刘增利   

Senior Engineer
Supervisor of Master's Candidates

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Paper Publications

Title of Paper:原位冻结黏土单轴压缩试验研究

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Date of Publication:2007-12-15

Journal:岩土力学

Included Journals:EI、PKU、ISTIC、CSCD、Scopus

Volume:28

Issue:12

Page Number:2657-2660

ISSN No.:1000-7598

Key Words:原位冻结黏土;单轴压缩;破坏特征

Abstract:采用沈阳原位冻结黏土制备了冻土单轴压缩试样,进行了冻结黏土的单轴压缩试验,获得了冻结黏土单轴压缩载荷-位移关系曲线,并对原位冻结黏土的破坏特征进行了研究.试验表明,原位冻结黏土在给定温度(-15℃)和加载速率范围(2.5×10-2~1.0×10-5 mm/s)下,开始均具有一定的线弹性压缩过程,随后产生微裂纹,而冻土也进入塑性硬化阶段,随着裂纹的扩展与贯通,最终达到剪切破坏.原位冻土的破坏形型表明,由于其固有的结构性,使之与重塑土的单轴压缩破坏特征具有明显的不同.

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