干旱区生态环境知识资源中心(Arid): 戈壁土路基沉降监测技术及其变形特征研究

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	戈壁土路基沉降监测技术及其变形特征研究
其他题名	Research on subgrade settlement monitoring and its deformation character in Gobi desert
	庄德华 1; 屈耀辉 2
来源期刊	铁道科学与工程学报
ISSN	1672-7029
出版年	2017
卷号	14 期号:5 页码:942-949
中文摘要	兰新铁路第2双线新疆段气候条件严酷,现有的人工水准测量的沉降观测方式难以满足规范所要求的频率和频次。中铁西北院研发了CDI-400组合式沉降仪,并选择有代表性的试验工点对路基沉降变形特征进行评估。CDI-400组合式沉降仪绝对误差在0.2 mm以内,对高铁路基沉降的观测可以满足相关技术要求;试验工点地基沉降量均值为10.38 mm,其中路基填筑阶段发生了6.0 mm,路基填筑完成后发生了4.38 mm,地基沉降主要发生在路基填筑阶段;路基本体的压缩沉降量非常小,均值为1.14 mm,路基总沉降主要体现为地基的沉降,戈壁土地区采用冲击碾压的地基处理方式可以达到客运专线对路基沉降控制的要求;戈壁土的地基沉降主要发生在瞬时沉降阶段,表现为剪切沉降变形。
英文摘要	The climate of Lanzhou-Xinjiang railroad in Xinjiang province is cruel, and the current method of settlement evaluation is manual leveling, which cannot meet the frequency and accuracy demanded by code. CDI-400 combined settlement equipment was developed; typical experimental spot was selected to evaluate the subgrade settlement. The results shows that: The absolute errors of CDI-400 combined settlement equipment remains under 0.2 mm, it can evaluate the subgrade settlement of high-speed railway in accordance with the relevant technical requirements; the average foundation settlement of experimental spot was 10.38 mm, 6.0 mm settlement happened during subgrade filing, and 4.38 mm settlement after subgrade filling; the foundation settlement mainly happened during the subgrade filling; the mean value of subgrade compression settlement was 1.14 mm, which is very small, the subgrade settlement was mainly characterized by the foundation settlement, it can meet the subgrade settlement requirements of passenger dedicated line to treat the foundation with compact roiling; the foundation settlement in Gobi desert mainly happened during instant settlement phases, presented as shear settlement deformation.
中文关键词	路基沉降 ; 监测 ; CDI-400组合式沉降 ; 变形特征
英文关键词	subgrade settlement monitor CDI-400 combined settlement equipment deformation character
语种	中文
国家	中国
收录类别	CSCD
WOS类目	TRANSPORTATION
WOS研究方向	Transportation
CSCD记录号	CSCD:6012718
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236749
作者单位	1.兰州交通大学土木工程学院, 兰州, 甘肃 730070, 中国; 2.中铁西北科学研究院有限公司, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	庄德华,屈耀辉. 戈壁土路基沉降监测技术及其变形特征研究[J],2017,14(5):942-949.
APA	庄德华,&屈耀辉.(2017).戈壁土路基沉降监测技术及其变形特征研究.铁道科学与工程学报,14(5),942-949.
MLA	庄德华,et al."戈壁土路基沉降监测技术及其变形特征研究".铁道科学与工程学报 14.5(2017):942-949.