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A platform for research: civil engineering, architecture and urbanism
Physical and Numerical Shaking Table Studies on Geocell-Reinforced Retaining Walls
Construction of retaining walls using geocell stacks as facing has many advantages such as inherent flexibility, reduction in construction cost and time, dispensability of concrete facing, and overall improvement in stability. Though soil–geocell interactions at element level are well understood, various aspects of these interactions at a bigger scale, specifically under seismic conditions are not established. In this study, retaining walls with geocell facing were tested under seismic conditions through shaking table model tests. The study is focussed on understanding the effects of geocell stiffness, slope inclination, and infill type on the acceleration and displacement response of geocell walls under seismic conditions. Results showed that battered-faced walls performed much better than vertical-faced walls. Even the low-strength geocells could offer great resistance to seismic shaking. Further, to understand the behaviour of the geocell retaining walls under actual earthquake loading, 3D modelling of the wall considering the actual shape of geocells was carried out using FLAC3D. The results showed that the retaining wall subjected to acceleration time histories having the same peak acceleration and Arias intensity underwent different lateral deformations. This indicates that the frequency content of the input motion plays a major role in the performance of the geocell retaining walls.
Physical and Numerical Shaking Table Studies on Geocell-Reinforced Retaining Walls
Construction of retaining walls using geocell stacks as facing has many advantages such as inherent flexibility, reduction in construction cost and time, dispensability of concrete facing, and overall improvement in stability. Though soil–geocell interactions at element level are well understood, various aspects of these interactions at a bigger scale, specifically under seismic conditions are not established. In this study, retaining walls with geocell facing were tested under seismic conditions through shaking table model tests. The study is focussed on understanding the effects of geocell stiffness, slope inclination, and infill type on the acceleration and displacement response of geocell walls under seismic conditions. Results showed that battered-faced walls performed much better than vertical-faced walls. Even the low-strength geocells could offer great resistance to seismic shaking. Further, to understand the behaviour of the geocell retaining walls under actual earthquake loading, 3D modelling of the wall considering the actual shape of geocells was carried out using FLAC3D. The results showed that the retaining wall subjected to acceleration time histories having the same peak acceleration and Arias intensity underwent different lateral deformations. This indicates that the frequency content of the input motion plays a major role in the performance of the geocell retaining walls.
Physical and Numerical Shaking Table Studies on Geocell-Reinforced Retaining Walls
Int. J. of Geosynth. and Ground Eng.
Krishnaraj, Prerana (author) / Manju, G. S. (author) / Latha, Gali Madhavi (author)
2023-10-01
Article (Journal)
Electronic Resource
English
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