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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Maria Fernanda de Oliveira1 and Jorge Viçoso Patricio2
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DOI:10.17265/1934-7359/2017.03.007
Affiliation(s)
1. Technological Institute onCivil Construction - itt Performance, Unisinos University, São Leopoldo 93022-750, Brazil;
2. National Laboratory for Civil Engineering-LNEC, Lisbon1700-066, Portugal
ABSTRACT
Floor systems with non-homogeneous slabs have more complex means of
propagation than homogeneous systems, with more variables to be considered in
predictions by theoretical models. For those slabs, it is necessary to
understand the differences of each material composing each subsystem, and the
connection types between the elements of each one of this subsystem. Some
floors integrating lightweight elements without structural purposes, are
broadly used in several countries in precast slabs. The predictions based on
computer modelling for building
systems can be influenced by the input parameters related to connections
between the elements of the floor system. In building structures, the analysis
of radiation due to element vibrations may be represented by wave propagation
relationships as a one-dimensional system, a two-dimensional system or a
three-dimensional solid. In these floors, the modelling of the interaction between elements can be basically a
face, a line or a point connection. In addition, the choice of the connection
type can determine the vibration transmission amongst all the floor elements.
This study focuses on the differences that can be obtained in the induced
vibration response due to an impact source on non-homogeneous slabs. It also
presents some examples of modelling options for several floor systems,
considering input parameters for different connection types.
KEYWORDS
Non-homogeneous floors, vibrational response, finite element analysis.
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