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Numerical Model of Widen Construct of Geogrid-Reinforced Pile-Supported Railway Embankment
Abstract Established a 3D detailed model to understand the loading features and deformation behavior of the geogrid-reinforced pile-supported (GRPS) high-speed railway embankment under the situations of normal service and widen construct. According to the model results, the embankment is distinguished into three areas: Coverage Area, Slope Area and Extent Area. In the Coverage Area, the topline of the embankment settles indifferently. While the settlement is obviously heavy, the lateral deformation initiates linearly. In the Slope Area, the settlement decreases rapidly and the lateral deformation reaches the maximum which strongly affect the bearing capacity of piles. The load produced by the mound during the construction of widen couples with the bended piles leading to further reduce of the bearing capacity. In the Extent Area, the settlement of the embankment fades away and there is nearly no tension but the piles bend causing the retreat of the bearing capacity. In order to control the lateral deformation of GRPS embankment, it should be ensured enough piles.
Numerical Model of Widen Construct of Geogrid-Reinforced Pile-Supported Railway Embankment
Abstract Established a 3D detailed model to understand the loading features and deformation behavior of the geogrid-reinforced pile-supported (GRPS) high-speed railway embankment under the situations of normal service and widen construct. According to the model results, the embankment is distinguished into three areas: Coverage Area, Slope Area and Extent Area. In the Coverage Area, the topline of the embankment settles indifferently. While the settlement is obviously heavy, the lateral deformation initiates linearly. In the Slope Area, the settlement decreases rapidly and the lateral deformation reaches the maximum which strongly affect the bearing capacity of piles. The load produced by the mound during the construction of widen couples with the bended piles leading to further reduce of the bearing capacity. In the Extent Area, the settlement of the embankment fades away and there is nearly no tension but the piles bend causing the retreat of the bearing capacity. In order to control the lateral deformation of GRPS embankment, it should be ensured enough piles.
Numerical Model of Widen Construct of Geogrid-Reinforced Pile-Supported Railway Embankment
Wang, Yinan (author) / Bian, Xuecheng (author)
2017-06-28
12 pages
Article/Chapter (Book)
Electronic Resource
English
High-speed railway , GRPS embankment , Numerical model , Geogrid , Differential settlement Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Vibration, Dynamical Systems, Control , Monitoring/Environmental Analysis , Building Repair and Maintenance , Transportation Technology and Traffic Engineering
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