Soil–geosynthetic interaction in pullout and inclined-plane shear for two geosynthetics exhumed after installation damage
| Autor: | Margarida Pinho-Lopes, Maria de Lurdes Lopes, António Miguel Paula |
|---|---|
| Přispěvatelé: | Faculdade de Engenharia |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
business.product_category Inclined plane shear 0211 other engineering and technologies Engineering and technology 02 engineering and technology 01 natural sciences Geogrid Parasitic drag Ultimate tensile strength Ciências da engenharia e tecnologias Geotextile Geotechnical engineering 0101 mathematics Inclined plane 021101 geological & geomatics engineering Civil and Structural Engineering business.industry 010102 general mathematics Structural engineering Geosynthetics Technological sciences Engineering and technology Geotechnical Engineering and Engineering Geology Pullout Shear (geology) Ciências Tecnológicas Ciências da engenharia e tecnologias Installation damage Direct shear test business Coefficient of interaction |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | This paper contributes to a better understanding of how installation damage of geosynthetics can affect soil–geosynthetic interaction during pullout and inclined-plane shear. The effects of installation damage induced in field trials of a woven geotextile and a woven geogrid were studied. The results indicated that after installation the accumulation of a layer of fine particles over the geosynthetic can reduce the skin friction available, particularly for sheet materials. Installation damage can induce premature tensile failure in pullout tests, along the unconfined portion of the geosynthetic, causing a significant reduction in the corresponding coefficient of interaction. The contribution of the bearing members to the coefficient of interaction during pullout was estimated using equations from the literature. Such estimates were too optimistic. The installation damage induced had little influence on the soil–geosynthetic coefficient of interaction in the inclined plane shear test. The different relative movements of the soil and geosynthetic in pullout and inclined-plane shear, as well as the deformation of the reinforcements during pullout, enabled different mobilisation of the interface strength. For the comparable conditions tested, the coefficient of interaction from inclined plane shear tests was larger than that measured from pullout tests. The reduction factor for installation damage obtained from tensile tests overestimated the effects of the installation conditions on the soil–geosynthetic interface from both pullout and inclined plane shear tests. The authors would like to thank the financial support of FCT (Fundação para a Ciência e para a Tecnologia) – Portugal, Research Project PTDC/ECM/099087/2008 and COMPETE, Research Project FCOMP-01-0124- FEDER-009724. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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