Theoretical solution for time effect of shaft bearing capacity of single pile in soft soils

CAO Quan; SHI Jian-yong; LEI Guo-hui; AI Ying-bo; CHEN Hong

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Theoretical solution for time effect of shaft bearing capacity of single pile in soft soils

更新时间：2026-06-25

- Theoretical solution for time effect of shaft bearing capacity of single pile in soft soils
- Vol. 32, Issue 12, (2011)
- 作者机构：
  
  1. 河海大学岩土工程研究所,南京,210098
  2. 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098
  3. 深圳市市政设计研究院有限公司,广东,深圳,518029
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU470
- Online First：13 December 2011，
  
  Published：2011
- 稿件说明：
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CAO Quan, SHI Jian-yong, LEI Guo-hui, et al. Theoretical solution for time effect of shaft bearing capacity of single pile in soft soils[J]. 2011, 32(12).
DOI：

CAO Quan, SHI Jian-yong, LEI Guo-hui, et al. Theoretical solution for time effect of shaft bearing capacity of single pile in soft soils[J]. 2011, 32(12). DOI：

摘要

以有效应力原理为基础，结合考虑应变软化、桩径和弹性区孔压分布等因素的桩周土固结解，推导出软土中单桩桩侧承载力时效性的理论解。与传统桩的承载力时效性简化分析方法不同，该理论解不仅考虑了多土层地基中各土层刚度指数的差异对固结过程的影响，还考虑了各土层因固结系数不同对孔压消散速率的影响。通过现场不同间歇期的单桩载荷试验测试结果验证了其合理性

Abstract

Based on the theory of effective stress

consolidation solution around the pile which is taken into account the influence of strain softening

magnitude of pile radius and range of excess pore water pressure

a theoretical relationship about time-effect of bearing capacity of single pile is developed

which can be used to predict the variation of shaft bearing capacity of a jacked-in pile with time in saturated soft clay. Different from the traditional way

the effect of different stiffness indices and different consolidation coefficients on the consolidation process in varied clays and highly stratified deposits are considered in the new consolidation solution. Besides

the rationality of the solution is verified by the pile load tests in different time periods after installation.

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