Experimental evaluation of the shear behavior of large landslide slip zone using Multistage - Multiphase shearing method.
Abstract Abstract The study of shear behaviors comprises of the analysis of shear deformation characteristics and strength parameter determinations. Understanding the constitutive behaviour of shear zone soil samples is essential for evaluation of the critical shear behaviors of reactivated landslides, through considerate experimental tests. The experiment was carried out based on the multistage - multiphase shear technique via ring shear apparatus. The main advantage of this new method is to examine the same soil specimen for progressive loading and the continuous phases of shearing. The result shows that two major shear characteristics under the multiphase shear mode; the first is a post-peak shear weakening behavior of the soils on the last phase shear process, it indicated a decrease in friction resistance on fast rate effects, which enables to narrate with fastly moved coseismic landslide behaviors. The other one is a practical increase in friction coefficient values (hardening behavior) on the entire shear process as the rate increases. This shear resistance scenario can also be related with the stabilization mechanism of landslide slip surface soils against sliding..
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Preprint| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
ResearchSquare.com - (2020) vom: 03. Sept. Zur Gesamtaufnahme - year:2020 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
Getahun, Ephrem [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| doi: |
10.21203/rs.3.rs-37863/v1 |
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| PPN (Katalog-ID): |
XRA034612777 |
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| 245 | 1 | 0 | |a Experimental evaluation of the shear behavior of large landslide slip zone using Multistage - Multiphase shearing method. |
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| 520 | |a Abstract Abstract The study of shear behaviors comprises of the analysis of shear deformation characteristics and strength parameter determinations. Understanding the constitutive behaviour of shear zone soil samples is essential for evaluation of the critical shear behaviors of reactivated landslides, through considerate experimental tests. The experiment was carried out based on the multistage - multiphase shear technique via ring shear apparatus. The main advantage of this new method is to examine the same soil specimen for progressive loading and the continuous phases of shearing. The result shows that two major shear characteristics under the multiphase shear mode; the first is a post-peak shear weakening behavior of the soils on the last phase shear process, it indicated a decrease in friction resistance on fast rate effects, which enables to narrate with fastly moved coseismic landslide behaviors. The other one is a practical increase in friction coefficient values (hardening behavior) on the entire shear process as the rate increases. This shear resistance scenario can also be related with the stabilization mechanism of landslide slip surface soils against sliding. | ||
| 700 | 1 | |a Qi, Shengwen |e verfasserin |4 aut | |
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| 700 | 1 | |a Shi, Zhenming |e verfasserin |4 aut | |
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