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The effect of foundation embedment on inelastic response of structures / Mojtaba Mahsuli in Earthquake engineering structural dynamics, Vol. 38 N°4 (Avril 2009) 

Public ISBD [article]  in Earthquake engineering structural dynamics > Vol. 38 N°4 (Avril 2009) . - pp. 423-437 Titre : The effect of foundation embedment on inelastic response of structures Type de document : texte imprimé Auteurs : Mojtaba Mahsuli, Auteur ; M. Ali Ghannad, Auteur Article en page(s) : pp. 423-437 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Soil-structure  interaction;  Foundation  embedment;  Kinematic  interaction;  Ductility  demand;  Cone  models Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : In this research, a parametric study is carried out on the effect of soil-structure interaction on the ductility and strength demand of buildings with embedded foundation. Both kinematic interaction (KI) and inertial interaction effects are considered. The sub-structure method is used in which the structure is modeled by a simplified single degree of freedom system with idealized bilinear behavior. Besides, the soil sub-structure is considered as a homogeneous half-space and is modeled by a discrete model based on the concept of cone models. The foundation is modeled as a rigid cylinder embedded in the soil with different embedment ratios. The soil-structure system is then analyzed subjected to a suit of 24 selected accelerograms recorded on alluvium deposits. An extensive parametric study is performed for a wide range of the introduced non-dimensional key parameters, which control the problem. It is concluded that foundation embedment may increase the structural demands for slender buildings especially for the case of relatively soft soils. However, the increase in ductility demands may not be significant for shallow foundations with embedment depth to radius of foundation ratios up to one. Comparing the results with and without inclusion of KI reveals that the rocking input motion due to KI plays the main role in this phenomenon. ISSN : 0098-8847 En ligne : http://www3.interscience.wiley.com/journal/121519983/abstract [article] The effect of foundation embedment on inelastic response of structures [texte imprimé] / Mojtaba Mahsuli, Auteur ; M. Ali Ghannad, Auteur . - pp. 423-437. Génie Civil Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N°4 (Avril 2009) . - pp. 423-437 Mots-clés : Soil-structure  interaction;  Foundation  embedment;  Kinematic  interaction;  Ductility  demand;  Cone  models Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : In this research, a parametric study is carried out on the effect of soil-structure interaction on the ductility and strength demand of buildings with embedded foundation. Both kinematic interaction (KI) and inertial interaction effects are considered. The sub-structure method is used in which the structure is modeled by a simplified single degree of freedom system with idealized bilinear behavior. Besides, the soil sub-structure is considered as a homogeneous half-space and is modeled by a discrete model based on the concept of cone models. The foundation is modeled as a rigid cylinder embedded in the soil with different embedment ratios. The soil-structure system is then analyzed subjected to a suit of 24 selected accelerograms recorded on alluvium deposits. An extensive parametric study is performed for a wide range of the introduced non-dimensional key parameters, which control the problem. It is concluded that foundation embedment may increase the structural demands for slender buildings especially for the case of relatively soft soils. However, the increase in ductility demands may not be significant for shallow foundations with embedment depth to radius of foundation ratios up to one. Comparing the results with and without inclusion of KI reveals that the rocking input motion due to KI plays the main role in this phenomenon. ISSN : 0098-8847 En ligne : http://www3.interscience.wiley.com/journal/121519983/abstract