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The load transfer mechanism in reinforced piled embankment under cyclic loading and unloading
The load transfer mechanism is complicated and closely concerned with the control of settlement in Geogrid-reinforced and pile-supported (GRPS) embankments. However, the research on load transfer mechanism in GRPS systems subjected to cyclic loadings and unloading is limited. This paper conducted a finite-element analysis to investigate the load transfer mechanism of GRPS system subjected to cyclic loading and unloading. The settlement and the stress in the embankment both were found redistributed under cyclic load and unloading. Compared with the results under static loads, the maximum settlement at the base of the embankment increased by 23–55% due to cyclic load, while was slightly rebound under unloading. The efficiency in terms of vertical load carried by piles is decreased by 3–14% experienced the cyclic load, whereas 11–26% of the reduction of the efficiency was rebound under unloading. To comprehensively investigate the rebound phenomenon, parametric studies with the variation of velocity, vehicle wheel load, geogrid stiffness and geometry of piled embankment were conducted. It is found that the rebound phenomenon is most apparent as varying the vehicle wheel load (10–48% of the increment of the normalised vertical stress rebounded), which phenomenon will be further strengthened for the larger value of h/s.
The load transfer mechanism in reinforced piled embankment under cyclic loading and unloading
The load transfer mechanism is complicated and closely concerned with the control of settlement in Geogrid-reinforced and pile-supported (GRPS) embankments. However, the research on load transfer mechanism in GRPS systems subjected to cyclic loadings and unloading is limited. This paper conducted a finite-element analysis to investigate the load transfer mechanism of GRPS system subjected to cyclic loading and unloading. The settlement and the stress in the embankment both were found redistributed under cyclic load and unloading. Compared with the results under static loads, the maximum settlement at the base of the embankment increased by 23–55% due to cyclic load, while was slightly rebound under unloading. The efficiency in terms of vertical load carried by piles is decreased by 3–14% experienced the cyclic load, whereas 11–26% of the reduction of the efficiency was rebound under unloading. To comprehensively investigate the rebound phenomenon, parametric studies with the variation of velocity, vehicle wheel load, geogrid stiffness and geometry of piled embankment were conducted. It is found that the rebound phenomenon is most apparent as varying the vehicle wheel load (10–48% of the increment of the normalised vertical stress rebounded), which phenomenon will be further strengthened for the larger value of h/s.
The load transfer mechanism in reinforced piled embankment under cyclic loading and unloading
Zhuang, Yan (author) / Cui, Xiaoyan (author) / Zhang, Sheng (author) / Dai, Guoliang (author) / Zhao, Xueliang (author)
European Journal of Environmental and Civil Engineering ; 26 ; 1364-1378
2022-03-12
15 pages
Article (Journal)
Electronic Resource
Unknown
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