Identification and determination of micro-crack size for frozen soil

LI Hong-sheng; WANG Yue-dong; LIU Zeng-li

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Identification and determination of micro-crack size for frozen soil

更新时间：2026-06-25

- Identification and determination of micro-crack size for frozen soil
- Vol. 25, Issue 4期　刊出日, (2004)
- 作者机构：
  
  大连理工大学工程力学系,辽宁,大连,116024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411.92
- Online First：17 July 2014，
  
  Published：2004
- 稿件说明：
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LI Hong-sheng, WANG Yue-dong, LIU Zeng-li. Identification and determination of micro-crack size for frozen soil[J]. 2004, 25(4期　刊出日).
DOI：

LI Hong-sheng, WANG Yue-dong, LIU Zeng-li. Identification and determination of micro-crack size for frozen soil[J]. 2004, 25(4期　刊出日). DOI：

摘要

在对冻土微观结构试验观测的基础上，提出了对冻土中微裂纹尺寸进行识别和确认的方法，给出了3种典型土质在不同温度下的微裂纹尺寸参考值，为应用冻土强度破坏准则进行定量计算与分析提供依据。将冻土微裂纹损伤区作为冻土体的缺陷处理，并按“当量化裂纹”原则，把冻土微裂纹损伤区简化为“当量裂纹”，如此给出了理论估算微裂纹尺寸的新途径。把理论计算与试验观测结果进行比较，二者符合较好。

Abstract

Based on investigation of microstructure characteristics for frozen soil

a new method is put forward to identify and determine micro-crack size in frozen soil. Considering micro-crack damage area as defects and simplified it as equivalent crack according to equivalent crack critical. Thus

the foundation of quantitative calculation and analysis for strength failure for frozen soil is set up. Reference values for three kinds of soils under different temperatures are given; and comparison between calculation results and investigation data shows that they coincided well.

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Related Institution

College of Civil Engineering, Yancheng Institute of Technology

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Key Laboratory of Mechanics on Disaster and Environment in Western China of Ministry of Education, Lanzhou University

State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and 1Engineering Research Institute, Chinese Academy of Sciences

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