Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle action
To study the dynamic behavior of chloride saline soil embankments in the high-cold saline lake region under traffic loads and freeze-thaw cycles, this paper focuses on the Sebei Qarhan Highway. The indoor dynamic load freeze-thaw cycle model test system was designed and large-scale model tests were...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509524011926 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850065292966756352 |
|---|---|
| author | Dongqing Wang Xiaohua Yang Qi Wan Shasha Zhang |
| author_facet | Dongqing Wang Xiaohua Yang Qi Wan Shasha Zhang |
| author_sort | Dongqing Wang |
| collection | DOAJ |
| description | To study the dynamic behavior of chloride saline soil embankments in the high-cold saline lake region under traffic loads and freeze-thaw cycles, this paper focuses on the Sebei Qarhan Highway. The indoor dynamic load freeze-thaw cycle model test system was designed and large-scale model tests were conducted based on on-site geological conditions. The study examined the main effects of traffic load amplitude and frequency, embankment fill water content, and freeze-thaw cycles on dynamic stress, strain, and modulus of the embankment. Results showed an approximate linear correlation between load amplitude and dynamic stress, while dynamic stress and strain decreased nonlinearly with depth. Increased load amplitude significantly reduced the dynamic modulus within the 0–0.8 m depth range. Load frequency had minor effects on embankment dynamics. Higher load amplitudes had a greater impact on water content's influence on embankment dynamics. With increased water content, dynamic stress increased while dynamic modulus decreased more significantly within the 0–0.8 m range. Freeze-thaw cycles caused U-shaped variation in soil temperature within the 0.05–0.7 m depth range, with water and salt moving upward. Dynamic strain increased by 30 %-50 % and 70 %-120 % before and after freeze-thaw cycles at 20kPa and 40kPa load amplitudes respectively, with the dynamic modulus of the embankment top from 0 to 0.1 m decreasing by 20.1 % and 33.2 % respectively. |
| format | Article |
| id | doaj-art-7b2fa038b7bd46cab594ef3c3b64e28f |
| institution | DOAJ |
| issn | 2214-5095 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-7b2fa038b7bd46cab594ef3c3b64e28f2025-08-20T02:49:02ZengElsevierCase Studies in Construction Materials2214-50952024-12-0121e0404010.1016/j.cscm.2024.e04040Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle actionDongqing Wang0Xiaohua Yang1Qi Wan2Shasha Zhang3School of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, China; Corresponding author.School of Highway, Chang’an University, Xi’an 710064, China; Guangdong Transportation Technology Testing Co., Ltd., Guangzhou 510550, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaTo study the dynamic behavior of chloride saline soil embankments in the high-cold saline lake region under traffic loads and freeze-thaw cycles, this paper focuses on the Sebei Qarhan Highway. The indoor dynamic load freeze-thaw cycle model test system was designed and large-scale model tests were conducted based on on-site geological conditions. The study examined the main effects of traffic load amplitude and frequency, embankment fill water content, and freeze-thaw cycles on dynamic stress, strain, and modulus of the embankment. Results showed an approximate linear correlation between load amplitude and dynamic stress, while dynamic stress and strain decreased nonlinearly with depth. Increased load amplitude significantly reduced the dynamic modulus within the 0–0.8 m depth range. Load frequency had minor effects on embankment dynamics. Higher load amplitudes had a greater impact on water content's influence on embankment dynamics. With increased water content, dynamic stress increased while dynamic modulus decreased more significantly within the 0–0.8 m range. Freeze-thaw cycles caused U-shaped variation in soil temperature within the 0.05–0.7 m depth range, with water and salt moving upward. Dynamic strain increased by 30 %-50 % and 70 %-120 % before and after freeze-thaw cycles at 20kPa and 40kPa load amplitudes respectively, with the dynamic modulus of the embankment top from 0 to 0.1 m decreasing by 20.1 % and 33.2 % respectively.http://www.sciencedirect.com/science/article/pii/S2214509524011926Highway engineeringHigh-cold saline lake areaCoarse grained saline soilDynamic characteristicsModel test |
| spellingShingle | Dongqing Wang Xiaohua Yang Qi Wan Shasha Zhang Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle action Case Studies in Construction Materials Highway engineering High-cold saline lake area Coarse grained saline soil Dynamic characteristics Model test |
| title | Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle action |
| title_full | Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle action |
| title_fullStr | Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle action |
| title_full_unstemmed | Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle action |
| title_short | Experimental study on the dynamic characteristics of coarse-grained saline soil embankments in the high-cold saline lake area under freeze-thaw cycle action |
| title_sort | experimental study on the dynamic characteristics of coarse grained saline soil embankments in the high cold saline lake area under freeze thaw cycle action |
| topic | Highway engineering High-cold saline lake area Coarse grained saline soil Dynamic characteristics Model test |
| url | http://www.sciencedirect.com/science/article/pii/S2214509524011926 |
| work_keys_str_mv | AT dongqingwang experimentalstudyonthedynamiccharacteristicsofcoarsegrainedsalinesoilembankmentsinthehighcoldsalinelakeareaunderfreezethawcycleaction AT xiaohuayang experimentalstudyonthedynamiccharacteristicsofcoarsegrainedsalinesoilembankmentsinthehighcoldsalinelakeareaunderfreezethawcycleaction AT qiwan experimentalstudyonthedynamiccharacteristicsofcoarsegrainedsalinesoilembankmentsinthehighcoldsalinelakeareaunderfreezethawcycleaction AT shashazhang experimentalstudyonthedynamiccharacteristicsofcoarsegrainedsalinesoilembankmentsinthehighcoldsalinelakeareaunderfreezethawcycleaction |