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Influence of foundation compressibility on reinforcement loads in geosynthetic reinforced soil walls

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A numerical FLAC model was used to investigate the influence of vertical stiffness of the foundation on the performance of an idealized 6-m high reinforced soil modular block retaining wall. Three different Winkler linear spring values were used to simulate a rigid foundation and two compliant foundation cases. For each foundation condition, the influence of reinforcement material stiffness was also investigated. One material matched the properties of a relatively extensible polymeric geogrid product and the other a relatively inextensible welded wire mesh material with much higher stiffness but the same strength. The results of sim-ulations show that as foundation stiffness decreases, reinforcement loads increase. However, for the two rein-forcement materials in this study, the influence of axial stiffness of the reinforcement had a greater effect on wall performance than the foundation stiffness for walls subjected to operational (working stress) conditions at end of construction. (576,6Kb) (Restricted access)   Request copy 

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hdl:2117/16647

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Bathurst, Richard
Puig Damians, IvanMés informacióMés informacióMés informació
Ezzein, F.
Josa Garcia-Tornel, AlejandroMés informacióMés informació
Lloret Morancho, AntonioMés informacióMés informacióMés informació
Document typeConference report
Defense date2012
PublisherInternational Geosynthetics Society (IGS)
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
A numerical FLAC model was used to investigate the influence of vertical stiffness of the foundation on the performance of an idealized 6-m high reinforced soil modular block retaining wall. Three different Winkler linear spring values were used to simulate a rigid foundation and two compliant foundation cases. For each foundation condition, the influence of reinforcement material stiffness was also investigated. One material matched the properties of a relatively extensible polymeric geogrid product and the other a relatively inextensible welded wire mesh material with much higher stiffness but the same strength. The results of simulations show that as foundation stiffness decreases, reinforcement loads increase. However, for the two reinforcement materials in this study, the influence of axial stiffness of the reinforcement had a greater effect on wall performance than the foundation stiffness for walls subjected to operational (working stress) conditions at end of construction.
CitationBathurst, R.J. [et al.]. Influence of foundation compressibility on reinforcement loads in geosynthetic reinforced soil walls. A: European Geosynthetics Congress. "Proceedings of the 5th European Geosynthetics Congress: vol. 5: Soil Improvement and Reinforcement". València: International Geosynthetics Society (IGS), 2012, p. 43-47. 
URIhttp://hdl.handle.net/2117/16647
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  • Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica (fins octubre 2015) - Ponències/Comunicacions de congressos [429]
  • MSR - Mecànica del Sòls i de les Roques - Ponències/Comunicacions de congressos [372]
  • MECMAT - Mecànica de Materials - Ponències/Comunicacions de congressos [76]
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Paper 313 Bathurst et al final.pdfBlockedA numerical FLAC model was used to investigate the influence of vertical stiffness of the foundation on the performance of an idealized 6-m high reinforced soil modular block retaining wall. Three different Winkler linear spring values were used to simulate a rigid foundation and two compliant foundation cases. For each foundation condition, the influence of reinforcement material stiffness was also investigated. One material matched the properties of a relatively extensible polymeric geogrid product and the other a relatively inextensible welded wire mesh material with much higher stiffness but the same strength. The results of sim-ulations show that as foundation stiffness decreases, reinforcement loads increase. However, for the two rein-forcement materials in this study, the influence of axial stiffness of the reinforcement had a greater effect on wall performance than the foundation stiffness for walls subjected to operational (working stress) conditions at end of construction. 576,6KbPDFRestricted access

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