Scholarlink

<p>Three-dimensional finite element analyses were performed on large piled-raft (PR) foundations with flexible rafts embedded in sandy soil to assess the effects of pile spacing, pile length, and pile number on average and differential settlements, as well as on settlement-based PR interaction factors. For a given design load, optimized PR configurations were identified based on settlement performance and bearing capacity requirements. The results indicated that all PR interaction factors were shown to be functions of both PR configuration and settlement magnitude. The pile-to-pile interaction factor increased with both increases in pile spacing and average settlement, remained below unity for all cases and ranged from 0.45 to 0.96. With increased pile spacing, pile-to-raft interaction factor decreased, and for all pile spacings, it increased with settlement and ranged from 0.75 to 1.28 for wider pile spacing. At higher settlements levels, the pile-to-raft interaction factor decreased with increasing pile length at wider pile spacings. The raft-to-pile interaction factor decreased with increasing pile number, increased with settlement, stabilized at higher settlements ranging from 0.83 to 1.22. For all settlement levels considered, the mobilized factor of safety of PR foundations decreased with increasing pile spacing and pile number, while pile length had a negligible influence.</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

A Parametric Study to Evaluate Settlement-Based Interaction Factors of Large Piled-Raft Foundation with Flexible Raft in Sandy Soil

  • 期刊论文

  • 发表日期：

    2026年1月8日

查看全文
  • Banchiva K. Marak,
  • Baleshwar Singh

摘要

Three-dimensional finite element analyses were performed on large piled-raft (PR) foundations with flexible rafts embedded in sandy soil to assess the effects of pile spacing, pile length, and pile number on average and differential settlements, as well as on settlement-based PR interaction factors. For a given design load, optimized PR configurations were identified based on settlement performance and bearing capacity requirements. The results indicated that all PR interaction factors were shown to be functions of both PR configuration and settlement magnitude. The pile-to-pile interaction factor increased with both increases in pile spacing and average settlement, remained below unity for all cases and ranged from 0.45 to 0.96. With increased pile spacing, pile-to-raft interaction factor decreased, and for all pile spacings, it increased with settlement and ranged from 0.75 to 1.28 for wider pile spacing. At higher settlements levels, the pile-to-raft interaction factor decreased with increasing pile length at wider pile spacings. The raft-to-pile interaction factor decreased with increasing pile number, increased with settlement, stabilized at higher settlements ranging from 0.83 to 1.22. For all settlement levels considered, the mobilized factor of safety of PR foundations decreased with increasing pile spacing and pile number, while pile length had a negligible influence.