Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modeling and Analysis of Infinite Beam on Extensible Geosynthetic-Reinforced Granular Fill-Soft Soil System Subjected to Moving Loads
In this paper modeling and analysis of an infinite beam (e.g. railway track), with an axle load moving with constant velocity is presented. The granular fill layer (ballast layer) is idealized as a Pasternak shear layer, which may contain a geosynthetic layer in between or at the interface overlying a soft soil stratum. The Geosynthetic is idealized by a rough membrane overlying a series of compressible Winkler springs representing the underlying soft soil, which responds identically in tension and compression. In the analysis the geosynthetic layer is assumed to be extensible, satisfying no slip and compatibility conditions at the interface between the reinforcement and the neighboring soil. This condition eliminates the two interfacial shear stress parameters and at the same time also incorporates the stiffness of geosynthetic in the model. It is observed that this approach results in substantial decrease in the predicted values of mobilized tension in the geosynthetic layer as compared to previous studies. It has been further observed that the flexural response of the beam as well as of the reinforcement, are greatly affected by the velocity, intensity of load and stiffness of the geosynthetic.
Modeling and Analysis of Infinite Beam on Extensible Geosynthetic-Reinforced Granular Fill-Soft Soil System Subjected to Moving Loads
In this paper modeling and analysis of an infinite beam (e.g. railway track), with an axle load moving with constant velocity is presented. The granular fill layer (ballast layer) is idealized as a Pasternak shear layer, which may contain a geosynthetic layer in between or at the interface overlying a soft soil stratum. The Geosynthetic is idealized by a rough membrane overlying a series of compressible Winkler springs representing the underlying soft soil, which responds identically in tension and compression. In the analysis the geosynthetic layer is assumed to be extensible, satisfying no slip and compatibility conditions at the interface between the reinforcement and the neighboring soil. This condition eliminates the two interfacial shear stress parameters and at the same time also incorporates the stiffness of geosynthetic in the model. It is observed that this approach results in substantial decrease in the predicted values of mobilized tension in the geosynthetic layer as compared to previous studies. It has been further observed that the flexural response of the beam as well as of the reinforcement, are greatly affected by the velocity, intensity of load and stiffness of the geosynthetic.
Modeling and Analysis of Infinite Beam on Extensible Geosynthetic-Reinforced Granular Fill-Soft Soil System Subjected to Moving Loads
Maheshwari, Priti (Autor:in) / Chandra, S. (Autor:in) / Basudhar, P. K. (Autor:in)
GeoShanghai International Conference 2006 ; 2006 ; Shanghai, China
11.05.2006
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 2006
Modeling of Multi Layer Extensible Geosynthetic-Reinforced Granular Fill over Soft Soil
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| British Library Online Contents | 2005
Nonlinear analysis of multilayer extensible geosynthetic-reinforced granular bed on soft soil
| British Library Online Contents | 2007