Prediction and mitigation of building floor vibrations using a blocking floor / Masoud Sanayei in Journal of structural engineering, Vol. 138 N° 10 (Octobre 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 10 (Octobre 2012) . - pp.1181–1192. Titre : Prediction and mitigation of building floor vibrations using a blocking floor Type de document : texte imprimé Auteurs : Masoud Sanayei, Auteur ; Ningyu Zhao, Auteur ; Pradeep Maurya, Auteur Année de publication : 2013 Article en page(s) : pp.1181–1192. Note générale : Génie civil Langues : Anglais (eng) Mots-clés : Shaker-induced vibrations Building Vibration mitigation Scale model building Laboratory testing Blocking floor Wave propagation Impedance modeling Résumé : Buildings that are located near transportation corridors often experience floor vibrations induced by passing trains or traffic, which causes building owners some concern. In this paper, a mathematical, impedance-based (wave propagation) model is presented for predicting train-induced floor vibrations in buildings. The model analytically predicts velocities, velocity ratios, and impedances. The analytical predictions of the model were compared and validated with the measured floor vibrations in a 4-story scale model building constructed by the writers. These predictions closely mimicked the measured responses. Using the results from the method presented indicate that the vibrations on the upper floors can be mitigated by increasing the thickness of a floor at a lower level in the building. This lower-level floor with the increased thickness is called a blocking floor. The scale model building was tested with and without a blocking floor. The predicted and measured responses of the scale model building using floor slabs with various thicknesses on the first floor are compared. It is concluded that the use of a blocking floor can mitigate the transmission of structure-borne vibration to the upper floors. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000557 [article] Prediction and mitigation of building floor vibrations using a blocking floor [texte imprimé] / Masoud Sanayei, Auteur ; Ningyu Zhao, Auteur ; Pradeep Maurya, Auteur . - 2013 . - pp.1181–1192. Génie civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 10 (Octobre 2012) . - pp.1181–1192. Mots-clés : Shaker-induced vibrations Building Vibration mitigation Scale model building Laboratory testing Blocking floor Wave propagation Impedance modeling Résumé : Buildings that are located near transportation corridors often experience floor vibrations induced by passing trains or traffic, which causes building owners some concern. In this paper, a mathematical, impedance-based (wave propagation) model is presented for predicting train-induced floor vibrations in buildings. The model analytically predicts velocities, velocity ratios, and impedances. The analytical predictions of the model were compared and validated with the measured floor vibrations in a 4-story scale model building constructed by the writers. These predictions closely mimicked the measured responses. Using the results from the method presented indicate that the vibrations on the upper floors can be mitigated by increasing the thickness of a floor at a lower level in the building. This lower-level floor with the increased thickness is called a blocking floor. The scale model building was tested with and without a blocking floor. The predicted and measured responses of the scale model building using floor slabs with various thicknesses on the first floor are compared. It is concluded that the use of a blocking floor can mitigate the transmission of structure-borne vibration to the upper floors. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000557

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