铁道科学与工程学报2017，Vol.14Issue(5)：942-949,8.
戈壁土路基沉降监测技术及其变形特征研究
Research on subgrade settlement monitoring and its deformation character in Gobi desert
摘要
Abstract
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.关键词
路基沉降/监测/CDI-400组合式沉降/变形特征Key words
subgrade settlement/monitor/CDI-400 combined settlement equipment/deformation character分类
交通工程引用本文复制引用
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].铁道科学与工程学报,2017,14(5):942-949,8.基金项目
国家科研院所技术开发研究专项资金资助项目(2010EG123210) （2010EG123210）
铁道部科技研究开发计划资助项目(2010G019-S) （2010G019-S）
