The response characteristics and stability evaluation of vegetated slope under strong wind
Abstract As one of the major geological disasters in southeastern China, typhoon-induced vegetation slope instability causes significant loss of life and property each year. Despite the criticality of this issue, the response mechanism of vegetated slopes to wind loading in terms of soil deformation...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-11-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-024-80428-9 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846158600536326144 |
|---|---|
| author | Yanlin Liu Fei Wang Feng Ji Lianhua Zhang Jianjun Zhao Chen Zheng Jibin Chen |
| author_facet | Yanlin Liu Fei Wang Feng Ji Lianhua Zhang Jianjun Zhao Chen Zheng Jibin Chen |
| author_sort | Yanlin Liu |
| collection | DOAJ |
| description | Abstract As one of the major geological disasters in southeastern China, typhoon-induced vegetation slope instability causes significant loss of life and property each year. Despite the criticality of this issue, the response mechanism of vegetated slopes to wind loading in terms of soil deformation and stability still remains unclear. This research conducted field investigations on 330 historical landslides in Yongjia County, Zhejiang Province, analyzing their spatiotemporal distribution and developmental characteristics to establish a conceptual model. The influence of wind and vegetation conditions on slope dynamic parameters and soil strength parameters were subsequently determined through numerical simulations using FLAC3D software, model tests, and direct shear tests. The results show that: (1) The influence of wind on the dynamic response of vegetated slopes is significantly affected by wind speed. At wind forces ≤ 12 (hurricane: 32.7–36.9 m/s), vegetation plays a positive role in enhancing slope stability. At wind forces ≥ 13 (typhoon: 37.0–41.4 m/s), vegetation exerts a negative influence under the combined action of strong wind loads. (2) Based on the experimentally determined evolution of soil strength parameters, a formula c (v, w) was fitted to express the variation of cohesion with wind speed (v) and moisture content (w). (3) The optimized evaluation model demonstrates increased sensitivity compared to the traditional model, resulting in a 17.88% increase in sliding force and a 10.62–11.64% increase in anti-sliding force. This research accounts for both the direct and indirect effects of wind loading on vegetated slopes. The findings are expected to enhance the stability assessment of vegetated slopes under strong winds and facilitate the development of more accurate machine learning and statistical models in the future. |
| format | Article |
| id | doaj-art-79e3c405329b491ba67d5f45c4466257 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-79e3c405329b491ba67d5f45c44662572024-11-24T12:21:41ZengNature PortfolioScientific Reports2045-23222024-11-0114111810.1038/s41598-024-80428-9The response characteristics and stability evaluation of vegetated slope under strong windYanlin Liu0Fei Wang1Feng Ji2Lianhua Zhang3Jianjun Zhao4Chen Zheng5Jibin Chen6China State Key Laboratory of Geological Hazard Prevention and Geological Environmental Protection, Chengdu University of TechnologyChina State Key Laboratory of Geological Hazard Prevention and Geological Environmental Protection, Chengdu University of TechnologyChina State Key Laboratory of Geological Hazard Prevention and Geological Environmental Protection, Chengdu University of TechnologyChina State Key Laboratory of Geological Hazard Prevention and Geological Environmental Protection, Chengdu University of TechnologyChina State Key Laboratory of Geological Hazard Prevention and Geological Environmental Protection, Chengdu University of TechnologyZhejiang Geology and Mineral Technology Co., LTD.Department of Civil Engineering, Chengdu Technological Universitv (Yibin Campus)Abstract As one of the major geological disasters in southeastern China, typhoon-induced vegetation slope instability causes significant loss of life and property each year. Despite the criticality of this issue, the response mechanism of vegetated slopes to wind loading in terms of soil deformation and stability still remains unclear. This research conducted field investigations on 330 historical landslides in Yongjia County, Zhejiang Province, analyzing their spatiotemporal distribution and developmental characteristics to establish a conceptual model. The influence of wind and vegetation conditions on slope dynamic parameters and soil strength parameters were subsequently determined through numerical simulations using FLAC3D software, model tests, and direct shear tests. The results show that: (1) The influence of wind on the dynamic response of vegetated slopes is significantly affected by wind speed. At wind forces ≤ 12 (hurricane: 32.7–36.9 m/s), vegetation plays a positive role in enhancing slope stability. At wind forces ≥ 13 (typhoon: 37.0–41.4 m/s), vegetation exerts a negative influence under the combined action of strong wind loads. (2) Based on the experimentally determined evolution of soil strength parameters, a formula c (v, w) was fitted to express the variation of cohesion with wind speed (v) and moisture content (w). (3) The optimized evaluation model demonstrates increased sensitivity compared to the traditional model, resulting in a 17.88% increase in sliding force and a 10.62–11.64% increase in anti-sliding force. This research accounts for both the direct and indirect effects of wind loading on vegetated slopes. The findings are expected to enhance the stability assessment of vegetated slopes under strong winds and facilitate the development of more accurate machine learning and statistical models in the future.https://doi.org/10.1038/s41598-024-80428-9Typhoon-induced landslideFinite element softwareSoil strength degradationSlope stabilitySoutheast coastal region |
| spellingShingle | Yanlin Liu Fei Wang Feng Ji Lianhua Zhang Jianjun Zhao Chen Zheng Jibin Chen The response characteristics and stability evaluation of vegetated slope under strong wind Scientific Reports Typhoon-induced landslide Finite element software Soil strength degradation Slope stability Southeast coastal region |
| title | The response characteristics and stability evaluation of vegetated slope under strong wind |
| title_full | The response characteristics and stability evaluation of vegetated slope under strong wind |
| title_fullStr | The response characteristics and stability evaluation of vegetated slope under strong wind |
| title_full_unstemmed | The response characteristics and stability evaluation of vegetated slope under strong wind |
| title_short | The response characteristics and stability evaluation of vegetated slope under strong wind |
| title_sort | response characteristics and stability evaluation of vegetated slope under strong wind |
| topic | Typhoon-induced landslide Finite element software Soil strength degradation Slope stability Southeast coastal region |
| url | https://doi.org/10.1038/s41598-024-80428-9 |
| work_keys_str_mv | AT yanlinliu theresponsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT feiwang theresponsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT fengji theresponsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT lianhuazhang theresponsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT jianjunzhao theresponsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT chenzheng theresponsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT jibinchen theresponsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT yanlinliu responsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT feiwang responsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT fengji responsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT lianhuazhang responsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT jianjunzhao responsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT chenzheng responsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind AT jibinchen responsecharacteristicsandstabilityevaluationofvegetatedslopeunderstrongwind |