Numerical Study on One-dimensional Frost Heave Amount of Composite Backfill

祁生旺; 邓安

doi:10.13409/j.cnki.jdpme.2012.05.016

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Numerical Study on One-dimensional Frost Heave Amount of Composite Backfill

更新时间：2025-12-11

- Numerical Study on One-dimensional Frost Heave Amount of Composite Backfill
- Vol. 32, Issue 5, Pages: 600-605(2012)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2012.05.016
  CLC： 414
- Published：2012
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[1]祁生旺,邓安.复合填料一维冻胀量数值模拟分析[J].防灾减灾工程学报,2012,32(05):600-605.

祁生旺, 邓安. Numerical Study on One-dimensional Frost Heave Amount of Composite Backfill[J]. 2012, 32(5): 600-605.
[1]祁生旺,邓安.复合填料一维冻胀量数值模拟分析[J].防灾减灾工程学报,2012,32(05):600-605. DOI： 10.13409/j.cnki.jdpme.2012.05.016.

祁生旺, 邓安. Numerical Study on One-dimensional Frost Heave Amount of Composite Backfill[J]. 2012, 32(5): 600-605. DOI： 10.13409/j.cnki.jdpme.2012.05.016.

摘要

复合填料是以废铸砂、粉煤灰、聚苯乙烯颗粒（EPS）、水泥和水为原料

拌合后形成的一种轻质填筑材料。其中

EPS颗粒含量适当时

能减少或消除复合填料的冻胀和融沉

可作为季节性冻土区的路基填料。假设复合填料中除EPS颗粒外的骨料颗粒、孔隙冰为刚性介质

同时考虑EPS颗粒变形和填料孔隙变形对复合填料冻结过程的影响

在已有的冻土水热耦合分离冰模型的基础上

得到考虑EPS颗粒变形影响的饱和填料一维冻结水热耦合控制方程

进而预测填料的冻胀量。与室内模型试验结果对比表明

本文模型可用于该种具有弹性颗粒复合填料的冻胀量模拟

为工程中冻胀量预测提供依据。

Abstract

A composite backfill is a kind of light backfill formed by mixing waste foundry sand

flyash

expanded polystyrene（EPS） beads

cement and water in designated proportions.Inclusion of EPS beads can reduce or eliminate frost heave and thaw settlement

and thus can be used as backfill of road base in seasonal frost areas.A one-dimensional frost heave model was established based on the current moisture-heat coupling model.The model is able to take account of the elastoplastic behavior of EPS bead and its effect on frost heave taken place within the mass of composite backfill.The results given by the model are in a good agreement with the test results achieved from a previous companion study

which validates the use of this model in the prediction of frost heave of engineering works in seasonal frost areas.

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references

饱和土水热耦合分离冰冻胀模型研究 [J]. 周扬,周国庆,王义江. 岩土工程学报 . 2010(11)

饱和土冻结透镜体生长过程水热耦合分析 [J]. 周扬,周国庆,周金生,王建州. 岩土工程学报 . 2010(04)

冻土水热耦合分离冰冻胀模型的发展 [D]. 胡坤. 中国矿业大学 2011

饱和颗粒土冻结过程中的多场耦合研究 [D]. 曹宏章. 中国科学院研究生院（工程热物理研究所） 2006

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