Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw Cycles
Expansive soil has a significant impact on the stability of many key construction projects in cold regions. To study the physical and mechanical properties of expanded soil under the condition of freeze-thaw cycle, cryogenic cyclic triaxial tests were conducted on the dynamic and the displacement ch...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5526854 |
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| author | Zhongnian Yang Xuesen Liu Liang Zhang Fujun Niu Xianzhang Ling Guoyu Li Wei Shi |
| author_facet | Zhongnian Yang Xuesen Liu Liang Zhang Fujun Niu Xianzhang Ling Guoyu Li Wei Shi |
| author_sort | Zhongnian Yang |
| collection | DOAJ |
| description | Expansive soil has a significant impact on the stability of many key construction projects in cold regions. To study the physical and mechanical properties of expanded soil under the condition of freeze-thaw cycle, cryogenic cyclic triaxial tests were conducted on the dynamic and the displacement characteristics of geosynthetic-reinforced expansive soil subjected to the freeze-thaw cycles. Compared with the unreinforced expansive soil samples, the effects of freeze-thaw cycles on the soil dynamics were discussed. The dynamic shear modulus (Gd) and damping ratio (λ) of the expansive soil samples are improved by reinforcement. Reinforced soil can inhibit the axial compression of the sample and restrain the frost heave deformation of the sample during the freezing process. Meanwhile, it can delay the structural damage effect caused by frost heave and reduce the rate of change of the Gd and the λ with the freeze-thaw cycle. At the same time, reinforced soil can inhibit the axial expansion, reduce the rate of reduction of the Gd, stabilize it with a higher rate, and reduce the influence of the freeze-thaw cycles on the λ of the expansive soil sample. Finally, the change of mechanical properties of expansive soil under the condition of reinforcement is obtained. The main conclusions of this paper can be used to reinforce the roadbed and foundation engineering of frozen soil in a cold region and provide support for the fiber reinforcement method of expansive soil. |
| format | Article |
| id | doaj-art-32dfdbe4e4314bc08773f2db64603e2d |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-32dfdbe4e4314bc08773f2db64603e2d2025-02-03T01:28:32ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/55268545526854Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw CyclesZhongnian Yang0Xuesen Liu1Liang Zhang2Fujun Niu3Xianzhang Ling4Guoyu Li5Wei Shi6Qingdao University of Technology, Qingdao, Shandong 266033, ChinaQingdao University of Technology, Qingdao, Shandong 266033, ChinaNorthwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, ChinaNorthwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, ChinaQingdao University of Technology, Qingdao, Shandong 266033, ChinaNorthwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, ChinaQingdao University of Technology, Qingdao, Shandong 266033, ChinaExpansive soil has a significant impact on the stability of many key construction projects in cold regions. To study the physical and mechanical properties of expanded soil under the condition of freeze-thaw cycle, cryogenic cyclic triaxial tests were conducted on the dynamic and the displacement characteristics of geosynthetic-reinforced expansive soil subjected to the freeze-thaw cycles. Compared with the unreinforced expansive soil samples, the effects of freeze-thaw cycles on the soil dynamics were discussed. The dynamic shear modulus (Gd) and damping ratio (λ) of the expansive soil samples are improved by reinforcement. Reinforced soil can inhibit the axial compression of the sample and restrain the frost heave deformation of the sample during the freezing process. Meanwhile, it can delay the structural damage effect caused by frost heave and reduce the rate of change of the Gd and the λ with the freeze-thaw cycle. At the same time, reinforced soil can inhibit the axial expansion, reduce the rate of reduction of the Gd, stabilize it with a higher rate, and reduce the influence of the freeze-thaw cycles on the λ of the expansive soil sample. Finally, the change of mechanical properties of expansive soil under the condition of reinforcement is obtained. The main conclusions of this paper can be used to reinforce the roadbed and foundation engineering of frozen soil in a cold region and provide support for the fiber reinforcement method of expansive soil.http://dx.doi.org/10.1155/2021/5526854 |
| spellingShingle | Zhongnian Yang Xuesen Liu Liang Zhang Fujun Niu Xianzhang Ling Guoyu Li Wei Shi Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw Cycles Advances in Civil Engineering |
| title | Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw Cycles |
| title_full | Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw Cycles |
| title_fullStr | Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw Cycles |
| title_full_unstemmed | Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw Cycles |
| title_short | Dynamic Behavior of Geosynthetic-Reinforced Expansive Soil under Freeze-Thaw Cycles |
| title_sort | dynamic behavior of geosynthetic reinforced expansive soil under freeze thaw cycles |
| url | http://dx.doi.org/10.1155/2021/5526854 |
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