铁道标准设计Issue(11)：7-10,4.DOI:10.13238/j.issn.1004-2954.2014.11.002
哈大高速铁路路基冻胀自动观测和深化分析研究
Automatic Observation and Intensive Analysis of Frost Heaving of Harbin-Dalian High-speed Railway Subgrade
田士军1
作者信息
- 1. 中铁第一勘察设计院集团有限公司，西安 710043
- 折叠
摘要
Abstract
After Harbin-Dalian high-speed railway was opened to traffic, the control of subgrade frost-heaving deformation becomes one of the important tasks. Automatic observation and intensive analysis on frost heaving of the subgrade are conducted to ascertain the frost-heaving mechanism and explore applicable treatment measures. Automatic observation system is adopted to observe the temperature, moisture and frost-heaving deformation of subgrade within 5 meters under the shoulder. This article statistically analyzes and studies in detail the observation data. The results show that: subgrade frost heaving can be divided into five stages; frost-heaving deformation increases along with the rising of latitude at the freezing depth between 100 ~ 300 cm; frost heaving of surface layer accounts for 40% to 94% of the total amount; the residual deformation is less than 4mm after thawing settlement deformation becomes stable; development processes of frost-heaving in embankment and cutting are very similar, but the deformation and frozen depth in embankment is generally greater than that in cutting.关键词
哈大高速铁路/路基冻胀/自动观测Key words
Harbin-Dalian high-speed railway/Frost heaving of subgrade/Automatic observation分类
交通工程引用本文复制引用
田士军..哈大高速铁路路基冻胀自动观测和深化分析研究[J].铁道标准设计,2014,(11):7-10,4.
