Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Two-dimensional soil arching evolution in geosynthetic-reinforced pile-supported embankments over voids
https://orcid.org/0000-0003-3137-733X
Abstract Soil arching and tensioned membrane effects are two main load transfer mechanisms for geosynthetic-reinforced pile-supported (GRPS) embankments over soft soils or voids. Evidences show that the tensioned membrane effect interacts with the soil arching effect. To investigate the soil arching evolution under different geosynthetic reinforcement stiffness and embankment height, a series of discrete element method (DEM) simulations of GRPS embankments were carried out based on physical model tests. The results indicate that the deformation pattern in the GRPS embankments changed from a concentric ellipse arch pattern to an equal settlement pattern with the increase of the embankment height. High stiffness geosynthetic hindered the development of soil arching and required more subsoil settlement to enable the development of maximum soil arching. However, soil arching in the GRPS embankments with low stiffness reinforcement degraded after reaching maximum soil arching. Appropriate stiffness reinforcement ensured the development and stability of maximum soil arching. According to the stress states on the pile top, a concentric ellipse soil arch model is proposed in this paper to describe the soil arching behavior in the GRPS embankments over voids. The predicted heights of soil arches and load efficacies on the piles agreed well with the DEM simulations and the test results from the literature.
Highlights This paper investigated the effect of geosynthetic stiffness on soil arching evolution including development and degradation. Soil arching deformation pattern depends on embankment height. Concentric ellipse soil arch model can describe maximum soil arching development with geosynthetic reinforcement.
Two-dimensional soil arching evolution in geosynthetic-reinforced pile-supported embankments over voids
https://orcid.org/0000-0003-3137-733X
Abstract Soil arching and tensioned membrane effects are two main load transfer mechanisms for geosynthetic-reinforced pile-supported (GRPS) embankments over soft soils or voids. Evidences show that the tensioned membrane effect interacts with the soil arching effect. To investigate the soil arching evolution under different geosynthetic reinforcement stiffness and embankment height, a series of discrete element method (DEM) simulations of GRPS embankments were carried out based on physical model tests. The results indicate that the deformation pattern in the GRPS embankments changed from a concentric ellipse arch pattern to an equal settlement pattern with the increase of the embankment height. High stiffness geosynthetic hindered the development of soil arching and required more subsoil settlement to enable the development of maximum soil arching. However, soil arching in the GRPS embankments with low stiffness reinforcement degraded after reaching maximum soil arching. Appropriate stiffness reinforcement ensured the development and stability of maximum soil arching. According to the stress states on the pile top, a concentric ellipse soil arch model is proposed in this paper to describe the soil arching behavior in the GRPS embankments over voids. The predicted heights of soil arches and load efficacies on the piles agreed well with the DEM simulations and the test results from the literature.
Highlights This paper investigated the effect of geosynthetic stiffness on soil arching evolution including development and degradation. Soil arching deformation pattern depends on embankment height. Concentric ellipse soil arch model can describe maximum soil arching development with geosynthetic reinforcement.
Two-dimensional soil arching evolution in geosynthetic-reinforced pile-supported embankments over voids
https://orcid.org/0000-0003-3137-733X
Abstract Soil arching and tensioned membrane effects are two main load transfer mechanisms for geosynthetic-reinforced pile-supported (GRPS) embankments over soft soils or voids. Evidences show that the tensioned membrane effect interacts with the soil arching effect. To investigate the soil arching evolution under different geosynthetic reinforcement stiffness and embankment height, a series of discrete element method (DEM) simulations of GRPS embankments were carried out based on physical model tests. The results indicate that the deformation pattern in the GRPS embankments changed from a concentric ellipse arch pattern to an equal settlement pattern with the increase of the embankment height. High stiffness geosynthetic hindered the development of soil arching and required more subsoil settlement to enable the development of maximum soil arching. However, soil arching in the GRPS embankments with low stiffness reinforcement degraded after reaching maximum soil arching. Appropriate stiffness reinforcement ensured the development and stability of maximum soil arching. According to the stress states on the pile top, a concentric ellipse soil arch model is proposed in this paper to describe the soil arching behavior in the GRPS embankments over voids. The predicted heights of soil arches and load efficacies on the piles agreed well with the DEM simulations and the test results from the literature.
Highlights This paper investigated the effect of geosynthetic stiffness on soil arching evolution including development and degradation. Soil arching deformation pattern depends on embankment height. Concentric ellipse soil arch model can describe maximum soil arching development with geosynthetic reinforcement.
Two-dimensional soil arching evolution in geosynthetic-reinforced pile-supported embankments over voids
Rui, Rui (Autor:in) / Ye, Yu-qiu (Autor:in) / Han, Jie (Autor:in) / Zhai, Yu-xin (Autor:in) / Wan, Yi (Autor:in) / Chen, Cheng (Autor:in) / Zhang, Lei (Autor:in)
Geotextiles and Geomembranes ; 50 ; 82-98
07.09.2021
17 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Micromechanical Analysis of Soil Arching in Geosynthetic-Reinforced Pile-Supported Embankments
| British Library Conference Proceedings | 2009
| British Library Online Contents | 2019