Analysis of railway subgrade frost heave deformation based on GPS

In order to analyze the connection between the railway subgrade frost heave deformation and temperature variation, five GPS stations' data were used to monitor the deformation on a certain section of railway subgrade in northeast China. GAMIT software is used to process the data, providing dail...

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Bibliographic Details
Published in:Geodesy and Geodynamics
Main Authors: Fuxun Ma, Ruijie Xi, Nan Xu
Format: Article in Journal/Newspaper
Language:English
Published: KeAi Communications Co., Ltd. 2016
Subjects:
GPS
Railway subgrade
Frost heave
Permafrost
Deformation monitoring
Geodesy
QB275-343
Geophysics. Cosmic physics
QC801-809
permafrost
Online Access:https://doi.org/10.1016/j.geog.2016.04.001
https://doaj.org/article/bed0c0ae1f9546f5be9f7678d430eacb
Description
Summary:In order to analyze the connection between the railway subgrade frost heave deformation and temperature variation, five GPS stations' data were used to monitor the deformation on a certain section of railway subgrade in northeast China. GAMIT software is used to process the data, providing daily solution, daytime solution and nighttime solution. Vertical trends of these five stations were analyzed to investigate frost heave effect on railway subgrade deformation. The results show that the temperature difference between daytime and night induces stations, significant vertical displacement, and the temperature difference between seasons causes settlement of station which appears linear trend.

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