Abstract
The influencing factors of floor impact sound, are characteristics such as the impact source, floor vibration reaction, and sound radiation. In this article, computerised simulation is utilised to explore the influencing factors of floor impact vibration, including slab with beam, floor thickness, compression strength of concrete, etc. Based on the finite element method (FEM), which is frequently used by structure designers in Taiwan, this research establishes an effective convenient method of predicting the impact vibration characteristics of slabs with various boundary conditions. By means of the computerised simulation and measurements in the field, the validity of the research methods is confirmed. Then, how the floor impact characteristics is influenced by various factors is investigated with different computerised models. It is shown that the floor vibration will be decreased by increasing floor thickness, and also by changing the position and the numbers of the beam. However, the vibration insulation of the floor is not improved significantly when the compression strength of concrete is increased.
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