Large-Scale Model Test of a Micropile Group for Landslide Control
A large-scale model test on the interaction between a micropile group and a landslide was conducted, to investigate the effect of micropiles on the landsides prevention. The bearing mechanism, force condition, and failure mode of a micropile group for reinforcing landslide were analyzed in detail. T...
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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/10.1155/2021/6687124 |
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| author | Xueling Liu Jinkai Yan Lei Liu Bing Han |
| author_facet | Xueling Liu Jinkai Yan Lei Liu Bing Han |
| author_sort | Xueling Liu |
| collection | DOAJ |
| description | A large-scale model test on the interaction between a micropile group and a landslide was conducted, to investigate the effect of micropiles on the landsides prevention. The bearing mechanism, force condition, and failure mode of a micropile group for reinforcing landslide were analyzed in detail. The results showed that the thrust force over micropiles induced by landslide showed a trapezoidal distribution, with a higher Earth pressure near the sliding surface. The resistance from the sliding body behind the pile behaved in a parabolically trend. Meanwhile, the resistance force from the sliding bed was distributed unevenly along the height direction, with a higher resistance force near the sliding surface behind the pile. When a landslide occurred, micropiles were subjected to an increase in loading and displacement, eventually to the failure state. The load-bearing sections of the micropiles were all subjected to negative bending moments, with larger bending moments within the half length of pile range near the sliding surface. The maximum negative bending moment occurred at the height of seven times the diameter of the pile above the sliding surface. The damage mode along each row of micropiles was almost the same, showing a damage area within the range of three times the diameter of the pile above and below the sliding surface. The failure of micropile induced by landslides was mainly due to a combination effect of bending and shearing near the sliding surface. |
| format | Article |
| id | doaj-art-ce596a767d1f4cc5ae16a839c2a6b68d |
| institution | DOAJ |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-ce596a767d1f4cc5ae16a839c2a6b68d2025-08-20T03:19:42ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/66871246687124Large-Scale Model Test of a Micropile Group for Landslide ControlXueling Liu0Jinkai Yan1Lei Liu2Bing Han3School of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, ChinaChinese Academy of Geological Science, Beijing 100037, ChinaBeijing City University, Beijing 100083, ChinaChina Institute of Geo-Environmental Monitoring, Beijing 100081, ChinaA large-scale model test on the interaction between a micropile group and a landslide was conducted, to investigate the effect of micropiles on the landsides prevention. The bearing mechanism, force condition, and failure mode of a micropile group for reinforcing landslide were analyzed in detail. The results showed that the thrust force over micropiles induced by landslide showed a trapezoidal distribution, with a higher Earth pressure near the sliding surface. The resistance from the sliding body behind the pile behaved in a parabolically trend. Meanwhile, the resistance force from the sliding bed was distributed unevenly along the height direction, with a higher resistance force near the sliding surface behind the pile. When a landslide occurred, micropiles were subjected to an increase in loading and displacement, eventually to the failure state. The load-bearing sections of the micropiles were all subjected to negative bending moments, with larger bending moments within the half length of pile range near the sliding surface. The maximum negative bending moment occurred at the height of seven times the diameter of the pile above the sliding surface. The damage mode along each row of micropiles was almost the same, showing a damage area within the range of three times the diameter of the pile above and below the sliding surface. The failure of micropile induced by landslides was mainly due to a combination effect of bending and shearing near the sliding surface.http://dx.doi.org/10.1155/2021/6687124 |
| spellingShingle | Xueling Liu Jinkai Yan Lei Liu Bing Han Large-Scale Model Test of a Micropile Group for Landslide Control Advances in Civil Engineering |
| title | Large-Scale Model Test of a Micropile Group for Landslide Control |
| title_full | Large-Scale Model Test of a Micropile Group for Landslide Control |
| title_fullStr | Large-Scale Model Test of a Micropile Group for Landslide Control |
| title_full_unstemmed | Large-Scale Model Test of a Micropile Group for Landslide Control |
| title_short | Large-Scale Model Test of a Micropile Group for Landslide Control |
| title_sort | large scale model test of a micropile group for landslide control |
| url | http://dx.doi.org/10.1155/2021/6687124 |
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