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A platform for research: civil engineering, architecture and urbanism
Pseudo-dynamic analysis of three-dimensional active earth pressures in cohesive backfills with cracks
https://orcid.org/0000-0001-7721-593X
Abstract Most of the existing studies on seismic active earth pressure evaluation use a pseudo-static method to consider seismic actions and are carried out under two-dimensional conditions. However, the pseudo-static approach characterizes the earthquake acceleration as a constant, which is a simplified mode and neglects some crucial seismic inputs. Additionally, the collapse of retained soil masses has a three-dimensional (3D) feature in practice. In this study, a framework that combines the kinematic approach of limit analysis and a pseudo-dynamic approach was established to predict 3D seismic active earth pressures in cohesive backfills with cracks. The resultant active earth pressure was obtained from the work-energy balance equation and was expressed by a dimensionless coefficient. The proposed approach was validated by comparison with an extant study. The results indicate that considering 3D effects and soil cohesion can trigger a distinct decrease in the active earth pressure, whereas the consideration of cracks and seismic effects has the opposite effect.
Highlights An extensive literature survey on the seismic active earth pressure in cohesive backfills was conducted. A pseudo-dynamic approach and the kinematic approach of limit analysis were adopted to get the final solution. This paper considered the 3D effect and the effect of the existence of cracks on the seismic active earth pressure.
Pseudo-dynamic analysis of three-dimensional active earth pressures in cohesive backfills with cracks
https://orcid.org/0000-0001-7721-593X
Abstract Most of the existing studies on seismic active earth pressure evaluation use a pseudo-static method to consider seismic actions and are carried out under two-dimensional conditions. However, the pseudo-static approach characterizes the earthquake acceleration as a constant, which is a simplified mode and neglects some crucial seismic inputs. Additionally, the collapse of retained soil masses has a three-dimensional (3D) feature in practice. In this study, a framework that combines the kinematic approach of limit analysis and a pseudo-dynamic approach was established to predict 3D seismic active earth pressures in cohesive backfills with cracks. The resultant active earth pressure was obtained from the work-energy balance equation and was expressed by a dimensionless coefficient. The proposed approach was validated by comparison with an extant study. The results indicate that considering 3D effects and soil cohesion can trigger a distinct decrease in the active earth pressure, whereas the consideration of cracks and seismic effects has the opposite effect.
Highlights An extensive literature survey on the seismic active earth pressure in cohesive backfills was conducted. A pseudo-dynamic approach and the kinematic approach of limit analysis were adopted to get the final solution. This paper considered the 3D effect and the effect of the existence of cracks on the seismic active earth pressure.
Pseudo-dynamic analysis of three-dimensional active earth pressures in cohesive backfills with cracks
https://orcid.org/0000-0001-7721-593X
Abstract Most of the existing studies on seismic active earth pressure evaluation use a pseudo-static method to consider seismic actions and are carried out under two-dimensional conditions. However, the pseudo-static approach characterizes the earthquake acceleration as a constant, which is a simplified mode and neglects some crucial seismic inputs. Additionally, the collapse of retained soil masses has a three-dimensional (3D) feature in practice. In this study, a framework that combines the kinematic approach of limit analysis and a pseudo-dynamic approach was established to predict 3D seismic active earth pressures in cohesive backfills with cracks. The resultant active earth pressure was obtained from the work-energy balance equation and was expressed by a dimensionless coefficient. The proposed approach was validated by comparison with an extant study. The results indicate that considering 3D effects and soil cohesion can trigger a distinct decrease in the active earth pressure, whereas the consideration of cracks and seismic effects has the opposite effect.
Highlights An extensive literature survey on the seismic active earth pressure in cohesive backfills was conducted. A pseudo-dynamic approach and the kinematic approach of limit analysis were adopted to get the final solution. This paper considered the 3D effect and the effect of the existence of cracks on the seismic active earth pressure.
Pseudo-dynamic analysis of three-dimensional active earth pressures in cohesive backfills with cracks
Lei, Mingfeng (author) / Li, Jin (author) / Zhao, Chenyang (author) / Shi, Chenghua (author) / Yang, Weichao (author) / Deng, E. (author)
2021-07-22
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2010