- Title
- Shear band propagation and mechanical behaviours of landslides under top loading
- Creator
- Wei, Lanting; Wang, Shanyong; Xu, Qiang; Ji, Xu
- Relation
- ARC.DP210100437 http://purl.org/au-research/grants/arc/DP210100437
- Relation
- Transportation Geotechnics Vol. 37, Issue November 2022, no. 100882
- Publisher Link
- http://dx.doi.org/10.1016/j.trgeo.2022.100882
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2022
- Description
- The configuration of slip surface is conventionally regarded as a key characteristic to distinguish slope failure modes that are embedded in the limited equilibrium method and the bearing capacity theories. However, few studies indicated that a different way of propagating a slip surface with the same configuration might affect the mechanical behaviour and failure mode of the slope. In this paper, the mechanical behaviour is studied in two slopes that have a similar configuration of slip surface with different processes of shear band evolution. Advances in transparent soil technology allow the non-intrusive observation of shear band development in the laboratory slope models. This paper presents shear band development inside slopes using the transparent soil technique and then analyse the mechanical behaviour via the discrete element method (DEM). In order to reproduce the laboratory results, the real shape of transparent soil particles is used in the DEM model, and the microscopic parameters are calibrated by response surface methodology (RSM). The mechanical parameters such as movement, stress, void ratio and energy dissipation are measured in different stages of shear band evolution and are measured in four regions: the weak plane, the shear band, the slope mass above the slip surface, and the slope mass below the slip surface. This paper presents the role of shear band propagation in the mechanical behaviour of slope and discusses the possibility of monitoring the mechanical behaviour of slope to predict the coalescence of slip surface.
- Subject
- pre-failure; shear band; mechanical behaviour; slope; landslide
- Identifier
- http://hdl.handle.net/1959.13/1486230
- Identifier
- uon:51806
- Identifier
- ISSN:2214-3912
- Language
- eng
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