distribution, and settlement mitigation. Although OGC and HRSC exhibited moderate enhancements, HRSC + VESC and VESC showed exceptional settlement control and stress redistribution. Present study highlights the need of geometric optimization and reinforcement methods to enhance the performance of floating stone columns, providing essential insights for their design and execution.