Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey Soil
Abstract Accelerating creep before catastrophic failure commonly follows a power‐law velocity‐acceleration relationship, with the exponent typically near 2 but often evolving from 1 to 2 at a certain point, indicating a dynamic transition. The underlying mechanisms, however, remain unclear. Here we...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-12-01
|
| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2024GL111839 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850126628016881664 |
|---|---|
| author | Chengrui Chang Hiroyuki Noda Qiang Xu Dongliang Huang Tetsuo Yamaguchi |
| author_facet | Chengrui Chang Hiroyuki Noda Qiang Xu Dongliang Huang Tetsuo Yamaguchi |
| author_sort | Chengrui Chang |
| collection | DOAJ |
| description | Abstract Accelerating creep before catastrophic failure commonly follows a power‐law velocity‐acceleration relationship, with the exponent typically near 2 but often evolving from 1 to 2 at a certain point, indicating a dynamic transition. The underlying mechanisms, however, remain unclear. Here we investigate this transition by monitoring the slip displacement of clayey soil during fluid‐injection creep experiments. This transition is discontinuous in the first run but becomes continuous in the initially pre‐sheared sample. Using a regularized rate‐and‐state friction model, we explicitly examine the relationship between the exponent and the frictional properties of the soil. This model describes the dynamic transition, with the exponent evolving from 1 to 2 across a broad range of frictional parameters. Furthermore, by incorporating idealized shear localization processes, the model qualitatively reproduces the shear‐history‐dependent transition. Our study demonstrates that a combination of structural evolutions and frictional properties may explain slow and fast slips observed in various shear systems. |
| format | Article |
| id | doaj-art-64153fd0f958446cb4fffabe24e0037c |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-64153fd0f958446cb4fffabe24e0037c2025-08-20T02:33:52ZengWileyGeophysical Research Letters0094-82761944-80072024-12-015123n/an/a10.1029/2024GL111839Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey SoilChengrui Chang0Hiroyuki Noda1Qiang Xu2Dongliang Huang3Tetsuo Yamaguchi4Department of Biomaterial Sciences Graduate School of Agricultural and Life Sciences The University of Tokyo Tokyo JapanDisaster Prevention Research Institute Kyoto University Uji JapanState Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu ChinaPreviously at School of Civil Engineering Central South University Changsha ChinaDepartment of Biomaterial Sciences Graduate School of Agricultural and Life Sciences The University of Tokyo Tokyo JapanAbstract Accelerating creep before catastrophic failure commonly follows a power‐law velocity‐acceleration relationship, with the exponent typically near 2 but often evolving from 1 to 2 at a certain point, indicating a dynamic transition. The underlying mechanisms, however, remain unclear. Here we investigate this transition by monitoring the slip displacement of clayey soil during fluid‐injection creep experiments. This transition is discontinuous in the first run but becomes continuous in the initially pre‐sheared sample. Using a regularized rate‐and‐state friction model, we explicitly examine the relationship between the exponent and the frictional properties of the soil. This model describes the dynamic transition, with the exponent evolving from 1 to 2 across a broad range of frictional parameters. Furthermore, by incorporating idealized shear localization processes, the model qualitatively reproduces the shear‐history‐dependent transition. Our study demonstrates that a combination of structural evolutions and frictional properties may explain slow and fast slips observed in various shear systems.https://doi.org/10.1029/2024GL111839creepfrictionclayey soilshear localizationaccelerationpower‐law |
| spellingShingle | Chengrui Chang Hiroyuki Noda Qiang Xu Dongliang Huang Tetsuo Yamaguchi Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey Soil Geophysical Research Letters creep friction clayey soil shear localization acceleration power‐law |
| title | Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey Soil |
| title_full | Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey Soil |
| title_fullStr | Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey Soil |
| title_full_unstemmed | Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey Soil |
| title_short | Slow‐to‐Fast Transition and Shear Localization in Accelerating Creep of Clayey Soil |
| title_sort | slow to fast transition and shear localization in accelerating creep of clayey soil |
| topic | creep friction clayey soil shear localization acceleration power‐law |
| url | https://doi.org/10.1029/2024GL111839 |
| work_keys_str_mv | AT chengruichang slowtofasttransitionandshearlocalizationinacceleratingcreepofclayeysoil AT hiroyukinoda slowtofasttransitionandshearlocalizationinacceleratingcreepofclayeysoil AT qiangxu slowtofasttransitionandshearlocalizationinacceleratingcreepofclayeysoil AT donglianghuang slowtofasttransitionandshearlocalizationinacceleratingcreepofclayeysoil AT tetsuoyamaguchi slowtofasttransitionandshearlocalizationinacceleratingcreepofclayeysoil |