Les Inscriptions à la Bibliothèque sont ouvertes en
ligne via le site: https://biblio.enp.edu.dz
Les Réinscriptions se font à :
• La Bibliothèque Annexe pour les étudiants en
2ème Année CPST
• La Bibliothèque Centrale pour les étudiants en Spécialités
A partir de cette page vous pouvez :
Retourner au premier écran avec les recherches... |
Géotechnique / Gibson, R. E. . Vol. 60 N° 7GéotechniqueMention de date : Juillet 2010 Paru le : 24/01/2011 |
Dépouillements
Ajouter le résultat dans votre panierGeohazards and large, geographically distributed systems / T. D. O'Rourke in Géotechnique, Vol. 60 N° 7 (Juillet 2010)
[article]
in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 505–543
Titre : Geohazards and large, geographically distributed systems Type de document : texte imprimé Auteurs : T. D. O'Rourke, Auteur Année de publication : 2011 Article en page(s) : pp. 505–543 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Numerical modelling Shear strength Soil/structure interaction Earthquakes Buried structures Sands Liquefaction Seismicity Laboratory equipment Full-scale tests Case history Partial saturation Laboratory tests Suction Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A general classification for scale in geotechnical engineering is used to explore the modelling of large, geographically distributed systems and their response to geohazards. Both component and network performance are reviewed. With respect to components, prototype-scale experiments of underground pipeline response to abrupt ground deformation are described, including control of soil properties, soil–pipeline interaction, and performance of high-density polyethylene pipelines. Direct shear (DS) apparatus size is shown to have a significant effect on DS strength, and the most reliable DS device is identified from comparative tests with different equipment. Mohr–Coulomb strength parameters for partially saturated sand are developed from DS test data and applied in finite element simulations of soil–pipeline interaction that show excellent agreement with prototype-scale experimental results. Apparent cohesion measured during shear failure of partially saturated sand is caused by suction-induced dilatancy. With respect to networks, the modelling of liquefaction effects on the San Francisco water supply is described, and a case history of its successful application during the Loma Prieta earthquake is presented. The systematic analysis of pipeline repair records after the Northridge earthquake is used to identify zones of potential ground failure, and correlate pipeline damage rates with strong ground motion. Hydraulic network analyses are described for the seismic performance of the Los Angeles water supply, with practical applications for emergency response. The effects of Hurricane Katrina are reviewed with respect to the New Orleans hurricane protection system, Gulf of Mexico oil and gas production, and interaction between electric power and liquid fuel delivery systems. The sustainability of the Mississippi delta is discussed with regard to flood control, maintenance of wetlands and barrier islands, and catastrophic change in the course of the Mississippi River.
DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.2010.60.7.505 [article] Geohazards and large, geographically distributed systems [texte imprimé] / T. D. O'Rourke, Auteur . - 2011 . - pp. 505–543.
Génie Civil
Langues : Anglais (eng)
in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 505–543
Mots-clés : Numerical modelling Shear strength Soil/structure interaction Earthquakes Buried structures Sands Liquefaction Seismicity Laboratory equipment Full-scale tests Case history Partial saturation Laboratory tests Suction Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A general classification for scale in geotechnical engineering is used to explore the modelling of large, geographically distributed systems and their response to geohazards. Both component and network performance are reviewed. With respect to components, prototype-scale experiments of underground pipeline response to abrupt ground deformation are described, including control of soil properties, soil–pipeline interaction, and performance of high-density polyethylene pipelines. Direct shear (DS) apparatus size is shown to have a significant effect on DS strength, and the most reliable DS device is identified from comparative tests with different equipment. Mohr–Coulomb strength parameters for partially saturated sand are developed from DS test data and applied in finite element simulations of soil–pipeline interaction that show excellent agreement with prototype-scale experimental results. Apparent cohesion measured during shear failure of partially saturated sand is caused by suction-induced dilatancy. With respect to networks, the modelling of liquefaction effects on the San Francisco water supply is described, and a case history of its successful application during the Loma Prieta earthquake is presented. The systematic analysis of pipeline repair records after the Northridge earthquake is used to identify zones of potential ground failure, and correlate pipeline damage rates with strong ground motion. Hydraulic network analyses are described for the seismic performance of the Los Angeles water supply, with practical applications for emergency response. The effects of Hurricane Katrina are reviewed with respect to the New Orleans hurricane protection system, Gulf of Mexico oil and gas production, and interaction between electric power and liquid fuel delivery systems. The sustainability of the Mississippi delta is discussed with regard to flood control, maintenance of wetlands and barrier islands, and catastrophic change in the course of the Mississippi River.
DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.2010.60.7.505 Strain path controlled shear tests on an analogue granular material / E. Ibraim in Géotechnique, Vol. 60 N° 7 (Juillet 2010)
[article]
in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 545–559
Titre : Strain path controlled shear tests on an analogue granular material Type de document : texte imprimé Auteurs : E. Ibraim, Auteur ; J. Lanier, Auteur ; D. Muir Wood, Auteur Année de publication : 2011 Article en page(s) : pp. 545–559 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Laboratory tests Stress path Constitutive relations Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A series of strain controlled tests have been performed on a two-dimensional analogue granular material, composed of three different sizes of rods, in a special laboratory apparatus which permits full control of plane deformations, including rotation of principal axes. These tests have been designed and used to explore certain constitutive conjectures concerning the mechanical behaviour of granular materials. The results, within the accuracy of the apparatus, show that irrespective of the initial stress history of the material, proportional strain paths (if continued for long enough) lead to proportional stress states (asymptotic states). The asymptotic states appear to be independent of the fixed imposed rotation of principal strain axes and at these states coaxiality between the principal stress direction and the principal incremental strain direction seems to be reached. A stress dilatancy relationship between the imposed dilatancy and the corresponding asymptotic stress ratio has been identified.
DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.p.100 [article] Strain path controlled shear tests on an analogue granular material [texte imprimé] / E. Ibraim, Auteur ; J. Lanier, Auteur ; D. Muir Wood, Auteur . - 2011 . - pp. 545–559.
Génie Civil
Langues : Anglais (eng)
in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 545–559
Mots-clés : Laboratory tests Stress path Constitutive relations Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A series of strain controlled tests have been performed on a two-dimensional analogue granular material, composed of three different sizes of rods, in a special laboratory apparatus which permits full control of plane deformations, including rotation of principal axes. These tests have been designed and used to explore certain constitutive conjectures concerning the mechanical behaviour of granular materials. The results, within the accuracy of the apparatus, show that irrespective of the initial stress history of the material, proportional strain paths (if continued for long enough) lead to proportional stress states (asymptotic states). The asymptotic states appear to be independent of the fixed imposed rotation of principal strain axes and at these states coaxiality between the principal stress direction and the principal incremental strain direction seems to be reached. A stress dilatancy relationship between the imposed dilatancy and the corresponding asymptotic stress ratio has been identified.
DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.p.100 Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests / J. Kumar in Géotechnique, Vol. 60 N° 7 (Juillet 2010)
[article]
in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 561-567
Titre : Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests Type de document : texte imprimé Auteurs : J. Kumar, Auteur ; B. N. Madhusudhan, Auteur Année de publication : 2011 Article en page(s) : pp. 561-567 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Dynamic properties Laboratory tests Sands Shear modulus Soil dynamics Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : By using the bender and extender elements tests, together with measurements of the travel times of shear (S) and primary (P) waves, the variation of Poisson ratio (ν) was determined for dry sands with respect to changes in relative densities and effective confining pressures (σ 3). The tests were performed for three different ranges of particle sizes. The magnitude of the Poisson ratio decreases invariably with an increase in both the relative density and the effective confining pressure. The effect of the confining pressure on the Poisson ratio was found to become relatively more significant for fine-grained sand as compared with the coarse-grained sand. For a given material, at a particular value of σ 3, the magnitude of the Poisson ratio decreases, almost in a linear fashion, with an increase in the value of maximum shear modulus (G max). The two widely used correlations in literature, providing the relationships among G max, void ratio (e) and effective confining pressure (σ 3), applicable for angular granular materials, were found to compare reasonably well with the present experimental data for the fine- and medium-grained sands. However, for the coarse-grained sand, these correlations tend to overestimate the values of G max.
DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.9.t.003 [article] Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests [texte imprimé] / J. Kumar, Auteur ; B. N. Madhusudhan, Auteur . - 2011 . - pp. 561-567.
Génie Civil
Langues : Anglais (eng)
in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 561-567
Mots-clés : Dynamic properties Laboratory tests Sands Shear modulus Soil dynamics Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : By using the bender and extender elements tests, together with measurements of the travel times of shear (S) and primary (P) waves, the variation of Poisson ratio (ν) was determined for dry sands with respect to changes in relative densities and effective confining pressures (σ 3). The tests were performed for three different ranges of particle sizes. The magnitude of the Poisson ratio decreases invariably with an increase in both the relative density and the effective confining pressure. The effect of the confining pressure on the Poisson ratio was found to become relatively more significant for fine-grained sand as compared with the coarse-grained sand. For a given material, at a particular value of σ 3, the magnitude of the Poisson ratio decreases, almost in a linear fashion, with an increase in the value of maximum shear modulus (G max). The two widely used correlations in literature, providing the relationships among G max, void ratio (e) and effective confining pressure (σ 3), applicable for angular granular materials, were found to compare reasonably well with the present experimental data for the fine- and medium-grained sands. However, for the coarse-grained sand, these correlations tend to overestimate the values of G max.
DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.9.t.003
Exemplaires
Code-barres | Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|---|
aucun exemplaire |