路基工程Issue(5)：128-133,6.DOI:10.13379/j.issn.1003-8825.202404005
粉煤灰-石灰改良压实黄土强度特性试验研究
Experimental Investigation on Strength Characteristics of the Compacted Loess Improved by Fly Ash-Lime
贺琪 1李满仓 1黄登科 1程志鹏 1孙亚军 1刘科继2
作者信息
- 1. 中铁一局集团有限公司第三工程分公司,陕西宝鸡 721006
- 2. 西安工业大学建筑工程学院,西安 710021
- 折叠
摘要
Abstract
The TSZ-3 strain controlled triaxial shear apparatus was applied to test the fly ash-lime improved loess with different water content and different compaction of Xi'an Metro Line 5 under different consolidation confining pressure conditions.The result shows that,the smaller the water content,the greater the confining pressure,the greater the strength of the improved loess;the greater the compaction,the higher the stress-strain curve,and the more apparent the effect of compaction on soil strength.With the intensification of compaction,the cohesion and internal friction angle increase linearly.With the increase of water content,the cohesion decreases nonlinearly by about 100 kPa,and the internal friction angle decreases within 5°.The stress-strain curve of fly ash-lime improved loess is dominated by softening type,showing brittle failure.The compaction and water content have great influence on the cohesion of the improved loess,but have little effect on the internal friction angle.关键词
粉煤灰-石灰/改良黄土/压实度/应力-应变关系/强度特性Key words
fly ash-lime/improved loess/compactness/stress-strain relation/strength characteristics分类
建筑与水利引用本文复制引用
贺琪,李满仓,黄登科,程志鹏,孙亚军,刘科继..粉煤灰-石灰改良压实黄土强度特性试验研究[J].路基工程,2025,(5):128-133,6.
