[1]李彦龙,苏立君,王铁行,等.考虑密度和含水率影响的非饱和黄土吸力强度的试验研究[J].西安建筑科技大学学报:自然科学版,2013,45(05):663-667.[doi:10.15986/j.1006-7930.2013.05.010]
　LI Yan-long,SU Li-jun,WANG Tie-hang,et al.Relation of suction strength with water content and dry density of unsaturated loess[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,45(05):663-667.[doi:10.15986/j.1006-7930.2013.05.010]
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考虑密度和含水率影响的非饱和黄土吸力强度的试验研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
45
期数:
2013年05期
页码:
663-667
栏目:
出版日期:
2013-10-31

文章信息/Info

Title:
Relation of suction strength with water content and dry density of unsaturated loess
文章编号:
1006-7930(2013)05-0663-05
作者:
李彦龙; 苏立君; 王铁行; 王娟娟
(西安建筑科技大学土木工程学院,陕西 西安 710055)
Author(s):
LI Yan-long;  SU Li-jun;  WANG Tie-hang;  WANG Juan-juan
(School of Civil Engineering, Xian University of Architecture & Technology, Xian 710055,China)
关键词:
非饱和黄土; 吸力强度; 含水率; 干密度; 三轴试验
Keywords:
unsaturated loess;  suction strength;  water content;  dry density;  triaxial test
分类号:
TU 441
DOI:
10.15986/j.1006-7930.2013.05.010
文献标志码:
A
摘要:
吸力对土体抗剪强度的贡献部分称为吸力强度,是非饱和土体抗剪强度的核心变量.土在饱和及非饱和状态下,其有效抗剪强度指标是相同的,基于这一研究结论,可通过常规三轴试验来研究非饱和土的吸力强度.三轴试验结果表明,吸力强度与含水率为准线性关系,二者为负相关;吸力强度与干密度为准线性关系,二者为正相关.在含水率、干密度和吸力强度空间中,吸力强度的分布为一平面.建立了综合考虑含水率和干密度的吸力强度表达式和非饱和黄土抗剪强度表达式,可供工程实践参考.
Abstract:
Suction strength is defined as the contribution of suction to shear strength, which is also the core variable of unsaturated soil. The effective shear strength index of soil remains unchanged in both circumstances of saturated and unsaturated laess. Based on this conclusion, suction strength of unsaturated soil can be studied by conventional triaxial test. Triaxial test results show that the relation of suction strength and moisture content is of the linear type in, negative correlation. The relation of suction strength and dry density is linear that is positively correlated. A function about suction strength is established which includes dry density and moisture content. Distribution of suction strength acts like a plane in water content, dry density and suction strength space. Formulas about shear strength and suction strength of unsaturated loss including the impact of water content and dry density are also established, to serve as reference for engineering

参考文献/References:

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[1]刘小军,闫玉闯,罗扬,等.非饱和黄土水分迁移规律及迁移量的试验研究[J].西安建筑科技大学学报:自然科学版,2015,47(01):56.[doi:10.15986/j.1006-7930.2015.01.011]
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备注/Memo

备注/Memo:
收稿日期:2013-03-27 修改稿日期:2013-09-05
基金项目:国家自然科学基金资助项目(51278397;51078309)
作者简介:李彦龙(1985-),男,河南南阳人,博士生,主要研究方向为非饱和土力学.
更新日期/Last Update: 2015-10-05