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.

中文翻译：

---

冻胀对橡胶-沥青-纤维填充淤泥柱的影响

摘要 铁路路基冻害限制了季节性冰冻地区铁路和公路的正常运行。本文提出使用应力释放孔作为减轻冻胀力的措施。利用基于热传导和非饱和土渗流的预测模型，进行一维冻结实验计算土柱冻胀。结果表明，填充混合材料的应力释放孔可以有效缓解冻胀，将垂直冻胀变形从36.8%降低到65.3%。建议应力释放孔填充低刚度、不收缩的圆柱形混合材料，以提高其防水性和强度。此外，