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28 results on '"Rahme, Pierre"'

10. Influence of geometrical uncertainties of analytical modelling on the evaluation of building deflections induced by ground movements.

Author

El Kahi, Elio, Deck, Olivier, Khouri, Michel, Mehdizadeh, Rasool, and Rahme, Pierre

Subjects
SOIL-structure interaction, MINE subsidences, CONSTRUCTION materials, ENGINEERS, SUBWAY stations, CURVATURE
Abstract

The objective of this paper is to investigate the influence of various geometrical uncertainties of analytical modelling affecting the evaluation of building deflections induced by tunnelling or mining subsidence. Based on Winkler model coupled with an elastic Euler-Bernoulli beam, an analytical approach is applied to evaluate the influence of major sources of uncertainties related to the Soil-Structure Interaction (SSI) geometric conditions and properties, namely, the free-field ground movement profile, the building position with respect to the settlement curvature and the variability of the structure stiffness caused by the heterogeneity of structural materials and openings (doors, windows, etc.). A comparison of results from various configurations is done to evaluate the degree to which the developed analytical approach reproduces reality. Results reveal a discrepancy in the structure response by considering these uncertainties in the entire domain of variation of the SSI parameters. For an operational use, a coefficient A is proposed; this coefficient can be used by engineers and designers when evaluating the building damage induced by the transmission of ground movements to structures taking into consideration these uncertainties. [ABSTRACT FROM AUTHOR]

Published
2023
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14. Influence of Spatial Variability of Soil Properties on Structures Response

Author

Deck Olivier, Conin Marianne, Mehdizadeh Rasool, Khouri Michel, El Kahi Elio, Rahme Pierre, GeoRessources, Institut national des sciences de l'Univers (INSU - CNRS)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), and Faculté de Génie en électricité et électronique, Branche 2 (Université Libanaise) (ULFG2)

Subjects
021105 building & construction, [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique, 0211 other engineering and technologies, Environmental science, 020101 civil engineering, Spatial variability, Soil properties, Soil science, 02 engineering and technology, ComputingMilieux_MISCELLANEOUS, 0201 civil engineering
Abstract

International audience

Published
2019

15. Comportement des ouvrages soumis à des mouvements de terrain en tenant compte des incertitudes

Author

Elio, El Kahi, Deck, Olivier, Khouri, Michel, Mehdizadeh, Rasool, Rahme, Pierre, GeoRessources, Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Institut national des sciences de l'Univers (INSU - CNRS), Lebanese University [Beirut] (LU), Faculty of Engineering [Lebanese University] (ULFG), and El Kahi, Elio

Subjects
[SPI.GCIV.GEOTECH] Engineering Sciences [physics]/Civil Engineering/Géotechnique, [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

16. Studying the influence of soil plasticity on the transmission of ground movements affecting the soil- structure interaction

Author

El Kahi, Elio, Deck, O., Khouri, Michel, Mehdizadeh, Rasool, Rahme, Pierre, GeoRessources, Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Institut national des sciences de l'Univers (INSU - CNRS), Faculty of Engineering [Lebanese University] (ULFG), and Lebanese University [Beirut] (LU)

Subjects
soil-structure interaction, elastoplastic correlation, [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique, Analytical model, soil plasticity, Winkler model
Abstract

International audience; De nombreux bâtiments peuvent être endommagés par des mouvements de terrain associés à des excavations souterraines, des tunnels, des mines ou des excavations urbaines. L'évaluation du mouvement du terrain transmis est alors l'une des préoccupations majeures et la plasticité du sol peut avoir une influence signi-ficative sur le comportement de la structure dû à l'Interaction Sol-Structure (ISS). Le but de cette étude est d'étu-dier le comportement d'une structure existante assise sur un sol soumis à un mouvement de terrain en tenant compte de la plasticité du sol. Une approche analytique est appliquée pour examiner l'effet du comportement non linéaire du sol basée sur un modèle élastique modifié de Winkler. Les résultats révèlent l'influence de la prise en compte d'un comportement élasto-plastique sur l'évaluation de la transmission des mouvements du terrain et montrent la divergence dans la réponse de la structure, que le sol soit élastique ou élasto-plastique; cela affecte directement la prévision des dommages structurels. De plus, une nouvelle corrélation est proposée pour évaluer la réponse structurelle en tenant compte des paramètres d'ISS pour un sol élasto-plastique.; Many buildings may suffer damage due to ground movements associated to underground excavations like tunnelling, mines or urban excavations. Assessment of the transmitted ground movement is then one of the major concerns and soil plasticity may have a significant influence on structural behaviour due to the Soil-Structure Interaction (SSI). The purpose of this study is to investigate the behaviour of an existing structure sitting on a soil subjected to a ground movement with considering soil plasticity. Analytical approach is applied to examine the effect of the non-linear behaviour of soil based on a modified Winkler elastic model. Results reveal the influence of considering an elastoplastic behaviour on the evaluation of the transmission of ground movements, and display the discrepancy in the response of the structure whether the soil is elastic or elastoplastic; this directly affects the prediction of structural damage. In addition, a new correlation is proposed to evaluate the structural response considering SSI parameters for an elastoplastic soil.

Published
2019

17. Studying the Influence of Uncertainties on the Transmission of Ground Movements Affecting the Soil-Structure Interaction

Author

Elio, El Kahi, Michel, Khouri, Deck, Olivier, Rahme, Pierre, Mehdizadeh, Rasool, El Kahi, Elio, GeoRessources, Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Institut national des sciences de l'Univers (INSU - CNRS), Faculty of Engineering [Lebanese University] (ULFG), and Lebanese University [Beirut] (LU)

Subjects
[SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique, [SPI.GCIV.GEOTECH] Engineering Sciences [physics]/Civil Engineering/Géotechnique, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

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