Physical model test on landslide thrust distribution on double-row stabilizing piles
Distribution pattern of thrust force on double-row stabilizing piles is one of the essential factors for the design of stabilizing piles. For a bedrock-overburden landslide strengthened with double-row stabilizing piles, four sets of laboratory physical model test are conducted considering various r...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of The Chinese Journal of Geological Hazard and Control
2022-04-01
|
| Series: | Zhongguo dizhi zaihai yu fangzhi xuebao |
| Subjects: | |
| Online Access: | https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.2022.02-10 |
| _version_ | 1797865935621586944 |
|---|---|
| author | Yuping YAN Shiguo XIAO |
| author_facet | Yuping YAN Shiguo XIAO |
| author_sort | Yuping YAN |
| collection | DOAJ |
| description | Distribution pattern of thrust force on double-row stabilizing piles is one of the essential factors for the design of stabilizing piles. For a bedrock-overburden landslide strengthened with double-row stabilizing piles, four sets of laboratory physical model test are conducted considering various rear-row pile configurations. In particular, slip surface softening effect due to heavy rainfall is physically simulated using external water injection and infiltration into the shear band through a special channel. Distribution characteristics of the landslide thrust on the two piles are measured, which is further verified by a numerical simulation method FLAC3D. The test results show that the thrusts on the rear and fore piles present a parabolic distribution pattern, and the location with peak value is relatively close to the slip surface. If the pile location remains unchanged, the peak value of the thrust force behind the rear pile decreases with the increase of its embedded depth and the position with peak value moves upward; while the peak value of the thrust behind the fore pile increases with the embedded depth of the rear pile top, and the position with peak value changes unobviously. The slip surface softening effect does not change the distribution pattern of the thrust forces on piles, but it can increase the thrusts behind the piles; compared with the top and bottom of the piles, the increase of the thrust in the middle part of the piles is relatively larger. The thrust forces on the rear and fore piles under external water injection are about 14.3%~21.4% and 17.9%~24.8% higher than those before the softening action, respectively. |
| first_indexed | 2024-04-09T23:16:09Z |
| format | Article |
| id | doaj.art-3283657ae0fa4cd0941daff43bfdcb43 |
| institution | Directory Open Access Journal |
| issn | 1003-8035 |
| language | zho |
| last_indexed | 2024-04-09T23:16:09Z |
| publishDate | 2022-04-01 |
| publisher | Editorial Office of The Chinese Journal of Geological Hazard and Control |
| record_format | Article |
| series | Zhongguo dizhi zaihai yu fangzhi xuebao |
| spelling | doaj.art-3283657ae0fa4cd0941daff43bfdcb432023-03-22T07:50:21ZzhoEditorial Office of The Chinese Journal of Geological Hazard and ControlZhongguo dizhi zaihai yu fangzhi xuebao1003-80352022-04-01332798710.16031/j.cnki.issn.1003-8035.2022.02-10202104041Physical model test on landslide thrust distribution on double-row stabilizing pilesYuping YAN0Shiguo XIAO1Department of Geological Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, ChinaKey Laboratory of High-speed Railway Engineering, Ministry of Education (Southwest Jiaotong University), Chengdu, Sichuan 610031, ChinaDistribution pattern of thrust force on double-row stabilizing piles is one of the essential factors for the design of stabilizing piles. For a bedrock-overburden landslide strengthened with double-row stabilizing piles, four sets of laboratory physical model test are conducted considering various rear-row pile configurations. In particular, slip surface softening effect due to heavy rainfall is physically simulated using external water injection and infiltration into the shear band through a special channel. Distribution characteristics of the landslide thrust on the two piles are measured, which is further verified by a numerical simulation method FLAC3D. The test results show that the thrusts on the rear and fore piles present a parabolic distribution pattern, and the location with peak value is relatively close to the slip surface. If the pile location remains unchanged, the peak value of the thrust force behind the rear pile decreases with the increase of its embedded depth and the position with peak value moves upward; while the peak value of the thrust behind the fore pile increases with the embedded depth of the rear pile top, and the position with peak value changes unobviously. The slip surface softening effect does not change the distribution pattern of the thrust forces on piles, but it can increase the thrusts behind the piles; compared with the top and bottom of the piles, the increase of the thrust in the middle part of the piles is relatively larger. The thrust forces on the rear and fore piles under external water injection are about 14.3%~21.4% and 17.9%~24.8% higher than those before the softening action, respectively.https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.2022.02-10landslidesdouble-row stabilizing pilesthrust distributionphysical model testslip surface softening effect |
| spellingShingle | Yuping YAN Shiguo XIAO Physical model test on landslide thrust distribution on double-row stabilizing piles Zhongguo dizhi zaihai yu fangzhi xuebao landslides double-row stabilizing piles thrust distribution physical model test slip surface softening effect |
| title | Physical model test on landslide thrust distribution on double-row stabilizing piles |
| title_full | Physical model test on landslide thrust distribution on double-row stabilizing piles |
| title_fullStr | Physical model test on landslide thrust distribution on double-row stabilizing piles |
| title_full_unstemmed | Physical model test on landslide thrust distribution on double-row stabilizing piles |
| title_short | Physical model test on landslide thrust distribution on double-row stabilizing piles |
| title_sort | physical model test on landslide thrust distribution on double row stabilizing piles |
| topic | landslides double-row stabilizing piles thrust distribution physical model test slip surface softening effect |
| url | https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.2022.02-10 |
| work_keys_str_mv | AT yupingyan physicalmodeltestonlandslidethrustdistributionondoublerowstabilizingpiles AT shiguoxiao physicalmodeltestonlandslidethrustdistributionondoublerowstabilizingpiles |