干旱区生态环境知识资源中心(Arid): 高速铁路路基动态变形模量分析

Arid

	高速铁路路基动态变形模量分析
其他题名	Analysis of dynamic deformation modulus for high-speed railway subgrade
	黄大维 1; 杨有海 2; 赖国泉 3; 岳鹏飞 4
来源期刊	岩土力学
ISSN	1000-7598
出版年	2012
卷号	33 期号:5 页码:1402-1408
中文摘要	通过兰新铁路第二双线路基试验段戈壁填料现场填筑试验,分析了动态变形模量E_(vd)与路基填料以及与填土压实质量的关系。研究表明,E_(vd)与静态变形模量E_(v2)的相关性很好,E_(vd)与地基系数K_(30)的相关性较差。通过ADINA三维动态有限元数值分析并结合现场检测结果,对E_(vd)值的影响因素进行了分析。结果表明,E_(vd)理论上与动模量E_d完全线性相关,E_(vd)与E_d的相关性表达式与动摩擦角及动黏聚力有关;当填土动黏聚力较小时,E_(vd)值随动黏聚力及动摩擦角的增大而增大,当动黏聚力增大到一定值以后,E_(vd)值不再随动黏聚力及动摩擦角的增大而变化;E_(vd)值与土体在冲击荷载作用下的抗剪强度有关,在既定的E_d下,当抗剪强度较小时,E_(vd)值随抗剪强度的增大而增大;当抗剪强度达到一定值后,E_(vd)值不再随抗剪强度的增大而变化。
英文摘要	Through the on-site filling test in the subgrade test section of Lanzhou-Xinjiang Railway two-line in desert area,the relationship between dynamic deformation modulus E_(vd) and subgrade filler as well as the compaction quality of the filler is analyzed,which shows a lack of correlation between E_(vd) and K_(30)(ground coefficient),while E_(vd) is well correlated to E_(v2)(static modulus of deformation).After analyzing the influence factors of E_(vd) by combining the numerical calculation of ADINA(three-dimensional dynamic finite element software) with field test,the findings indicate the following conclusions.Complete linear correlation exists between E_(vd) and E_d(dynamic modulus) in theory,their correlation formula has something to do with dynamic angle of internal friction and dynamic cohesion.When the filler dynamic cohesion keeps low,E_(vd) increases with the dynamic cohesion and dynamic angle of internal friction;while E_(vd) will not change with them when the filler dynamic cohesion is large enough.Also,E_(vd) relates to the shearing strength of soil under the impact load.With E_d stays established,E_(vd) increases with the shearing strength which is relatively low,but when the shearing strength reaches a certain value,E_(vd) will no longer change.
中文关键词	高速铁路路基 ; 路基检测 ; 路基压实质量 ; 动态变形模量
英文关键词	high-speed railway subgrade inspection for subgrade compaction quality of subgrade dynamic deformation modulus
语种	中文
国家	中国
收录类别	CSCD
WOS类目	CONSTRUCTION BUILDING TECHNOLOGY
WOS研究方向	Construction & Building Technology
CSCD记录号	CSCD:4522272
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228792
作者单位	1.同济大学, 道路与交通工程教育部重点实验室, 上海 201804, 中国; 2.兰州交通大学土木工程学院, 兰州, 甘肃 730070, 中国; 3.中铁西北科学研究院有限公司, 兰州, 甘肃 730000, 中国; 4.铁道第三勘察设计院集团有限公司, 天津 300251, 中国
推荐引用方式 GB/T 7714	黄大维,杨有海,赖国泉,等. 高速铁路路基动态变形模量分析[J],2012,33(5):1402-1408.
APA	黄大维,杨有海,赖国泉,&岳鹏飞.(2012).高速铁路路基动态变形模量分析.岩土力学,33(5),1402-1408.
MLA	黄大维,et al."高速铁路路基动态变形模量分析".岩土力学 33.5(2012):1402-1408.