A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Thermo-mechanical ratcheting in soil–structure interfaces
Abstract This paper proposes and validates a thermo-mechanical ratcheting mechanism that explains the cumulative displacement of soil–continuum interfaces when subjected to temperature cycles and bias forces. The study provides experimental evidence of the mechanism from a physical model consisting of a rectangular, solid prism, that is subjected to temperature cycles and a static bias force aligned parallel to the interface, while resting on a horizontal granular material bed. The experimental results show that the thermally driven displacement accumulates with the number of temperature cycles in the direction of the bias axial force application. In addition, the displacement accumulation rate decreases with the static factor of safety against sliding of the interface and increases with the amplitude of the temperature cycles. FEM thermo-mechanical simulations of the physical model confirm the experimental findings. Finally, the governing equations of the mechanism are captured in a numerical algorithm that solves the load transfer of the prismatic element and reproduces the trend of displacement accumulation.
Thermo-mechanical ratcheting in soil–structure interfaces
Abstract This paper proposes and validates a thermo-mechanical ratcheting mechanism that explains the cumulative displacement of soil–continuum interfaces when subjected to temperature cycles and bias forces. The study provides experimental evidence of the mechanism from a physical model consisting of a rectangular, solid prism, that is subjected to temperature cycles and a static bias force aligned parallel to the interface, while resting on a horizontal granular material bed. The experimental results show that the thermally driven displacement accumulates with the number of temperature cycles in the direction of the bias axial force application. In addition, the displacement accumulation rate decreases with the static factor of safety against sliding of the interface and increases with the amplitude of the temperature cycles. FEM thermo-mechanical simulations of the physical model confirm the experimental findings. Finally, the governing equations of the mechanism are captured in a numerical algorithm that solves the load transfer of the prismatic element and reproduces the trend of displacement accumulation.
Thermo-mechanical ratcheting in soil–structure interfaces
Pastén, César (author) / Castillo, Emilia (author) / Chong, Song-Hun (author)
Acta Geotechnica ; 14 ; 1561-1569
2019-05-28
9 pages
Article (Journal)
Electronic Resource
English
Thermo-mechanical ratcheting in soil–structure interfaces
| Online Contents | 2019
Micro-mechanical investigation of the granular ratcheting
| British Library Conference Proceedings | 2004
| British Library Online Contents | 1998
Ratcheting phenomenon and post-ratcheting tensile behaviour of an aluminum alloy
| British Library Online Contents | 2012