摘要
针对客运专线基床表层级配碎石的特点,采用大型三轴试验,在低围压下研究了压实度、含水状态和排水(气)对其抗剪强度的影响,进行了条件相当的大型直剪试验,并对两种试验方法及相应抗剪强度指标的适用性进行了讨论,试验成果对工程设计和研究有一定的参考价值。
According to the characteristics of graded gravel on the bedding surface of passenger dedicated line,the influence of compactness,water content and drainage（exhaust） is studied on the shear strength of gradedgravel under low confining pressure based on large-scale tri-axial test.Equivalent large-scale direct shear test is also carried out.This paper discusses the applicability of theses two test methods and their corresponding shear strength indicator.The result has a certain reference value for engineering design and research.
出处
《路基工程》
2010年第4期75-78,共4页
Subgrade Engineering
基金
中铁第四勘察设计院集团有限公司科技开发计划项目(2006K029)
关键词
客运专线
级配碎石
抗剪强度
大型三轴和直剪试验
passenger dedicated line
graded gravel
shear strength
large-scale tri-axial and direct shear test
