Scholarlink

<p>The behavior of rigid piles in sandy soils under one-way cyclic oblique tensile loading represents a critical design consideration for floating renewable devices. These piles, when moored with catenary or taut moorings, experience one-way cyclic tensile loads at inclinations ranging from 0° (horizontal) to 90° (vertical). However, the combined effects of cyclic loading and load inclination remain inadequately understood. This study presents findings from centrifuge tests conducted on rough rigid piles installed in dense sand samples. The results demonstrate that load inclinations significantly influence both cyclic response and ultimate capacity of the piles. Based on the observed cyclic response characteristics, the vertical cyclic load amplitude should not exceed 25% of the ultimate bearing capacity to maintain pile stability. A power expression (with exponent <i>m</i> values ranging from 0.055 to 0.065) is proposed for predicting cumulative pile displacement under unidirectional cyclic loading at inclinations from 0° to 60°. The cyclic response exhibits reduced sensitivity to horizontal cyclic load magnitude, with <i>m</i>-value increasing from 0.06 to 0.14 as load magnitude increases from 0.3 to 0.9. For piles maintaining stability under oblique cyclic loading, the average normalized secant stiffness exceeds 1 and increases with decreasing inclination, indicating enhanced pile stiffness under cyclic loading. For load inclinations below 30°, pile stiffness can be determined using logarithmic function.</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

Cyclic Response Characteristics of Rigid Piles in Dense Sand Under Oneway Oblique Tensile Loads

  • 期刊论文

  • 发表日期：

    2025年8月1日

查看全文
  • Ting Huang,
  • Guo-liang Dai,
  • Ying-hui Tian,
  • Ji-sheng Zhang,
  • Qing-yun Xu

摘要

The behavior of rigid piles in sandy soils under one-way cyclic oblique tensile loading represents a critical design consideration for floating renewable devices. These piles, when moored with catenary or taut moorings, experience one-way cyclic tensile loads at inclinations ranging from 0° (horizontal) to 90° (vertical). However, the combined effects of cyclic loading and load inclination remain inadequately understood. This study presents findings from centrifuge tests conducted on rough rigid piles installed in dense sand samples. The results demonstrate that load inclinations significantly influence both cyclic response and ultimate capacity of the piles. Based on the observed cyclic response characteristics, the vertical cyclic load amplitude should not exceed 25% of the ultimate bearing capacity to maintain pile stability. A power expression (with exponent m values ranging from 0.055 to 0.065) is proposed for predicting cumulative pile displacement under unidirectional cyclic loading at inclinations from 0° to 60°. The cyclic response exhibits reduced sensitivity to horizontal cyclic load magnitude, with m-value increasing from 0.06 to 0.14 as load magnitude increases from 0.3 to 0.9. For piles maintaining stability under oblique cyclic loading, the average normalized secant stiffness exceeds 1 and increases with decreasing inclination, indicating enhanced pile stiffness under cyclic loading. For load inclinations below 30°, pile stiffness can be determined using logarithmic function.