Deformation analysis of composite foundation improved by cement-soil piles under cycle loading

BAI Shun-guo; HOU Yong-feng; ZHANG Hong-ru

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Deformation analysis of composite foundation improved by cement-soil piles under cycle loading

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- Deformation analysis of composite foundation improved by cement-soil piles under cycle loading
- Vol. 27, Issue 4, (2006)
- 作者机构：
  
  1. 北京交通大学土建学院,北京,100044
  2. 河北农业大学城建学院,河北,保定,071001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU47
- Online First：05 November 2013，
  
  Published：2006
- 稿件说明：
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BAI Shun-guo, HOU Yong-feng, ZHANG Hong-ru. Deformation analysis of composite foundation improved by cement-soil piles under cycle loading[J]. 2006, 27(4).
DOI：

BAI Shun-guo, HOU Yong-feng, ZHANG Hong-ru. Deformation analysis of composite foundation improved by cement-soil piles under cycle loading[J]. 2006, 27(4). DOI：

摘要

采用自行研制的油压式循环加载设备，对水泥土桩复合地基在循环荷载作用下的竖向变形进行了大比尺的模型试验。试验结果表明，在循环荷载作用下复合地基同样存在临界循环应力比，其值大于单纯饱和软基的临界循环应力比，而且受水泥掺入比的影响不显著。另外，在循环荷载作用下循环应力比和加荷周数对复合地基竖向变形有显著的影响。

Abstract

Large-scale model tests on vertical deformation of cement-soil pile composite foundation under cyclic loading are performed through a new load-applying system designed by ourselves. It is shown that the critical cyclic stress ratio of cement-soil pile composite foundation is bigger than that of saturated soft foundation and is not affected by cement mixing ratio basically. In addition

cyclic stress ratio and number of cyclics have remarkable effects on vertical deformation of cement-soil pile composite foundation.

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