Settlement prediction of stage constructed embankment on soft ground based on the hyperbolic method

YANG Tao; LI Guo-wei; YANG Wei-qing

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Settlement prediction of stage constructed embankment on soft ground based on the hyperbolic method

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- Settlement prediction of stage constructed embankment on soft ground based on the hyperbolic method
- Vol. 25, Issue 10期　刊出日, (2004)
- 作者机构：
  
  1. 上海理工大学城市建设与环境工程学院,上海,200093
  2. 河海大学岩土工程研究所,江苏,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： U416
- Online First：25 July 2014，
  
  Published：2004
- 稿件说明：
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YANG Tao, LI Guo-wei, YANG Wei-qing. Settlement prediction of stage constructed embankment on soft ground based on the hyperbolic method[J]. 2004, 25(10期　刊出日).
DOI：

YANG Tao, LI Guo-wei, YANG Wei-qing. Settlement prediction of stage constructed embankment on soft ground based on the hyperbolic method[J]. 2004, 25(10期　刊出日). DOI：

摘要

在软土地基上修筑路堤多采用分级施工的方法。基于传统双曲线沉降预测法基础上，提出一种软土地基上路堤分级施工情况下沉降预测的新模型，该模型考虑了土体变形的非线性特性和固结性质随荷载的变化，将沉降拟合方程中的待定参数在2个不同荷载级中分别确定。利用有较长预压期的前一级实测沉降，确定与土的固结性质有关的参数，待预测沉降荷载级的最终沉降量由该级较短预压期内实测沉降确定。通过工程实例验证了所建议模型的适用性。

Abstract

Stage construction is a typical procedure for expressway embankments on soft ground. Based on the traditional hyperbolic method

a new model for prediction of settlement of stage constructed embankment on soft ground is presented. In the proposed model

soil deforms nonlinearly

and its consolidation properties vary with the magnitude of the load. The parameter a related to consolidation properties of soft soil is determined by the settlements measured at the forestage with longer preloading duration; the other parameter

the final settlement Sf

is determined by the settlements measured in shorter preloading duration at which stage settlements are to be predicted. A case study shows predicted settlements are fairly consistent with measured settlements. The proposed model is accurate and easy to operate

and can predict settlements in practical engineering in time.

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