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<p>This study numerically investigated the performance enhancement of ordinary granular piles (OGPs) in soft soil using a geosynthetic-reinforced granular pad (RGPD). The research quantified the effects of the reinforcement’s position, the number of layers, its length, and the OGP diameter on the load-settlement response. A comprehensive parametric study was validated against experimental results. The analyzed variables included granular pad thickness, geosynthetic layer position at mid-height or bottom, single and double layers, reinforcement length from 2D to 8D, and OGP diameters of 80&#xa0;mm and 100&#xa0;mm. The results demonstrated that the reinforced pad significantly improved load transfer mechanisms, which reduced stress concentration and minimized lateral bulging in the upper OGP zone. The optimal configuration involved a double-layer geosynthetic with a length of 8D; this design yielded a 40.21% increase in bearing capacity compared to an unreinforced OGP. Furthermore, the Improvement Factor reached 2.96 for a 100&#xa0;mm diameter OGP, representing a nearly threefold increase over the untreated soft clay. This study conclusively established that geosynthetic-reinforced granular pads are a highly efficient and cost-effective solution for amplifying the strength and settlement performance of granular pile foundations in soft soils.</p>

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Numerical Investigation of Geosynthetic-Reinforced Granular Pads for Enhancing the Performance of Ordinary Granular Piles in Soft Soil

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • Ajay Pratap Singh Rathor,
  • Himanshu Gupta,
  • Jitendra Kumar Sharma,
  • Madhav Madhira

摘要

This study numerically investigated the performance enhancement of ordinary granular piles (OGPs) in soft soil using a geosynthetic-reinforced granular pad (RGPD). The research quantified the effects of the reinforcement’s position, the number of layers, its length, and the OGP diameter on the load-settlement response. A comprehensive parametric study was validated against experimental results. The analyzed variables included granular pad thickness, geosynthetic layer position at mid-height or bottom, single and double layers, reinforcement length from 2D to 8D, and OGP diameters of 80 mm and 100 mm. The results demonstrated that the reinforced pad significantly improved load transfer mechanisms, which reduced stress concentration and minimized lateral bulging in the upper OGP zone. The optimal configuration involved a double-layer geosynthetic with a length of 8D; this design yielded a 40.21% increase in bearing capacity compared to an unreinforced OGP. Furthermore, the Improvement Factor reached 2.96 for a 100 mm diameter OGP, representing a nearly threefold increase over the untreated soft clay. This study conclusively established that geosynthetic-reinforced granular pads are a highly efficient and cost-effective solution for amplifying the strength and settlement performance of granular pile foundations in soft soils.