Influence of load interval on dynamic properties of subgrade fill in cold regions
The real simulation of vehicle loads is the key to studying the dynamic behaviors of subgrade fill in cold regions. Considering the time interval between adjacent vehicles, a series of dynamic triaxial tests with continuous and intermittent cyclic loading were conducted. The results show that the in...
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525002864 |
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| author | Yapeng Wang Shujuan Zhang Han Jia Yintian Zheng Ruiqiang Bai |
| author_facet | Yapeng Wang Shujuan Zhang Han Jia Yintian Zheng Ruiqiang Bai |
| author_sort | Yapeng Wang |
| collection | DOAJ |
| description | The real simulation of vehicle loads is the key to studying the dynamic behaviors of subgrade fill in cold regions. Considering the time interval between adjacent vehicles, a series of dynamic triaxial tests with continuous and intermittent cyclic loading were conducted. The results show that the intermittent effect of cyclic load can enhance the stiffness of frozen subgrade fill, which is also strengthened by the increasing intermittent stages and ratios. The initial dynamic shear modulus of frozen subgrade fill can be effectively described using a function that accounts for the intermittent stage and intermittent ratio. Furthermore, a relationship between the maximum shear stress and the initial dynamic shear modulus has been established. A modified Hardin-Drnevich model is proposed to consider the interaction between the dynamic shear modulus, the intermittent stage, and intermittent ratio. The damping ratio increases nonlinearly as the increasing dynamic shear strain and intermittent ratio. A shear strain threshold exists and is slightly affected by the intermittent stage, but it decreases with increasing intermittent ratio. When the dynamic shear strain is larger than the shear strain threshold, the damping ratio increases with the increase in intermittent stage. The research results can provide a guidance for further understanding of the dynamic properties of frozen subgrade fill under the actual vehicle loads. |
| format | Article |
| id | doaj-art-3bf00f209b09460daad775b5d522b545 |
| institution | OA Journals |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-3bf00f209b09460daad775b5d522b5452025-08-20T01:58:27ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0448810.1016/j.cscm.2025.e04488Influence of load interval on dynamic properties of subgrade fill in cold regionsYapeng Wang0Shujuan Zhang1Han Jia2Yintian Zheng3Ruiqiang Bai4Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China; Da Xing’anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Jagdaqi 165000, China; International Research Center for China-Mongolia-Russia Cold and Arid Regions Environment and Engineering, Chinese Academy of Sciences, Lanzhou, Gansu 730000, ChinaKey Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author at: Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaKey Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaKey Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaThe real simulation of vehicle loads is the key to studying the dynamic behaviors of subgrade fill in cold regions. Considering the time interval between adjacent vehicles, a series of dynamic triaxial tests with continuous and intermittent cyclic loading were conducted. The results show that the intermittent effect of cyclic load can enhance the stiffness of frozen subgrade fill, which is also strengthened by the increasing intermittent stages and ratios. The initial dynamic shear modulus of frozen subgrade fill can be effectively described using a function that accounts for the intermittent stage and intermittent ratio. Furthermore, a relationship between the maximum shear stress and the initial dynamic shear modulus has been established. A modified Hardin-Drnevich model is proposed to consider the interaction between the dynamic shear modulus, the intermittent stage, and intermittent ratio. The damping ratio increases nonlinearly as the increasing dynamic shear strain and intermittent ratio. A shear strain threshold exists and is slightly affected by the intermittent stage, but it decreases with increasing intermittent ratio. When the dynamic shear strain is larger than the shear strain threshold, the damping ratio increases with the increase in intermittent stage. The research results can provide a guidance for further understanding of the dynamic properties of frozen subgrade fill under the actual vehicle loads.http://www.sciencedirect.com/science/article/pii/S2214509525002864Load intervalDynamic propertiesFrozen subgrade fill |
| spellingShingle | Yapeng Wang Shujuan Zhang Han Jia Yintian Zheng Ruiqiang Bai Influence of load interval on dynamic properties of subgrade fill in cold regions Case Studies in Construction Materials Load interval Dynamic properties Frozen subgrade fill |
| title | Influence of load interval on dynamic properties of subgrade fill in cold regions |
| title_full | Influence of load interval on dynamic properties of subgrade fill in cold regions |
| title_fullStr | Influence of load interval on dynamic properties of subgrade fill in cold regions |
| title_full_unstemmed | Influence of load interval on dynamic properties of subgrade fill in cold regions |
| title_short | Influence of load interval on dynamic properties of subgrade fill in cold regions |
| title_sort | influence of load interval on dynamic properties of subgrade fill in cold regions |
| topic | Load interval Dynamic properties Frozen subgrade fill |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525002864 |
| work_keys_str_mv | AT yapengwang influenceofloadintervalondynamicpropertiesofsubgradefillincoldregions AT shujuanzhang influenceofloadintervalondynamicpropertiesofsubgradefillincoldregions AT hanjia influenceofloadintervalondynamicpropertiesofsubgradefillincoldregions AT yintianzheng influenceofloadintervalondynamicpropertiesofsubgradefillincoldregions AT ruiqiangbai influenceofloadintervalondynamicpropertiesofsubgradefillincoldregions |