Expansive model and black analysis of expansive soils

SUN Ji-chao; WANG Guang-qian; DONG Xi-bin; HUANG Yue-fei; GAO Quan-chen

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Expansive model and black analysis of expansive soils

更新时间：2026-06-25

- Expansive model and black analysis of expansive soils
- Vol. 28, Issue 10, (2007)
- 作者机构：
  
  1. 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
  2. 中国矿业大学力学与建筑工程学院,北京,100083
  3. 东北林业大学工程技术学院,哈尔滨,150040
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：15 October 2013，
  
  Published：2007
- 稿件说明：
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SUN Ji-chao, WANG Guang-qian, DONG Xi-bin, et al. Expansive model and black analysis of expansive soils[J]. 2007, 28(10).
DOI：

SUN Ji-chao, WANG Guang-qian, DONG Xi-bin, et al. Expansive model and black analysis of expansive soils[J]. 2007, 28(10). DOI：

摘要

对膨胀土膨胀性这一难题，目前通用的做法是施加一个膨胀力，但是无法给出一个合理的解释，膨胀力的大小也是根据经验来施加的，本文提出了膨胀土的膨胀模型(ESEM)并根据土坡的位移采用反演方法来确定了膨胀土的膨胀力；采用公式推导的方式，指出给膨胀土施加膨胀力和施加膨胀变形是一致的；结合降雨分析，运用Drucker-Prager模型编制了有限元程序，选用2范数进行反演运算；计算过程显示，膨胀土膨胀参数与2范数是单值连续具有凹点的，采用牛顿迭代法迭代，计算得出膨胀土膨胀参数；最终的计算结果，确定了膨胀土边坡的膨胀参数以及膨胀力公式。

Abstract

The expansive character of expansive soil slope is a very difficult problem. Now the modus operandi is that a press is set on soils; but the reasonable explanation in theory is not given; and the amount of the press is obtained only according to experience. An expansive model of expansive soils(ESEM) is put forward; and the method that the pressure is confirmed with back analysis according to displacement is given. And it is pointed out that the two ways are identical that the press and distortion are set on the slope soils by formula deduction. The analysis of rainfall is taken into account; and the finite element program is given based on the Drucker-Prager model. The back analysis is set up with 2-norm. The expansive parameter is calculated by the Newton’s iteration. The connection between the 2-norm and the expansive parameter is a curve that is single-valued continuous with a single concave point. At last

the expansive parameter and the expansive press formula of the expansive soil slope are given.

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