Abstract
Frost damage to railway subgrade restricts the normal operation of railways and roadways in seasonally frozen areas. This paper proposes using stress release holes as a measure to alleviate frost heave force. Using a prediction model based on heat conduction and the seepage of unsaturated soil, a one-dimensional freezing experiment is conducted to calculate the frost heave of a soil column. Results suggest that stress release holes filled with mixed-materials can effectively alleviate frost heave and reduce vertical frost heave deformation from 36.8% to 65.3%. It is recommended that stress release holes be filled with a low stiffness, non-shrinking, cylindrical mixed-material which improves their waterproofing and strength enhancement. Furthermore, the burial depth of the stress release hole filling be kept above the height of supplementary water level, and that the filling's elastic modulus hold a value of 1/4 to 1/2 that of the surrounding soil.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
